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Tropical Fruit => Tropical Fruit Discussion => Topic started by: murahilin on April 14, 2012, 10:27:07 AM

Title: Mango Pests, Diseases, and Nutritional Problems
Post by: murahilin on April 14, 2012, 10:27:07 AM
The goal of this post is for everyone who has a mango pest, disease, or nutritional problem to post the picture here and for it to be diagnosed and be a future reference for others. Please only include your own pics and not pics pulled from the web.

I'll start, I noticed what appears to be eggs on my coconut cream mango tree. Can anyone tell what type of eggs so I know whether to get rid of them?

(http://s13.postimage.org/e3itjvpo3/photo_3.jpg) (http://postimage.org/image/e3itjvpo3/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropicalgrower89 on April 14, 2012, 12:18:33 PM
I'm not sure what type of eggs they are, but I would get a napkin and wipe them off.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: murahilin on April 14, 2012, 09:19:13 PM
I say a heavy dose of malathion, or Sevin mixed with some neem oil or horticultural oil to make sure it suffocates and kill those intruders. While you are at it give that poor tree some copper to get rid of all that anthracnose. I'm done playing Mr. nice guy with pests on my fruit trees.

I think that's over kill. I rather not spray my trees with too many strong pesticides. Since I don't know what type of eggs they are I don't plan on getting rid of them. I try not to spray copper that often either.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mr. Clean on April 16, 2012, 04:01:31 PM
I say a heavy dose of malathion, or Sevin mixed with some neem oil or horticultural oil to make sure it suffocates and kill those intruders. While you are at it give that poor tree some copper to get rid of all that anthracnose. I'm done playing Mr. nice guy with pests on my fruit trees.

Enduser's advice sounds good to me.  Perhaps start off with a pesticide, if that doesn't kill the critters, try something stronger.  The copper makes sense since your tree has anthracnose. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: murahilin on April 16, 2012, 06:35:34 PM
Enduser's advice sounds good to me.  Perhaps start off with a pesticide, if that doesn't kill the critters, try something stronger.  The copper makes sense since your tree has anthracnose.

Why would I want to kill something I haven't yet identified? Even after identifying it, why would be first choice be to use a pesticide? Why not let the other bugs handle it. Mango trees are pretty good at taking care of themselves. I don't think I have ever had to spray a pesticide on any mango tree I've planted in the ground.

The reason the copper doesn't make sense to me is that over use of copper can be damaging to the environment and unless my tree is flowering and I am possibly going to lose a large amount of fruit I see no need to spray copper on my tree.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on April 16, 2012, 07:42:51 PM
Enduser's advice sounds good to me.  Perhaps start off with a pesticide, if that doesn't kill the critters, try something stronger.  The copper makes sense since your tree has anthracnose.

Why would I want to kill something I haven't yet identified? Even after identifying it, why would be first choice be to use a pesticide? Why not let the other bugs handle it. Mango trees are pretty good at taking care of themselves. I don't think I have ever had to spray a pesticide on any mango tree I've planted in the ground.

The reason the copper doesn't make sense to me is that over use of copper can be damaging to the environment and unless my tree is flowering and I am possibly going to lose a large amount of fruit I see no need to spray copper on my tree.
I agree with you on no heavy dose of pesticide for your tree.  Like you said, better to first find out what they are as it doesn't seem to be causing any damage at the moment.

As for copper, if you are having major anthracnose issues or some other invasive fungal issues I would attack with a strong regime of copper.  Otherwise, once a month or even once every other month should more than suffice.  if you had fruit to "protect", that would be different.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fruitlovers on April 16, 2012, 08:18:27 PM
I agree that it's not wise to spray even before you know what you are spraying for. If you can't ID the eggs just keep close eye on them till start hatching. As for anthracnose i think that the tree can be weakened if it has anthracnose, so it would be good to spray copper on it. You can greatly minimize any soil damage caused by copper foliar spray by just using a tarp under the tree that catches anything that drips to the ground.


Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: murahilin on April 16, 2012, 11:45:58 PM
Oscar and Rob, I agree about copper for Anthracnose but luckily this tree is not really showing any visible signs. The tree as a whole looks really good so I see no need to spray it. I may hit it with one or two copper sprays during the summer(with a tarp underneath to collect any copper runoff of course).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mr. Clean on April 17, 2012, 01:31:31 AM
DELETED
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fruitlovers on April 17, 2012, 02:36:07 AM
I think those may be weevil eggs.  See these links.

http://www.scienceboard.net/community/perspectives.239.html (http://www.scienceboard.net/community/perspectives.239.html)

http://blog.redweevil.com/album-pics/22/ (http://blog.redweevil.com/album-pics/22/)

I don't know why you want to wait and see what hatches before treating it.  From the picture, it looks like several of the eggs hatched.

Palm weevil eggs on mangos? I didn't think mangos are a host plant for palm weevil?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on April 17, 2012, 07:23:08 AM
I think those may be weevil eggs.  See these links.

http://www.scienceboard.net/community/perspectives.239.html (http://www.scienceboard.net/community/perspectives.239.html)

http://blog.redweevil.com/album-pics/22/ (http://blog.redweevil.com/album-pics/22/)

I don't know why you want to wait and see what hatches before treating it.  From the picture, it looks like several of the eggs hatched.

Palm weevil eggs on mangos? I didn't think mangos are a host plant for palm weevil?
Agreed, plus, that Science Advisory Board does not even list the U.S. as a country affected.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: happyisland on April 17, 2012, 08:06:56 AM
I agree that it's not wise to spray even before you know what you are spraying for. If you can't ID the eggs just keep close eye on them till start hatching. As for anthracnose i think that the tree can be weakened if it has anthracnose, so it would be good to spray copper on it. You can greatly minimize any soil damage caused by copper foliar spray by just using a tarp under the tree that catches anything that drips to the ground.

In everyone's experience, what are the negative effects of spraying copper?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mr. Clean on April 17, 2012, 08:35:50 AM
Palm weevil eggs on mangos? I didn't think mangos are a host plant for palm weevil?

Florida has an infestation of Sri Lanka Weevils; I can't find pictures of their eggs on the internet. http://lee.ifas.ufl.edu/Hort/UsefulLawnandGardenResources/SriLankaWeevilupdate2008.pdf (http://lee.ifas.ufl.edu/Hort/UsefulLawnandGardenResources/SriLankaWeevilupdate2008.pdf)

However, I was able to find pictures of another weevil's eggs.  The picture of the eggs look similar to weevil.  The description of the eggs is:  "Eggs:  The eggs are creamy white in color, long and oval in shape. The average size of an egg is 2.6 mm long and 1.1 mm wide." 

Hope noone from Florida mailed anything to Hawaii...the penalties are severe:  http://hawaii.gov/hdoa/pi/pq/penalty (http://hawaii.gov/hdoa/pi/pq/penalty)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: murahilin on April 17, 2012, 08:49:31 AM
Florida has an infestation of Sri Lanka Weevils; I can't find pictures of their eggs on the internet. http://lee.ifas.ufl.edu/Hort/UsefulLawnandGardenResources/SriLankaWeevilupdate2008.pdf (http://lee.ifas.ufl.edu/Hort/UsefulLawnandGardenResources/SriLankaWeevilupdate2008.pdf)

However, I was able to find pictures of another weevil's eggs.  The picture of the eggs look similar to weevil.  The description of the eggs is:  "Eggs:  The eggs are creamy white in color, long and oval in shape. The average size of an egg is 2.6 mm long and 1.1 mm wide." 

Hope noone from Florida mailed anything to Hawaii...the penalties are severe:  http://hawaii.gov/hdoa/pi/pq/penalty (http://hawaii.gov/hdoa/pi/pq/penalty)

If you googled Sri Lanka Weevil egg, the first result would show you a picture of the egg: http://trec.ifas.ufl.edu/mannion/pdfs/SriLankaWeevil.pdf (http://trec.ifas.ufl.edu/mannion/pdfs/SriLankaWeevil.pdf)

It also explains that the egg is laid in the soil.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: murahilin on April 17, 2012, 08:51:18 AM
In everyone's experience, what are the negative effects of spraying copper?

This post has some info on it: http://tropicalfruitforum.com/index.php?topic=273 (http://tropicalfruitforum.com/index.php?topic=273)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropicalgrower89 on April 17, 2012, 11:10:52 AM
I think those may be weevil eggs.  See these links.

http://www.scienceboard.net/community/perspectives.239.html (http://www.scienceboard.net/community/perspectives.239.html)

http://blog.redweevil.com/album-pics/22/ (http://blog.redweevil.com/album-pics/22/)

I don't know why you want to wait and see what hatches before treating it.  From the picture, it looks like several of the eggs hatched.

I think Mr. Clean is right. I saw some weevil couples on top of each other... So it's the special time of year.  ;D They were on my ndm #4 so I crushed those horny mofos... lol    Trying to spread your population and eat up my trees? I don't think so....  :P
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: SWRancher on April 17, 2012, 11:38:47 AM
I think those may be weevil eggs.  See these links.

http://www.scienceboard.net/community/perspectives.239.html (http://www.scienceboard.net/community/perspectives.239.html)

http://blog.redweevil.com/album-pics/22/ (http://blog.redweevil.com/album-pics/22/)

I don't know why you want to wait and see what hatches before treating it.  From the picture, it looks like several of the eggs hatched.

I think Mr. Clean is right. I saw some weevil couples on top of each other... So it's the special time of year.  ;D They were on my ndm #4 so I crushed those horny mofos... lol    Trying to spread your population and eat up my trees? I don't think so....  :P



Very well stated.  ;D
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: adiel on April 17, 2012, 03:40:03 PM
Lizard Eggs ;)  But seriously have you checked the big mango book?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Fruitzilla on April 17, 2012, 06:29:58 PM
I am not sure what eggs those are from, but agree to let nature take its course first.  A balanced garden is a healthy garden.

Regarding the Anthracnose; my mango's had (note past tense  ;D) severe anthracnose because they were uncared for as this property sat empty for four years before I purchased it.  I used a new earthfriendly product from Organic Labs http://www.organiclabs.com/Retail.html  (http://www.organiclabs.com/Retail.html) called Plant Doctor and the Anthracnose cleared up completely!
You can get it at Home Depot .. I also got their Fruit Maker as a folier spray of Potassium.  It was developed at Texas A&M as a form of Potassium that uptakes significantly more than granular. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mr. Clean on April 17, 2012, 06:37:58 PM
I noticed some Anthracnose on my mangoes and sprayed them with copper.  How long does it take for the Anthracnose to clear up?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: murahilin on April 17, 2012, 08:10:58 PM
Lizard Eggs ;)  But seriously have you checked the big mango book?
Good idea. I will check it later.

Honestly, I don't really care what they are as you can probably tell from my anti spraying attitude. I would probably leave them along regardless. I just posted so others would post stuff to get the thread going so it could be a good reference.


Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tim on April 17, 2012, 08:23:54 PM
Been a bit neglected huh? ;D
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fruitlovers on April 18, 2012, 01:59:19 AM
I think those may be weevil eggs.  See these links.

http://www.scienceboard.net/community/perspectives.239.html (http://www.scienceboard.net/community/perspectives.239.html)

http://blog.redweevil.com/album-pics/22/ (http://blog.redweevil.com/album-pics/22/)

I don't know why you want to wait and see what hatches before treating it.  From the picture, it looks like several of the eggs hatched.

Palm weevil eggs on mangos? I didn't think mangos are a host plant for palm weevil?
Agreed, plus, that Science Advisory Board does not even list the U.S. as a country affected.

This nasty red palm weevil has already been found in Orange County, California:
http://cisr.ucr.edu/red_palm_weevil.html (http://cisr.ucr.edu/red_palm_weevil.html)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on April 23, 2012, 08:39:43 PM
One thing to keep in mind here -- copper will not clear up (ie, remove) existing anthracnose damage on leaves / fruit. It will simply prevent anthracnose infection on uninfected leaves / fruit.

I noticed some Anthracnose on my mangoes and sprayed them with copper.  How long does it take for the Anthracnose to clear up?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Fruitzilla on April 24, 2012, 03:18:00 PM
The website states that you can get it at HD, but HD only carries a different product then the one shown on the vendor website. The HD version is a combo product that is not shown in the vendor website.

Do you have a HD sku number for the Organocide™ Plant Doctor?

The sku is on this http://www.organiclabs.com/Images/LabelImages/Plant%20Doctor%20Back%20Label%20Booklet%20Instructions%20for%20Use.pdf (http://www.organiclabs.com/Images/LabelImages/Plant%20Doctor%20Back%20Label%20Booklet%20Instructions%20for%20Use.pdf)
It is at the Home Depot in Jupiter and you can also find it online at Ebay. 
It clears up Anthracnose faster and better than anything I have ever used. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Greg1029 on April 24, 2012, 07:06:12 PM
I am not sure what eggs those are from, but agree to let nature take its course first.  A balanced garden is a healthy garden.

Regarding the Anthracnose; my mango's had (note past tense  ;D) severe anthracnose because they were uncared for as this property sat empty for four years before I purchased it.  I used a new earthfriendly product from Organic Labs http://www.organiclabs.com/Retail.html  (http://www.organiclabs.com/Retail.html) called Plant Doctor and the Anthracnose cleared up completely!
You can get it at Home Depot .. I also got their Fruit Maker as a folier spray of Potassium.  It was developed at Texas A&M as a form of Potassium that uptakes significantly more than granular. 
FYI, this is Agri-Fos and you can find it everywhere.  Also, it's not totally organic like they lead you to believe but supposed to be a very effective Fungicide (and fertilizer).  I started using it as a foiler spray when I noticed fungal problems on my mangos. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: puglvr1 on April 24, 2012, 07:32:23 PM
Enduser...the HD SKU # for the Plant Doctor is #659-548 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: demingcr on April 25, 2012, 06:15:16 PM
Hello everyone.

First and foremost sorry for making my first post a question, I've been "lurking" for a bit and stealing all your wonderful opinions and ideas while planting a tropical garden :P. I know its bad forum/internet etiquette.

I live in Cape Coral, or Lee County in SWFL. I've been purchasing and planting over the past few months in an attempt to both have tons of fresh fruit for my family, but also trying to get rid of my 'lawn' (such as FL lawns are without chemicals and regular watering... weed plantations that is). I purchased a "Glenn" variety mango in a 7 gallon from a local nursery here (Top Tropicals retail center, if that matters) and planted it in my back yard. That was around 3 months ago. Since then, it's flowered and set fruit, one is rather large and two are starting to grow. I've noticed that it is getting a concerning amount of browning at the tips of its leaves that my other Mango trees do not seem to exhibit, but otherwise seems like a healthy tree. I'm looking for advice on what it could be and any possible solutions, my initial thoughts are wind burn and/or salt burn due to having to hand water frequently due to our winter drought, and the abnormally windy days we've been having (this past weekend for instance with its 20 mph+ winds).

I have attached 4 pictures, the first 2 are a Nam Doc Mai variety I bought about 1 month after the Glenn. It was a 15 gallon from a different nursery (fruitscapes on pine island in north lee county) and it seems extremely happy with no leaf burn.. some of the leaves are tattered but that was from the truck ride home tearing the leaves a bit. The NDM pictures are for comparison to the Glenn. The NDM is planted in my front yard, where the soil is much sandier. Both locations receive around the same light.
The next 2 pictures are the Glenn, while it is flushing and holding onto three fruit, the leaves shown concern me.

NDM
(http://s16.postimage.org/cvoxw9cip/NDM.jpg) (http://postimage.org/image/cvoxw9cip/)
NDM pic #2
(http://s17.postimage.org/hymcl3kmz/NDM2.jpg) (http://postimage.org/image/hymcl3kmz/)
Top of the Glenn / new flushes and fruit
(http://s17.postimage.org/5zaudsf23/GLENN2.jpg) (http://postimage.org/image/5zaudsf23/)
Example of the browned leaves
(http://s17.postimage.org/h05zit7az/GLENN.jpg) (http://postimage.org/image/h05zit7az/)

Thanks for the look at the thread!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on April 25, 2012, 07:41:03 PM
My take would be minor salt / fert burn. Overall the tree looks quite healthy though.

Hopefully Har will chime in with some wisdom.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on April 25, 2012, 11:19:03 PM
My take would be minor salt / fert burn. Overall the tree looks quite healthy though.

Hopefully Har will chime in with some wisdom.
From what I can see, I am leaning toward Jeff's diagnosis.  While it is common in Florida to see mangoes with brown leaf tips, it also appears to minor burn due to excess fert or mineral burn.  Without knowing more as to your care and conditions, the cause (soil, salt, fert, etc.) would be difficult.  How close to the Gulf are you ?  Do you fertilize the tree, if so, with what and how much and how often ?  Have you applied any other nutritional supplements or soil amendments ?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: demingcr on April 26, 2012, 12:07:59 AM
I'm not far from water, around a mile,  but it is a large river brackish river that feeds into the Gulf called the Caloosahatchee. From the gulf itself I am probably at least 10 miles. However, Cape Coral is known for its massive amounts of water ways and canals that branch off from the river and I'm about 1000 or less feet from one of those. When I planted it i mixed black kow composted manure with the soil at about a 50-50 ratio. The black kow compost was rated as .5/.5/.5, but i'm not sure if fertilizer was added to the compost or not.. it's the typical bag you see in the home improvement stores. The soil was sandy but more compact than what I have out front which seems like loose packed sand, I could take a picture of it if that would help. I fertilized it with a 6-4-6 "citrus / avocado / mango" fert from one of the home improvement stores, I don't quite remember the brand name but it was similar to the Vigo brand (or was Vigo). I fertilized by sprinkling over the top at about 1/2 (or less) the recommended strength for the trunk width as the lady I bought the plant from said it was already fertilized and wouldn't have to fertilize for a month or two, which was the period of time i waited. That was about 1 month ago. From the time i bought it till now it's rained maybe twice, one of which was this past weekend, so I've been hand watering from city tap 2 to 3 times a week.

The only other 'event' between planting and now is that it got a bit cold and windy for 3-4 days in February  (45+ degrees, though) for 3 to 4 days, and it just did the same weather pattern again this past weekend, although it was preceded by about 3 inches of rain.


My take would be minor salt / fert burn. Overall the tree looks quite healthy though.

Hopefully Har will chime in with some wisdom.
From what I can see, I am leaning toward Jeff's diagnosis.  While it is common in Florida to see mangoes with brown leaf tips, it also appears to minor burn due to excess fert or mineral burn.  Without knowing more as to your care and conditions, the cause (soil, salt, fert, etc.) would be difficult.  How close to the Gulf are you ?  Do you fertilize the tree, if so, with what and how much and how often ?  Have you applied any other nutritional supplements or soil amendments ?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Greg1029 on April 27, 2012, 03:39:30 AM
Enduser...the HD SKU # for the Plant Doctor is #659-548

Thanks pug, unfortunately this item is not available in my area.
Enduser,  Maybe you missed my previous post, Agri-Fos is the same thing (EPA 71962-1).  You should have no problem finding it.

Greg
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: puglvr1 on April 27, 2012, 10:05:57 AM
 

[/quote] from Greg1029
FYI, this is Agri-Fos and you can find it everywhere.  Also, it's not totally organic like they lead you to believe but supposed to be a very effective Fungicide (and fertilizer).  I started using it as a foiler spray when I noticed fungal problems on my mangos. 
[/quote]


Hi Greg, I think you're right...

The down side with getting Agri Fos at least for me is the added shipping cost (which I hate paying) but I know sometimes its unavoidable if that's the only way to get it. The large qt. size at HD for Plant Doctor is $17.29 and the cheapest I found online for Agri-fos is $22 with free shipping but its a Pint (16 oz.)I've never  seen agri-fos anywhere around locally sold.

Enduser...since you live in Tampa maybe you can check at a Hydrophonics store and see "if" they have it or can order it for you? Unfortunately, I live in a very small town and don't have one in my area...

Nancy

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: natsgarden123 on April 30, 2012, 06:07:42 PM
This is a Lemon Zest which was planted 4 or 5 months ago- it was dormant all winter-there is some growth just pushing out- the leaves don't look very healthy- I have watered this-nothing else. None of the other mango tree have this.


(http://s7.postimage.org/9injosvnb/P1040597.jpg) (http://postimage.org/image/9injosvnb/)

(http://s7.postimage.org/irppyx4jb/P1040598.jpg) (http://postimage.org/image/irppyx4jb/)

(http://s7.postimage.org/cff62tquv/P1040599.jpg) (http://postimage.org/image/cff62tquv/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on April 30, 2012, 06:13:57 PM
Looks like cold wind burn. Either the other trees were slightly more protected, or the LZ happens to be more sensitive.

You planted your best tasting mango near the street, where the mango thieves will strip it bare!

This is a Lemon Zest which was planted 4 or 5 months ago- it was dormant all winter-there is some growth just pushing out- the leaves don't look very healthy- I have watered this-nothing else. None of the other mango tree have this.


(http://s7.postimage.org/9injosvnb/P1040597.jpg) (http://postimage.org/image/9injosvnb/)

(http://s7.postimage.org/irppyx4jb/P1040598.jpg) (http://postimage.org/image/irppyx4jb/)

(http://s7.postimage.org/cff62tquv/P1040599.jpg) (http://postimage.org/image/cff62tquv/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: natsgarden123 on April 30, 2012, 06:18:16 PM
Looks like cold wind burn. Either the other trees were slightly more protected, or the LZ happens to be more sensitive.

You planted your best tasting mango near the street, where the mango thieves will strip it bare!

This is a Lemon Zest which was planted 4 or 5 months ago- it was dormant all winter-there is some growth just pushing out- the leaves don't look very healthy- I have watered this-nothing else. None of the other mango tree have this.


(http://s7.postimage.org/9injosvnb/P1040597.jpg) (http://postimage.org/image/9injosvnb/)

(http://s7.postimage.org/irppyx4jb/P1040598.jpg) (http://postimage.org/image/irppyx4jb/)

(http://s7.postimage.org/cff62tquv/P1040599.jpg) (http://postimage.org/image/cff62tquv/)

Thank You Jeff  :)

Interesting that none of the other trees have it.   Maybe the cold burn is why this tree is behind the others in growth flushes?
Do I need to do anything?

I know its close to the street-I'm attaching security cameras to it.  The HOA will be the first to debow my mangos, I'm sure...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: zands on April 30, 2012, 06:42:39 PM
Are you fertilizing it? Here are the standard Zill directions http://farm7.static.flickr.com/6015/5905298900_05f84f80ee_b.jpg (http://farm7.static.flickr.com/6015/5905298900_05f84f80ee_b.jpg) I tuck the fertilizer under the mulch and try to mix it in a bit with the soil there....by hand. 8-3-9 from Excalibur will do the trick





Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: natsgarden123 on April 30, 2012, 06:49:35 PM
Are you fertilizing it? Here are the standard Zill directions http://farm7.static.flickr.com/6015/5905298900_05f84f80ee_b.jpg (http://farm7.static.flickr.com/6015/5905298900_05f84f80ee_b.jpg) I tuck the fertilizer under the mulch and try to mix it in a bit with the soil there....by hand. 8-3-9 from Excalibur will do the trick

I have been guilty of over-fertilization so I was waiting . I'm planning on doing it this coming weekend.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on April 30, 2012, 06:49:49 PM
Cold wind burn is hit and miss. For example, my lancetilla got it but not the PSM right beside it. I'd leave it alone, unless Har or one of the other forum wizards thinks that it's something different.

The LZ appears to be a vigorous / upright grower, so it will no doubt catch up with your other trees :-).

Thank You Jeff  :)

Interesting that none of the other trees have it.   Maybe the cold burn is why this tree is behind the others in growth flushes?
Do I need to do anything?

I know its close to the street-I'm attaching security cameras to it.  The HOA will be the first to debow my mangos, I'm sure...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: natsgarden123 on April 30, 2012, 06:53:45 PM
Cold wind burn is hit and miss. For example, my lancetilla got it but not the PSM right beside it. I'd leave it alone, unless Har or one of the other forum wizards thinks that it's something different.

The LZ appears to be a vigorous / upright grower, so it will no doubt catch up with your other trees :-).

Thank You Jeff  :)

Interesting that none of the other trees have it.   Maybe the cold burn is why this tree is behind the others in growth flushes?
Do I need to do anything?

I know its close to the street-I'm attaching security cameras to it.  The HOA will be the first to debow my mangos, I'm sure...

Thanks for the advice :)

I was planning to fertilize this weekend-should I hold off on this tree, because of the damaged leaves? 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on April 30, 2012, 07:03:12 PM
If it was me, I'd go ahead and give it some fert.

Thanks for the advice :)

I was planning to fertilize this weekend-should I hold off on this tree, because of the damaged leaves?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: zands on April 30, 2012, 07:14:12 PM


I have been guilty of over-fertilization so I was waiting . I'm planning on doing it this coming weekend.

I have not burned any young mangoes or citrus while fertilizing at the Zill rates. Plus we are talking about high quality NPK fertilizer with minor elements. These type fertilizers always have a coated time release nitrogen. So harder for the nitrogen to burn anything.... it can be done but you have to make an effort. I once burned a nice ornamental vine with cheap 10-10-10 fertilizer. The nitrogen in that just goes into action, not a time release nitrogen. For kicks I feed bananas that cheap 10-10-10 or 6-6-6. Papayas would also probably benefit. No minor elements in them. Just N and P and K.

Also it is much easier to burn a plant in a pot than one in the ground.......The vine I burned was in a pot

You can also spray your mangoes with Southern Ag citrus foliar found at Home Depot. This really gets the minor elements into your young trees. Even better is Keyplex foliar but I have never used it.

This dewd dude Patrick has a really good fertilization plan http://forums.gardenweb.com/forums/load/tropicalfruits/msg1222445314042.html?38 (http://forums.gardenweb.com/forums/load/tropicalfruits/msg1222445314042.html?38)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on April 30, 2012, 07:45:05 PM
hehe that's Patrick. He apparently has awesome soil like mrs Nat. Jealousy detected.

This dude has a really good fertilization plan http://forums.gardenweb.com/forums/load/tropicalfruits/msg1222445314042.html?38 (http://forums.gardenweb.com/forums/load/tropicalfruits/msg1222445314042.html?38)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on April 30, 2012, 07:51:23 PM
hehe that's Patrick. He apparently has awesome soil like mrs Nat. Jealousy detected.

This dude has a really good fertilization plan http://forums.gardenweb.com/forums/load/tropicalfruits/msg1222445314042.html?38 (http://forums.gardenweb.com/forums/load/tropicalfruits/msg1222445314042.html?38)
Yeah he mixes some concoction in his caldron that his plants love...I have heard they can be seen glowing at night  ;) ;D :o
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Patrick on April 30, 2012, 08:07:04 PM
Thats funny, the first thing I thought of when I started reading this post was (hmmmm... Time for 10lbs 8-3-9, 2:1 SoAg Foliar (1gal), 1lb Sequestrene 138fe, and a bag of Epsom salts for good measure! Just kidding of course..

I do tend to get a little out of control with the nutrition, if only I would apply it to myself and not just my plants..

As for a glow, I have noticed some of the smaller neighborhood animals with strange growths!

Fact is I do have sandy soil, the only rock I have found in my yard in the first five feet is small pieces of concrete from the original construction back in the early 50's, most of the nutrition goes right through the soil to the water table.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: natsgarden123 on April 30, 2012, 08:27:03 PM
Those mixes are a bit too complicated for me-although Patrick's plants are beautiful

I have some Excalibur Fertilizer...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Patrick on May 01, 2012, 03:27:31 PM
Thanks Nat! Actually, the Rare Fruit Council "Fruitilizer" that Excalibur sells is my primary fertilizer..
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 01, 2012, 09:43:22 PM
Lots of good advice already given.  I go with minor salt burns also. 

[Potassium deficiency usually shows more extensive marginal burning up the sides of leaves, not just the tips.]

In case you didn't catch it from the link Zands provided showing the planting directions on the back side of a Zill name tag,

freshly planted MANGOS DO NOT LIKE BLACK COW!  And big ones don't need it.  Mangos like sand.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: natsgarden123 on May 01, 2012, 10:55:23 PM
May be a dumb question, but is there any benefit ( or downside) to planting while its raining a lot? 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on May 02, 2012, 12:40:20 AM
May be a dumb question, but is there any benefit ( or downside) to planting while its raining a lot?
you get wet   ;D
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mr. Clean on May 02, 2012, 01:31:34 AM
May be a dumb question, but is there any benefit ( or downside) to planting while its raining a lot?

The upside is you won't have to irrigate as much during the rainy season to get your new trees established.   This may save you time.  :)  The downside is that by not irrigating as often, you won't see your trees as often and be able to provide updates on the forum as often.   ;)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fruitlovers on May 02, 2012, 04:57:11 AM
May be a dumb question, but is there any benefit ( or downside) to planting while its raining a lot?

Big benefit with most fruit trees, as they don't even notice they're being transplanted: no transplant shock. But mangos are so hardy, roots not so sensitive, and drought tolerant, that this doesn't seem to apply to them. Transplanting in cloudy or rainy weather is big plus with almost everything else.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: natsgarden123 on May 02, 2012, 10:02:12 AM
My thought was with a lot of rain, the fertilizer will get washed down much more quickly. I was wondering if it really mattered.

One benefit, for me anyway, is that I love to garden while its raining-it keeps me cool...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Pancrazio on May 06, 2012, 05:20:49 PM
As some of you may know, i have had two flowering flushes on my mango. The first one reached its peak during the end of march, while my mango was still covered by my removable structure. Some flowers of this early bloom died in febrauary, before actually bloom, and the plant grew another flush of flower that is blooming right now.

However, during march, i discovered that the flowers formed in january weren't healty at all. First i discovered what now looks like a mango malformation disease on a panicle (and even if i still hope that it was just a retarded effect of the cold, i have little hope left), panicle wich i removed as soon as i realized (or suspected) what was going on. Not much later, one of the panicles seemed to get a little black spot, that increase in size in the following days. Since there weren't fruits set on this panicle, i also removed it.
Now, the bad news is that pruning the panicle hasn't stopped the black disease/necrosis. This is what i have now on the twig:

(http://i.imgur.com/Zb1II.jpg?1)

What do you think i should do? The black disease is slowly but steadly spreading. As you can see the plant has already been sprayed with sulphur/copper (i have sprayed it during all the winter because i feared fungal attacks)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlyingFoxFruits on May 06, 2012, 05:24:01 PM
I think if you cut they wood back to a healthy part of the branch, it will be fine...and also if u leave it alone, it should be fine.

It looks like a mango that wanted to bloom, but got hit by cold...or maybe bloomed, and spikes fell, and got hit by cold..

Hope it pulls through! I'm sure it will leaf out nicely soon!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 06, 2012, 10:11:20 PM
It may be a bacterial infection inside the tender wood.  I recommend cutting off the affected part, cutting a couple of inches below the bottom edge of the rot.  If there is any dark stain inside the wood where you cut it, sanitize the clippers with alcohol or pinesol or chlorox, then cut another inch or two off.  Then spray or drench with a systemic bactericide / fungicide.  Copper and sulfur work mainly on the surface.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlyingFoxFruits on May 06, 2012, 10:25:25 PM
It may be a bacterial infection inside the tender wood.  I recommend cutting off the affected part, cutting a couple of inches below the bottom edge of the rot.  If there is any dark stain inside the wood where you cut it, sanitize the clippers with alcohol or pinesol or chlorox, then cut another inch or two off.  Then spray or drench with a systemic bactericide / fungicide.  Copper and sulfur work mainly on the surface.

on second thought, I think it's best to take guanabanus's advice on this one!

better safe than sorry!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Pancrazio on May 07, 2012, 07:14:20 PM
Thank you guys. I have done as told. I used alcool on scissors and on the twig just before cutting. But i havent any systemic fungicide at hand right now.
Let's hope it will stop spreading. Im pretty sure it comes from the pretty rainy spring we are having here. A bless after the very dry winter, but a serius problem for the tropical plants that need sun and heat after having spent last 6 months in a cold dark environment.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangomandan on May 08, 2012, 01:28:42 PM
So far every Rosigold mango I've picked has shown significant (disgusting) stem-end rot as it ripens.

Does anyone know of a post-harvest treatment of the fruit that would be practical for a  home grower to try?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on May 10, 2012, 08:20:21 PM
Any thoughts:


(http://s14.postimage.org/he5j6hrwt/Plants_5_10_12_005.jpg) (http://postimage.org/image/he5j6hrwt/)

(http://s7.postimage.org/611qgqvyf/Plants_5_10_12_006.jpg) (http://postimage.org/image/611qgqvyf/)


Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fruitlovers on May 10, 2012, 11:22:44 PM
Any thoughts:


(http://s14.postimage.org/he5j6hrwt/Plants_5_10_12_005.jpg) (http://postimage.org/image/he5j6hrwt/)

(http://s7.postimage.org/611qgqvyf/Plants_5_10_12_006.jpg) (http://postimage.org/image/611qgqvyf/)

Looks like you recently sprayed the leaves? Is it copper sulfate? Looks like leaf burn from the spray. You don't have any sucking insect on the leaves?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 11, 2012, 12:27:34 AM
Did you look at those leaves with a magnifier?  It might be damage from thrips.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlyingFoxFruits on May 11, 2012, 12:32:40 AM
Ya,
looks like this is a member of the blue man-go group,

or Somebody beat this plant with the copper stick.


Any thoughts:


(http://s14.postimage.org/he5j6hrwt/Plants_5_10_12_005.jpg) (http://postimage.org/image/he5j6hrwt/)

(http://s7.postimage.org/611qgqvyf/Plants_5_10_12_006.jpg) (http://postimage.org/image/611qgqvyf/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 11, 2012, 12:37:21 AM
More likely it is bacterial leaf spot.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on May 11, 2012, 12:40:17 AM
I think Oscar has it. Looks like phytotoxicity due to copper. The copper was either too strong and/or was applied with zinc sulphate.

Any thoughts:


(http://s14.postimage.org/he5j6hrwt/Plants_5_10_12_005.jpg) (http://postimage.org/image/he5j6hrwt/)

(http://s7.postimage.org/611qgqvyf/Plants_5_10_12_006.jpg) (http://postimage.org/image/611qgqvyf/)

Looks like you recently sprayed the leaves? Is it copper sulfate? Looks like leaf burn from the spray. You don't have any sucking insect on the leaves?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on May 11, 2012, 06:54:12 AM
From the "blu-evidence" I would agree it was recently copperized however I just received this plant and did not perform the application.  In all fairness, I won't say where it came from other than not Zills or Excalibur).

This damage is only on the leaves on the top portion of the plant (it is about 3+ feet tall in a 3 gallon).  The leaves on the lower portion do not have this damage.

I will break out the magnifying glass and check for thrips.  Assuming its not, anything to do but let it grow thru the dose of copper?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: ShowmeyourKeitts on May 11, 2012, 08:10:16 AM
Looks suspicious for spider mites to me...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 11, 2012, 08:20:04 AM
Thrips is easy to spray for (thrips-damaged leaves are usually worse off than yours);  the bacterial leaf spot is not so easy.  I did an elaborate controlled experiment at Zill's, using half-a-dozen or more treatments, none of which worked.  That was in the mid-1990's.  I assume someone has come up with something by now.

After I remembered to open up your pictures to full size, I noticed that some of the spots have distinct boundaries along secondary or terciary veins.  This is not characteristic of spray damage or of insect damage or of fungal infections, but it is typical of bacterial leaf spot.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on May 11, 2012, 09:33:00 AM
What are the best avenues to tackle this problem.  If its a bacterial thing and spraying will not help, since it is a small tree and the lower portion is not affected, should I cut it back?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on May 11, 2012, 11:28:40 AM
Ohh OK. I thought that bacterial blackspot was a bit darker and penetrated through to the top side of the leaf but trust your judgement.

After I remembered to open up your pictures to full size, I noticed that some of the spots have distinct boundaries along secondary or terciary veins.  This is not characteristic of spray damage or of insect damage or of fungal infections, but it is typical of bacterial leaf spot.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on May 11, 2012, 11:31:02 AM
Does not look like bacterial black spot (which would call for copper treatments) but of course I could be wrong.

Should I not prune and spray (and copper fungicide, from Southern Ag) or prune below the damaged area and spray as normal ?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on May 11, 2012, 01:16:06 PM
What variety of mango is the one that has this?

I get this on my Kent and Irwin mostly and sometimes on my Keitt. Most other mangoes seem to be free of this problem.

Not all copper products work on this infestation. You must make sure that it says for use on bacterial spot. I would think that a systemic type fungicide would be a better product.
Its a Frances Hargrave (according to Fairchild, parentage is a Haden seedling).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on May 11, 2012, 01:21:25 PM
OK I know where it's from :-).

What variety of mango is the one that has this?

I get this on my Kent and Irwin mostly and sometimes on my Keitt. Most other mangoes seem to be free of this problem.

Not all copper products work on this infestation. You must make sure that it says for use on bacterial spot. I would think that a systemic type fungicide would be a better product.
Its a Frances Hargrave (according to Fairchild, parentage is a Haden seedling).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on May 11, 2012, 02:56:28 PM
What variety of mango is the one that has this?

I get this on my Kent and Irwin mostly and sometimes on my Keitt. Most other mangoes seem to be free of this problem.

Not all copper products work on this infestation. You must make sure that it says for use on bacterial spot. I would think that a systemic type fungicide would be a better http://m.tsn.ca/ (http://m.tsn.ca/) product.
Its a Frances Hargrave (according to Fairchild, parentage is a Haden seedling).


There you have it: A. highly susceptible - MA 162, MA 165, MA 152 (Kent), MA 151 (Keitt), MA 150 (Irwin), and MA 146 (Haden);

I just checked my Kent, and Irwin mangoes and they both have it on the older leaves. None of my other mangoes have it. When I first saw it I did an alternating soil drench using Cleary 3336F, and Dithane M-45, and also sprayed the tree from top to bottom including the underside of leaves. Both these fungicides are broad spectrum systemic types. This will stop it from spreading but it will not remove it from the older leaves. In other words it will kill the bacteria but it will not remove the damage that it caused on the older leaves. But since you don't see it happening on the new leaves you know it did the job.

The ratios to use to combat rust and bacterial spot are as follows for planted trees. If growing in a pot, pour the mix slowly until runoff at the bottom occurs then stop and save any leftover mix for the next time or apply to another plant. Notice that the ratios are different depending on the type of fungicide used.

-Cleary 3336f

Soil drench: 1 tsp to 1 gallon of water.
Foliage spray: 1 tsp to 1 gallon of water.

-Dithane M-45

Soil drench: 2 Tbls to 1 gallon of water.
Foliage spray: 2 Tbls to 1 gallon of water.

Apply only one type of fungicide per treatment cycle. Reapply after 10-14 days but this time use the second fungicide. After the 10-14 day period has lapsed now go back to the previous fungicide again. Repeat this cycle until you have used each fungicide two times or applied this treatment four times.
Should I otherwise continue care as normal with fertilizer, etc.?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 11, 2012, 11:34:10 PM
Enduser,
Thank you for the info on copper oxychloride.  I have never used that.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: natsgarden123 on May 22, 2012, 09:07:52 AM
My Harvest Moon mango has finally put out some new growth. However, it looks a bit droopy- Its not dry ( It been raining heavily here) and my soil is sandy so I doubt its too wet. What's wrong, if anything is? Does anyone have much experience with the tree?

(http://i1112.photobucket.com/albums/k495/nsobgyn/temporary-6.jpg)

(http://i1112.photobucket.com/albums/k495/nsobgyn/temporary-5.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Sleepdoc on May 22, 2012, 09:34:35 AM
My Harvest Moon mango has finally put out some new growth. However, it looks a bit droopy- Its not dry ( It been raining heavily here) and my soil is sandy so I doubt its too wet. What's wrong, if anything is? Does anyone have much experience with the tree?



Looks good to me ...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 22, 2012, 09:40:49 AM
Normal
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: natsgarden123 on May 22, 2012, 09:52:43 AM
That's good to hear- interesting how the growth looks so different compared to my other trees.- It really is droopy compared to all the others... Guess to each tree, its own.  :)

I know the variety is relatively new. Has anyone had this tree for more than one year? Is it a vigorous grower?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on May 22, 2012, 10:15:13 AM
That's good to hear- interesting how the growth looks so different compared to my other trees.- It really is droopy compared to all the others... Guess to each tree, its own.  :)

I know the variety is relatively new. Has anyone had this tree for more than one year? Is it a vigorous grower?
Yuo realize you have planted this far to close to the street...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: murahilin on May 22, 2012, 10:17:18 AM
Yuo realize you have planted this far to close to the street...

Doesn't look too close to the street to me.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: natsgarden123 on May 22, 2012, 10:21:18 AM
That's good to hear- interesting how the growth looks so different compared to my other trees.- It really is droopy compared to all the others... Guess to each tree, its own.  :)

I know the variety is relatively new. Has anyone had this tree for more than one year? Is it a vigorous grower?
Yuo realize you have planted this far to close to the street...

Its about 14+ft from the street, although still in reach of the mango thieves... my husband wanted it  there...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: cbss_daviefl on May 28, 2012, 08:09:32 PM
Here is my Kent.  My uneducated guess is potasium deficiency.  Can someone please confirm?  Also note all the chunks missing from the new growth from root weevils.

(http://s16.postimage.org/4r95qzbgx/Kent_120528_Nutritional.jpg) (http://postimage.org/image/4r95qzbgx/)

Here is my blotchy Dot.  PPK is similar.

(http://s13.postimage.org/eitv9muqr/Dot_120528_Nutritional.jpg) (http://postimage.org/image/eitv9muqr/)

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: BestDay on June 02, 2012, 03:13:32 PM
Hi guys, I found these under the leaves of the growth flush on my NDM#4.  The new leaves are curling with these bugs under most of the upper new leaves.  Should I worry about them or will they go away when the new leaves harden up?

(http://i1145.photobucket.com/albums/o518/BestDay23/bugslg.jpg)

Thanks,
Bill
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlyingFoxFruits on June 02, 2012, 05:58:38 PM
those aphis can be sprayed off with hose!!

also sucking insects cause leaf deformations!!!

good luck to u and your trango mee
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on June 02, 2012, 11:32:26 PM
It may take more than just water to remove them...before any pesticides are used I would try the soap water spray.  I would also check out your other plants/shrubs in your hard as aphids are very common and they may have originated elsewhere.  As always, you must eliminate the source/host to fix the problem outright.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: natsgarden123 on June 03, 2012, 01:17:13 PM
It may take more than just water to remove them...before any pesticides are used I would try the soap water spray.  I would also check out your other plants/shrubs in your hard as aphids are very common and they may have originated elsewhere.  As always, you must eliminate the source/host to fix the problem outright.

 I have tried soap sprays-a number of homemade concoctions ( found on Garden Web) and some commercial products-I have found that they don't work at all- that's just my experience.  What do you use? What does it work for?

Nat
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on June 03, 2012, 02:44:10 PM
It may take more than just water to remove them...before any pesticides are used I would try the soap water spray.  I would also check out your other plants/shrubs in your hard as aphids are very common and they may have originated elsewhere.  As always, you must eliminate the source/host to fix the problem outright.

 I have tried soap sprays-a number of homemade concoctions ( found on Garden Web) and some commercial products-I have found that they don't work at all- that's just my experience.  What do you use? What does it work for?

Nat
While I was just commenting on the use of water vs soap water solution, aphids can be very stubborn and potentially problematic.  While I know some are against pesticides, it could call for a sevin treatment.  For those thinking of an oil application, as we are entering summertime and the sun is strong/temps are high, be very mindful it is not a good time to apply at the risk of burn/damage to the foliage.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fruitlovers on June 03, 2012, 11:59:53 PM


 I have tried soap sprays-a number of homemade concoctions ( found on Garden Web) and some commercial products-I have found that they don't work at all- that's just my experience.  What do you use? What does it work for?

Nat

Hi Nat, you're definitely wrong about that. Soap sprays do work on aphids. Will kill them right on contact. My guess is that you did not use a strong enough concentration. You can use any dishwashing liquid soap, like Ivory, and experiment with the correct concentration. In my opinion aphids are the easiest of all pest to kill and control because they are very soft bodied. Often you have to get rid of the ants which mine them, and are the main source of the problem.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: murahilin on June 04, 2012, 12:24:20 AM
Hi Nat, you're definitely wrong about that. Soap sprays do work on aphids. Will kill them right on contact. My guess is that you did not use a strong enough concentration. You can use any dishwashing liquid soap, like Ivory, and experiment with the correct concentration. In my opinion aphids are the easiest of all pest to kill and control because they are very soft bodied. Often you have to get rid of the ants which mine them, and are the main source of the problem.

Exactly! Many people don't realize they need to control the ants to control the aphids.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 04, 2012, 12:31:56 AM
Yes on the liquid dish soap (not liquid hand soap).

Generally the recommendations run 1 to 1.5 fluid ounces per gallon of water to kill soft-bodied insects.  If you want to kill tougher insects like hymenopterans, they say one cup per gallon (this might kill plants).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: puglvr1 on June 04, 2012, 09:05:52 AM
Here is my Kent.  My uneducated guess is potasium deficiency.  Can someone please confirm?  Also note all the chunks missing from the new growth from root weevils.

(http://s16.postimage.org/4r95qzbgx/Kent_120528_Nutritional.jpg) (http://postimage.org/image/4r95qzbgx/)

Here is my blotchy Dot.  PPK is similar.

(http://s13.postimage.org/eitv9muqr/Dot_120528_Nutritional.jpg) (http://postimage.org/image/eitv9muqr/)

Brandon, I bet spraying your trees with something like "Citrus Nutritional Spray" by Southern Ag http://www.centralgarden.com/brands/southern-ag/southern-ag-insecticides-citrus-nutritional-spray-12ea-1pt.html (http://www.centralgarden.com/brands/southern-ag/southern-ag-insecticides-citrus-nutritional-spray-12ea-1pt.html)
I'm sure there are many different ones out there that will work as well. Just remember to spray it after sunset so the leaves have a chance to completely dry so you don't sunburn the leaves.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: cbss_daviefl on June 04, 2012, 09:49:30 AM
I have been using Fer-A-Gro, which is Magnesium 2.64%, Sulfer 2.9, Boron 0.01, Chelated Iron 1.59, Chelated Manganese 1.53, Molybdenum .001, and Chelated Zinc 0.94. 

Here is the history of what I have done with the pictured trees:

I sprayed Fer-A-Gro on 2/16, 4/23, and last night.  On 3/3 and 5/5, I applied 3 pounds of 8-3-9-3 to that tree with a 5" truck diameter.  On 4/14, I did a Seq 138 chelated iron drench, 8 tablespoons.  On 5/31, I got a PH tester and got a reading a hair below 6 so I applied 4 cups of dolomite, trying to get it to 6.5.

Anyone see something wrong with dosages or frequency or anything I am missing?

Here is my Kent.  My uneducated guess is potasium deficiency.  Can someone please confirm?  Also note all the chunks missing from the new growth from root weevils.

(http://s16.postimage.org/4r95qzbgx/Kent_120528_Nutritional.jpg) (http://postimage.org/image/4r95qzbgx/)

Here is my blotchy Dot.  PPK is similar.

(http://s13.postimage.org/eitv9muqr/Dot_120528_Nutritional.jpg) (http://postimage.org/image/eitv9muqr/)

Brandon, I bet spraying your trees with something like "Citrus Nutritional Spray" by Southern Ag http://www.centralgarden.com/brands/southern-ag/southern-ag-insecticides-citrus-nutritional-spray-12ea-1pt.html (http://www.centralgarden.com/brands/southern-ag/southern-ag-insecticides-citrus-nutritional-spray-12ea-1pt.html)
I'm sure there are many different ones out there that will work as well. Just remember to spray it after sunset so the leaves have a chance to completely dry so you don't sunburn the leaves.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Pancrazio on June 07, 2012, 06:36:39 PM
(http://i.imgur.com/Zb1II.jpg?1)

After i cutted it seemed to disappear, but during last days it has appeared again lower in the twig, just under the cut, and on another twig.
I sprayed with aliette and tebuconazole. We will see, but i'm somewat scared.   :-[
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 07, 2012, 11:57:21 PM
Alliette drench on the roots is good too.  Check label:  some products say not to spray and drench with same product in close succession, because may overdose.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mr. Clean on August 10, 2012, 01:02:58 AM
I was in my yard wearing a LED white headlamp and noticed that the white weevils were very visible at night.  The contrast of their white bodies, the green leaves, and the darkness really made them very visible.  So I decided to remove some weevils.  The technique that worked best for me was cupping one hand under the weevil on the leaf, then using the other hand to knock the weevil off of the leaf into my other hand.  Then immediately smoosh them.  I wore leather gloves.   My mango trees are relatively small, so this was easy to do.

I noticed several things:

The vast majority of weevils were on mango trees going thru growth flushes (for me those were Coconut Cream, Carrie, and Sunrise).  Perhaps trees going thru growth flushes taste better?
A majority of single weevils were on the underside of the leaves.
A majority of single weevils were on or near the tip of the leaves.
A majority of the time only a single weevil occupied a single leaf (like it was their territory).
A majority of single weevils were on the west side of the tree.
A majority of couple weevils (weevils fornicating) were on the northeast side of the tree.  This was only on my Sunrise.
A majority of couple weevils were closer to the middle of the leaf.

Based on this small sampling...it appears the weevils have a sort of social culture where the single weevils hang out in a certain part of the tree on the underside of tips of leaves.  Couple weevils go to a different part of the tree and occupied a middle part of the leaf.  This was a relatively small sampling, so you may not be able to draw any conclusions. 

Hope this helps in your weevil erradication or at least gets you thinking of ways to get rid of them.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: zands on August 10, 2012, 08:43:16 AM
Put a blue tarp under your tree or part of your tree. Shake some branches. Then you see how many weevils you really have. I was shocked.


----Also spraying with rubbing alcohol plus a little dish detergent.....some say this dries out these weevils and they die. Weevils have a hard shell making them immune to other tricks like insecticidal soap.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on August 10, 2012, 08:48:30 AM
I was in my yard wearing a LED white headlamp and noticed that the white weevils were very visible at night.  The contrast of their white bodies, the green leaves, and the darkness really made them very visible.  So I decided to remove some weevils.  The technique that worked best for me was cupping one hand under the weevil on the leaf, then using the other hand to knock the weevil off of the leaf into my other hand.  Then immediately smoosh them.  I wore leather gloves.   My mango trees are relatively small, so this was easy to do.

I noticed several things:

The vast majority of weevils were on mango trees going thru growth flushes (for me those were Coconut Cream, Carrie, and Sunrise).  Perhaps trees going thru growth flushes taste better?
A majority of single weevils were on the underside of the leaves.
A majority of single weevils were on or near the tip of the leaves.
A majority of the time only a single weevil occupied a single leaf (like it was their territory).
A majority of single weevils were on the west side of the tree.
A majority of couple weevils (weevils fornicating) were on the northeast side of the tree.  This was only on my Sunrise.
A majority of couple weevils were closer to the middle of the leaf.

Based on this small sampling...it appears the weevils have a sort of social culture where the single weevils hang out in a certain part of the tree on the underside of tips of leaves.  Couple weevils go to a different part of the tree and occupied a middle part of the leaf.  This was a relatively small sampling, so you may not be able to draw any conclusions. 

Hope this helps in your weevil erradication or at least gets you thinking of ways to get rid of them.
This has been highly researched/analyzed by the university of Florida *this is nothing new to the area)...Google is a wonderful thing.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangomandan on August 10, 2012, 08:52:16 AM
Sir Cleanliness,  what did you notice about the flying ability of the weevils?

The ones at my house are not "weak" flyers; they're pretty good at flying.   I guess that explains why I haven't had much luck with the tanglefoot on the trunk method.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropicalgrower89 on August 10, 2012, 11:00:36 AM
The best way of destroying white weevils..


(http://s15.postimage.org/beyvannnr/flame_thrower3.jpg) (http://postimage.org/image/beyvannnr/)

Even though the trees would be destroyed, so I wouldn't recommend it.  ;D  :P  ;)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on August 10, 2012, 11:19:27 AM
Sir Cleanliness,  what did you notice about the flying ability of the weevils?

The ones at my house are not "weak" flyers; they're pretty good at flying.   I guess that explains why I haven't had much luck with the tanglefoot on the trunk method.
Yes, they are very good with their wings...flying is not a problem for them.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on August 10, 2012, 11:21:33 AM
I'm aware that due to the high PH of my soil, (7.6), here in central Broward County, that the mango tree's ability to absorb iron is blocked.  Thus, my tree exhibits signs of chlorosis. 
I purchased Southern Ag's Chelated Liquid Iron.  About 10 days ago I applied it as a soil drench.  Yesterday I applied it as a foliar spray.  I haven't yet seen any improvement.  How long should it take to see an improvement in the tree?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: TnTrobbie on August 10, 2012, 12:09:15 PM
When I apply a soil drench (3Tbs/gal...6 yr old tree), I see a change in about 1-2 weeks. The Southern AG Citrus Foilar spray however, is see a change before the end of the day (very diluted chelated liq FE spray stains my leaves). How old is the tree and what volume of Chelated FE did you use per gallon on your tree.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on August 10, 2012, 12:14:09 PM
I'm aware that due to the high PH of my soil, (7.6), here in central Broward County, that the mango tree's ability to absorb iron is blocked.  Thus, my tree exhibits signs of chlorosis. 
I purchased Southern Ag's Chelated Liquid Iron.  About 10 days ago I applied it as a soil drench.  Yesterday I applied it as a foliar spray.  I haven't yet seen any improvement.  How long should it take to see an improvement in the tree?
Are you sure its iron deficiency?  Pictures would help if you can...

You might want to try IronPlex by KeyPlex.  I have had mixed results with SouthernAg products.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on August 10, 2012, 12:51:02 PM
When I apply a soil drench (3Tbs/gal...6 yr old tree), I see a change in about 1-2 weeks. The Southern AG Citrus Foilar spray however, is see a change before the end of the day (very diluted chelated liq FE spray stains my leaves). How old is the tree and what volume of Chelated FE did you use per gallon on your tree.
It's a Cogshall that went from a 3 gallon pot to the yard about 4 years ago.  Produced it's first fruits this season and is currently undergoing some serious growth flush. 
The recommended rate is 1 tablespoon/gal.  Preferring to err on the side of caution, the soil drench was at half that.  Yesterday's foliar spray was at the recommended rate, however.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on August 10, 2012, 12:52:53 PM
. . .Are you sure its iron deficiency?  Pictures would help if you can...

You might want to try IronPlex by KeyPlex.  I have had mixed results with SouthernAg products.
I believe it is an iron deficiency judging by the symptoms.  I'll try and post a pic or two later on as there is a monsoon outside right now.  :o
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on August 10, 2012, 01:07:59 PM
Some pics. . .

(http://s11.postimage.org/out3hjor3/20120810_125432.jpg) (http://postimage.org/image/out3hjor3/)


(http://s9.postimage.org/vgf22k2u3/20120810_125505.jpg) (http://postimage.org/image/vgf22k2u3/)


(http://s15.postimage.org/xvke75pqf/20120810_125631.jpg) (http://postimage.org/image/xvke75pqf/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: TnTrobbie on August 10, 2012, 05:35:22 PM
Are those pics of recent flushes? If yes, on my tree it takes about 2-3 weeks for them to fully green out. Looks like you got some FE staining when the water dries on the leaves in the 2nd and 3rd pic.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on August 10, 2012, 07:03:51 PM
Looks like iron / manganese deficiency. It can take weeks and more than one application to fully correct.

Some pics. . .

(http://s11.postimage.org/out3hjor3/20120810_125432.jpg) (http://postimage.org/image/out3hjor3/)


(http://s9.postimage.org/vgf22k2u3/20120810_125505.jpg) (http://postimage.org/image/vgf22k2u3/)


(http://s15.postimage.org/xvke75pqf/20120810_125631.jpg) (http://postimage.org/image/xvke75pqf/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on August 10, 2012, 07:30:50 PM
Are those pics of recent flushes? If yes, on my tree it takes about 2-3 weeks for them to fully green out. Looks like you got some FE staining when the water dries on the leaves in the 2nd and 3rd pic.
Robbie, those spots aren't FE stains.  It's some discoloration that has appeared on many of the leaves.  I have no idea what causes them.  I've asked around and was told it's normal.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on August 10, 2012, 07:32:39 PM
Looks like iron / manganese deficiency. It can take weeks and more than one application to fully correct.
Thanks, Jeff.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 10, 2012, 11:56:45 PM
Manganese deficiency and mango bacterial leaf spot.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fruitlovers on August 11, 2012, 05:59:21 AM
The best way of destroying white weevils..


(http://s15.postimage.org/beyvannnr/flame_thrower3.jpg) (http://postimage.org/image/beyvannnr/)

Even though the trees would be destroyed, so I wouldn't recommend it.  ;D  :P  ;)

Isn't that one of the forum members starting up the barbecue at the last S. Florida gathering?   ;)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on August 11, 2012, 07:16:14 AM
Manganese deficiency and mango bacterial leaf spot.
Manganese deficiency?  Surprising to hear that. . .or shouldn't I be?  How can you tell the difference between that and iron deficiency?  I've been fertilizing with Vigoro 6-4-6 plus minors approx every 5 weeks or so this summer.
Bacterial leaf spot:  what's the cause, what's the cure?

Thank you!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on August 11, 2012, 08:44:26 AM
Manganese deficiency and mango bacterial leaf spot.
Manganese deficiency?  Surprising to hear that. . .or shouldn't I be?  How can you tell the difference between that and iron deficiency?  I've been fertilizing with Vigoro 6-4-6 plus minors approx every 5 weeks or so this summer.
Bacterial leaf spot:  what's the cause, what's the cure?

Thank you!
Your Vigror 6-4-6 has .05 percent manganese, Excalibur's 8-3-9 has .49 percent manganese.

Bacterial leaf spot -- spray with copper fungicide.  Also, be careful, "as is" it could spread to your other mangoes.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on August 11, 2012, 09:47:31 AM
Your Vigror 6-4-6 has .05 percent manganese, Excalibur's 8-3-9 has .49 percent manganese.

Bacterial leaf spot -- spray with copper fungicide.  Also, be careful, "as is" it could spread to your other mangoes.
From my understanding, Excalibur sells only 50 lb bags of their fertilizer.  Way too much for my needs.  I have only this one Cogshall.  Is there another way to add manganese to the soil?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on August 11, 2012, 10:42:07 AM
Your Vigror 6-4-6 has .05 percent manganese, Excalibur's 8-3-9 has .49 percent manganese.

Bacterial leaf spot -- spray with copper fungicide.  Also, be careful, "as is" it could spread to your other mangoes.
From my understanding, Excalibur sells only 50 lb bags of their fertilizer.  Way too much for my needs.  I have only this one Cogshall.  Is there another way to add manganese to the soil?
Correct, its a 50il bag but it can be used all any plants in your yard (ornamental hedges, palms and even turf).  Your other option is a goo minor element spray.  Do you have a supply house near you that sells KeyPlex?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on August 11, 2012, 05:23:34 PM
Southern Ag has this new product I think might be worth a try:  http://www.southernag.com/docs/labels_msds/eme.pdf (http://www.southernag.com/docs/labels_msds/eme.pdf).  It's their Essential Minor Elements in granular form.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on August 11, 2012, 07:44:20 PM
Southern Ag has this new product I think might be worth a try:  http://www.southernag.com/docs/labels_msds/eme.pdf (http://www.southernag.com/docs/labels_msds/eme.pdf).  It's their Essential Minor Elements in granular form.
I would go with go with liquid as long as you need to supplement...plus KeyPlex is a better product.  Not even sure if that SouthernAg product is available locally and I have never heard of anybody using it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: natsgarden123 on August 12, 2012, 12:57:50 PM
Southern Ag has this new product I think might be worth a try:  http://www.southernag.com/docs/labels_msds/eme.pdf (http://www.southernag.com/docs/labels_msds/eme.pdf).  It's their Essential Minor Elements in granular form.
I would go with go with liquid as long as you need to supplement...plus KeyPlex is a better product.  Not even sure if that SouthernAg product is available locally and I have never heard of anybody using it.

Rob- what form of miconutrients does Excalibur fertilizer use? I was under the impression that it was enough

Nat
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on August 12, 2012, 03:23:30 PM
Southern Ag has this new product I think might be worth a try:  http://www.southernag.com/docs/labels_msds/eme.pdf (http://www.southernag.com/docs/labels_msds/eme.pdf).  It's their Essential Minor Elements in granular form.
I would go with go with liquid as long as you need to supplement...plus KeyPlex is a better product.  Not even sure if that SouthernAg product is available locally and I have never heard of anybody using it.

Rob- what form of miconutrients does Excalibur fertilizer use? I was under the impression that it was enough

Nat
depends on the needs/price/availability and the type of plant. 

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangomandan on August 12, 2012, 09:13:55 PM
The best way of destroying white weevils..


(http://s15.postimage.org/beyvannnr/flame_thrower3.jpg) (http://postimage.org/image/beyvannnr/)

Even though the trees would be destroyed, so I wouldn't recommend it.  ;D  :P  ;)

Isn't that one of the forum members starting up the barbecue at the last S. Florida gathering?   ;)

I remember hearing about the dueling flame thrower barbecue.  It started with a careless remark about Lemon Zest. There was an ill-considered retort along the lines of "Maha yo Mama!"  Fruit Punches were about to be thrown when someone's significant other thought to cut open a nicely ripened Crunchy Lemon jackfruit.  In the end a good time was had by all.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 13, 2012, 11:29:27 PM
In Iron deficiency only the veins stay green.

In Manganese deficiency the veins and a narrow strip of tissue to either side of the veins stay green.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on August 14, 2012, 06:04:30 AM
In Iron deficiency only the veins stay green.

In Manganese deficiency the veins and a narrow strip of tissue to either side of the veins stay green.
Thank you.  That helps.  I have to assume, then, the tree has manganese deficiency, which explains why the iron treatments have made no difference in the tree's appearance.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: natsgarden123 on August 14, 2012, 09:09:28 AM
Southern Ag has this new product I think might be worth a try:  http://www.southernag.com/docs/labels_msds/eme.pdf (http://www.southernag.com/docs/labels_msds/eme.pdf).  It's their Essential Minor Elements in granular form.
I would go with go with liquid as long as you need to supplement...plus KeyPlex is a better product.  Not even sure if that SouthernAg product is available locally and I have never heard of anybody using it.

Rob- what form of miconutrients does Excalibur fertilizer use? I was under the impression that it was enough

Nat
depends on the needs/price/availability and the type of plant.

Rob
??  not sure what you are talking about.
 My question is - is Excalibur Fertilizer enough in terms of nutrition, for most tropical trees we are growing here? I see quite a few people using supplements with it.  What is your take on using Excalibur alone, like they recommend.

 Also, Carbo- the 50 pound bag actually goes pretty quick - its not as big a bag as you might think.  It also has no specific expiration date. And its a bargain. Just my opinion

nat
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: zands on August 14, 2012, 09:53:00 AM
My question is - is Excalibur Fertilizer enough in terms of nutrition, for most tropical trees we are growing here? I see quite a few people using supplements with it.  What is your take on using Excalibur alone, like they recommend.

Very simple answer. My high ph soil blocks absorption (all or in part) of certain minor elements via roots...So must apply them via foliar spray. I don't think your soil has such a bad or any high ph problem. You can ask your local ag agent extension or local master gardeners.
Even if your soil ph is OK you can still help fruit trees with foliars

PJB is probably (I don't know his soil) a very good example of a guy with much better than average fruit trees due to his extensive foliar spray program. His are growing and branching out faster and fruiting faster with good fruit set going by his photos

PJB is actually also applying NPK via foliar. It gets into plant quicker. It is what the pros and citrus orchards might be using because money is on the line and they want their trees to produce! They cannot afford to be casual like a guy with fruit trees in his backyard

In school did you want to be an average student or an excellent student?   8)    Me...so far my fruit trees are average students because I don't use foliars nearly as much as PJB. But I am looking into it for my younger/recently planted fruit trees. I have a ragged avocado (Lula)....just planted last month and can use a PJB intensive and dittos for a new Coc mango tree planted that looks great but I want it to come along fast and produce fast. Because it is centerpiece in my front yard

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: TnTrobbie on August 19, 2012, 04:31:01 PM
Pim Saen Mun. Chlorosis?! Never seen patterns like these  ???

(http://img40.imageshack.us/img40/5136/img1320eq.jpg) (http://imageshack.us/photo/my-images/40/img1320eq.jpg/)
(http://img31.imageshack.us/img31/365/img1322d.jpg) (http://imageshack.us/photo/my-images/31/img1322d.jpg/)
(http://img839.imageshack.us/img839/8725/img1325h.jpg) (http://imageshack.us/photo/my-images/839/img1325h.jpg/)

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 19, 2012, 10:38:49 PM
I don't think these are signs of a deficiency.  Looks more like some chemical exposure.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Pancrazio on September 05, 2012, 06:48:41 PM
My potted mangos are going trought what i think it is the last growt flush of the season.
Unluckly they are showing what seems to be some mineral deficencies. It understandable, I watered them all the summer long with just my well water wich is pretty rich in carbonates.
Now, if someone can tell me what mineral I should give them, I would be grateful. I'm not sure if it is the usual iron issue.

Kensington Pride; just grafted:
(http://i.imgur.com/0vwc9.jpg?1)

Mun (Nam doc mai type):
(http://i.imgur.com/FbSkg.jpg?1)

Both have taken copious amount of heat over the 100F with very low umidity, during their flushes, while the plant were relatively small. I don't know if this may have made the thing worse. Anyhow they aren't recovering right now while the daily max doesn't go over 77F.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MangoFang on September 05, 2012, 07:05:02 PM
Hi Pan - I'm no expert in this, but the first picture could have some mineral dificiency  - though it doesn't look too bad to me, but the second one simply looks like the lighter color of a new growth flush - which then darkens with age....

Let's see what some other people say....

Gary
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: amaqeq on September 05, 2012, 07:38:35 PM
iron and to lesser extent manganese and zinc can cause almost similar symptoms of yellowing ( chlorosis ) that affects new growth first
with iron chlorosis the veins should look bit darker than the rest of the leaf
sometime over watering and damage to the roots can cause that look
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 06, 2012, 12:40:33 AM
Pan,
The first picture appears to show deficiency of Sulfur.

The second shows deficiency of Zinc.

Give them both some wettable sulfur and some Zinc sulfate.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on September 06, 2012, 10:48:26 AM
Good job, Har. You're a plant doctor :-).

Pan,
The first picture appears to show deficiency of Sulfur.

The second shows deficiency of Zinc.

Give them both some wettable sulfur and some Zinc sulfate.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Pancrazio on September 06, 2012, 03:41:52 PM
Thank you guys for your quick and useful answers.
I mixed today some wettable suphur to the water i used for irrigation, and i hope to see some sign of recovery soon.
Zinc sulphur is pretty hard to find! But i'll find that somewhere.
Honestly, i really should look for some ineherently acidic fertilizer (i was thinking about ammonia sulphate) because, on the long run, my pot become filled with carbonates.
Usually this isn't an issue on hardier plants because the winter rain "wash away" the excess of carbonates, but mangos during winter stay under cover, so basically they receve carbonates all year long.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: anaxel on September 08, 2012, 08:49:48 AM
I have a problem on the lower leaves of the tree, it becomes yellow with white dots, the tree grows and seem healthy, she made ​​flowers in July and now with more flowers. :-[
where is the problem leaves?

j'ai un problème sur les feuilles du bas de l'arbre,elle devienne jaune avec des points blancs,l'arbre grandit et parais bonne santé ,elle à fait des fleures  en juillet  et maintenant avec beaucoup plus fleuri.
où est le problème des feuilles? :-[


(http://s10.postimage.org/kcy20pi91/P1200363.jpg) (http://postimage.org/image/kcy20pi91/)
(http://s13.postimage.org/bdzjiak5f/P1200364.jpg) (http://postimage.org/image/bdzjiak5f/)
(http://s13.postimage.org/dvfw3atfn/P1200366.jpg) (http://postimage.org/image/dvfw3atfn/)
(http://s17.postimage.org/j07en1t7v/P1200368.jpg) (http://postimage.org/image/j07en1t7v/)                      (http://s12.postimage.org/lo69s6cp5/P1200367.jpg) (http://postimage.org/image/lo69s6cp5/)


Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 09, 2012, 07:48:47 AM
Please check on the Underside of the leaves, with a magnifying glass.  You will probably find an infestation of mites or thrips.   If so, spray with insecticidal soap and neem oil or spray oil.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Pancrazio on September 09, 2012, 08:18:43 AM
Another question. Not a true issue because both of those damages are healing, but i fear that on the next winter i'll have to deal with it once more.
My plant overall overwintered fine. There were some exception, obviously, with some leaf edges burned, but i would have defined that kind of damage "minor".

Still on 2 plants i have experienced some bark dieback. The first one (and the most dangerous one) has been the dieback on my plant in ground. The bark died on half trunk, well below the graft point, but oddly enough on the south half of the trunk. This is important because it died where it received more sun and overall heat (keep in mind that my north side of the cover i use for my plant is well insulated, so there is really a small irradiation from that side).
The second plant is a seedling Kensignton Pride. Even this plant died on the south side of the trunk, i discovered it just in spring. As you can see, even in this case, the damage is very low on the trunk.
Now, i'm clueless. Since this damage showed just after winter i would assume that it must have been cold damage but:
1)It is suspect that on both plant it showed on the south side of the trunk. This is tipical of scorches.
2)The Kensington Pride plant has been inside my home during the coldest day of the winter, so id didn't experienced all the cold the other plant experienced.
3)I have never heard from anyone of you about scorches on you mangos. But indeed, most mangos don't get the dark environment my plants get.
4)I need to understand if it has been cold damage or a scorch because they have differnt ways to be prevented.
5)The leaf damage of my plant has been, as i said, very minima. I don't know if bark should be affected by some frezzing weater unable to damage the leaves.
So, what do you think?
Can a mango bark be so badly scorched after a winter in a dark envoriment? And if it isn't scorch, what is it? Something biological maybe?

In-ground plant:
(http://i.imgur.com/b73lT.jpg?1)

Kensington Pride:
(http://i.imgur.com/cra7Q.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mr. Clean on September 09, 2012, 09:16:58 AM
Another question. Not a true issue because both of those damages are healing, but i fear that on the next winter i'll have to deal with it once more.
My plant overall overwintered fine. There were some exception, obviously, with some leaf edges burned, but i would have defined that kind of damage "minor".

Still on 2 plants i have experienced some bark dieback. The first one (and the most dangerous one) has been the dieback on my plant in ground. The bark died on half trunk, well below the graft point, but oddly enough on the south half of the trunk. This is important because it died where it received more sun and overall heat (keep in mind that my north side of the cover i use for my plant is well insulated, so there is really a small irradiation from that side).
The second plant is a seedling Kensignton Pride. Even this plant died on the south side of the trunk, i discovered it just in spring. As you can see, even in this case, the damage is very low on the trunk.
Now, i'm clueless. Since this damage showed just after winter i would assume that it must have been cold damage but:
1)It is suspect that on both plant it showed on the south side of the trunk. This is tipical of scorches.
2)The Kensington Pride plant has been inside my home during the coldest day of the winter, so id didn't experienced all the cold the other plant experienced.
3)I have never heard from anyone of you about scorches on you mangos. But indeed, most mangos don't get the dark environment my plants get.
4)I need to understand if it has been cold damage or a scorch because they have differnt ways to be prevented.
5)The leaf damage of my plant has been, as i said, very minima. I don't know if bark should be affected by some frezzing weater unable to damage the leaves.
So, what do you think?
Can a mango bark be so badly scorched after a winter in a dark envoriment? And if it isn't scorch, what is it? Something biological maybe?

In-ground plant:
(http://i.imgur.com/b73lT.jpg?1)

Kensington Pride:
(http://i.imgur.com/cra7Q.jpg)

The second picture looks like potential sunburn, which you would treat with painting the trunk with diluted white latex paint to reflect some of the heat.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: anaxel on September 09, 2012, 10:57:26 AM
I looked at the leaves under the magnifying glass, I found that there were small red spider (mite) on the leaves, are small red spots on the photos.

(http://s17.postimage.org/klsp25wyj/P1200392.jpg) (http://postimage.org/image/klsp25wyj/)
(http://s16.postimage.org/bi091iez5/P1200391.jpg) (http://postimage.org/image/bi091iez5/)
(http://s16.postimage.org/uuvqlitzl/P1200390.jpg) (http://postimage.org/image/uuvqlitzl/)
(http://s18.postimage.org/5ih3bnoqt/P1200387.jpg) (http://postimage.org/image/5ih3bnoqt/)
sorry for the blurry pictures. :-[
I immediately treated with black soap (olive).

thank you guanabanus. ;) 8)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 09, 2012, 10:40:06 PM
Pan,

I am not sure about your mango trunks, but consider that sun on frost worsens the damage.

Also, where there is more moisture in the air, frost crystals form, and penetrate, at a warmer temperature than drier air.  At an educational woodsy garden that I used to manage, in 2010 we had light frost damage, all of it precisely in the places that I had considered most protected, downwind from ponds and waterfalls.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: amaqeq on September 10, 2012, 12:24:12 AM
Pancrazio
about the second photo in your first question
the mango with bleached top
there are different approaches to deal with trace element deficiency
and it depends also on what scale are you dealing with
orchard owners will have 25kg bags of metal sulfates like Manganese Zinc Copper
Magnesium and Iron, mostly sulfate salts are cheep in big quantities has good solubility and are less hygroscopic they are distributed individually to correct specific deficiency
you can buy them at agriculture warehouses at 25kg bags each (mostly no less)
in chemical supply stores per kilo
or ask in nearby nursery or local farmer

just for zinc there is even simpler method:
buy an aa zinc charcoal battery, open it take out the zinc dust and wash it
or scrape bit of zinc from galvanized steel upper surface
mix the salvaged Zinc with kitchen vinegar and let stand for few days
after concentrating the solution it start to crystallize
those crystals of zinc acetate are great zinc source for plants
 
the approach of dealing with every deficiency individually might not suit everyone
sometime such deficiency is only the first sign of brother soil or root problem
in other times an deficiency can mimic other one or be the first one in a row

if you are only growing few trees and few of them are in pots
you can be better of buying an mix of Chelated micro elements
the good ones are suited for very broad pH level, possible to use as foliar spray
or drench and compatible with most other fertilizers
in Italy there are few mixes from at least two different companies that i know of:
AkzoNobel Micronutrients (AkzoNobel have few types)
labin micromix (labin also have few types)
each mix has slightly different percentage of trace elements
and might use different chelating agent, in any case it is safe way to solve and prevent
problems of micro elements shortages, acute ones and and the ones who are just cooking
mostly those mixes are also soled in 1kg dry packages
or as a solution at 1, 5, 10,liters packages
the dry powder if kept close and dry has very good shelf life

regarding ammonium sulphate, sometime potted plants are not so happy with ammoniacal form of nitrate that is of course it you are referring to potted plants

that all subject can be debated by different experience and approach
mine is just one of them

 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Pancrazio on September 11, 2012, 07:55:42 AM
Guys, thank you very much for all the attention you gave to my messages!

@Guanabanus: It's very hard to tell what happened, i know. Simply because under my cover the plant has been exposed to every single hazardous condition that can happen! But with a minium outside of the cover of 19F, i can't avoid to put it on. Yet, the thermometer i putted inside the cover didn't show any temperature under 37F so i would exclude the ice crystals, even more because, obviuosly, inside the air was stagnant, so no wind chill for me. But indeed under the covere there were a lot of water, so humidity was high.

@amaqeq: Thank you for your long and exhaustive explanation. Indeed i have few tropical plants, wich i grow basically for fun. I own also several temperate fruit plants in ground but they don't give me any nutritional problem, because luckly i have a very good soil in my orchard. Probably 25kg of sulfate would last for a couple of decades here. :) So i have got to find someone wich sell them in little amounts. I think, if i'm not going to solve this with any method involving sulphates, i'll switch to chelated. So far i have used only EDTA chelated of iron (for lemons and azaleas), but i don't have any chelated at hand right now, even if i know that is very easy to find in any nursery here.
Regarding zinc, anyhow, i have some iron wire treated with zinc to avoid rust. Can i use it to extract zinc with vinegar?? I haven't AA batteries, i use only rechargeable ones.
I will look for the companies you mentioned, having at hand some chelated can be useful. Thank you!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 11, 2012, 09:34:57 AM
Amaqeq,
Very good points.

Another manufacturer of excellent chelated micronutrients, in Italy, is BREXIL.  I buy some of their products here in Florida.  I agree that these would work well for Pan.

In northern Florida and southern Georgia, Zinc sulfate is easy to find, because every pecan grower needs it.  But here in south Florida one usually has to order it on the internet.


Pancrazio,

In calm conditions with high humidity, 37-degrees Fahrenheit is the highest temperature at which frost crystals can form.  Frost is less likely to form when there is breeze or wind.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mr. Clean on September 16, 2012, 12:01:17 PM
DELETED
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 16, 2012, 12:13:10 PM
Probably Powdery Mildew damage during the prolonged high humidity. 

On the other hand, it also looks like damage from excessive fertilizer salts.  If fertilizer is put down when the ground is soggy, it can all dissolve at once.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on September 16, 2012, 01:33:35 PM
Wow, Har, you're the boss. You should setup an internet tree consulting biz :-).

Probably Powdery Mildew damage during the prolonged high humidity. 

On the other hand, it also looks like damage from excessive fertilizer salts.  If fertilizer is put down when the ground is soggy, it can all dissolve at once.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mr. Clean on September 16, 2012, 08:25:03 PM
Thanks Har and Jeff.  So what is the recommendation?  Lots of water?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 16, 2012, 09:03:13 PM
I assume you already are getting enough water in this weather. 

If it was fertilizer damage, and you don't see more damage developing, you can just hope that a brief spike of excess happened and is already past.  If it is getting worse, you can apply Calcium sulfate or even lime to calm down some of the salts.  You can also spray or drench with silicates or humates.

Safer Soap, spray oils, and many other things are useful against Powdery Mildew.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on September 17, 2012, 08:03:02 AM
I assume you already are getting enough water in this weather. 

If it was fertilizer damage, and you don't see more damage developing, you can just hope that a brief spike of excess happened and is already past.  If it is getting worse, you can apply Calcium sulfate or even lime to calm down some of the salts.  You can also spray or drench with silicates or humates.

Safer Soap, spray oils, and many other things are useful against Powdery Mildew.
Be careful spraying oils with clear skies and full, hot sun.  Sulfur fungicide works well for powdery mildew.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: anaxel on September 25, 2012, 04:49:13 AM
hi friends,
I have a big problem with my langra mango tree, rootstock is very good, the problem is the graft.
anyone can view photos, help me urgently and tell me what to do.
thank you very much.

(http://s15.postimage.org/6ts2bq013/P1200554.jpg) (http://postimage.org/image/6ts2bq013/)
(http://s7.postimage.org/77n71l9x3/P1200544.jpg) (http://postimage.org/image/77n71l9x3/)
(http://s9.postimage.org/r1rs1brnv/P1200556.jpg) (http://postimage.org/image/r1rs1brnv/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 25, 2012, 08:40:17 AM
It looks like Powdery Mildew damage, possibly combined with Thrips damage.  Have you looked at the underside of the leaves with a magnifier?

Also, if the rootstock has no leaves and no seed left to feed it, the roots may be starving.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: anaxel on September 25, 2012, 09:21:36 AM
thank you for the answer, ;)
photos were taken yesterday, today, there are over leaf on mango tree, they are all brown and dry.
the rootstock has no leaf, it is naked, but green, the problem is at the top of the mango tree.
I looked at the underside of the leaf with a magnifying glass, there was nothing.
 :'( :-[

( I should let it grow a few leaves of rootstock, to promote the growth of the graft and root or not? )
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: murahilin on September 25, 2012, 11:29:05 AM
thank you for the answer, ;)
photos were taken yesterday, today, there are over leaf on mango tree, they are all brown and dry.
the rootstock has no leaf, it is naked, but green, the problem is at the top of the mango tree.
I looked at the underside of the leaf with a magnifying glass, there was nothing.
 :'( :-[

( I should let it grow a few leaves of rootstock, to promote the growth of the graft and root or not? )

You probably should not have cut off the top of the roostock until the growth from the graft had hardened.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: anaxel on September 25, 2012, 12:39:35 PM
hi murahilin, ;)
to the top of the rootstock, I did not cut., he broke with the wind and I arranged with my chisel.
my luck is there still had an eye on the graft.
since it rot in the graft. :-[
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: anaxel on September 26, 2012, 10:32:42 AM
I was recommended to remove the soil and the roots dry, replace the present earth by peat.
after cutting the leaves 3/4 and put a transparent bag on top of the mango tree + light for new growth, appears.
What do you think? :-[
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on September 26, 2012, 10:45:56 AM
I was recommended to remove the soil and the roots dry, replace the present earth by peat.
after cutting the leaves 3/4 and put a transparent bag on top of the mango tree + light for new growth, appears.
What do you think? :-[
Not sure why you would have been advised to bare root it...I highly doubt that bare rooting it will help any (and actually may take even more away from a struggling/dying scion.  Cutting what leaves back by 3/4?

Also, unless you were to actually cut the rootstock back (which of course would mean cutting BELOW the graft), I doubt your rootstock will push any leaves at this point.  So with the graft struggling/dying and the rootstock possibly doing the same, you may be fighting an ultimate losing battle.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: anaxel on September 26, 2012, 11:13:46 AM
hi bsbullie,
ok,
thank you very much for your help everyone.
bye bye my langra mango tree  :'( :'( :'( :'(.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: samuelforest on September 27, 2012, 06:26:43 PM
Hi everybody! I have a little problem with my mango tree. It has some dark spots on the leaves, but this really located nothing serious. No leaves fell also. I just don't know what it is and I would like your help to remove those.

Here's some pictures:

(http://i1087.photobucket.com/albums/j469/Samuelforest/DSC04413.jpg)

(http://i1087.photobucket.com/albums/j469/Samuelforest/DSC04414.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: samuelforest on September 28, 2012, 07:13:44 AM
Nobody?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mr. Clean on September 28, 2012, 07:30:34 AM
Nobody?

You've given it less than a day for people to respond.  I'm not an expert, but I would guess anthracnose and would spray with copper sulfate solution.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: samuelforest on September 28, 2012, 07:51:33 AM
I was seeing the post getting down on list, so I thought nobody saw it. Thanks for the input! I'll get some copper sulfate.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on September 28, 2012, 08:15:07 AM
While spraying copper fungicide won't hurt I am pretty sure that is not anthracnose.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: samuelforest on September 28, 2012, 06:22:22 PM
What do you think it is Rob? I watched some pictures and it doesn't not look like anthracnose, I have no spots on the fruits and flowers look healthy.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: CoPlantNut on September 28, 2012, 06:50:40 PM
What do you think it is Rob? I watched some pictures and it doesn't not look like anthracnose, I have no spots on the fruits and flowers look healthy.

I'm not a mango expert at all, but I bet those spots are caused by the dramatic change in conditions from when the leaf had initially hardened-- specifically in your case, I'm guessing it is the reduced humidity, new artificial lighting conditions, and possibly warmer temperatures (at least more consistently warm, day and night) the plant is now getting in your indoor plant room.  I've seen it on mango seedlings I've grown before when I move them outside (I have high humidity inside, low outside), but I see it all the time on other plants like plumeria, carambola, acerola and others.  I don't think it is anything to worry about; the leaf may not look perfect but it is still working to give the plant energy.  I really doubt it is anything fungal in your indoor setup, unless you're keeping the humidity high using ultrasonic humidifiers- and my experience has been that mold will grow on your walls before it does on the plants in that situation.

   Kevin
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: samuelforest on September 28, 2012, 09:49:43 PM
Thanks Kevin, it release pressure on me :). I have only saw it on my Carrie, not pickering...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 29, 2012, 08:13:28 AM
As the spots mostly are not bordered by veins, I don't think it is bacterial leaf spot.  I'm not sure what.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: samuelforest on September 29, 2012, 09:08:07 AM
So, I shouldn't worry? Only if the spots begin to affect all the leaves?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: samuelforest on September 30, 2012, 10:37:13 AM
It started to get worse! That leaf I showed you is now completely affected...Other leaves start to be inffected also. What should I do?
Please Help!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on September 30, 2012, 10:44:10 AM
I am not sure what it is at this point either.  What are you feeding it and how often?  If the leaves have gotten worse, please post new pictures as that MIGHT help.

Are the plants now indoors?  If they are indoors now, did this first appear while outdoors or not till you moved them indoors?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: samuelforest on September 30, 2012, 01:52:17 PM
The tree is indoor and I fertilized it with half the strenght of miracle grow each week.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on September 30, 2012, 01:54:34 PM
The tree is indoor and I fertilized it with half the strenght of miracle grow each week.
What kind of miracle grow (liquid/granular), how did yo apply it?  Each week, for how many weeks in a row?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: CoPlantNut on September 30, 2012, 02:44:55 PM
The tree is indoor and I fertilized it with half the strenght of miracle grow each week.

How close are the leaves to your 1000W light?  Any idea what the humidity is in your plant room?

One suggestion I would have is to get a cheap, lightweight strip thermometer (they sell them at pet shops for use on the outside of fish tanks, usually $5 or less) that you can lay on one of the leaves to see how hot it is getting under your light.  The leaves may be getting hotter than the ambient temperature in your plant room, and while your pictures aren't typical of leaf burn from way too much heat, it could be that they are getting a little too warm.  A cheap strip thermometer will tell you if this is happening, and if it is, you can either move the plants further from the light or get a small oscillating fan to help move air around and cool the leaves off.

   Kevin
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: samuelforest on September 30, 2012, 07:26:04 PM
Quote
What kind of miracle grow (liquid/granular), how did yo apply it?  Each week, for how many weeks in a row?

I use the all purpose fertilizer. I used it maybye for 4 weeks now, but it doesn't look like fertilizer burn. My Pickering gets the same water with the same concentration of fertilizer and don't have the symptoms of the Carrie.

Quote
How close are the leaves to your 1000W light?  Any idea what the humidity is in your plant room?

The light 26 inches away from the plants and the humidity ranges between 40-50%.

Quote
One suggestion I would have is to get a cheap, lightweight strip thermometer (they sell them at pet shops for use on the outside of fish tanks, usually $5 or less) that you can lay on one of the leaves to see how hot it is getting under your light.  The leaves may be getting hotter than the ambient temperature in your plant room, and while your pictures aren't typical of leaf burn from way too much heat, it could be that they are getting a little too warm.  A cheap strip thermometer will tell you if this is happening, and if it is, you can either move the plants further from the light or get a small oscillating fan to help move air around and cool the leaves off.

What is the perfect temperature close to the leaves? I have already 2 fans. Should I get a exhaust fan to cool the room down?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: CoPlantNut on October 01, 2012, 12:43:48 PM
Quote
What kind of miracle grow (liquid/granular), how did yo apply it?  Each week, for how many weeks in a row?

I use the all purpose fertilizer. I used it maybye for 4 weeks now, but it doesn't look like fertilizer burn. My Pickering gets the same water with the same concentration of fertilizer and don't have the symptoms of the Carrie.

Quote
How close are the leaves to your 1000W light?  Any idea what the humidity is in your plant room?

The light 26 inches away from the plants and the humidity ranges between 40-50%.

Quote
One suggestion I would have is to get a cheap, lightweight strip thermometer (they sell them at pet shops for use on the outside of fish tanks, usually $5 or less) that you can lay on one of the leaves to see how hot it is getting under your light.  The leaves may be getting hotter than the ambient temperature in your plant room, and while your pictures aren't typical of leaf burn from way too much heat, it could be that they are getting a little too warm.  A cheap strip thermometer will tell you if this is happening, and if it is, you can either move the plants further from the light or get a small oscillating fan to help move air around and cool the leaves off.

What is the perfect temperature close to the leaves? I have already 2 fans. Should I get a exhaust fan to cool the room down?

26 inches from a non-moving, un-shielded 1000W light might be a little close, but the pictures you've posted don't really look like heat stress, and every setup is different...  Having the fans running in your plant room is good, and 40-50% humidity is pretty decent too-- both should help to keep the leaves from getting too hot.  If the Pickering is a similar distance from the light and isn't showing these issues, I would think it is not heat stress...  But in the absence of any other suggestions you might try moving the affected plant another 20-30cm away from the light and see if the problem stops.

I don't know what a maximum temperature for the leaves is; in my plant room the air temperature is 86F / 30C but thermometers mounted at the highest leaf level read 95F / 35C and I don't have issues with burning (unless I just sprayed the plants down with oil); I would guess 100F / 38C or above might start to be a problem if it is kept that warm all day long.  I wouldn't worry about an exhaust fan unless air temperatures get above 90F / 32C on a regular basis.

   Kevin
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: CoPlantNut on October 01, 2012, 12:52:18 PM
One more thing I should add: if it is only the top-most leaves closest to the light that are showing these issues, then it could be heat / light stress and the stuff I said earlier might apply.  If it is only showing up on lower leaves then it probably isn't heat stress.  From the pictures it isn't clear which leaves are affected.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: samuelforest on October 01, 2012, 05:20:41 PM
They are leaves that started to burn, the one I showed everybody. The back turned crispy brown and top also. I guess it is due to excessive heat.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: CoPlantNut on October 01, 2012, 06:17:05 PM
They are leaves that started to burn, the one I showed everybody. The back turned crispy brown and top also. I guess it is due to excessive heat.

If that's the case, moving the plant further from the light, or putting the light on a (constantly moving) light mover are the only fixes.  Cooling the air in your room will help some, but it won't prevent burns caused by infrared radiation coming from the bulb.  Obviously, moving the plant away from the bulb is the cheapest option...

   Kevin
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: samuelforest on October 01, 2012, 07:14:00 PM
What I don't understand is that it doesn't affect the top leaves? I guess it is not due to the light to be too close. The temperature went up to 36C and I guess it cooked the leaves. What should I do to reduce heat?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on October 01, 2012, 07:18:49 PM
So what parts f the plant were affected?  Top leaves are fine and lower leaves look bad?  What about the other plants on the room, any problems on those?

Your room was close to 100 degrees, for what duration?  How long do you run the lights?  How big is the room?

I have had plants in a room with both a 1000 MH and 1000W HPS with no burning.

Please post more. new pictures.  I do not think it has anything to do with the light.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: samuelforest on October 01, 2012, 08:22:50 PM
Some at the bottom and some also on top. Not a lot of leaves are affected, maybye 5-7 leaves. No problem with the other plants in the grow room. Only with the lychee today which lost 2 leaves due to the hot temperatures, but nothing like the mango tree, which has leaves with black spots that turns crips brown. I run the lights for 12 hours a day. The room is 6'8'' by 8' and the top touches about 10'.

How far your lights were?

I'll post pictures tomorrow. I opened my grow room and opened my garage door about 2'', so it should cool down.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: samuelforest on October 02, 2012, 05:23:39 PM
Here's some pictures of a leaf.

(http://i1087.photobucket.com/albums/j469/Samuelforest/DSC04415.jpg)
(http://i1087.photobucket.com/albums/j469/Samuelforest/DSC04416.jpg)

It is burned, but I can really see some little black spot. They are really small. Some top leaves also look super healthy.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 03, 2012, 12:25:11 AM
It does look like sunburn to me.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: TnTrobbie on October 07, 2012, 05:32:43 PM
(http://imageshack.us/a/img825/9130/56227986.jpg) (http://imageshack.us/photo/my-images/825/56227986.jpg/)
(http://imageshack.us/a/img840/9738/23947808.jpg) (http://imageshack.us/photo/my-images/840/23947808.jpg/)
Nutritional or *gulp* pest ?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropicalgrower89 on October 07, 2012, 05:41:13 PM
(http://imageshack.us/a/img825/9130/56227986.jpg) (http://imageshack.us/photo/my-images/825/56227986.jpg/)
(http://imageshack.us/a/img840/9738/23947808.jpg) (http://imageshack.us/photo/my-images/840/23947808.jpg/)
Nutritional or *gulp* pest ?

Looks like the leaves are all stained-up by sprinkler well water.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: TnTrobbie on October 07, 2012, 05:46:19 PM
Yeah. The trunk that faces the sprinkler has the red iron well water stains. I'm more concerned with the wrinkling, curling, and "soft body" light green look of these young leaves. Did a soil acidifier chelate drench.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MarinFla on October 14, 2012, 12:45:27 PM
WHAT Do I need to do differently???  I have been dealing with this stuff on and off  for a year now. I thought I just about had it beat and now it seems to be spreading to other trees. I guess I need to be more aggressive. It has up until now only been on my mango trees. Now I just found it just starting on my Jackfruit and Abui. Even after aggressively spraying with Copper, Dawn dish soap and Foliage Pro... it dried up and flaked some on my Carrie tree but it never completely went away and now it seems to be spreading.

Pictures below....need suggestions!

Glenn
(http://s14.postimage.org/qitg1zi2l/2012_10_14_11_59_49.jpg) (http://postimage.org/image/qitg1zi2l/)

Carrie
(http://s12.postimage.org/cfyngng1l/2012_10_14_11_58_50.jpg) (http://postimage.org/image/cfyngng1l/)

Keitt
(http://s13.postimage.org/tyf6g5bw3/2012_10_14_11_58_14.jpg) (http://postimage.org/image/tyf6g5bw3/)


Jackfruit
(http://s14.postimage.org/3u8ug5q2l/2012_10_14_12_00_03.jpg) (http://postimage.org/image/3u8ug5q2l/)

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on October 14, 2012, 03:39:55 PM
It is tough with some mangoes, especially.  The tree will out grow it, but it can spread and hinder the overall health of the tree.  I have used both Copper and Neem Oil with some success.  What works best is a high pressure hose spray.  I treat with neem or copper and then it the young trees with the hose.  The larger trees, I just let be.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: zands on October 14, 2012, 04:22:46 PM
This has to be ye old common black mold you see on roofs etc. I have some on a banana and it showered down this black gunk onto other plants. I will try to blast it off with water as Harry did
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on October 14, 2012, 04:39:42 PM
This has to be ye old common black mold you see on roofs etc. I have some on a banana and it showered down this black gunk onto other plants. I will try to blast it off with water as Harry did
Do you have any evidence that the mold that "shows up" on roofs effects plants?

Marin - are there any pests (scale, aphids, mealys, etc.) around?  Looks more like sooty mold to me.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: murahilin on October 14, 2012, 05:03:42 PM
Do you have any evidence that the mold that "shows up" on roofs effects plants?

Marin - are there any pests (scale, aphids, mealys, etc.) around?  Looks more like sooty mold to me.

Yup, definitely looks like sooty mold to me.

Here is some info on sooty mold: http://baker.ifas.ufl.edu/Horticulture/documents/BlackSootyMoldonLandscapePlants.pdf (http://baker.ifas.ufl.edu/Horticulture/documents/BlackSootyMoldonLandscapePlants.pdf)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on October 14, 2012, 05:08:05 PM
It's coming from one one of t00 sources: 0) sooty mold from scale / aphids on the plants themselves, 1) a coconut tree, banana, etc above all your potted plants which has an infestation of evil spiraling white fly.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: TnTrobbie on October 14, 2012, 05:46:04 PM
Looks like sooty mold. I had that on a couple of lower branches of my NDM. It followed a scale infestation and it got so thick that some peices started to molt off the leaf. 3 apps of Ortho Volck oil (Lowes) did the trick. Scales died, sooty mold left.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MarinFla on October 14, 2012, 06:52:58 PM
It's coming from one one of t00 sources: 0) sooty mold from scale / aphids on the plants themselves, 1) a coconut tree, banana, etc above all your potted plants which has an infestation of evil spiraling white fly.

I inspected all the trees when I took these pics and I found no scale at all, no mealy bugs anywhere, no aphids except for last week on the one tree that has no 'sooty mold' ---> last week my barbados cherry had yellow aphids and one spray of malathion and it was all cleared up. You may be onto something with the spiraling white fly as there are ficus hedges all around the perimeter of my yard and there are coconut palms hovering over top mingled along the property lines  ......The affected trees are pushing lots of new growth right now but it did stunt the Carrie for a whole season as it just started flushing in the last couple of weeks. I am not sure what to do at this point..... should I just douse everything with ______?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on October 14, 2012, 09:06:12 PM
Spiraling whitefly sucks badly. They poop out like 10x more sooty mold than scale. I have a coconut palm that bathes my car and driveway in black gunk :-(.

It's coming from one one of t00 sources: 0) sooty mold from scale / aphids on the plants themselves, 1) a coconut tree, banana, etc above all your potted plants which has an infestation of evil spiraling white fly.

I inspected all the trees when I took these pics and I found no scale at all, no mealy bugs anywhere, no aphids except for last week on the one tree that has no 'sooty mold' ---> last week my barbados cherry had yellow aphids and one spray of malathion and it was all cleared up. You may be onto something with the spiraling white fly as there are ficus hedges all around the perimeter of my yard and there are coconut palms hovering over top mingled along the property lines  ......The affected trees are pushing lots of new growth right now but it did stunt the Carrie for a whole season as it just started flushing in the last couple of weeks. I am not sure what to do at this point..... should I just douse everything with ______?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on October 14, 2012, 09:17:11 PM
It's coming from one one of t00 sources: 0) sooty mold from scale / aphids on the plants themselves, 1) a coconut tree, banana, etc above all your potted plants which has an infestation of evil spiraling white fly.

I inspected all the trees when I took these pics and I found no scale at all, no mealy bugs anywhere, no aphids except for last week on the one tree that has no 'sooty mold' ---> last week my barbados cherry had yellow aphids and one spray of malathion and it was all cleared up. You may be onto something with the spiraling white fly as there are ficus hedges all around the perimeter of my yard and there are coconut palms hovering over top mingled along the property lines  ......The affected trees are pushing lots of new growth right now but it did stunt the Carrie for a whole season as it just started flushing in the last couple of weeks. I am not sure what to do at this point..... should I just douse everything with ______?
The ficus whitefly is NOT the Spiraling Whitefly.  Look at the coconut as well as any bananas, birds of paradise, gumbi limbo and many other palm species the the spiraling whitefly affect (closely check all of your mangoes as the spiraling whitefly WILL make a mango tree their home).  The evidence of the spiraling whitefly is easily seen.  The bad thing if it is there is to rid the area of it can be a battle and expensive.  While I know some will disagree (good luck ridding them with washing/soaps/oils/Sevin if they are established), the chemicals to truly treat for spiraling whitefly are expensive and potent.  You will find some companies using commercial strength Imidacloprid (not Bayer Advanced but the real deal) but there is a lot of concern that that is not that effective.  The most effective seems to Safari or its generic equivalent.  Another problem is that if you only use the washing method and or soaps/oils and the infestation is beyond your property, you will not be ridding of them and they will most likely return.

You can check for the ficus whitefly but it will not be your source of the sooty mold.  If the ficus does have the whitefly and it is not treated correctly, it is a goner.

ficus whitefly  http://trec.ifas.ufl.edu/mannion/pdfs/Ficus%20Whitefly%20%28Feb2010%29%20Fact%20Sheet.pdf (http://trec.ifas.ufl.edu/mannion/pdfs/Ficus%20Whitefly%20%28Feb2010%29%20Fact%20Sheet.pdf)

spiraling whitefly  http://trec.ifas.ufl.edu/mannion/pdfs/Rugose%20Spiraling%20Whitefly%20Nov2011.pdf (http://trec.ifas.ufl.edu/mannion/pdfs/Rugose%20Spiraling%20Whitefly%20Nov2011.pdf)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MarinFla on October 14, 2012, 09:22:13 PM
Spiraling whitefly sucks badly. They poop out like 10x more sooty mold than scale. I have a coconut palm that bathes my car and driveway in black gunk :-(.

It's coming from one one of t00 sources: 0) sooty mold from scale / aphids on the plants themselves, 1) a coconut tree, banana, etc above all your potted plants which has an infestation of evil spiraling white fly.

I inspected all the trees when I took these pics and I found no scale at all, no mealy bugs anywhere, no aphids except for last week on the one tree that has no 'sooty mold' ---> last week my barbados cherry had yellow aphids and one spray of malathion and it was all cleared up. You may be onto something with the spiraling white fly as there are ficus hedges all around the perimeter of my yard and there are coconut palms hovering over top mingled along the property lines  ......The affected trees are pushing lots of new growth right now but it did stunt the Carrie for a whole season as it just started flushing in the last couple of weeks. I am not sure what to do at this point..... should I just douse everything with ______?

Jeff,   Any heavy duty spray treatment I could hit it with? I have worked so hard this last 6 months to get everything healthy and lush that this is doubly  pissing me off!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: zands on October 14, 2012, 09:27:38 PM
@ bsbullie

The best way to get mold off roofs is not blasting each year via pressure cleaning your concrete tiles. Far better is the peroxide compound found in oxy-clean. You can find this powder on ebay and the internet. It amounts to being a powder version of H2O2. Prepare it right and use a one gallon garden sprayer on your roof problem. Let sit for hours or a day then rinse off with a garden hose. I have done this but with copper sulfate once and pool cleaner grade bleach another time. The better method is with the oxy-clean equivalent and there are reasons why.

Unless a roof is very neglected you never see such ugly black buildup you can find on plants, with me mostly bananas. So roof mold is not extensive enough to spread out and foul up plant leaves. My opinion is with our warm wet climate (SE Florida) there is always mold in the air looking for something to zero in on and build infestation on. This is how you can get an opportunistic black mold build up on your plants in one part of your yard
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MarinFla on October 14, 2012, 09:29:30 PM
It's coming from one one of t00 sources: 0) sooty mold from scale / aphids on the plants themselves, 1) a coconut tree, banana, etc above all your potted plants which has an infestation of evil spiraling white fly.

I inspected all the trees when I took these pics and I found no scale at all, no mealy bugs anywhere, no aphids except for last week on the one tree that has no 'sooty mold' ---> last week my barbados cherry had yellow aphids and one spray of malathion and it was all cleared up. You may be onto something with the spiraling white fly as there are ficus hedges all around the perimeter of my yard and there are coconut palms hovering over top mingled along the property lines  ......The affected trees are pushing lots of new growth right now but it did stunt the Carrie for a whole season as it just started flushing in the last couple of weeks. I am not sure what to do at this point..... should I just douse everything with ______?
The ficus whitefly is NOT the Spiraling Whitefly.  Look at the coconut as well as any bananas, birds of paradise, gumbi limbo and many other palm species the the spiraling whitefly affect (closely check all of your mangoes as the spiraling whitefly WILL make a mango tree their home).  The evidence of the spiraling whitefly is easily seen.  The bad thing if it is there is to rid the area of it can be a battle and expensive.  While I know some will disagree (good luck ridding them with washing/soaps/oils/Sevin if they are established), the chemicals to truly treat for spiraling whitefly are expensive and potent.  You will find some companies using commercial strength Imidacloprid (not Bayer Advanced but the real deal) but there is a lot of concern that that is not that effective.  The most effective seems to Safari or its generic equivalent.  Another problem is that if you only use the washing method and or soaps/oils and the infestation is beyond your property, you will not be ridding of them and they will most likely return.

You can check for the ficus whitefly but it will not be your source of the sooty mold.  If the ficus does have the whitefly and it is not treated correctly, it is a goner.

ficus whitefly  http://trec.ifas.ufl.edu/mannion/pdfs/Ficus%20Whitefly%20%28Feb2010%29%20Fact%20Sheet.pdf (http://trec.ifas.ufl.edu/mannion/pdfs/Ficus%20Whitefly%20%28Feb2010%29%20Fact%20Sheet.pdf)

spiraling whitefly  http://trec.ifas.ufl.edu/mannion/pdfs/Rugose%20Spiraling%20Whitefly%20Nov2011.pdf (http://trec.ifas.ufl.edu/mannion/pdfs/Rugose%20Spiraling%20Whitefly%20Nov2011.pdf)

Thanks Rob.....Now that I have checked out those links YES I have seen those spiraling white flies  :'(
I think I am going to call my pest control guy and get him to spray my entire yard for it before my mango trees get any more damage.
In the mean time...what is the most effective way to hit this sooty mold HARD???
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on October 14, 2012, 09:37:02 PM
@ bsbullie

The best way to get mold off roofs is not blasting each year via pressure cleaning your concrete tiles. Far better is the peroxide compound found in oxy-clean. You can find this powder on ebay and the internet. It amounts to being a powder version of H2O2. Prepare it right and use a one gallon garden sprayer on your roof problem. Let sit for hours or a day then rinse off with a garden hose. I have done this but with copper sulfate once and pool cleaner grade bleach another time. The better method is with the oxy-clean equivalent and there are reasons why.

Unless a roof is very neglected you never see such ugly black buildup you can find on plants, with me mostly bananas. So roof mold is not extensive enough to spread out and foul up plant leaves. My opinion is with our warm wet climate (SE Florida) there is always mold in the air looking for something to zero in on and build infestation on. This is how you can get an opportunistic black mold build up on your plants in one part of your yard
You are correct that pressure washing roofs is not the way to clean them...mostly as the person/company doing the cleaning usually damages the roof tiles, causing more money to be spent.

I am the president of my community (responsible for cleaning and maintaining roofs) and I have been on the roof-a-cide program for years now with no problems.

I still doubt that the dirt/mold that effects roofs is also a direct attacker of plants.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on October 14, 2012, 09:41:37 PM
It's coming from one one of t00 sources: 0) sooty mold from scale / aphids on the plants themselves, 1) a coconut tree, banana, etc above all your potted plants which has an infestation of evil spiraling white fly.

I inspected all the trees when I took these pics and I found no scale at all, no mealy bugs anywhere, no aphids except for last week on the one tree that has no 'sooty mold' ---> last week my barbados cherry had yellow aphids and one spray of malathion and it was all cleared up. You may be onto something with the spiraling white fly as there are ficus hedges all around the perimeter of my yard and there are coconut palms hovering over top mingled along the property lines  ......The affected trees are pushing lots of new growth right now but it did stunt the Carrie for a whole season as it just started flushing in the last couple of weeks. I am not sure what to do at this point..... should I just douse everything with ______?
The ficus whitefly is NOT the Spiraling Whitefly.  Look at the coconut as well as any bananas, birds of paradise, gumbi limbo and many other palm species the the spiraling whitefly affect (closely check all of your mangoes as the spiraling whitefly WILL make a mango tree their home).  The evidence of the spiraling whitefly is easily seen.  The bad thing if it is there is to rid the area of it can be a battle and expensive.  While I know some will disagree (good luck ridding them with washing/soaps/oils/Sevin if they are established), the chemicals to truly treat for spiraling whitefly are expensive and potent.  You will find some companies using commercial strength Imidacloprid (not Bayer Advanced but the real deal) but there is a lot of concern that that is not that effective.  The most effective seems to Safari or its generic equivalent.  Another problem is that if you only use the washing method and or soaps/oils and the infestation is beyond your property, you will not be ridding of them and they will most likely return.

You can check for the ficus whitefly but it will not be your source of the sooty mold.  If the ficus does have the whitefly and it is not treated correctly, it is a goner.

ficus whitefly  http://trec.ifas.ufl.edu/mannion/pdfs/Ficus%20Whitefly%20%28Feb2010%29%20Fact%20Sheet.pdf (http://trec.ifas.ufl.edu/mannion/pdfs/Ficus%20Whitefly%20%28Feb2010%29%20Fact%20Sheet.pdf)

spiraling whitefly  http://trec.ifas.ufl.edu/mannion/pdfs/Rugose%20Spiraling%20Whitefly%20Nov2011.pdf (http://trec.ifas.ufl.edu/mannion/pdfs/Rugose%20Spiraling%20Whitefly%20Nov2011.pdf)

Thanks Rob.....Now that I have checked out those links YES I have seen those spiraling white flies  :'(
I think I am going to call my pest control guy and get him to spray my entire yard for it before my mango trees get any more damage.
In the mean time...what is the most effective way to hit this sooty mold HARD???
Be very careful when having your pest company treat the spiraling whitefly.  Without being accusatory, many will take your money and the problem will not be gone.  I would even call around to get quote and methods/types of applications.  Just be prepared, it will not be cheap.

As f the sooty mold...get rid of the best and the sooty mold will stop.  I have posted this link before I believe but in any event, here you go...  http://baker.ifas.ufl.edu/Horticulture/documents/BlackSootyMoldonLandscapePlants.pdf (http://baker.ifas.ufl.edu/Horticulture/documents/BlackSootyMoldonLandscapePlants.pdf)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: zands on October 14, 2012, 09:50:39 PM
As f the sooty mold...get rid of the best and the sooty mold will stop.  I have posted this link before I believe but in any event, here you go...  http://baker.ifas.ufl.edu/Horticulture/documents/BlackSootyMoldonLandscapePlants.pdf (http://baker.ifas.ufl.edu/Horticulture/documents/BlackSootyMoldonLandscapePlants.pdf)

The free floating black mold that is always in the air feeds on the insect excreted honey dew (explained at your link) and grows explosively. Looks awful
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on October 14, 2012, 10:09:58 PM
As f the sooty mold...get rid of the best and the sooty mold will stop.  I have posted this link before I believe but in any event, here you go...  http://baker.ifas.ufl.edu/Horticulture/documents/BlackSootyMoldonLandscapePlants.pdf (http://baker.ifas.ufl.edu/Horticulture/documents/BlackSootyMoldonLandscapePlants.pdf)

The free floating black mold that is always in the air feeds on the insect excreted honey dew (explained at your link) and grows explosively. Looks awful
Not really sure what you are truly saying but unless you have insect infested plants that could be causing sooty mold on your roof, your roof is just plain dirty.

From the IFAS link I posted, "Sooty mold grows on a substance called “honeydew” which is excreted from certain insects such as aphids, soft scales, whiteflies and mealybugs. These insects feed on a variety of landscape plants and
can be found on the leaves and stems where they use special mouthparts to pierce plant tissues and suck
out the juices from within. During this time these insects excrete large amounts of a sticky, sugary
substance commonly called “honeydew”. The excreted honeydew coats leaves, stems, and fruit,
stimulating the growth of sooty mold."

I do not think most people have insects causing honeydew on their roofs.  The most common causes of dirty roofs are dirt, tar, acid, jet fuel, and algae.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: zands on October 14, 2012, 10:18:01 PM
@bsbulie


good luck
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on October 14, 2012, 10:35:53 PM
@bsbulie

  • there is plenty of black mold in the air here
  • it will latch onto and feed on whatever it can
  • it can be the "honey dew" on plants
  • it can be on roof tiles and shingles
  • black mold can sink roots into roof concrete tiles....somehow this is food for it
  • black mold can also infest asphalt roof shingles....blast those with a pressure cleaner and you are really asking for trouble ..... you will wear them down considerably

good luck
Not all black mold is sooty mold...there is more than one type of mold.  Yes, sooty mold can be found on non-plant surfaces but it is due to an infected plant above or in the specific area (as in an overhead tree affected by an insect causing honeydew).

As I stated, I have 320 roofs to keep clean...they are never hit with any type of pressure washer.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: zands on October 14, 2012, 11:06:28 PM

Not all black mold is sooty mold...there is more than one type of mold.  Yes, sooty mold can be found on non-plant surfaces but it is due to an infected plant above or in the specific area (as in an overhead tree affected by an insect causing honeydew).

As I stated, I have 320 roofs to keep clean...they are never hit with any type of pressure washer.

Here is what you need the H2O2 equivalent for removing black and green from roofs>>  http://compare.ebay.com/like/200618412450?var=lv&ltyp=AllFixedPriceItemTypes&var=sbar&_lwgsi=y&cbt=y (http://compare.ebay.com/like/200618412450?var=lv&ltyp=AllFixedPriceItemTypes&var=sbar&_lwgsi=y&cbt=y) but I think you already have the situation under control.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MarinFla on October 15, 2012, 04:09:09 PM
It IS DEFINITELY Spiralling White Fly and it is VERY BAD. The Coconut Palms are tall and dripping honeydew on everything. The infestation is spreading to my fruit trees. I need to do something drastic!!

I am thinking soil drench of imidacloprid (commercial strength) and then spray all the trees with malathion. Thoughts?

Someone told me I have to 'inject' the coconut palms to treat them....is this true??

Someone posted a link to commercial imidacloprid ....Murahilin? PJ ? I need it and I should have saved it :(



Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: murahilin on October 15, 2012, 04:50:17 PM
It IS DEFINITELY Spiralling White Fly and it is VERY BAD. The Coconut Palms are tall and dripping honeydew on everything. The infestation is spreading to my fruit trees. I need to do something drastic!!

I am thinking soil drench of imidacloprid (commercial strength) and then spray all the trees with malathion. Thoughts?

Someone told me I have to 'inject' the coconut palms to treat them....is this true??

Someone posted a link to commercial imidacloprid ....Murahilin? PJ ? I need it and I should have saved it :(

I am having the same problem with my coconut trees and other trees. I don't think imidacloprid is the way to go though. A strong stream of water will remove the spiraling white fly from your trees. If you add some soap to that strong stream of water it will kill the white flys while also removing them. Then after a few weeks of weekly spraying, when the population has been reduced, you could purchase some beneficial bugs that parasitize spiraling white fly eggs and then your problem could possibly be controlled. Using chemicals like imidacloprid is generally not good for the environment and you should consider trying out alternative safer treatments before you go the systemic pesticide route.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on October 15, 2012, 05:11:52 PM
As much as i do not like the chemical nuking, this is one of the times it is warranted.  I have gone through an infestation on 320 properties and there was no option but chemicals.  There is a reason why these buggers are infesting plants everywhere and not reducing by number.  If a nice soap spray with beneficial bugs were an easy and reliable fix, these guys would no be considered an epidemic.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Californiatropicals on October 15, 2012, 10:37:25 PM
Hey everyone, Thought I'd post some pics and try and get some feedback on my mango trees.

(http://i1243.photobucket.com/albums/gg545/dvaldez1286/MangotreeManila_zps4de2862b.jpg)

These two are my manila mangoes.. they've been outside the past 3 years even in winter with zero protection..  the stems have grown thick and they had a lot of good growth!

This year most of the growth seems to be from the roots.. and not on the top  of the growth.. Does anyone know why  it's doing this?  I've pruned back all the lower growth a few times this year.. but it seems to keep coming back.. anyone know why? 
(http://i1243.photobucket.com/albums/gg545/dvaldez1286/mangogrowthroots_zps6ce98458.jpg)

On the bright side.. I recently got a beautiful valencia pride mango from florida just about a month ago.. it's grown more in a month than my manila mangoes grow in a year! I have great expectations of VP here!

(http://i1243.photobucket.com/albums/gg545/dvaldez1286/valenciapridemango_zps1370aa37.jpg) This is when i got it a month ago

(http://i1243.photobucket.com/albums/gg545/dvaldez1286/MangoVPgrowth_zpsf163e6fc.jpg) this is it today..  ;D





Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on October 16, 2012, 07:36:25 AM
Your mango trees that are growing mostly from the roots are doing what almost all grafted mangoes want to do.....that is the rootstock wants to grow from itself rather than supporting the foreign grafted tree above.  If you want to maintain the variety that you purchased the tree for, you best trim off the new growth from the roots.  Otherwise, before long the root sprouts will overtake the tree and the roots will stop sending nutrients to the grafted portion of the tree.  The new tree grown from the roots will be a seedling and its own individual mango with its own characteristics.  Those characterics will likey be substantially inferior to the grafted portion that you purchased the tree for.

Edited for spelling errors...at least the one I spot so far.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MarinFla on October 16, 2012, 08:08:07 AM
It IS DEFINITELY Spiralling White Fly and it is VERY BAD. The Coconut Palms are tall and dripping honeydew on everything. The infestation is spreading to my fruit trees. I need to do something drastic!!

I am thinking soil drench of imidacloprid (commercial strength) and then spray all the trees with malathion. Thoughts?

Someone told me I have to 'inject' the coconut palms to treat them....is this true??

Someone posted a link to commercial imidacloprid ....Murahilin? PJ ? I need it and I should have saved it :(

I am having the same problem with my coconut trees and other trees. I don't think imidacloprid is the way to go though. A strong stream of water will remove the spiraling white fly from your trees. If you add some soap to that strong stream of water it will kill the white flies while also removing them. Then after a few weeks of weekly spraying, when the population has been reduced, you could purchase some beneficial bugs that parasitie spiraling white fly eggs and then your problem could possibly be controlled. Using chemicals like imidacloprid is generally not good for the environment and you should consider trying out alternative safer treatments before you go the systemic pesticide route.

The problem I have  is that the coconut palms are 35-45 ft tall so the hose spray isn't strong enough trying to reach that high. All  the hedges that are on my neighbors property are also now infested and it is too much to eradicate with natural predators. I am worried at how fast the sooty mold completely covered my mango trees and the flies have moved onto my  other healthy fruit trees to cause trouble.
I need to treat this aggressively.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on October 16, 2012, 09:50:16 AM
Not sure what happened to my post from yesterday but, here goes again in a simplified form.

I would use Safari or its generic over Imidacloprid for the spiraling whitefly.  Both Safari and commercial/professional strength  Imidacloprid are available at Howard Fertilizer on Atlantic Avenue in Delray Beach (just east of 441).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MarinFla on October 16, 2012, 03:19:56 PM
Not sure what happened to my post from yesterday but, here goes again in a simplified form.

I would use Safari or its generic over Imidacloprid for the spiraling whitefly.  Both Safari and commercial/professional strength  Imidacloprid are available at Howard Fertilizer on Atlantic Avenue in Delray Beach (just east of 441).

Thanks Rob. I am on it. I have our pest guy coming to check my house. The association may pay him to do the hedges but those coconut palms are not in the scope of his association duties. He wanted like $50 to inject each one x3 trees=$150.. For that much I can buy the stuff and treat it myself with a soil drench.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on October 16, 2012, 03:56:57 PM
The Safari will cost you over $300.  The generic will be a little cheaper.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: samuelforest on October 16, 2012, 07:32:06 PM
Hi guys :). I might be annoying, but I still have the same problem on my mango tree, but it got worse. I really don't know what to do...Should I prune it back? I would like to keep the fruits!

Here's some pictures:

This one of the leaves that are affected. It should not be sunburn since it is a the bottom. All my other trees are looking great. The mango tree who is affected is also flushing where it was pug.

(http://i1087.photobucket.com/albums/j469/Samuelforest/DSC04424.jpg)

(http://i1087.photobucket.com/albums/j469/Samuelforest/DSC04423.jpg)

It looks like it is only affected in the back. I have about 20 leaves or more like that.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on October 16, 2012, 07:34:32 PM
Samuel, what you have looks like some cold damage.  Has there been a large swing in temps or humidity for this mango? 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: samuelforest on October 16, 2012, 07:47:27 PM
Not really, it have been indoors for about a month. I think the lowest temperature it have been through was 6 degrees celsius. the humidity is also pretty low, les than 50%.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on October 16, 2012, 08:06:10 PM
6 C is about 42 F and with lowered relative humdity, could cause that kind of damage, especially if the growth was not completely hardened off and had been growing at much higher temps or relative humdity than it is experiencing now. In any case, if it gets no worse, I would not be concerned.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: samuelforest on October 16, 2012, 08:11:43 PM
You think it is caused by too much temperature variation?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on October 16, 2012, 08:14:09 PM
That's my theory. Has it encountered wide temp or humidity swings?  It wold only take one timed correctly to cuase some leaf discoloration.  Could be something else, but I am at a loss to say what else it may be.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: samuelforest on October 16, 2012, 08:18:06 PM
It could have. It might be the variation from outdoors to indoors?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Californiatropicals on October 16, 2012, 11:39:33 PM
Your mango trees that are growing mostly from the roots are doing what almost all grafted mangoes want to do.....that is the rootstock wants to grow from itself rather than supporting the foreign grafted tree above.  If you want to maintain the variety that you purchased the tree for, you best trim off the new growth from the roots.  Otherwise, before long the root sprouts will overtake the tree and the roots will stop sending nutrients to the grafted portion of the tree.  The new tree grown from the roots will be a seedling and its own individual mango with its own characteristics.  Those characterics will likey be substantially inferior to the grafted portion that you purchased the tree for.

Edited for spelling errors...at least the one I spot so far.

Thanks for your response! My concern though is this is not a grafted mango, it is a seedling Manila Mango which are polyembronic..  I wish I could figure out why it's growing from the roots.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 17, 2012, 10:11:35 PM
Samuel,

The leaf underside mis-coloring and drip-tip burning could be from spray damage.   Even soap spray can do this, at too high a concentration or staying wet with spray for too many hours.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 17, 2012, 10:20:53 PM
CaliforniaTropicals,
Did you plant a whole polyembrionic seed there?  Or did you separate out the other plants.  It could be that you have several plants in each pot, which need to be pulled out as weeds.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on October 17, 2012, 10:47:01 PM
Samuel,

The leaf underside mis-coloring and drip-tip burning could be from spray damage.   Even soap spray can do this, at too high a concentration or staying wet with spray for too many hours.
That was my initial thought...posted a page or two back...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: jc on November 03, 2012, 06:08:11 AM
My Valencia Pride, Rosigold, Mahachanok, and Lancetilla are all suffering from some sort of leaf tip "burn" (for lack of an accurate term).  All of the burn is on the second flush or older. 

All were purchased this past summer as 3 gal trees. They were planted in late August / early September.  I have low organic matter, sandy soil that drains well. Soil ph ranges from 6.5 to about 8. Since the summer rains have subsided, I water only when the soil is fairly dry. Well water has a ph of about 6.  I've fertilized once so far with excalibur's 8-3-9 w micros. I have also foliar sprayed once with Southern Ag citrus nutritional spray (no NPK). 

Is the last pic whitefly evidence?

I have a Dot, 2 Pickerings, Beverly, Ice Cream, and a BKM that don't show any symptoms yet. My avocados and carambola are happy and flushing nonstop.

Any suggestions?  Thanks.


Mahachanok
(http://s8.postimage.org/p8acxl4w1/IMAG0441.jpg) (http://postimage.org/image/p8acxl4w1/)
Rosigold
(http://s8.postimage.org/dlq8wghkx/IMAG0442.jpg) (http://postimage.org/image/dlq8wghkx/)
Rosigold
(http://s8.postimage.org/9qmutvyf5/IMAG0443.jpg) (http://postimage.org/image/9qmutvyf5/)
Lancetilla
(http://s8.postimage.org/92e0axzpd/IMAG0444.jpg) (http://postimage.org/image/92e0axzpd/)
Lancetilla
(http://s8.postimage.org/x7epsnk01/IMAG0445.jpg) (http://postimage.org/image/x7epsnk01/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: OrganicJim on November 03, 2012, 09:16:10 AM
If you do not have many trees as I do and are totally organic use hydrpgen peroxcide on things like this. I use it on U-tips in places and always have a small spray bottle to use.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 03, 2012, 10:39:02 PM
I don't recall seeing signs like that on the first 'Lancetilla' picture.  The others look as though they have been sprayed with soap or oil when the spray took too long to dry.

Has any "Weed n' Feed" been used near there?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: jc on November 04, 2012, 06:06:23 AM
I have sprayed some soap when I found some what looked like spiraling whiteflys. Otherwise, my copper has a sticker that is soapy.

No weed n feed from me, but maybe the landscaping crew.  I'll check into them.  I saw my neighbor spraying his weeds about 2 weeks ago. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: anaxel on November 10, 2012, 03:28:51 PM
Hello to everybody, :D
I have a small problem with my choc anon.
Somebody few to help me to solve this problem, I would not like to lose my mango tree. :-[ :'(
That to make? :-[


(http://s13.postimage.org/7m1aslyhv/P1200869.jpg) (http://postimage.org/image/7m1aslyhv/)

(http://s18.postimage.org/wnbefsqph/P1200870.jpg) (http://postimage.org/image/wnbefsqph/)

(http://s14.postimage.org/hxzaj7jlp/P1200876.jpg) (http://postimage.org/image/hxzaj7jlp/)

(http://s11.postimage.org/lyfjc4urj/P1200877.jpg) (http://postimage.org/image/lyfjc4urj/)

Sorry, for the quality of photos.
thank you. ;) 8)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on November 10, 2012, 07:59:49 PM
Took a good look at my mango tree lately and couldn't help but notice that the sooty mold has really taken hold.  My understanding of this is that it is caused by the sticky secretions of aphids, which then turns black from bacteria in the air.  Correct?
Today I decided to take a soft brush and warm water with a squirt of dish detergent and do some clean up.  Pain in the butt to be sure, but the cleaning was effective.  I'd rather not have to do this again, so I'm guessing the issue is to control aphids.  How best to do this?  And for future cleanups, is there an easier way than the old school manual scrubbing I went through today?
Thank you.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: murahilin on November 10, 2012, 08:10:07 PM
Scale may also cause the sooty mold and not just aphids. The sooty mold grows on the excess carbohydrates caused by the aphids and scale feeding on the leaves.

Aphids and scale are often farmed and protected by ants so if you control the ants you will also be able to control the aphids/scale easier. I control them with the occasional spraying of farm soap. For whitefly I just spray the bottom of the leaves with the hose.

Oh, whitefly will also cause sooty mold. Basically any leaf sucking insect can cause sooty mold because of the excess carbs.

I've found that the sooty mold goes away after a while on its own once you control the insect.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: TnTrobbie on November 10, 2012, 08:17:28 PM
I've found agriculture oil (like Ortho's Volck) to be very effective on mites, ahpids and scale- which inturn eliminates sooty mold in the process. Two consecutive applications, 24hrs apart on both sides of the leaves in the evening when it's cool and preferable not too windy and the pests are good as gone. Dilute per instructions, and apply it using a fine mist, portable pump sprayer....its pretty easy. Used it on my two Sapodillas, NDM, Maha for sooty mold from scale, and some ficus and hedges that had white fly problems (tiny white flies), and it just smothers those suckers and they are dead. The finer the mist/spray the better. I'm really impressed with it and it sells for less than $6.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on November 12, 2012, 08:06:46 AM
I've found agriculture oil (like Ortho's Volck) to be very effective on mites, ahpids and scale- which inturn eliminates sooty mold in the process. Two consecutive applications, 24hrs apart on both sides of the leaves in the evening when it's cool and preferable not too windy and the pests are good as gone. Dilute per instructions, and apply it using a fine mist, portable pump sprayer....its pretty easy. Used it on my two Sapodillas, NDM, Maha for sooty mold from scale, and some ficus and hedges that had white fly problems (tiny white flies), and it just smothers those suckers and they are dead. The finer the mist/spray the better. I'm really impressed with it and it sells for less than $6.
Keep an eye on things as this will not usually act a a cure all.  Also, it does not and will not rid whitefly, ficus or spiraling.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 12, 2012, 09:34:03 AM
The leaves show serious micro-nutrient deficiency.  Add Iron and Manganese and Sulfur.

The black spots look like anthracnose.  Many products are labeled to treat this, including ones containing Copper or Potassium Phosphite.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 12, 2012, 09:41:06 AM
Mealybugs will also contribute to sooty mold.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: anaxel on November 12, 2012, 10:15:42 AM
Hi Guanabanus, :D 8) ;)
 thank you very much to have answered me, I waited for a solution to be able to look after the plant.
I am going to treat leaves and to look after the plante(treat).
thank you all.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Bonakyon on November 22, 2012, 12:17:34 AM
I have a Golden Queen mango seedling that was spouted from seeds that were sent to me from Hong Kong. The seedling started out fine but after about a month one of the young leaves started browning on the edges. After a couple more weeks the other top leaves started browning as well. Now it looks as thought I might lose the plant and I really don’t want to lose this mango tree. I have no clue as to what’s wrong or what to do. I live in the Caribbean, and in my area mango trees grow like weeds… In fact after mango season we have to “mow” the seedling to stop more trees from coming up all over the place. Is this variety different in needs than all other varieties in the Caribbean..? I added a bit of sheep manure to the starter mix but the amount was negligible. After seeing the browning I decided to put the tree in the ground to see if it would fare any better but it seems to be getting worst… what should I do…?



(http://s13.postimage.org/acjwshooz/IMG_20121010_00296.jpg) (http://postimage.org/image/acjwshooz/)

(http://s7.postimage.org/wabs85w5z/IMG_20121115_00340.jpg) (http://postimage.org/image/wabs85w5z/)

(http://s11.postimage.org/71ibhz5pr/IMG_20121121_00344.jpg) (http://postimage.org/image/71ibhz5pr/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on November 24, 2012, 08:09:19 AM
Hard to really say what is going on with your seedling with any certainty.  I would consider several things.  First I note that the problem is with the new growth and not the older established growth.  I have seen new growth burn off with wind and temperature issues, but that would presumably not be your issue in your location. I suppose wind heavily laden with salt could cause this type of burn.  I don't think it is a root problem as that would affect all the leaves and not the newer ones only.  Manure can burn a plant and even in small quantities, cause damage. That could be the issue. I have also seen new growth burn off with lack of water.  Has the water supply been constant.  My experience with mangoes is that in warmer climates, the more water the better.  I'd would wash the manure away from the roots and water heavily.  The plant should respond unless there is something else going on.  If there is something else going on, I am sorry to say I don't know what it would be nor how you would treat it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Charlie23 on December 01, 2012, 10:36:10 AM
noticed several leaves got some black powdery stuff, and even spread to branches.... any idea?  Fungicide spread works?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: TnTrobbie on December 01, 2012, 11:14:22 AM
Sooty mold. A result of insects that secrete sugary substance. Volck agri oil can kill suffocate the insects, thus ridding of the sooty mold. Or sulfur fungicide application. Do either when it is cool outside (evenings).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 01, 2012, 10:55:54 PM
Yes.  Just be sure not to mix sulfur and oil, and don't even spray them within three weeks of each other.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: BestDay on December 04, 2012, 06:18:51 PM
Help out a new guy and tell me what this is.  There is scale here that I think is dead but there is also what looks like fungus or mold.

Thanks
Bill

(http://i1145.photobucket.com/albums/o518/BestDay23/Rosigold12-3-12.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlyingFoxFruits on December 04, 2012, 07:00:01 PM
looks like Flight why or Bealy mugs.

I'm sorry, white fly or mealy bugs.

quite a few sap sucking insects produce a white waxy substance to deter predators.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Rtreid on December 04, 2012, 07:13:02 PM
It is hard to tell from the photo, but it looks as if it could be wooly whitefly or mealybug.  If there are small white flying insects around, then it might be whitefly. If there are any hibiscus plants around this tree take a look at them as they are a magnet for the wooly whitefly.  If the spots on the plants look like soft many legged buggers then they are likely to be mealybug. The two spots on the upper part of the right hand branch do look a lot like scale.

Richard
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: TREESNMORE on December 04, 2012, 07:21:55 PM
Spray with oil looks like scale
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on December 04, 2012, 07:31:13 PM
Darn you Mods  :-*, I had just made a post when you switched to this thread and my post was lost...third time today  >:( >:(  :blank:

Being the leaves look clean, I would say no to it being whitefly.  As this is a pretty bad infestation, I would use something a little more potent than an oil.  While I know some of you do not like or believe in pesticides and also think oil is a cure all,,,I am not one of those people.  Sometimes you need to use something with a little power behind it.

Oh, I would also isolate this tree from the rest of your plants/trees till you have this infestation well under control.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: natsgarden123 on December 05, 2012, 09:06:02 AM
Yes.  Just be sure not to mix sulfur and oil, and don't even spray them within three weeks of each other.

Why is that?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 05, 2012, 08:30:37 PM
Leaf burn.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tropical66 on December 06, 2012, 01:25:46 AM


    Please read this article

    http://www.jbiopest.com/users/LW8/efiles/Vol_5_0_72_76F.pdf (http://www.jbiopest.com/users/LW8/efiles/Vol_5_0_72_76F.pdf)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: samuelforest on December 14, 2012, 07:20:55 PM
My mango tree lost 10 leaves this week! It has some new growth, but some of it wilts and dies... What should I do?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangomandan on December 14, 2012, 11:46:14 PM
This morning I noticed a lot of leaves on an otherwise robust young CC mango tree have a bronzed look to them.
Any idea what this might be?   I usually go with benign neglect unless a problem seems serious.  But I don't want this to spread to other trees if I can avoid it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on December 15, 2012, 12:01:53 AM
pictures people, please post pictures so we can help you...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: murahilin on December 15, 2012, 08:54:38 AM
pictures people, please post pictures so we can help you...

Pictures? To help diagnose a plant problem? I've never heard of such a thing.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangomandan on December 15, 2012, 09:11:45 AM
Sorry.  I'll try to post pics when I get home Sun night or Monday.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: samuelforest on December 15, 2012, 02:08:57 PM
I just discovered that my tree had root rot... :( I repotted it in the gritty mix. I hope it will survive.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 15, 2012, 08:39:53 PM
Mangomandan,

Thrips is a common problem under mango leaves in cool weather.  The leaves often look bronzed and then burnt.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangomandan on December 16, 2012, 07:07:48 PM
Thanks, Har.  I'll do some googling to learn about thrips.

Meanwhile I can post pics of the affected Coco Cream and Lemon Zest.
(http://s9.postimage.org/n2mhlu1uz/also_Coconut_Cream.jpg) (http://postimage.org/image/n2mhlu1uz/)

(http://s9.postimage.org/qaqyyvo4r/Coco_Cream.jpg) (http://postimage.org/image/qaqyyvo4r/)

(http://s9.postimage.org/3nbpsq8kr/Lemon_Zest.jpg) (http://postimage.org/image/3nbpsq8kr/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on December 16, 2012, 09:02:32 PM
My Cogshall has the same appearance.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mr. Clean on December 24, 2012, 02:38:32 PM
DELETED
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: samuelforest on December 24, 2012, 02:56:39 PM
Yes it is, it only means that flowering signal wasn't big enough. I mean the variation of temperature that introduced blooms.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on December 24, 2012, 03:15:12 PM
My nam doc mai, which for the past 7 years has been green leafed and beautiful, started to look badly this year starting around August. Is this powdery mildew? On some leaves, it looks like it has a nutrient deficiency, but it's planted in giant compost pit and has never shown signs of deficiency like this.

(http://s14.postimage.org/fx911yffx/DSC01216.jpg) (http://postimage.org/image/fx911yffx/)

(http://s8.postimage.org/6pmo9oskx/DSC01217.jpg) (http://postimage.org/image/6pmo9oskx/)

(http://s13.postimage.org/txk6abz6b/DSC01218.jpg) (http://postimage.org/image/txk6abz6b/)

(http://s7.postimage.org/4a3gio87b/DSC01219.jpg) (http://postimage.org/image/4a3gio87b/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on December 24, 2012, 05:09:07 PM
Thanks, Har.  I'll do some googling to learn about thrips.

Meanwhile I can post pics of the affected Coco Cream and Lemon Zest.
(http://s9.postimage.org/n2mhlu1uz/also_Coconut_Cream.jpg) (http://postimage.org/image/n2mhlu1uz/)

(http://s9.postimage.org/qaqyyvo4r/Coco_Cream.jpg) (http://postimage.org/image/qaqyyvo4r/)

(http://s9.postimage.org/3nbpsq8kr/Lemon_Zest.jpg) (http://postimage.org/image/3nbpsq8kr/)

Strange combination of symptoms, but I don't think there is anything to worry about.  Something is eating and something has burned the leaves.  Either way, it'll rebound without any problem.  Could the burn have occurred from lack of water and windy conditions?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on December 25, 2012, 09:39:00 AM
Yes it is, it only means that flowering signal wasn't big enough. I mean the variation of temperature that introduced blooms.
?????
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on December 25, 2012, 09:43:46 AM
My nam doc mai, which for the past 7 years has been green leafed and beautiful, started to look badly this year starting around August. Is this powdery mildew? On some leaves, it looks like it has a nutrient deficiency, but it's planted in giant compost pit and has never shown signs of deficiency like this.

(http://s14.postimage.org/fx911yffx/DSC01216.jpg) (http://postimage.org/image/fx911yffx/)

(http://s8.postimage.org/6pmo9oskx/DSC01217.jpg) (http://postimage.org/image/6pmo9oskx/)

(http://s13.postimage.org/txk6abz6b/DSC01218.jpg) (http://postimage.org/image/txk6abz6b/)

(http://s7.postimage.org/4a3gio87b/DSC01219.jpg) (http://postimage.org/image/4a3gio87b/)
do not see any signs of powdery mildew, which usually occurs in the cooler months.  I have, however, seen damage similar to that but do not have any answers.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on December 25, 2012, 10:17:52 AM
That looks like potassium deficiency.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on December 25, 2012, 12:14:20 PM
The strange thing is that I've been giving it 0-0-50, and this is the first year that it's done this. It did seem to start not long after pruning, so I wonder if it's some sort of bacterial or fungal infection.

That looks like potassium deficiency.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: murahilin on December 25, 2012, 12:23:47 PM
Yes it is, it only means that flowering signal wasn't big enough. I mean the variation of temperature that introduced blooms.
?????

What SamuelForest said is correct. The half bloom half leaf growth is usually a result of temperature changes. I've posted links to books and articles that explained the process a few times in other posts.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on December 25, 2012, 02:33:51 PM
The strange thing is that I've been giving it 0-0-50, and this is the first year that it's done this. It did seem to start not long after pruning, so I wonder if it's some sort of bacterial or fungal infection.

That looks like potassium deficiency.

Ya, bacterial infections can exhibit similar symptoms.

Time to send out the Har signal! I'm sure he doesn't have better things to be doing on Christmas ;)

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 25, 2012, 11:03:22 PM
Cookiemonster,

Powdery mildew.  The cool temperature requirement for growth of Powdery Mildew is 76 degrees Fahrenheit or below.

Appears deficient in Magnesium and possibly in Zinc.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on December 26, 2012, 07:07:19 AM
Powdery Mildew also tends to occur in the Spring.

http://edis.ifas.ufl.edu/vh048 (http://edis.ifas.ufl.edu/vh048)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mike T on December 26, 2012, 07:28:49 AM
Telling a nutrient deficiency from leaves is quite easy with some of the tables of ID pictures around.Old leaves showing symptoms,young leaves showing symptoms,yellow veins or interveinal yellowing, general yellowing,bunching small  or yellow veins etc can let you pick which nutrients are deficient.Secondary deficiencies induced by excess of one nutrient in fertilizer and multiple deficiencies are hard to pick. Excesses and toxicities can also be hard to identify and seperate from some diseases.Excess chlorides burn leaf edges and especially tips and excess Na bronzes leaves and these are easy excesses to identify..
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on December 26, 2012, 12:05:32 PM
Thanks, Har. I had a feeling it was powdery mildew. Can I just wait it out, or do I need to treat with dreaded sulfur?

Cookiemonster,

Powdery mildew.  The cool temperature requirement for growth of Powdery Mildew is 76 degrees Fahrenheit or below.

Appears deficient in Magnesium and possibly in Zinc.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropicdude on December 26, 2012, 01:05:01 PM
Thanks, Har. I had a feeling it was powdery mildew. Can I just wait it out, or do I need to treat with dreaded sulfur?

Cookiemonster,

Powdery mildew.  The cool temperature requirement for growth of Powdery Mildew is 76 degrees Fahrenheit or below.

Appears deficient in Magnesium and possibly in Zinc.

I am noticing a few leaves with Powdery Mildew again, I seem to get it during this time of year on a couple of my mango trees, , when temps cool down a bit.  in the summer it tends to clear up.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bangkok on December 28, 2012, 02:12:03 AM
Does anybody know what this is and how i can control it?

I think it is the mealy bug because i see the ants near them all the time but this kills my small mangofruits and whole flowers.

I sprayed neem oil with Spruzzit and dishwashingsoap  allready some days ago but it is still there. What is a better way to get rid of it?


(http://s13.postimage.org/t742rmswz/mangoflower.jpg) (http://postimage.org/image/t742rmswz/)

(http://s8.postimage.org/mxzv7tddd/mangotree.jpg) (http://postimage.org/image/mxzv7tddd/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 28, 2012, 11:43:20 PM
Bangkok,
It looks like powdery mildew on your mango blossoms, not mealy bug.  So you need a curative fungicide.  Make sure the label doesn't forbid spraying on open blooms (full flower).

Cookie Monster.
Sulfur is fine when temperatures won't be above about 80 degrees Fahrenheit.  Make sure that you haven't sprayed oil within the last three weeks, and don't spray oil for three or four weeks after sulfur.

Or you might try Plant Doctor, which is labeled for anthracnose on mangos and for powdery mildew on other plants.  ??

Insecticidal soap also kills hyphae of powdery mildew when it is applied when they are actively growing.

Presence of enough oil to repel water also prevents powdery mildew growth.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bangkok on December 29, 2012, 06:59:08 AM
Then powdery mildew can even grow in the full sun here in Bangkok. I will spray something because it ruined many flowers allready.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: jc on December 29, 2012, 09:42:11 AM
Any ideas as to what this cayenne pepper looking stuff is?  It's on my Rosigold, Lancetilla, and Lula avocado leaves.  Smears easily and looks like wet rust streaks.

How can I get rid of it?

(http://s9.postimage.org/kkc3fv96z/IMAG0480.jpg) (http://postimage.org/image/kkc3fv96z/)

(http://s13.postimage.org/jgtcq3g9v/IMAG0481.jpg) (http://postimage.org/image/jgtcq3g9v/)

(http://s7.postimage.org/pz7gd259j/IMAG0482.jpg) (http://postimage.org/image/pz7gd259j/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropicalgrower89 on December 29, 2012, 02:04:18 PM
Red spider mites. I just give the tree a good soak of water since the spider mites hate water and moisture.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on December 30, 2012, 09:46:19 AM
I would go with something just a little stronger than H2O.  Volck oil should rid the tree of mites.  Just keep in mind of any sulfur application if/when spraying oil.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: natsgarden123 on December 31, 2012, 02:25:15 PM
This is the only tree in my yard which has this:  Lemon Zest

Please Help!

(http://i1112.photobucket.com/albums/k495/nsobgyn/001-6.jpg)

(http://i1112.photobucket.com/albums/k495/nsobgyn/002-6.jpg)

(http://i1112.photobucket.com/albums/k495/nsobgyn/003-5.jpg)

(http://i1112.photobucket.com/albums/k495/nsobgyn/004-5.jpg)

(http://i1112.photobucket.com/albums/k495/nsobgyn/005-3.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropicdude on December 31, 2012, 06:36:18 PM
Does the white rub off ? or is it lack of chlorophyll in the leaf cells. ?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 31, 2012, 09:09:46 PM
Mites.  See above.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: natsgarden123 on December 31, 2012, 10:03:45 PM
Thanks. High temp supposed to be 79 tommorrow. Too warm for oil? Anything else effective?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 01, 2013, 11:10:22 AM
On hardened mango leaves any temperature below 80 Fahrenheit should be OK to spray heavy dormant oil like Volck Oil.  Some of the highly refined light summer oils can be sprayed on hardened mango leaves even above 90 degrees.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: natsgarden123 on January 02, 2013, 09:35:06 AM
On hardened mango leaves any temperature below 80 Fahrenheit should be OK to spray heavy dormant oil like Volck Oil.  Some of the highly refined light summer oils can be sprayed on hardened mango leaves even above 90 degrees.

sprayed the entire tree yesterday- does this need to be repeated?  thanks
Nat
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 02, 2013, 09:44:21 PM
When you see live mites walking around, spray again.  Preferably before they have had time to lay eggs.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: jc on January 06, 2013, 10:35:00 PM
Red spider mites. I just give the tree a good soak of water since the spider mites hate water and moisture.
I would go with something just a little stronger than H2O.  Volck oil should rid the tree of mites.  Just keep in mind of any sulfur application if/when spraying oil.

Thanks for the diagnosis and treatment options.  Picked up some Organocide 3 in 1, gonna give it shot. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropicdude on January 24, 2013, 08:26:08 PM
Been wanting to get these up, I have a problem with a few of my potted mango trees, hope someone can identify the problem.

I have looked at probably a hundred photos online of mango problems but cannot seem to pin down one that looks similar, closest I could find was a sulfur deficiency.

notice that the chlorosis is not just between the veins, its patchy randomly scattered , although it seems to concentrate  towards the outer part of the leaf away from the stem.   also,  doesn't seem to matter if leaf is new or old.   My lemon Zest, Coconut Cream, and Maha Chanok have similar conditions.  although the MC is only slight.  the rest of my mangoes are ok.

Coconut Cream
(http://i1239.photobucket.com/albums/ff510/William_Crowley/DSCI1308_zpsd20c8efd.jpg)

Close up
(http://i1239.photobucket.com/albums/ff510/William_Crowley/DSCI1309_zps4fcb5afa.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 25, 2013, 07:48:26 PM
I don't know.

Possibilities:  chemical exposure (herbicide), virus, and perhaps sunburn.  In case it is viral, sanitize clippers after use on these plants.
It might also be light damage from mites or thrips or lacebugs.

I don't see Sulfur deficiency.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropicdude on January 25, 2013, 09:51:03 PM
I don't know.

Possibilities:  chemical exposure (herbicide), virus, and perhaps sunburn.  In case it is viral, sanitize clippers after use on these plants.
It might also be light damage from mites or thrips or lacebugs.

I don't see Sulfur deficiency.

I do not use herbicide, except for neem on occasion, but not on this plant,  usually the citrus, and the bigger tree that has a bit of powdery mildew and those trees do not have this.  something microscopic maybe. or something that came then went.  in the same picture you can see a small Kesar just below, that one is healthy as can be.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Herman on February 27, 2013, 11:38:59 PM
Hello mango experts!  The "new" leaves on my mallika mango has been yellow since it flushed in December 2012, and still has not turned green.  Also, it started as yellow-green instead of the red I see in other pics around the internet.  Is this normal or is it some deficiency?  Also I watered it this morning and when I came home from work I noticed some browning at the tips of the new leaves.  I have attached pics.

Thanks for your help!

Herman

(http://s22.postimage.org/rzyl3svst/IMAG0712.jpg) (http://postimage.org/image/rzyl3svst/)

(http://s18.postimage.org/5xzupdq1x/IMAG0713.jpg) (http://postimage.org/image/5xzupdq1x/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on February 28, 2013, 07:54:19 AM
Definitely a mineral deficiency.  I never know, by the color and mottling of the leaf alone, which of the mineral(s) it is missing.  I would apply a time released, balanced fertilizer containing minor elements and see how it responds.  What kind of soil are using and what type of fertilizer are you using? Har (Guanabanas) is much better than me at deciphering the look of the particular mineral lacking by the look of the leaf.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 28, 2013, 10:37:36 AM
Harry is right, as it does look like a multiple deficiency, presumably including of Iron and Potassium, and possibly Nitrogen, Sulfur, Magnesium, Zinc, Manganese....
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangomandan on February 28, 2013, 12:21:15 PM
Are there good fungicide options available in Florida for mango trees?   The Organocide Plant Doctor doesn't seem to be helping my Dot this year, and it rains every single time I apply copper.

I'm finally beginning to understand the wisdom of choosing cultivars that are more resistant to anthracnose.

So, have any of the following varieties been around long enough to give some idea of their relative resistance to anthracnose?

Angie, Coconut Cream, Lemon Zest, Maha Chanok, Po Pyu Kalay, or Spirit of 76
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on February 28, 2013, 01:30:33 PM
it rains every single time I apply copper

Tell me about it......
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on February 28, 2013, 01:30:58 PM
I'm finally beginning to understand the wisdom of choosing cultivars that are more resistant to anthracnose.
So, have any of the following varieties been around long enough to give some idea of their relative resistance to anthracnose?

Angie, Coconut Cream, Lemon Zest, Maha Chanok, Po Pyu Kalay, or Spirit of 76

Maha Chanok, PPK and Angie all have excellent resistance.

Spirit of 76 I would classify as average fungal resistance.

Coconut Cream I can't comment yet, but my small tree has tried to set fruit and they have not demonstrated good holding power so far....but the jury is out (at least it has bloomed and is blooming again).

Lemon Zest.....no blooms on two trees.  The tree itself seems highly susceptible to black sooty mold so I am very skeptical about its overall fungal resistance.

Stay tuned for further updates.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangomandan on February 28, 2013, 01:41:11 PM


Maha Chanok, PPK and Angie all have excellent resistance.



Thanks, Harry. It sounds like I will eventually have some tasty mangos at my disposal.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: puglvr1 on February 28, 2013, 02:12:09 PM
"Are there good fungicide options available in Florida for mango trees?   The Organocide Plant Doctor doesn't seem to be helping my Dot this year, and it rains every single time I apply copper."


Dan, how often are you spraying the Dot mango tree...I was reading the directions for mango trees on the Plant Doctor and it says:

"Spray tree every 14 days
during blossom period, then
monthly until harvest."

Wasn't sure...but, it sounds a little excessive and didn't want to apply it that often? Afraid of the long term affects. Any thoughts?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on February 28, 2013, 02:54:28 PM
I have never heard of being resistant to sooty mold as sooty mold is a byproduct of actual pests, whether on the specific plant or on some other plant not an actual fungus that is attacking the plant.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on February 28, 2013, 03:23:20 PM
You never heard of it?  Probably with good reason.  I may have partially mis-spoke......or mis-stated what I was trying to communicate. 
Black sooty mold is, for sure,  a by product of pests.  In my yard it seems some trees have a perennial problem with it.  So is it that the pests like that tree more than others and so there is more sooty mold on the selected trees?  I imagine most of my trees have the same issues with pests due to their close proximity.  Yet, many do not seem to have an issue with black sooty mold.  So how would I better say what I have observed?  Lemon Zest seems highly susceptible to the insects that bring about black sooty mold?   Is that better? Bottom line, for newly planted trees, there is a wicked case of black sooty mold on both of my Lemon Zest trees, while there is none on many other trees contemporaneously planted.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangomandan on February 28, 2013, 06:43:23 PM


Dan, how often are you spraying the Dot mango tree...I was reading the directions for mango trees on the Plant Doctor and it says:

"Spray tree every 14 days
during blossom period, then
monthly until harvest."

Wasn't sure...but, it sounds a little excessive and didn't want to apply it that often? Afraid of the long term affects. Any thoughts?

I have sprayed it on the Dot every two weeks, more or less.  I've been assuming that it's harmless, at least compared to some of the popular/effective fungicides from the olden days. The limited Googling I've done on Plant Doctor and another brand with the same stuff in it has not turned up any negative long-term effects.  (But then I thought copper was utterly benign until I read otherwise on the forum.)

 But the small fruit on Dot are quite speckled, so I started with copper recently on the whole tree, which has some new blossoms.  As I said, the weather has dampened my enthusiasm for non-systemic fungicides.

I only started with the Plant Doctor last year, so don't have an overall sense of how effective it is.  However, it does at least seem that the Plant Doctor got rid of powdery mildew on Rosigold both last year and this year.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on February 28, 2013, 07:49:15 PM
Some trees do seem to be more highly favored by scale, lemon zest being one. I think it has to do with a couple of factors: 0) how 'sweet' the sap is and 1) how slowly the tree grows. I theorize that scale likes sweet sap and slow growing trees. Amount of sunlight also influences severity of scale problem (but the underlying cause could potentially be slow growth due to lack of sunlight). My glenn only gets sooty mold only on the north side every winter.

That said, I've seen lemon zest trees with and without sooty mold issues -- probably a factor of how established and therefore how fast it grows.

However, they seem to be fairly resistant to anthracnose. I'll see if I can take some snaps of my LZ flowers and fruit.

I have a cute little 1gallon LZ that's starting to flower at about 18 inches tall :-)

You never heard of it?  Probably with good reason.  I may have partially mis-spoke......or mis-stated what I was trying to communicate. 
Black sooty mold is, for sure,  a by product of pests.  In my yard it seems some trees have a perennial problem with it.  So is it that the pests like that tree more than others and so there is more sooty mold on the selected trees?  I imagine most of my trees have the same issues with pests due to their close proximity.  Yet, many do not seem to have an issue with black sooty mold.  So how would I better say what I have observed?  Lemon Zest seems highly susceptible to the insects that bring about black sooty mold?   Is that better? Bottom line, for newly planted trees, there is a wicked case of black sooty mold on both of my Lemon Zest trees, while there is none on many other trees contemporaneously planted.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DuncanYoung on February 28, 2013, 07:59:19 PM
it rains every single time I apply copper

Tell me about it......

Maybe change it up and spray the copper after it rains  :)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangomandan on February 28, 2013, 11:06:40 PM
Dang!  I guess I should have read the label.....  ;D
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: puglvr1 on March 01, 2013, 12:49:31 PM
Thanks Dan!! Good luck with your Dot  :)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Herman on March 01, 2013, 10:08:58 PM
Harry is right, as it does look like a multiple deficiency, presumably including of Iron and Potassium, and possibly Nitrogen, Sulfur, Magnesium, Zinc, Manganese....

Thanks Harry and Har!  Yeah, so I do foliar spray chelated iron, zinc, calcium, magnesium, as well as dynagro foliage pro once every week, alternating.  I also give it epsom salt when I water the roots along with dynamite all purpose fert.  The soil is just what came with it from the nursery.  I have not repotted it yet.  Now I did add some bonemeal last year, but I think I added too much of it.  Perhaps there is nutrient lockout?

Thanks!

Herman
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 02, 2013, 09:49:46 PM
If you are really going to spray this often, the dosage should be very light.  Sometimes you could just use seaweed extract/kelp, in your alternating program.  This would guarantee the various trace elements.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on March 03, 2013, 02:10:05 PM
elp! What the hack is this? Is this just a super severe iron deficiency? Younger leaves are most affected.

(http://s7.postimage.org/wuo0l1ih3/DSC01425.jpg) (http://postimage.org/image/wuo0l1ih3/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 03, 2013, 10:28:39 PM
Not an Iron deficiency.

I don't know what it is.  It is very strange to see healthy green at margins and paled out veins.

In Iron deficiency the veins are the last parts to lose their green.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mario on March 03, 2013, 10:33:31 PM

(http://s12.postimage.org/dx5wr6u7d/20130303_115321.jpg) (http://postimage.org/image/dx5wr6u7d/)
What could this be?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on March 04, 2013, 12:42:47 AM
elp! What the hack is this? Is this just a super severe iron deficiency? Younger leaves are most affected.

(http://s7.postimage.org/wuo0l1ih3/DSC01425.jpg) (http://postimage.org/image/wuo0l1ih3/)
Anything on the underside?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on March 04, 2013, 12:46:16 AM

(http://s12.postimage.org/dx5wr6u7d/20130303_115321.jpg) (http://postimage.org/image/dx5wr6u7d/)
What could this be?
That could be iron deficiency.  What are you fertilizing with?  Looks like it could use a proper fert program, including a good minor element foliar spray. What is the composition of the soil it is in?  It looks like its filled of a lot of rock...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 04, 2013, 09:33:40 AM
Mario,

Zinc deficiency and Iron deficiency, and probably other deficiencies.  As BSBullie recommends, give it good mixed granular fertilizer plus foliar nutritional spray.

Also do a soil drench with Sequestrene 138 or with Ferrilene.  Use several light doses, a week or two apart, as one can easily cause damage with too much iron.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mario on March 04, 2013, 11:26:29 AM
Ok will do that. I purchased the tree like this from hd. Its on a clay type doil,ofcourse i amended the soil
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on March 04, 2013, 01:01:05 PM
Thanks for your input, Har. That's what's confusing me too. This year in particular I've been seeing several trees in my neighborhood with that problem. It's also photo-affected; the shaded out portions of the leaf get it less. This morning, Dr Campbell said that he thinks it could be severe iron deficiency. I'm going to go ahead and try an iron drench.

Not an Iron deficiency.

I don't know what it is.  It is very strange to see healthy green at margins and paled out veins.

In Iron deficiency the veins are the last parts to lose their green.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: jc on March 05, 2013, 06:40:37 PM
My little Angie definitely needs some micronutrients. Do you think its safe to give it a spritz?  I was thinking of mixing a 1/2 strength batch of chelated micros in a spray bottle.  Yea, nay?


(http://s10.postimage.org/d4gbik42d/Image1.jpg) (http://postimage.org/image/d4gbik42d/)

(http://s10.postimage.org/c3g2tfn2t/Image2.jpg) (http://postimage.org/image/c3g2tfn2t/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on March 05, 2013, 07:14:05 PM
Yea!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DuncanYoung on March 05, 2013, 07:54:52 PM
Yea, and a pinch of osmocote will help as well.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on March 05, 2013, 08:16:51 PM
If it were me, I'd just give it an osmocote equivalent with minors. Iron doesn't absorb very well through the leaves, so you're better off putting it in the soil (via osmocote). Wouldn't hurt anything to spray though.

Looks like a pine island graft.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: jc on March 05, 2013, 09:12:03 PM
Ok cool. I've never used osmocote. I have had some good success with chelated foliars though.  I'll have to look for osmocote w micros.

No idea whose label is on the tree, but I got it a couple of weeks ago from Mike Bender. Coincidently, Mike now works for PIN.  ???
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on March 05, 2013, 09:44:27 PM
I think Home Cheapo and Lows both carry Dynamite timed release with minors.

Ok cool. I've never used osmocote. I have had some good success with chelated foliars though.  I'll have to look for osmocote w micros.

No idea whose label is on the tree, but I got it a couple of weeks ago from Mike Bender. Coincidently, Mike now works for PIN.  ???
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: jc on March 05, 2013, 09:57:41 PM
Thank you fine Sir.

Love the new avatar. Priceless!!!

I think Home Cheapo and Lows both carry Dynamite timed release with minors.

Ok cool. I've never used osmocote. I have had some good success with chelated foliars though.  I'll have to look for osmocote w micros.

No idea whose label is on the tree, but I got it a couple of weeks ago from Mike Bender. Coincidently, Mike now works for PIN.  ???
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DuncanYoung on March 05, 2013, 10:17:33 PM
Bonide Iron Drench, has all your minors, applied as a soil drench, along with osmocote granules should perk it right up.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on March 06, 2013, 08:48:56 PM
HAHAHAHA Thanks :-)

Thank you fine Sir.

Love the new avatar. Priceless!!!

I think Home Cheapo and Lows both carry Dynamite timed release with minors.

Ok cool. I've never used osmocote. I have had some good success with chelated foliars though.  I'll have to look for osmocote w micros.

No idea whose label is on the tree, but I got it a couple of weeks ago from Mike Bender. Coincidently, Mike now works for PIN.  ???
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on March 06, 2013, 08:51:43 PM
I got another input from Dr Crane -- who believes it to be solarization, where cold temps and high light cause cell damage. Interesting. It must be a combination of iron deficiency and solarization.

elp! What the hack is this? Is this just a super severe iron deficiency? Younger leaves are most affected.

(http://s7.postimage.org/wuo0l1ih3/DSC01425.jpg) (http://postimage.org/image/wuo0l1ih3/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlyingFoxFruits on March 06, 2013, 08:54:01 PM
Dr. Crane is on point!  You are smart to get his input!!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on March 06, 2013, 09:18:19 PM
I thought Dr. Crane was a ficticious sitcom character.  You mean Frasier was really a doctor?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on March 06, 2013, 09:19:43 PM
:-) He's pretty dang smarty pants ain't he. I figured between the 3 gurus (Har, Dr Crane, and Dr Campbell) I'd get a pretty good diagnosis :-).

Dr. Crane is on point!  You are smart to get his input!!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mario on March 20, 2013, 08:06:09 PM
I planted this tree about 3weeks ago and it seems to be doing good i would think but it has some leaves that are looking like this.any ideas?
(http://s21.postimage.org/n1h1p9e83/20130320_165609.jpg) (http://postimage.org/image/n1h1p9e83/)

(http://s4.postimage.org/qwhgg8ugp/20130320_165616.jpg) (http://postimage.org/image/qwhgg8ugp/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on March 20, 2013, 08:25:33 PM
Would need to see the condition of the entire tree, but that leaf looks indicative of normal spring leaf drop, where older leaves yellow and drop.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mario on March 20, 2013, 08:28:47 PM
Would need to see the condition of the entire tree, but that leaf looks indicative of normal spring leaf drop, where older leaves yellow and drop.

(http://s11.postimage.org/thw67noq7/20130320_172655.jpg) (http://postimage.org/image/thw67noq7/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 20, 2013, 10:32:34 PM
Correct.  Old leaves drop during new growth flush, especially during dry weather.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mario on March 20, 2013, 11:06:32 PM
Thanks so much. Now i can stay calm
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Californiatropicals on March 22, 2013, 10:56:11 PM
Hello all, I was hoping to take advantage of the knowledge of some of the mango experts in here.. I wanted to know if this is a deficiency ?

(http://i1243.photobucket.com/albums/gg545/dvaldez1286/mangoleaf_zps8de7a51d.jpg)

I just drenched and foliar fed today with Ironite plus ( best I could find) has chelated iron, zinc, magnesium, and boron.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 23, 2013, 10:34:36 PM
Severe Manganese deficiency.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Californiatropicals on March 23, 2013, 11:21:09 PM
Severe Manganese deficiency.

thanks for your response! Maganese or magnesium? What is a good way to provide it??
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: jc on March 25, 2013, 08:55:00 PM
This is my neighbor's coconut cream. It looks pretty bad any ideas?  Fertilizer burn and ?



(http://s21.postimg.cc/ki48xj3pv/image.jpg) (http://postimg.cc/image/ki48xj3pv/)

(http://s23.postimg.cc/ivjmq1h2f/image.jpg) (http://postimg.cc/image/ivjmq1h2f/)

(http://s3.postimg.cc/58irvpsb3/image.jpg) (http://postimg.cc/image/58irvpsb3/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FRUITBOXHERO on March 25, 2013, 09:05:32 PM
Does anyone know what this bug is and if its a good bug or should start killing them
(http://s7.postimg.cc/6q5jzu2rb/image.jpg) (http://postimg.cc/image/6q5jzu2rb/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: zands on March 25, 2013, 09:16:55 PM
good he/she/it  is spreading pollen around........pollinating    People are saying he is harmful....I'll take a closer look
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Seadation on March 25, 2013, 09:57:24 PM
I have been killing them I am pretty sure those beetles are bad and they eat the baby mangos. Search Asian Mango Flower Beetle
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JeffDM on March 25, 2013, 10:19:23 PM
I'm not an expert, but that thing looks like it's related to my ex-wife.
You guys in Florida sure have a lot of bugs.
First thing I noticed when I moved to San Diego 40+ years ago was the absence of bugs - in warm weather, we can leave the sliding glass door out to our patio open all day without the screen.  Only have to close the screen door at night when the inside lights attract moths.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FRUITBOXHERO on March 25, 2013, 10:50:08 PM
They are also on the leaves of the tree, it's an odd looking beetle and it flys pretty damn good. I'll post some pics of the leaves it is eating (or I think he's eating it) just the edge of the leafs are eaten
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mr. Clean on March 26, 2013, 12:13:52 AM
I think fertilizer burn.

This is my neighbor's coconut cream. It looks pretty bad any ideas?  Fertilizer burn and ?



(http://s21.postimg.cc/ki48xj3pv/image.jpg) (http://postimg.cc/image/ki48xj3pv/)

(http://s23.postimg.cc/ivjmq1h2f/image.jpg) (http://postimg.cc/image/ivjmq1h2f/)

(http://s3.postimg.cc/58irvpsb3/image.jpg) (http://postimg.cc/image/58irvpsb3/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 26, 2013, 12:14:16 AM
Magnesium deficiency.

The tip burn may be from an episode of water-logging, from excess sea salt, or fertilizer burn.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Dangermouse01 on March 26, 2013, 05:29:15 AM
Euphoria sepulcralis
http://edis.ifas.ufl.edu/pdffiles/IN/IN75000.pdf (http://edis.ifas.ufl.edu/pdffiles/IN/IN75000.pdf)

DM
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: jc on March 26, 2013, 06:35:27 AM
Thanks, Har!

Magnesium deficiency.

The tip burn may be from an episode of water-logging, from excess sea salt, or fertilizer burn.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: jc on March 26, 2013, 06:43:28 AM
Found some on my trees.

Another lovely gift from the East. Hopefully the lizards like them.  ???
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: zands on March 26, 2013, 07:19:09 AM
I'm not an expert, but that thing looks like it's related to my ex-wife.
You guys in Florida sure have a lot of bugs.
First thing I noticed when I moved to San Diego 40+ years ago was the absence of bugs - in warm weather, we can leave the sliding glass door out to our patio open all day without the screen.  Only have to close the screen door at night when the inside lights attract moths.

Humid climates means more bugs, more fungus, more plant diseases. Much of California commercial agriculture is done in dry areas that water is brought to. It depends on this irrigation. So commercial growers in California can cut back on pesticides...at least that's my theory.

In Florida our water comes from the sky. In California you have to bring the water to the tree or other plant
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on March 26, 2013, 10:45:24 AM
HAHAHAHAHA

I'm not an expert, but that thing looks like it's related to my ex-wife.
You guys in Florida sure have a lot of bugs.
First thing I noticed when I moved to San Diego 40+ years ago was the absence of bugs - in warm weather, we can leave the sliding glass door out to our patio open all day without the screen.  Only have to close the screen door at night when the inside lights attract moths.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropicdude on March 27, 2013, 02:22:13 AM
Euphoria sepulcralis
http://edis.ifas.ufl.edu/pdffiles/IN/IN75000.pdf (http://edis.ifas.ufl.edu/pdffiles/IN/IN75000.pdf)

DM

I see he is a bad guy for sure.   almost looks like the nasty fellow that was nibbling on my mangosteen roots, except he had smooth shell, not this Klingon forehead looking beetle.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rusahlynn on March 28, 2013, 05:07:11 PM
I need help with my mango, but can't seem to get my pictures to post :( I used the "add image to post" button, and upload my picture, but it won't copy anything to here. I am on a different forum that uses the exact same system of posting pictures and it works just fine there...what am I missing?!

My issue with my little mango plant (approximately 8" tall) is that the leaves are curling and brown, and it's tiny trunk has split in one spot. Also, some leaves came off and there's a "scab" (for lack of a better word) where they were, does this prevent new growth? (It happened on the sides and the top, there were three tiny (1/2") leaves coming out the top, and they got knocked off :( ) it was planted last June, and grew well until about 4 months ago, and hasn't grown at all since. (Besides those three leaves that got knocked off a couple weeks ago). I do live in Canada, and we have very cold winters, but it's been in a pot in my (cool) house the whole time. Any idea on why it could be going brown? (And I realize its hard to tell without photos)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 28, 2013, 09:59:14 PM
Extremely low air humidity could be stressing the leaves.

There could be a nutritional deficiency, such as not enough Potassium.

There could be microscopic bud-mites.  Or thrips.

There could be powdery mildew if the air in the house is ever of high humidity and cool.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rusahlynn on March 29, 2013, 12:22:44 AM
Extremely low air humidity could be stressing the leaves.

There could be a nutritional deficiency, such as not enough Potassium.

There could be microscopic bud-mites.  Or thrips.

There could be powdery mildew if the air in the house is ever of high humidity and cool.

How could I tell which it is? And I looked, and there is tiny specks of white stuff on the backs of the leaves, would that be bugs? If so, how would I get rid of them?
And I have no idea if its humid or not in my house....generally the area I live in is quite dry...but my house might be more humid...but I don't think so.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rusahlynn on April 01, 2013, 04:05:37 PM
Last year my sister planted a mango seed from a store bought mango (so I have no idea what variety it is!), and once it started growing, she gave it to me. That was last July. It grew well for the next couple months (it was in a small pot on my windowsill), but then seemed to stop growing and the leaves started going brown :( I thought maybe it just needed a bigger pot, so I moved it to a little bit larger of a pot, but it didn't seem to help :( I am wondering if it was just the cold and lack of much sunlight that stopped its growth? I had a couple leaves fall off, and the stalk appears to have had a split down it, as there's a hard brown like running down it. Now, I'm seeing what appears to be new growth in places, which is very exciting as it means its still alive! But I'm wondering what to do about the brown leaves? And is it ok to keep it indoors? Or should I move it outside at some point?

I realize it'll be hard to "diagnose" the problem without seeing pictures, but I can't seem to get the post an image link to work :(
If it helps, the brown appears to have started on the edges of the leaves and has worked it's way toward the middles. I looked under the leaves and there a tons of tiny white specks, but I don't have a magnifying glass so I can't tell if its bugs or dust  :-\

Oh and I live in Canada, and it gets very hot in the summer (100+ degrees F) and very cold in the winter (well below freezing).
(http://i1106.photobucket.com/albums/h373/rusahlynn/DSCN5261.jpg)
(http://i1106.photobucket.com/albums/h373/rusahlynn/DSCN5270.jpg)
(http://i1106.photobucket.com/albums/h373/rusahlynn/DSCN5275.jpg)
(http://i1106.photobucket.com/albums/h373/rusahlynn/DSCN5279.jpg)
(http://i1106.photobucket.com/albums/h373/rusahlynn/DSCN5283.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlyingFoxFruits on April 01, 2013, 04:09:43 PM
low humidity is a big problem...turns leaves brown.

good luck with your mango!  Youre courageous!

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on April 01, 2013, 06:22:50 PM
I realize it'll be hard to "diagnose" the problem without seeing pictures

Hard?  I would say near impossible.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rusahlynn on April 09, 2013, 03:05:24 PM
I realize it'll be hard to "diagnose" the problem without seeing pictures

Hard?  I would say near impossible.

Pictures added :)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on April 09, 2013, 03:10:27 PM
I really can't say what caused the browning of your leaves.  What I can say is that if new leaves are forming, ansd those leaves have no issue with the browning, then you needn't worry about it.  Mango leaves can drop for various reasons and can get burned by chemicals, salt, sun, cold, low humidity and probably a host of other things. So, I would watch the new leaves, keep humidity and light up, stay away from chemical applications and see what happens.  Good luck.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: adiel on April 09, 2013, 03:12:40 PM
Have you added anything to the soil?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: cwojo on April 09, 2013, 03:18:37 PM
My pickering had leaves that looked exactly like that. it also lived in a pot. couple weeks after the brown spots appeared the leaves smelled rotten, they started to drop, and the limb was actually dead. very surprising because it was doing great! the whole tree dried and rotted, dropped all leaves, and is now just a small stick in a pot :(
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rusahlynn on April 09, 2013, 03:29:00 PM
My pickering had leaves that looked exactly like that. it also lived in a pot. couple weeks after the brown spots appeared the leaves smelled rotten, they started to drop, and the limb was actually dead. very surprising because it was doing great! the whole tree dried and rotted, dropped all leaves, and is now just a small stick in a pot :(

That happened to my sisters avocado too :( she figured out it was some kind of big (I can't remember what it's called....black something or other!), and she found a spray that killed it. Also apparently the bug doesn't like sand so she covered the top of the soil in sand. As did I, thinking it might be the same thing....but it doesn't seem to be....

And no, I haven't added anything to the soil.
I will keep an eye on the new leaves and see if they turn brown as well...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: demingcr on April 09, 2013, 03:39:38 PM
what soil is it potted in, it looks like ash?

There seems to be a dish underneath the pot which can cause water to pool at the feet of the plant and eventually cause root rot. This would be more prevalent in a thicker potting mix where the water can't drain all that well.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rusahlynn on April 09, 2013, 04:36:02 PM
what soil is it potted in, it looks like ash?

There seems to be a dish underneath the pot which can cause water to pool at the feet of the plant and eventually cause root rot. This would be more prevalent in a thicker potting mix where the water can't drain all that well.

It's potted in a tropical plant soil mix...I had no idea what to use, so I just used that....I also mixed in some of that white stuff that's supposed to make it drain well since I had heard that mangos like well drained soil.
What you're seeing is the sand I put on top of the soil to prevent getting the same little bugs that my sister had that killed her avocado....I have no idea if that's ok or not  :-\
I put some pebbles in the bottom of the pot over the hole so that the water wouldn't pool, the dish is just there to keep water off my table, there is rarely water sitting in the dish...but I'll be sure to keep an eye on it and dump it immediately if theres any water in it! Thanks!!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MangoFang on April 09, 2013, 05:26:35 PM
The white stuff I believe is called perlite....


And I beg to differ but Low Humidity is NOT a problem with mangoes....I live in a desert - if that was true I would have every single leaf of every mango looking like that one......

It could be many things - how often are they watered, do they sit in water after watering (guess that issue's been mentioned already), too much fertilizer, the water has a high salt content and if any potted plant is not flushed occasionally, (and certainly some plants more than others), they will exhibit salt burning, etc.

Rusa - do you know the kind of water you've got?  That would be my first suspect.  Can you get like some kind of water filter thing (like a Brita?) to take out some of the bad stuff you might be watering it with....?

Try flushing it real good - meaning - let a slow stream of water (probably doing this in the sink or outside with a hose) trickle into the pot and let the water drain freely out the bottom - I don't know - maybe 15 minutes?  But a real slow trickle...that should grab some of the salts sitting in the soil and take them away....

Maybe worth a try.  You're new growth budding out from the top looks healthy enough........



Fang
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on April 09, 2013, 05:54:37 PM
Low humidity, I meant to say, is not the issue, but dehydration which can come from low humidity and an inadequate amount of water to the roots.  Even with insufficient water to the roots, higher humidity will sustain the leaves for some time longer than if there was no humidity.  Mangoes love humidity and do their most vigorous growing with humidity.  That's what I meant to say.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropicdude on April 09, 2013, 06:31:08 PM
Did you use some kind of fertilizer?  does the water have a lot of chlorine, or other minerals.

try looking at the roots, just turn it over , pull it out, at look at the bottom,  use your nose, also, does it smell nasty?  do you have a lot of roots or almost non at all? 

you may have water storing at the bottom,   

salts and chemicals could cause some leaf burn like that,  my big book on nutritional problems , has leaves that look similar to this on trees with potassium deficiency.

I noticed in the picture you have already lost a couple of leaves at the top, and the tip looks like its also starting to burn.   not looking good for your little tree, but mangoes are tough little buggers.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on April 09, 2013, 07:08:17 PM
agree with william. possible chlorine / fert / salt burn.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Pancrazio on April 09, 2013, 07:12:09 PM
Check the stem where it buries in the soil. Usually watered plants, indoor, stay wet for too long (you know, no wind whatsoever) and this can lead to stem rot under the soil level. After that leaves have problems because the stem doesn't bring there enough water/nutrients. If the entire cambium dies, the plant can live for some time (like a cut flower) but it is practically dead.
Give the plant some fresh air and some more sun as soon as possible. But pay attention when you first expose it to sun, because it may get scorched.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MangoFang on April 09, 2013, 07:12:33 PM
...totally agree with you Harry....


Thirsty Fang
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: digigarden on April 09, 2013, 07:24:36 PM
i remember when i went to canada that indoor plants dried up very quickly...2 waterings a day was not enough,it was incredibly dry and cold...but if it's humid and cold...that's also bad for tropicals.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 10, 2013, 04:43:18 AM
Although bad drainage, excess salts, potassium deficiency, and burying of the root crown are all viable interpretations of the problem, the burn patterns on the leaves and vertical white-covered brown stripe on the stem and white fluff under the leaves appear to indicate Powdery Mildew.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mike T on April 10, 2013, 05:07:03 AM
One problem can have compound effects.Sodium and chlorine are bad news and burnt edges are often a sign of salt problems and this may also influence K availability.K deficiency causes burnt tips.Exces fertilizer application can also burn leaves like that.
The quality of water used and history of fertlizer applied may hold the answer to the problem.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on April 10, 2013, 11:02:40 AM
Ohh wow, that would make sense since indoor temps and humidity would be conducive to PM growth. Good eye.

Although bad drainage, excess salts, potassium deficiency, and burying of the root crown are all viable interpretations of the problem, the burn patterns on the leaves and vertical white-covered brown stripe on the stem and white fluff under the leaves appear to indicate Powdery Mildew.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rusahlynn on April 17, 2013, 12:03:11 AM
Wow, thanks for all the great replies!
We are on well water, so I'm not sure what's all in it, all I know is its very hard, it leaves white deposits everywhere. For example, our kettle will have a solid white layer on the bottom within a day or two after totally cleaning it!
I have never used any sort of fertilizer or anything like that on it, all I do is water it!
I will maybe try "flushing it out" (or whatever it's called!) and see if that helps!
I now have three new leaves (yay!), each about an inch long, and I am keeping a close eye on them for any brownness!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropicdude on April 17, 2013, 02:24:38 AM
Sounds like lime deposits, have you ever checked the Ph of your water? if not try getting one of those Ph kits.  and/or even testing the soil. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: amadioranch on April 17, 2013, 11:03:00 AM
low humidity is a big problem...turns leaves brown.

good luck with your mango!  Youre courageous!

I hear this repeated often....how does that jive with the fact that we grow mangoes with relative success here in Phoenix? Most of the year our humidity levels are below 10%.
 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mario on April 25, 2013, 10:59:11 PM
Anyone knows what might be the cause? The flowers started putting little fruuts but they dried up and turned black
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fruitlovers on April 26, 2013, 12:01:45 AM
Anyone knows what might be the cause? The flowers started putting little fruuts but they dried up and turned black

I guess anthracnose--fungal disease. Spraying with copper usually used to prevent that.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mike T on April 26, 2013, 06:52:12 AM
Sure sounds like anthracnose to me as well.Too much rain or water during flowering and poor nutrition can make it worse.Copper oxychloride and sometimes with a dash of mancozeb is used here.The fungicide treatment can burn the flower and small fruit off as effectively as the disease.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on April 26, 2013, 07:19:14 AM
depending on if there were truly "little fruits", hard to tell without pictures, it could also just be the life cycle of the pannicles without setting any fruit.  Here in SFla, with the extremely late blooms we have had or are getting, a lot of the pannnicles are just frying up/dying with no fruit set whatsoever.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Charlie23 on April 26, 2013, 05:11:47 PM
this happened to my potted carrie too.... of all the pannicles or bloom, only 1 set fruit, and i doubt it'll make it to a full size mango anyway. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Pancrazio on April 28, 2013, 08:58:44 AM
Once more, after the cold winter, my mango starts to bloom. I have removed the first bloom early because panicles growt during winter usually are poor, with deformed ovary, and mostly male. So i removed the panicles when they were very young, too soon before noticing anything strange. I was hoping in an healthy second bloom with more favorable temperatures.
Last year (spring 2012) i got one diseased panicles, apparently one from MMD. I'm not sure because our long cold humid winter surely can give a lot of problem to a plant, so, of course, it may have been just a metabolic disease.  The plant seemed to recover during summer and the growth was normal till now. Now, in the second bloom of 2013, i seem to have spotted some blooms that aren't growing as expected: i'm wondering if someone of our experts can tell me if they are definitively from MMD, because on that cause, i would remove them and prune the twig. They seem to stay on the short side for now, but of course they are still vey small. Maybe i'm still in time for getting another bloom, but temperature are about to rise, and if i'm not quick i'll lose the chance to get some fruit in 2013, and it would be upsetting.

Here some picture of what i'm talking about. Do they seem normal to you?

(http://i.imgur.com/LlHeQ0R.jpg)

(http://i.imgur.com/y3X9bLD.jpg)

(http://i.imgur.com/9DhhOlu.jpg)

In the last picture you can see the panicles low in the twig that have formed a bit earlier, but the seem me more healthy and well formed. Any idea/suggestion? Thank you from an hopeless grower.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: davidgarcia899 on April 30, 2013, 05:52:07 PM
This goes out to all the forum members in Florida who have an Angie planted.

When it comes to mangos my property hates them. Serious I have planted dozens of varieties only to see them die from disease. Only my NDM have grown without any disease problems, although the fruits always crack  >:(. I have a Mallika that is doing okay and same for a San Felipe.

So what are your experiences growing Angie? Is it disease resistant?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on April 30, 2013, 06:07:59 PM
It is very disease resistant....at my house anyway.  But then again, most mango trees do well at my house.  If a mango tree is dying at your house, I would be looking into some sort of soil contaminant, like a petroleum product or such, mangoes don't just die.  Its takes some doing to kill them as long as you provide water.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangokothiyan on April 30, 2013, 09:40:12 PM

Have been trying to get an Angie, but the tree is hard to find.

Apart from Fairchild Tropical Botanic Garden, is there any place where one can buy a 3 gallon Angie? What are the chances of getting one at the mango festival? 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on April 30, 2013, 09:45:05 PM

Have been trying to get an Angie, but the tree is hard to find.

Apart from Fairchild Tropical Botanic Garden, is there any place where one can buy a 3 gallon Angie? What are the chances of getting one at the mango festival?

They are good if I don't buy them all the day before and you can beat sleepdoc in a 400 meter sprint.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: davidgarcia899 on April 30, 2013, 10:16:33 PM
It is very disease resistant....at my house anyway.  But then again, most mango trees do well at my house.  If a mango tree is dying at your house, I would be looking into some sort of soil contaminant, like a petroleum product or such, mangoes don't just die.  Its takes some doing to kill them as long as you provide water.

They don't die immediately, they get diseased and slowly die,
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on April 30, 2013, 10:19:31 PM
Diseased how?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 01, 2013, 12:32:22 AM
normal blooms
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: davidgarcia899 on May 01, 2013, 12:38:09 AM
I am pretty sure it some sort of fungus. It looks like anthracnose the only difference is that the leaves eventually begin to turn brown and brittle staring around the edges and then the stem begins to die until it burns all the way down
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on May 01, 2013, 07:02:57 AM
Are you sure you had malformation on any part of the plant in the past?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: johnb51 on May 01, 2013, 09:14:34 AM
I am pretty sure it some sort of fungus. It looks like anthracnose the only difference is that the leaves eventually begin to turn brown and brittle staring around the edges and then the stem begins to die until it burns all the way down

I wonder if the Fairchild, UF, or USDA people down your way could help you determine what the problem is.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: davidgarcia899 on May 01, 2013, 09:45:17 AM
Are you sure you had malformation on any part of the plant in the past?

sorry rob what do you mean?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tim on May 01, 2013, 11:11:37 AM
I believe BSbullie was addressing Pancrazio's post prior to my merging of the two topics.

Are you sure you had malformation on any part of the plant in the past?

sorry rob what do you mean?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on May 01, 2013, 01:29:24 PM
I believe BSbullie was addressing Pancrazio's post prior to my merging of the two topics.

Are you sure you had malformation on any part of the plant in the past?

sorry rob what do you mean?
Tim is correct.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Pancrazio on May 01, 2013, 06:28:42 PM
normal blooms

Thank you very much Har. Too bad, i was really paranoid about this mango malformation disease, and pruned the two terminal twig away yesterday. :(
Now i'm a bit on the sad side.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Doglips on May 06, 2013, 07:18:03 AM
After seeing how the Mango Whisperers are able to diagnose nutritional problems I started looking around the net.  There are many sites that help you do this, but this seems to be one of the better ones, the flow charts are great, and learning about mobile and immobile nutrients was the real a-ha moment for me.

http://landresources.montana.edu/NM/Modules/Module9.pdf (http://landresources.montana.edu/NM/Modules/Module9.pdf)

It was designed for grain crops (I don't think they grow many tropicals in Montana). I think that the core symptoms should apply to most any plant.  It doesn't cover pH lockout and many nutrient toxicities but it is still good.  Multiple deficiencies can really muddy the water.

It does seem like the easiest solution is to fertilize with major-minors-micros for most nutrient problems (defiencies at least).
 
I've been Fe and Mn dosing a couple of plant after reading this, I think I am have some success.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mario on May 06, 2013, 01:31:52 PM
Has anyone here fertilized with the potash 0-0-51? Have you gotten noticeable results?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: edzone9 on May 06, 2013, 06:15:19 PM
Hello members;

I Have a Nice Carrie Mango Tree That is Blooming , I noticed little black dots on some of the green leaves , not on the blooms , Can I Spray the entire with Copper spray including the Blooms , Or Should i spray the entire tree with Neem Oil ?

If i have to spray with either , how often do i have to spray ?
Its my 1st Mango Bllom ;).
Thank You Ed.

(http://s11.postimg.cc/y94lhfl4v/IMG_20130504_192806_609.jpg) (http://postimg.cc/image/y94lhfl4v/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: natsgarden123 on May 06, 2013, 07:04:22 PM
this looks healthy to me ...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: edzone9 on May 06, 2013, 07:08:51 PM
Thank You , But i spotted some small rounded black spots on some leaves , i just want to prepare incase its a fungus .

What works better on Mangos , Neem Or Copper ?
Thank You Ed.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on May 06, 2013, 07:36:17 PM
While it is hard to say for sure without a close up picture, most likely its anthracnose which you would treat by spraying the entire tree with copper fungicide.  In any event, especially with the rains we/you have had, the blooms should be sprayed with copper to help prevent anthracnose/bloom rot on the blooms which will help or increase the chances of fruit set.

I would not spray neem.  Be very careful with spraying oils.  They CAN have their place but I feel they are way overused as a cure all.  In fact, if sprayed at the wrong time of day or under the wrong conditions, you could actually do harm to the tree.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: edzone9 on May 07, 2013, 05:19:39 PM
Thanks Rob I Appreciate Your Help !
Will Spray Copper !

Ed.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: TnTrobbie on May 14, 2013, 11:03:18 PM
Would tipping new mango flushes that haven't hardened yet but fully formed make it succeptable to disease or problems? Any adverse effects from tipping or pruning when a tree has fruitlets forming?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: VentureRider on July 03, 2013, 07:46:40 PM
I have a Baileys Marvel mango that is approx. 3 years old...one year in my yard.

At times, it has lots of new growth...but after about a week,  the buds/leaves/new growth begin to turn black, then shrivel up and die.

I've included 4 pics showing the various stages of the new growths "demise".

Following the advice of a gardening center, I've applied 3 doses of Dithane-M45 (once a week for three weeks)...and things seem to clear up.

This happens every time there is a new flush of growth...not ALL of the new growth dies off, probably 30% dies, but the rest remains healthy looking.

Any suggestions or assistance would be greatly appreciated!
(http://s14.postimg.cc/jyftr949p/IMG_2059.jpg) (http://postimg.cc/image/jyftr949p/)

(http://s14.postimg.cc/5hskcoesd/IMG_2060.jpg) (http://postimg.cc/image/5hskcoesd/)

(http://s14.postimg.cc/881w9vbh9/IMG_2184.jpg) (http://postimg.cc/image/881w9vbh9/)

(http://s14.postimg.cc/ixfl24na5/IMG_2185.jpg) (http://postimg.cc/image/ixfl24na5/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: y0rascal on July 03, 2013, 08:05:59 PM
not an expert, but based off of dr. Campbells tipping and pruning tips, he says after your harvest and or flowers, to remove the spores because it can carry disease into the tree. based of his video, he just tips the ends. I did this with my spirit of 76 which hasn't fruited but flowered. I tipped them all and now have new growths off all the stems.

check out his video on youtube, something like pruning after harvest
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DuncanYoung on July 03, 2013, 09:07:29 PM
Might be mango die back.  Usually a fungal infection.  Copper spray should help along with a good nutritional program, especially one that includes the use of the minor elements, iron, zinc, manganese and boron.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: VentureRider on July 06, 2013, 11:58:33 AM
Thanks for the advice!

I have been using Sunniland 6-4-6 fertilizer.  Is there a "better" fertilizer for mangos?  I made a trip to Home Depot and a local nursery looking for something 0-0-22...but no luck.  :(

In terms of fungicide...should I be spraying the tree at the first sign of new growth...or should I wait a couple of days, then spray?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on July 06, 2013, 01:10:34 PM
I have absolutely no idea what disease your mango has.  Regretfully, if it was in my yard, I would destroy it and start over.  It really looks scary and contagious.  Have you other mango trees nearby?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropicdude on July 08, 2013, 09:44:16 PM
Venture,  If you want to give your tree one more chance before yanking it, you can pug it,  and remove all the leaves.  if the new stuff comes up the same,  destroy it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: VentureRider on July 09, 2013, 12:48:55 PM
I have absolutely no idea what disease your mango has.  Regretfully, if it was in my yard, I would destroy it and start over.  It really looks scary and contagious.  Have you other mango trees nearby?
I've a Zill approx 20' to the east...and it is doing just fine...no symptoms like the Bailey's....

It looks like the Bailey is going to put out some more leafs/growth in the next week or so...I'm going into a holding pattern, since I just completed the 3rd spray of Dithane-M approx 10 days ago.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropicdude on July 09, 2013, 03:46:25 PM
The reason I mentioned removing the leaves, was to prevent any possible contamination to the new leaves.  if you pug and remove all leaves, you kind of remove any "food source" if its a bacteria, bug or fungus. and prevents it spreading to the new growth.
on the other hand if its a virus, than its probably a gonner.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: y0rascal on July 09, 2013, 03:49:24 PM
When i see the darkness on the branches or leaves, /I cut it to avoid the infection/fungus/bacteria from spreading.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MarinFla on July 09, 2013, 08:09:58 PM
The reason I mentioned removing the leaves, was to prevent any possible contamination to the new leaves.  if you pug and remove all leaves, you kind of remove any "food source" if its a bacteria, bug or fungus. and prevents it spreading to the new growth.
on the other hand if its a virus, than its probably a gonner.
Removing the leaves won't help. That black stuff actually starts at the base of the new twig growth and spreads its way up to the leaves and causes the leaves to die then the twig follows. It almost looks like a black shellac coating.  I have this going on with a seedling that I am growing. I had initially thought it might be due to damage I caused to the tap root when I transferred  to a bigger pot. It did improve a bit when I fertilized it. I have it on the side of my house away from my other trees and I will let nature take its course. We'll see how it goes. It had a nice growth flush at the end of May and it did well. Then I noticed it happening again a few weeks ago. None of my other trees have had anything like this so it my not be contagious. Somewhere up this thread are the pictures I posted of the same mystery disease.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: VentureRider on July 11, 2013, 11:42:26 AM
Removing the leaves won't help. That black stuff actually starts at the base of the new twig growth and spreads its way up to the leaves and causes the leaves to die then the twig follows. It almost looks like a black shellac coating.  I have this going on with a seedling that I am growing.  We'll see how it goes. It had a nice growth flush at the end of May and it did well. Then I noticed it happening again a few weeks ago. None of my other trees have had anything like this so it my not be contagious. Somewhere up this thread are the pictures I posted of the same mystery disease.

What fungicide have your sprayed on your tree?  I've been using Dithane-M45, once a week for three weeks.  It appears that in the next week or so, I'l be getting a lot of new leaves....if they start to appear sickly, I'm going to spray with Copper fungicide to see if it makes any difference.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MarinFla on July 11, 2013, 07:56:53 PM
I have been using a mixture of insecticidal soap, copper and dynagrow foliage pro
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: TnTrobbie on July 18, 2013, 03:28:53 PM
Any idea what this is? My Philippine mango tree. Applied foilar spray with Sequestrene (1st time incorp'd to the mix) to all my trees on the 1st of July. This is the only tree that had problems. It's in a pot.

It started off developing like this 10 days after the spray:
(http://img856.imageshack.us/img856/225/mltq.jpg) (http://imageshack.us/photo/my-images/856/mltq.jpg/)
(http://img703.imageshack.us/img703/9020/2uwe.jpg) (http://imageshack.us/photo/my-images/703/2uwe.jpg/)

15 days after spray:
(http://img833.imageshack.us/img833/989/9cbu.jpg) (http://imageshack.us/photo/my-images/833/9cbu.jpg/)

Fert burn?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on July 18, 2013, 04:17:00 PM
Yep....I would say that the sun and mix you sprayed conspired to do this.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on July 18, 2013, 07:23:01 PM
What else was in your foliar mix? Urea?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: TnTrobbie on July 18, 2013, 08:46:36 PM
 ;D No. Just Southern AG Foilar (2Tbs/ gal) and Sequestrene (1Tbs from dissolving 1Tbs/1000ml). My other potted trees (Fernandin and Dupuis) didn't show any such burn. Same sun exposure length and I sprayed at sun set.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Doglips on July 23, 2013, 12:55:18 AM
New growth dieback can be a lack of calcium or boron.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: jc on August 13, 2013, 09:26:04 AM
This is a new shoot on my Dot tree. All the margins on this shoot appear to be doing the same thing. Any suggestions as to the cause of this symptom?  It is otherwise a very healthy and rapidly growing tree.
(http://s11.postimg.cc/3w48rj1en/image.jpg) (http://postimg.cc/image/3w48rj1en/)

(http://s11.postimg.cc/maervidpb/image.jpg) (http://postimg.cc/image/maervidpb/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 13, 2013, 10:57:24 PM
good pictures.  They have me stumped.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on August 14, 2013, 08:06:32 AM
This is a new shoot on my Dot tree. All the margins on this shoot appear to be doing the same thing. Any suggestions as to the cause of this symptom?  It is otherwise a very healthy and rapidly growing tree.
(http://s11.postimg.cc/3w48rj1en/image.jpg) (http://postimg.cc/image/3w48rj1en/)

(http://s11.postimg.cc/maervidpb/image.jpg) (http://postimg.cc/image/maervidpb/)

Growing mangoes in Florida in the summertime, at least, is a very forgiving task.  Occasionally, you will see some things that are not explicable...at least not by me (and apparently I am in good company...with Har). Most of these conditions seems to be temporary and the tree seems to forget about whatever funky thing the last set of leaves wanted to do.  I'd do nothing with this and wait to see how the next flush or two do. If it continues, then you might have something that needs addressing.  But, I'll be that your next flushes may be normal.  Let's wait and see.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: jc on August 14, 2013, 12:03:12 PM
Har and Harry,

Thanks for the attempt. I'm not really concerned, just curious at this point.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mucbean on August 27, 2013, 07:45:42 PM
Does anyone know what is causing this on my mango tree. It looked fine(except for the browning of the leaves at the bottom) a week ago. I'm not sure what type of mango tree it is, it was given to me by a vietnamese friend of mine.
Thanks,
Mike

(http://s9.postimg.cc/6m3vwt4nv/Mango1.jpg) (http://postimg.cc/image/6m3vwt4nv/)

(http://s9.postimg.cc/71f5ptql7/Mango2.jpg) (http://postimg.cc/image/71f5ptql7/)

(http://s9.postimg.cc/kttklghcr/Mango3.jpg) (http://postimg.cc/image/kttklghcr/)

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 28, 2013, 09:34:41 PM
Likely to be powdery mildew or anthracnose, and the condition was probably contributed to by wind damage when the new leaves were at their most tender stage.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoprofessor on August 29, 2013, 04:10:09 PM
There are many different problems people have asked questions about through the course of this thread. 

The first one was regarding what appears to be some kind of egg cases on a mango plant.  I also noted that in the close-up pictures, it looked like some of the egg cases may have already hatched out.  Before applying any kind of spray I think it is important to determine: is it friend or foe?  Since no one seemed to recognize what was in the picture, I suggest the following course of action.  Get a one quart canning jar (a clean Classico spaghetti sauce jar will do nicely).   Pick up some plastic window screen scraps from your local hardware store.  Carefully remove some un-hatched egg cases and deposit them in the canning jar.   Screw on the canning jar screw cap, minus the lid and some place where you won't forget it or the sun won't cook it.  Watch and see what hatches.  If they are a friend of the garden, release them.  If they are a pest, add a little dish soap, fill with water and dump them down the drain. 

As for the fungal diseases, where there is a minor infection use Kop-r spray.  For more severe infection, like the nasty looking black one,  I suggest cutting the tree back to healthy material and discarding the infected part in the trash or burn it.  Make sure the clippers are then disinfected with Clorox so you don't  transfer the problem to other plants.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Triloba Tracker on September 08, 2013, 03:15:26 PM
Wanted to share some pictures of our little Cogshall and see if anyone has any thoughts.

We bought it in June from Excalibur and brought it back to TN with us.  It's still in the same pot and has been outside in as much sun and heat as we can provide it.  On cooler nights we've been bringing it in. 
I have been watering it only sparingly, and it does drain well.  We pugged it about 2-3 weeks ago.

This first picture is of the tip of the tree where we cut it, and you can see the sort of necrotic section at the top.  I'm assuming this is okay, as it does appear that the leaf nodes directly below it are bulging somewhat with what I hope is future branching.

(http://s8.postimg.cc/ns5niynr5/IMG_0055.jpg) (http://postimg.cc/image/ns5niynr5/)

My second concern is some of the newer leaves, which have some holes and in some cases have just died back by about 50%


(http://s22.postimg.cc/vl1ogjou5/IMG_0053.jpg) (http://postimg.cc/image/vl1ogjou5/)

Lastly, some of the older leaves have small black spots, but they haven't seemed to spread or get bigger.  Anything to worry about?

(http://s23.postimg.cc/4emjkrox3/IMG_0054.jpg) (http://postimg.cc/image/4emjkrox3/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 08, 2013, 10:58:47 PM
The third picture shows Mango Bacterial Leaf Spot, probably from too-wet conditions back at the nursery.  Keep the leaves from staying wet for many hours, and the infection is not likely to spread much.  When the leaves get old, or when there is plenty of new growth to sustain the plant, dispose of the contaminated leaves.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Triloba Tracker on September 10, 2013, 12:01:28 PM
The third picture shows Mango Bacterial Leaf Spot, probably from too-wet conditions back at the nursery.  Keep the leaves from staying wet for many hours, and the infection is not likely to spread much.  When the leaves get old, or when there is plenty of new growth to sustain the plant, dispose of the contaminated leaves.

Thank you so much!

One other question, out of curiosity.  The third picture I posted above also shows some pale speckling on the mature leaves.  I would almost call it iridescent - it sort of shimmers or changes colors as you move the leaf around in the sun. It almost looks like a residue of something, but I've never sprayed anything on the leaves.

Anything to be worried about?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on October 11, 2013, 08:14:13 AM
My Cogshall has recently shown sooty mold growth on many of its leaves.  It's my understanding sooty mold is a result of white fly infestation, as well as aphids.  But an inspection hasn't revealed the presence of either pest.  What are other possible causes?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: phantomcrab on October 11, 2013, 09:17:02 AM
I have noticed it on my Maha's interior leaves but not on any other trees.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 11, 2013, 11:02:04 PM
Mealy bug and scale also produce honeydew which black sooty mold grows on.

In several cases, I have not found a culprit, but sooty mold can be visible for months after the pests are gone.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 11, 2013, 11:06:23 PM
Mineral deposits from water can sometimes be iridescent when still very thin.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on October 12, 2013, 05:06:42 PM
Mealy bug and scale also produce honeydew which black sooty mold grows on.

In several cases, I have not found a culprit, but sooty mold can be visible for months after the pests are gone.
What do you recommend for treating either or both of these pests?  I have a bottle of Southern Ag Parafine Horticultural Oil.  But my concern is the label says not to use after October 1 in Florida.  I'm surprised.  Can someone tell me why?  Thank you.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangaba on October 12, 2013, 09:26:11 PM
 I have a mango tree in my garden where most of the mangos show this change in pulp.  Is this a  nutritional problem ? What corrective measure would be advisable?

(http://s22.postimg.cc/722rlvn99/doen_a_manga_005.jpg) (http://postimg.cc/image/722rlvn99/)

                       
              Thank you in antecipation
                                                                          mangaba
               
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bangkok on October 15, 2013, 08:52:59 AM
moved
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on October 15, 2013, 12:34:12 PM
I have a mango tree in my garden where most of the mangos show this change in pulp.  Is this a  nutritional problem ? What corrective measure would be advisable?

(http://s22.postimg.cc/722rlvn99/doen_a_manga_005.jpg) (http://postimg.cc/image/722rlvn99/)

                       
              Thank you in antecipation
                                                                          mangaba
             

What kind of mango is is this?  Has it fruited before with a different looking interior?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 15, 2013, 08:03:46 PM
Mangaba,

What kind of soil is your tree growing in?  What kind of fertilizer have applied?
A good mix containing lots of Potassium, Magnesium, Zinc, and Boron, usually along with several other elements, should probably be applied to the ground, under the tips of the branches.  Lime or Gypsum, for Calcium, should also be applied.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 15, 2013, 08:07:43 PM
Carbo,

Oil sprays, applied two weeks or so before cold weather, increases many plants susceptibility to cold damage.  But that 1 Oct cut-off date sounds appropriate to Zone 9b!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on October 15, 2013, 08:51:41 PM
Carbo,

Oil sprays, applied two weeks or so before cold weather, increases many plants susceptibility to cold damage.  But that 1 Oct cut-off date sounds appropriate to Zone 9b!
Thanks, Har.  If that is Southern Ag's reasoning, then it really has no bearing for those of us here in southeast FL.  I should be good to go this weekend.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: nch on October 22, 2013, 12:27:27 AM
I am sorry if my question has been asked and answered before, but I am overwhelmed with all the reading about mango diseases and sprays, I need a short cut. I just bought a Mallika mango, and some of the leaves have brown edges with some greasy stuff on them on the underside. It's too dark to go take pictures right now, but if needed, I'll take some tomorrow. Not knowing any better, I did cut off the worst ones and threw them away yesterday. I didn't realize they could be a sign of something really bad.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on October 22, 2013, 08:18:13 AM
Mangoes don't necessarily require spaying to grow and be productive.  Cutting off the diseased leaves was not a bad thing....except for diagnosing the problem.  Keep the tree well watered and give it a very light balanced fertilizer (time release is good). Make sure the fertilizer has minor elements.  And I repeat.......light on the fertilizer.  If the problem comes back take pictures and re-post.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: nch on October 22, 2013, 12:04:23 PM
Thank you Harry for answering. It's good to know that mangoes don't require spraying to grow. Here are some pictures I just took. The fungus under the leaf is new to me. The new leaves are not affected, at least to my newbie eyes.[imghttp://(http://i1318.photobucket.com/albums/t651/achoi45/DSCF7710_zps334f1a4f.jpg) (http://s1318.photobucket.com/user/achoi45/media/DSCF7710_zps334f1a4f.jpg.html)(http://i1318.photobucket.com/albums/t651/achoi45/DSCF7713_zps36a0ae3a.jpg) (http://s1318.photobucket.com/user/achoi45/media/DSCF7713_zps36a0ae3a.jpg.html)(http://i1318.photobucket.com/albums/t651/achoi45/DSCF7714_zpsd67f1725.jpg) (http://s1318.photobucket.com/user/achoi45/media/DSCF7714_zpsd67f1725.jpg.html)][/img]
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on October 22, 2013, 07:53:50 PM
The one burnt leaf looks similar to fertilizer burn, but the other leaves look healthy and you're growing in a completely different climate than me. It also looks like there may be some premature leaf drop on the trunk, which could also be a sign of either fert burn or lack of water. Mangoes can be very sensitive to over fertilization.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: nch on October 22, 2013, 08:44:40 PM
Thank you, Cookie Monster. As for the fungus under the leaves, is it something to worry about?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on October 22, 2013, 09:23:52 PM
Is it fungus underneath or scale insect.  From the picture it is hard to tell.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: nch on October 22, 2013, 09:28:57 PM
Harry, it is fungus. It was very visible in the morning when the leaves were covered with dew, but at noon time, when the leaves were dry, I could barely see it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on October 22, 2013, 11:02:33 PM
My thought was that the fungus was a symptom rather than a cause of the problem -- simply taking advantage of the burnt margins to feast a little.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 22, 2013, 11:06:16 PM
Powdery mildew, active
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: nch on October 22, 2013, 11:08:37 PM
Thank you Jeff and Har. I'll just try to keep the leaves dry.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pominasia on November 18, 2013, 12:55:36 AM
Anyone have any what is attacking this mango tree ?  Note that I live in Thailand. 

(http://s10.postimg.cc/x4i7iyx6d/IMG_1240_mango.jpg) (http://postimg.cc/image/x4i7iyx6d/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bangkok on November 18, 2013, 08:11:01 PM
The older leaves look fine and i see new flushings are coming. I don't know what you fed them or sprayed in the garden? I use fruitbags if i want to protect new flushings (for my grafts) against insects.

I think it is not a serious problem.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 18, 2013, 08:36:56 PM
Powdery Mildew.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: edzone9 on December 01, 2013, 11:14:21 AM
Hello Gang ;

My Lemon Zest Mango tree leaves appear to be semi shriveled .
My other mango trees leaves are all normal with no leave shrivel.
is this normal for the LZ or is it sick ? , if so can I bring it back o should I pull it out of the ground ?
Should I PUGG it ?

Thanks Ed..


(http://s24.postimg.cc/7f87uozup/LZ_2.jpg) (http://postimg.cc/image/7f87uozup/)

(http://s23.postimg.cc/g17ckr3cn/LZ_Mango.jpg) (http://postimg.cc/image/g17ckr3cn/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on December 01, 2013, 11:38:23 AM
I'm not a mango kinda of guy but am pretty good at reading plants, so, if I had to take an educated guess your (minor) leaf cupping is due to the natural characteristics of your cultivar OR you have a root system problem.  Leaf cupping, leaf tip margin roll, shriveling, etc. are a response to moisture stress, an imbalance in tissue water turgor.  That can be caused by a root system that is shot (over watering, soil rots, etc.) or inadequate watering, OR, too much plant food.

Your tree looks pretty damn healthy to me.  I have a newly planted Mallika that has more upward leaf margin cupping than yours.  I know the root system is fine so I'm gonna chalk it up to the "way of the world".  :)

Topping it isn't gonna solve anything.  All that's gonna do is create a tree with a shorter profile and more branching.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: edzone9 on December 01, 2013, 11:47:06 AM
Thanks Mark , I will monitor it ..

Thanks again Ed..
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: murahilin on December 01, 2013, 11:59:43 AM
That looks like the normal growth habit of the Lemon Zest leaves to me.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: edzone9 on December 01, 2013, 12:13:08 PM
Thank you...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 02, 2013, 10:53:45 AM
I don't see anything worrisome.

If the soil doesn't have much Calcium, you might give it some Gypsum (Calcium sulfate) to make the plant sturdier.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: noneof on February 20, 2014, 04:53:25 PM

(http://s28.postimg.cc/n4cbhqusp/DSC01673.jpg) (http://postimg.cc/image/n4cbhqusp/)

(http://s8.postimg.cc/x8cg0wo8x/DSC01678.jpg) (http://postimg.cc/image/x8cg0wo8x/)

can anyone help me with this problem, about 5 month old mango started from seed. in miracle grow soil. started turning brown about 1 1/2 months ago. also have smaller mango tree starting with same issue. in los angeles, night temps at 50 degrees. days about 75.  I water only when dry. thanks in advance.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MangoFang on February 20, 2014, 04:59:19 PM
My guess would be fertilizer burn (maybe even in the miracle grow mix -
get rid of it and just use some "normal" potting soil, maybe) or a LACK
of water....how often do you water it?

If you planted it in the ground there is much less chance of these kinds of
things happening.....


Gary
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: noneof on February 20, 2014, 05:07:59 PM
only reason I don't put in the ground yet is cause I heard small mangos cant handle 40 deg. night temps. so when we do get 40's I bring them inside. I was gonna wait till they are atleast 2 years to put into the ground. but I think I will change the soil. no nutes and more sand? is this plant gone, or do you think she can pull through? thanks
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: noneof on February 20, 2014, 05:10:15 PM
I water when top couple inches of soil is dry. and feel the weight of the pot.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: noneof on February 20, 2014, 05:13:44 PM

(http://s13.postimg.cc/9a7clwsar/DSC01679.jpg) (http://postimg.cc/image/9a7clwsar/)
 I also have this avocado this is showing kind of the same issues. about 1 1/2 years old but is in kellogs patio plus soil. the difference with this avocado is it is still showing new growth.and mangos have stop growing new leaves.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MangoFang on February 20, 2014, 05:17:40 PM
Yep - another one - same advice as for the mangoes.  Whatever you're doing with them
in pots will be significantly harder to do to them in the ground....

Gary
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: nch on February 20, 2014, 05:55:03 PM
What are those brown specks on your mango leaves? Soil or some kind of pests?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on February 20, 2014, 06:14:42 PM
I'm thinking you need to be generous with your water.  Miracle Grow soil drains well as long as there is a hole in the bottom of the pot. There may be other issues, but I would think watering more will be helpful.  I would not let the soil dry out completely before watering.  And BTW, I think mango seedlings do fine is 40 degree temps.  They're fine down to frost/freezing temps.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: noneof on February 20, 2014, 07:06:58 PM
lil spots on the small plant is just dust, its been real windy here. I just watered and the runoff came out real yellow so I watered for awhile till water was clear. crossing my fingers. and if my plant recovers I will put in the ground asap. thanks to all for advice.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 20, 2014, 07:35:28 PM
Check for white spores early in the morning after a cool (less than 77 degrees), humid night.

Your mango and avocado may have powdery mildew.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoprofessor on March 08, 2014, 12:31:14 PM
Re: question of the burnt mango leaf margins.  I agree with the person who posed:  forget the miracle grow potting mix.  That mix is too hot, meaning too much fertilizer in the potting mix.  That mix also does not have enough sand for good drainage.  Young mango plants can be burnt or killed with commercial fertilizer that have too much nitrogen too.  Stick to an organic potting mix with at least 40% sand for good drainage.  With that kind of mix, good watering shouldn't be a problem.  For watering, go light in cool weather but give the plant plenty of water during hot Summer weather.  A trick that I use for large mango trees in a pot, 15 gallon size.  Picture below, note the blossom panicles.

(http://s18.postimg.cc/a3ojs8dg5/Mango_in_pot_A.jpg) (http://postimg.cc/image/a3ojs8dg5/)

Put the pot in a basin that you can pick up at any nursery. During the Summer or hot weather, watch the basin.  When the basin dries out, it is time to water again.  Picture of basis at bottom of pix.

(http://s4.postimg.cc/okwo0xkhl/Mango_tree_basin_A.jpg) (http://postimg.cc/image/okwo0xkhl/)


Mango Professor




Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 08, 2014, 02:42:27 PM
Add BTi to basin to avoid raising mosquitoes.  (Mosquito Dunks, Mosquito Bits, etc)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mikesid on March 23, 2014, 02:06:18 PM
Here are some pics from 3 mango trees I have showing some deficiency. I have applied a Sequestrene Fe drench approximately 3 weeks ago. I also did a micro nutrient drench right before that using Brandt Biomaster. However I have not done foliar spray yet of either. I have not seen any improvement after the drenches.  Could it be a Zn or Manganese deficiency?

PPK

(http://s18.postimg.cc/83lhawjbp/IMG_0540.jpg) (http://postimg.cc/image/83lhawjbp/)

Lemon Zest (my larger Lemon Zest tree leaves are normal)

(http://s11.postimg.cc/453khzpcf/IMG_0541.jpg) (http://postimg.cc/image/453khzpcf/)

Coconut Cream


(http://s4.postimg.cc/a28pt51l5/IMG_0542.jpg) (http://postimg.cc/image/a28pt51l5/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on March 23, 2014, 02:15:07 PM
I would cut the trees down and plant 3 Tommy Atinks in their place.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: jc on March 23, 2014, 03:42:39 PM
It's definitely Rob! 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 23, 2014, 06:11:10 PM
Manganese deficiency.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mikesid on March 23, 2014, 07:04:01 PM
Manganese deficiency.
Thanks Har! although there is some manganese in the brandt biomaster it may not be enough to correct the problem by itself?? maybe I should ad a manganese chelate to the regimen for these trees..
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on March 23, 2014, 08:02:15 PM
What are you watering with? Well water? Maybe sacrifice the sod for mangoes.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mikesid on March 23, 2014, 08:26:47 PM
What are you watering with? Well water? Maybe sacrifice the sod for mangoes.
I've been using city water until I get my irrigation pumped replaced..usually it draws from the canal behind the house
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropicalgrower89 on March 23, 2014, 08:39:52 PM
City water tends to be very alkaline and contains chlorine. I think that's your problem.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on March 23, 2014, 09:58:29 PM
yah, unless you have some unique soil situation, you should have deep sand (~neutral ph) in boynton beach. So, the manganese deficiency would presumably be from an alkaline water source.

I completely nixed (mulched over) about 90% of my grass and turned off all irrigation (both to the chagrin of the homeowner's association :-). The little patch of grass in the front yard starts looking brown during the spring, but my mangoes are happy, and that's all that counts ;-).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fruitlovers on March 23, 2014, 11:09:53 PM
I think that is PM, powdery mildew, on your flowers. If so copper sulfate spray should help.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangomandan on March 25, 2014, 09:34:59 AM
Others could speak to this better,  but I think that it takes a good while for the leaves to show improvement, after you apply minerals. I'm not even sure that the older leaves will always improve.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mikesid on March 25, 2014, 09:41:23 AM
Others could speak to this better,  but I think that it takes a good while for the leaves to show improvement, after you apply minerals. I'm not even sure that the older leaves will always improve.
I was wondering this myself...maybe only the new growth shows the improvement?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: NaturalGreenthumb on March 27, 2014, 06:07:46 PM
Can someone please help me identify the problem with my mango.

There are these  burnt scaring appearing on my mango tree leaves.

Tomatayo and keitt mango leaves.

Is there a solution for this problem?

(http://i967.photobucket.com/albums/ae156/yellowbrickroad_54/b31aa12afa0cf6f35bea167730c4d4df_zpsc1b7c1da.jpg) (http://s967.photobucket.com/user/yellowbrickroad_54/media/b31aa12afa0cf6f35bea167730c4d4df_zpsc1b7c1da.jpg.html)

(http://i967.photobucket.com/albums/ae156/yellowbrickroad_54/9b623090b45a730a0587577811b308f0_zps2d4da25d.jpg) (http://s967.photobucket.com/user/yellowbrickroad_54/media/9b623090b45a730a0587577811b308f0_zps2d4da25d.jpg.html)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangomanic12 on March 27, 2014, 06:22:35 PM
Bad water - just my guess. At least it still looks good and not dying. ;)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangomaniac2 on March 27, 2014, 07:25:20 PM
I would say salty water as well. We in Phoenix know what that's about.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: NaturalGreenthumb on March 28, 2014, 10:13:17 PM
I think I have an answer to my own problem and I think it's fertilizer burn.

You know moderators.

You should consider havering certain subjects as a sticky so people don't have to search for it.

I.e. fruit diseases and in the subcategory have mango, orange, longan....etc...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 28, 2014, 10:55:15 PM
Have you sprayed lately, such as with oil or soap?  It looks as though something settled on the lower parts, dips, of the leaves.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: NaturalGreenthumb on March 28, 2014, 11:07:50 PM
Have you sprayed lately, such as with oil or soap?  It looks as though something settled on the lower parts, dips, of the leaves.

No no spraying oil or soap.

I did fertilize it with hydroponic nutrients.

I've seen fertilizer burn before and they generally start at the leaf tip and move inward but not in sections like this.  Most of the main Vaines are undamaged.


It's either fertilizer burn that I have not seen before or it's sun burn.

I don't know what else.

Anyone?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mangosurf on April 03, 2014, 04:58:05 PM
This is a sad story but I planted some mango trees at my Dad's house and they were doing fine until I left to study abroad. Since the 2 years I have been gone 4 trees have died and the 2 trees shown below will be the fifth and sixth if I can't figure out how to save them. The trees seem to be doing fine, then some just suddenly get stiff leaves that continue to shrivel up and fall off, plus turning either red (like rust) or showing large black and gray spots, with the tree eventually dying. He lives about 3/4 mile from the ocean, and in an old avocado grove, so the soil is sandy, good draining "brown sugar".  I don't think  they are overwatered since they were watered about every 10 days this winter when it has been sunny and hot, and about every 2-3 weeks when it has been cool.  There is a gopher problem, but the trees were planted in 1" poultry net baskets. The trees have been sprayed several times--first with greenlight fruit tree spray, then neem oil, then finally with Captain Jack dead bug, and he's about to try copper fungicide. I don't know what advice to give him since I am thousands of miles away, can anyone please help?

Sweet Tart Mango

(http://s18.postimg.cc/im306d3kl/leaf_damage_Ong.jpg) (http://postimg.cc/image/im306d3kl/)


(http://s3.postimg.cc/xjm8151wf/leaf_damage_Ong2.jpg) (http://postimg.cc/image/xjm8151wf/)


Coconut Cream Mango

(http://s29.postimg.cc/h5owpreur/leaf_damage_coconut_cream.jpg) (http://postimg.cc/image/h5owpreur/)

mod edit: Please don't post in caps.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: nullzero on April 03, 2014, 05:34:52 PM
Looks like salts/fertilizer burn, or possibly burn from neem oil on the plant. Might be an issue of doing too much to the trees and poor quality water. The trees don't look like they may survive, if they do I am sure the trees will be stunted.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mangosurf on April 03, 2014, 06:19:51 PM
I agree it seems like fertilizer burn in combination with neem oil burn.  I didn't recommend all the chemicals I think he panicked when the trees started to decline. The trees are pretty much gonners  :( I just suggested to water the trees more often like 1-2 times per week and make sure there is a 6in think layer of mulch with a 2-3ft radius around the trunk of the tree. Also give the trees some fish fertilizer every other week. Is there anything else that could help at this point?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gunnar429 on April 03, 2014, 07:11:13 PM
sadly, i think they need a mango priest for last rites. sorry to hear!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Patrick on April 03, 2014, 07:13:58 PM
http://youtu.be/WChTqYlDjtI (http://youtu.be/WChTqYlDjtI)

Looks like missed waterings and a lot of over love.. May they rest in peace...  :'(
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gunnar429 on April 03, 2014, 07:18:44 PM
classy, patrick!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: simon_grow on April 03, 2014, 07:21:02 PM
Yup agree, looks like fertilizer burn, or something with the roots. Did you gradually adapt the tree to full sun? Also, newly planted young trees may need more frequent waterings during the establishment period. Did your dad happen to let any of the trees hold fruit?
Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mangosurf on April 03, 2014, 07:33:39 PM
Simon,

None of the trees held fruit. I am baffled at how these trees keep dying. I was home for Christmas and they looked healthy and were pushing growth. I am shocked to see the condition they are in now and am trying to figure out how it happened.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: nullzero on April 03, 2014, 08:22:06 PM
I suggest starting over, this time work on amending the soil. Build it up with good compost and organic matter. Then plant next spring after some good rains. Try to water in the areas with none chlorinated water from now until planting.

Want to focus on building up earth worms, soil humus, and beneficial microbes. While doing this flushing the salts and excess fertilizer in the areas.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: ClayMango on April 03, 2014, 08:36:11 PM
http://youtu.be/WChTqYlDjtI (http://youtu.be/WChTqYlDjtI)

Looks like missed waterings and a lot of over love.. May they rest in peace...  :'(


I salute you Patrick for the great "reveille" tribute to the fallen Mango trees. One of the highest Honors of tribute!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Patrick on April 03, 2014, 08:42:58 PM
http://youtu.be/WChTqYlDjtI (http://youtu.be/WChTqYlDjtI)

Looks like missed waterings and a lot of over love.. May they rest in peace...  :'(


I salute you Patrick for the great "reveille" tribute to the fallen Mango trees. One of the highest Honors of tribute!

We bestow this high honor to those who were taken far before their prime.. May they be remembered for their bravery in the harsh desert heat without several inches of mulch and daily watering for the duration of the apparent drought.  They wont be forgotten.. Now pony up that credit card, lets get shopping!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gunnar429 on April 03, 2014, 10:07:37 PM


We bestow this high honor to those who were taken far before their prime.. May they be remembered for their bravery in the harsh desert heat without several inches of mulch and daily watering for the duration of the apparent drought.  They wont be forgotten.. Now pony up that credit card, lets get shopping!
[/quote]

That's what i'm talking about....just like a jazz funeral in new orleans....it was sad to see you go, but we had a helluva time knowing ya!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mangosurf on April 04, 2014, 07:12:45 AM
What about using a De-chlorination filter for the garden hose similar to this http://www.allfilters.com/gardenfilters/waterfilters/rainshower-garden-gro (http://www.allfilters.com/gardenfilters/waterfilters/rainshower-garden-gro) to remove the chlorine from the terrible tap water. And a long water soak around the plant with enough de-clorinated water to leach out the salt build up. Then applying some gypsum around the tree extending it out 2 feet from the trunk and watering in 1- 2 cups of it. Will Gypsum help to loosen up the soil so that it can leach out the salts better? I think he needs to do a soils analysis to determine what the problem is otherwise more trees are gonna end up dead which is a major waste of time, money, and water.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mangosurf on April 04, 2014, 07:56:14 AM
Here is an article I found from the University of Georgia on amending saline or sodic soils
http://www.caes.uga.edu/Publications/pubDetail.cfm?pk_id=8004 (http://www.caes.uga.edu/Publications/pubDetail.cfm?pk_id=8004)



We bestow this high honor to those who were taken far before their prime.. May they be remembered for their bravery in the harsh desert heat without several inches of mulch and daily watering for the duration of the apparent drought.  They wont be forgotten.. Now pony up that credit card, lets get shopping!

That's what i'm talking about....just like a jazz funeral in new orleans....it was sad to see you go, but we had a helluva time knowing ya!
[/quote]





I don't think ponying up the credit card and buying new trees is the solution (I unfortunately have A LOT of experience with this) because they will just face the same fate unless I can figure out the source of the problem. I think it is the chlorinated, high salt, hard irrigation water in combination with saline or sodic soil. I'm really bummed out about this since I don't have the money to waste on trees as I am a broke masters student.  :(
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gunnar429 on April 04, 2014, 09:58:27 AM
Once established (3 months or so, mango trees shouldn't need much external watering, except in drought.  Plus, you could get a Chlorine filter for the hose (I just asked about it recently in a thread).  From my understanding, they are more likely to die from "over-care" than from neglect. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 04, 2014, 12:20:47 PM
I'm not sure what is going on with those burnt-looking trees.

Questions:

Have they been watered or fertilized with 20-20-20 (Miracle Grow, Peters, etc.) or other quickly soluble fertilizers (fast release)?   Not good--- especially during dry season without three-times a week watering of the quick-drying sandy soil.

Were they planted in Black Kow or other rich, mucky compost?  Not good for mangos.



Growing-tip die-back can be from disease or pests, or from mineral deficiencies:  not enough Copper, Boron, Calcium, Zinc.
The plan to spray with Copper is probably a good idea--- for one or two applications, but avoid frequent repetitions.

The above-mentioned recommendation to apply Calcium Sulfate (Gypsum), is also a good idea.  Our deep sandy soils are usually deficient in Calcium, and everything else.  This Calcium deficiency is exacerbated when all the other fertilizer elements are applied without Calcium.

The above-mentioned recommendation to decrease Chlorine in water may also be helpful (I'm not sure).  [Fluoride is bad too]
Avoid using swimming pool water on sensitive plants, such as Lychees and Jaboticabas.  Maybe mangos?

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mangosurf on April 04, 2014, 12:44:34 PM
Guanabanus,

Is it best to just plant mango trees straight into sandy soil? When I planted these trees I mixed 50/50 native soil and potting soil mix. What do you think is causing the rust color in the midriff of the leaves?  The trees were fertilized with Citrus & Fruit Tree Food 7-3-3  and some fish fertilizer 5-1-1 once the weather warmed up in February.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 05, 2014, 12:04:56 AM
Those fertilizers are probably better than 20-20-20, but notice that 7+5 = 12% Nitrogen , which is high for mango, versus 3 + 1 = 4% Potassium, which is extremely low[assuming you used equal amounts of each of the two products].  The middle number, Phosphate, is O.K.

Yes, root-pruning, then placement into a plain sand hole, leaving a berm to hold water,  is what is generally advocated for mangos.

I often add a little Calcium Sulfate and a little "organic" fertilizer containing Mycorrhizae and beneficial soil bacteria.  I haven't proved that there is a benefit.

Beyond the water-retention berm, in the 3-foot radius where sod has been removed, I add about an inch of light garden soil (Lambert's), place conventional slow release fertilizer and organic fertilizer over the garden soil, and cover with mulch.   This makes an instant topsoil over the sand, favoring mango feeder roots there.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: alexO on May 26, 2014, 03:26:20 PM
Can anyone help me identify what is wrong with this leaf? It is happening on a Coconut cream and a Carrie. It only affects some of the older leaves. My guess is some sort of deficiency but I can't figure it out.

Alex
(http://s30.postimg.cc/5lqvpevt9/IMG_20140526_151917.jpg) (http://postimg.cc/image/5lqvpevt9/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 26, 2014, 11:50:43 PM
A photo of the under side of the leaf might be helpful.

This is probably damage from feeding on the leaf by Thrips and / or Mites.  This happens a lot in dry weather when plants are stressed, and when rain doesn't wash pests off the foliage.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bangkok on May 27, 2014, 12:03:39 AM
To me this looks like a very old leaf that is very crispy and was going to drop next days.

I had loads of old leaves like that and they all dropped. If this is a defficiency i have no idea. To me it looked natural, leaves don't live forever.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: alexO on May 27, 2014, 07:19:23 PM
I can't upload a picture at the moment but I will asap. I did take a look at the back of the leaves and noticed that the affected leaves had tiny black spots. What do you think this could be?

Thanks for the help it is greatly appreciated!

Alex
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: alexO on May 28, 2014, 07:46:32 AM
Here are some pictures of the backs of the leaves.
(http://s23.postimg.cc/e40h45p93/IMG_20140527_174530.jpg) (http://postimg.cc/image/e40h45p93/)

(http://s27.postimg.cc/60fyq0ftb/IMG_20140527_174512.jpg) (http://postimg.cc/image/60fyq0ftb/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 28, 2014, 08:09:45 AM
It does look like typical spring-time damage by thrips and mites.  I don't see any there now.
They may have been washed off by heavy rain, heavy irrigation, or perhaps you already sprayed them?
Predatory insects may also have worked there, eating the pests.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: alexO on May 28, 2014, 08:44:38 AM
Thanks so much, I have been thinking that it was some sort of nutrient deficiency. What should I look for in the future? If I do find anything what's the best option for dealing with them?

Alex
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 28, 2014, 02:12:32 PM
Spray hard with water once or twice a week in dry weather.  Be sure to hit the undersides of the leaves.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mangosurf on June 02, 2014, 11:02:43 AM
Here is an update of the before and after pictures of my dying mango tree. It basically died to just above the graft but the rootstock is very healthy and pushing growth. Is there any way to try and stimulate growth in the grafted portion of the tree? Or is it worth trying to graft another scion to the rootstock? Maybe I should just trash this tree but I hate to lose the money.

(http://s29.postimg.cc/qb6rwc2c3/leaf_damage_Ong2.jpg) (http://postimg.cc/image/qb6rwc2c3/)


(http://s15.postimg.cc/m8i0a3yuv/Spirit_of_76_Coming_Back.jpg) (http://postimg.cc/image/m8i0a3yuv/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on June 02, 2014, 11:10:11 AM
Tough to see where the graft union is however if that is all rootstock growth and there is not growth above ghe graft, money may have a 'll ready been lost.  You could try grafting on to the main rootstock or if not so inclined,  trash it and start over.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangomandan on June 07, 2014, 11:15:17 AM
Does this look like fertilizer burn?
And is it only nitrogen that will burn?  Or can potassium and phosphorus burn in excessive quantities?

Over the last few months I've thrown everything I could think of at this little tree, which did not flush at all during 2013.
So the damage is self-inflicted, I suspect.

I had thought that organic fertilizer, being slow-acting, would not burn.   Wrong?

Luckily the newest growth looks fine.




(http://s28.postimg.cc/8pnaxvmft/Burned.jpg) (http://postimg.cc/image/8pnaxvmft/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 07, 2014, 11:33:35 PM
Mangomandan,

Looks more like powdery mildew damage, which would have occurred during mildly cool nights--- in the 60's --- which we had quite a few of not too long ago.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Dogmatix on June 15, 2014, 12:39:44 PM
Hi, I am new to this forum and we recently planted an Alfonso Mango a couple of months ago in our backyard. This is our first experience with planting a mango tree -it is a 15 gallon and we were told to plant it in full sun, with the pot and just cut the base open which we did. It did ok for a couple of weeks but recently, it is looking diseased and I'm afraid it's not going to survive!!

We live in san diego - I read some great posts from folks who have mango trees in So Cal. I've attached some pictures. I would love your help and recommendations to revive this tree.

Questions
1. Can the tree be revived?
2. Should we remove it from the ground and move it to a pot?
3. Wrong fertilizer probably used - should I repot with new soil and add liquid fish emulsion?
4. Is it diseased? If yes, any recommendations to help?

(http://s15.postimg.cc/7qy6bl79z/20140615_090940.jpg) (http://postimg.cc/image/7qy6bl79z/)

(http://s15.postimg.cc/gahk9cfmf/20140615_091000.jpg) (http://postimg.cc/image/gahk9cfmf/)

(http://s15.postimg.cc/i3p2beq6v/20140615_091030.jpg) (http://postimg.cc/image/i3p2beq6v/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: puglvr1 on June 15, 2014, 01:06:57 PM

" with the pot and just cut the base open which we did. It did ok "

I've never heard advise like this before...its best to remove the pot entirely and plant it inground at or just slightly above the soil level (so the trunk is not below the soil...

Do you remember what type of fertilizer you used? Young mango trees especially newly planted do not need fertilizer for a few weeks/months after transplanting unless its a small amount of "slow fertilizer". After about 6 weeks or so you can give them some Fish emulsion and Kelp at half strength and when you see new growths you can start adding some slow release fertilizer around the drip line...

Watering the newly planted tree on a regular basis is also very important especially if its been hot and dry?

You can try very carefully dig it back back and remove the plastic pot and replant it...at this point you don't have anything to lose...water it well and keep the soil "moist" not overly wet or soggy...Only fertilizer lightly once you see new growths...

Oh, and remove the blooms also...

Good luck!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: simon_grow on June 15, 2014, 01:51:02 PM
I've heRd that type of advice before but what they meant was to cut the pot off and remove it before planting. A newly planted tree shouldn't be fertilized for a while and it looks like its fertilizer burn on your tree. Your tree should recover if the damage is not too severe.

I would pull up your plant and flush it if you fertilized it and then replant in native soil only removing any fertilizer that you added to the planting hole. Check the moisture of the soil before you water. It's supposed to be cloudy for the next week so this may help with the transplant shock. Good luck and please keep us updated.
 
Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Dogmatix on June 15, 2014, 04:08:01 PM
Thank you for the responses. I did replant without the plastic pot. I used a mixture of native soil and the soil the plant came in. I tried washing out as much fertilizer as I could. Let's hope I see new growth in 6-8 weeks. Will keep you posted.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangomanic12 on June 17, 2014, 12:44:31 PM
Bad water, bad water bad wa T .........ER   B...A...D W...AATT.......er
 
I bet you are watering with city water  ie: Chlorinated water if you continue this the tree will die .
Get yourself a hose end filter to get rid of the chlorine / chloramime.

I have seen this before in my mangoes in the past, they all eventually died  until  i started to use a filter to get rid of the chlorine


Start with the water , no more fertilizers , get that filter to water with  and you will see improvement. From my experience fruit trees hate chlorine. They want pure or rain water
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoprofessor on June 29, 2014, 07:05:26 PM
Hello tropical fruit lovers:  I am frequently asked to do presentations for garden clubs and other gardening organization get-togethers.  At a presentation last week a number of those present were talking about planting mango trees.   I was asked to give suggestions on what to do to protect young mango trees when Winter comes.  My first suggestion was to get 4 tree stakes like the ones in the picture that I used to support my large tree fern when I moved it.  You can get these tree stakes at Home Depot, Lowes or most nurseries.  They are round, about 2 inches in diameter and 8 feet long.  This suggestion applies to all young trees that are planted in the ground and will work for papaya, guava, etc as well as mango trees.   Drive the four stakes into the ground to form a square with your young mango tree in the center of the square.  Leave enough space to clear the widest branches.  Pick up several cheap drop cloth type painting tarps that will form a good cover for your young tree.  When Winter comes and a freeze is predicted for your area, cover the tree over night and remove the tarp after sunrise.

(http://s21.postimg.cc/kazourgxv/Tree_fern_braces.jpg) (http://postimg.cc/image/kazourgxv/)

A second option is to use your old Christmas lights and wrap the young tree as if you were decorating it for Christmas.  A young tree may only require one string of Christmas lights.  An older tree might need a couple of light strings.  You MUST use the older incandescent type of Christmas lights because they produce heat.  The new Christmas lights are cheaper to run but they are cold and will do nothing but make your tree look pretty.  The main advantage of using your old outdated Christmas tree lights from the garage rafters besides the price is that you can wrap the tree before any freeze is predicted and leave the lights on the tree until there is no longer any frost danger.  If you don't still have your old Christmas tree lights, hit a few garage sales or check out the neighborhood to still if anyone has left theirs on the house from last year. If you see a house with the lights still on the house, knock on the door and you might get a string of lights for free!  When a freeze is predicted just run out your good quality extension cord, plug the lights in and know that your tree will not only look pretty but be safe from the freeze.

(http://s27.postimg.cc/inrvgxanz/Christmas_tree_lights.jpg) (http://postimg.cc/image/inrvgxanz/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Californiatropicals on July 07, 2014, 10:17:26 PM
Hey everyone!

I need help

I have two mango trees. One is timotayo, one is Keitt. Keitt hasn't pushed any foliage growth this year, only flowers and 3 mangoes!

Here is the keitt
(http://i1243.photobucket.com/albums/gg545/dvaldez1286/keittmango_zpsa4532242.jpg) (http://s1243.photobucket.com/user/dvaldez1286/media/keittmango_zpsa4532242.jpg.html)

It's pushed flowers twice, and it's about to flower a 3rd time even though it already has mangoes on it! how do I get it to grow foliage?

(http://i1243.photobucket.com/albums/gg545/dvaldez1286/timotyao_zpsead2df8e.jpg) (http://s1243.photobucket.com/user/dvaldez1286/media/timotyao_zpsead2df8e.jpg.html)

this is the timotayo, it aborted flowers and pushed growth


thanks for any help!

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 07, 2014, 11:00:49 PM
Remove fruits, to make growth possible.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Californiatropicals on July 07, 2014, 11:23:31 PM
Remove fruits, to make growth possible.

Is that my only option? lol I wanted to remove the fruits since they set, but also want to try a northern california grown mango... UGH!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gunnar429 on July 08, 2014, 10:05:12 AM
many of us share your sentiment, but it just doesn't make sense.  Maybe another member can hook you up with a fruit.  It's agonizing, but your tree will suffer, all for a few fruit that may not even ripen correctly.  Stay strong.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Californiatropicals on July 08, 2014, 02:38:21 PM
many of us share your sentiment, but it just doesn't make sense.  Maybe another member can hook you up with a fruit.  It's agonizing, but your tree will suffer, all for a few fruit that may not even ripen correctly.  Stay strong.


Thanks for the support in these  hard time, brotha! lol  So will completely removing the fruit stop it's flowering process too? Can I leave one fruit?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mr. Clean on July 08, 2014, 06:38:36 PM
Californiatropicals:  Har is one of the most knowledgeable people on the forum for caring for trees.  The fruit takes energy away from the tree to grow.  The more energy you take away, the less it will have to grow. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on July 14, 2014, 07:19:01 AM
Last week Sunday I picked up a Julie mango tree from the local nursery, and I planted it on Wednesday.  It looked like it was doing great, but the past couple days I noticed some flowers turning brown.  I'm afraid it's infected with anthracnose or something else is making my tree unhappy.  Or is this normal?  Can a fungus infection happen so quickly (roughly 4 days)?  Can someone take a look at the pics I took today and let me know.  BTW the 1st pic is just to give perspective of the size of the tree, and the last 2 are zoomed in on the brown blossom.

Note about the soil conditions:
When I planted the tree in the ground, I used the soil the plant was in, and used some top soil around the hole.  Plus there's about 2-3 inches of topsoil on top of the original soil the plant was growing in.  Additionally, when digging the hole there was about 6 inches of soil before I hit the bedrock.  Not sure if any of this makes a difference.


(http://s8.postimg.cc/6cocpdmg1/20140711_134500.jpg) (http://postimg.cc/image/6cocpdmg1/)

(http://s8.postimg.cc/byartfn4x/20140714_065546.jpg) (http://postimg.cc/image/byartfn4x/)

(http://s8.postimg.cc/demabkq1t/20140714_065636.jpg) (http://postimg.cc/image/demabkq1t/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on July 14, 2014, 08:18:55 AM
Dont worry about the blooms, irrelevant at this point.

My concern is a ll the potting soil you added and specifically on top of tge plant.  You should never sdd soil on top of the plsnt.  I would like to see a picture of the base of the trunk and the graft in relationship to the soil level.

Where in Florida are you located?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 14, 2014, 08:23:30 AM
Yes, Antracnose fungus on the blooms.

It is too soon to allow fruiting.   If any fruit sets, remove with entire bloom spike when fruit is pea-sized.

Pull away the excess soil from the trunk--- until you can see the top root connections to the trunk.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on July 14, 2014, 08:34:39 AM
Thanks for the replies guys!  I took some pics of the graft in relation to the soil. 

I'm based in Pembroke Pines.

How much top soil should I remove?  I'm a newb, and not sure what "top root connections to the trunk" means.  Does that mean remove all the top soil until I get to the top of the original soil the plant was potted in?  Would it be ok to put a fast draining potting mix on top or just remove the top soil and let it be?

(http://s29.postimg.cc/95xcucxar/20140714_082608.jpg) (http://postimg.cc/image/95xcucxar/)

(http://s29.postimg.cc/xxwz1lehf/20140714_082638.jpg) (http://postimg.cc/image/xxwz1lehf/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on July 14, 2014, 10:08:36 AM
Thanks for the replies guys!  I took some pics of the graft in relation to the soil. 

I'm based in Pembroke Pines.

How much top soil should I remove?  I'm a newb, and not sure what "top root connections to the trunk" means.  Does that mean remove all the top soil until I get to the top of the original soil the plant was potted in?  Would it be ok to put a fast draining potting mix on top or just remove the top soil and let it be?


Top root connections are also known as crown roots.  Yes, never want to add soil/potting mix on top of the level of the soil in the pot (except in extereme cases where for some odd reason the pot had lost a lot of soil and roots were exposed, but that is the  outlier, not the norm).


Would it be ok to put a fast draining potting mix on top or just remove the top soil and let it be?


As stated, do not add any top soil, potting mix, etc. to the top of what was the level in the pot.  Ultimately, it would have been best to plant the tree where the soil level in the pot was 2" - 3" ABOVE the ground's soil level. 

Adfditional care:  Enlarge your tree ring to about 3 feet out from the trunk, leave about 12" - 18" bare and then lay 6" - 8" of pure cypress mulch (preferable grade A -- can be purchased at The Bushel Stop, stay away from mulch from any of the "big box stores").  Hose water daily (a very good soaking), in either early morning or late afternoon/early evening, for the forst month and then lighter hose watering mixed with irrigation if you have an irrigation system, 4 -5 days a week depending on how much rain you are getting.  Standard irrigation systems are not enough for newly planted trees as they irrigation system is meant to water in sod, and will only have an effect on the top 2" - 3" or so.  Fertilize with 8-3-9 or a high quality palm fertilizer after the first 30 days.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on July 14, 2014, 11:04:23 AM
OK thanks for the tips!  I'll remove the top layer of soil today ASAP.  After I remove the top level of soil, it might be a couple inches below ground soil level.  If it is, it won't be by much.  Is that ok?

The Bushel Shop is a bit of a drive.  I'll ask a local nursery if they have any Grade A pure cypress mulch. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: murahilin on July 14, 2014, 01:17:43 PM
OK thanks for the tips!  I'll remove the top layer of soil today ASAP.  After I remove the top level of soil, it might be a couple inches below ground soil level.  If it is, it won't be by much.  Is that ok?

The Bushel Shop is a bit of a drive.  I'll ask a local nursery if they have any Grade A pure cypress mulch.

The cypress mulch from Home Depot or Lowes is fine. I've been using it for years with no issue.

Why might the top of the roots be a couple of inches below ground soil level? Did you plant your tree deeper than it was in the container? Always try to plant your trees at least an inch or two higher than the ground level. Also, in S FL sand, you don't need to amend the soil when planting mangos.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on July 14, 2014, 01:34:52 PM
OK thanks for the tips!  I'll remove the top layer of soil today ASAP.  After I remove the top level of soil, it might be a couple inches below ground soil level.  If it is, it won't be by much.  Is that ok?

The Bushel Shop is a bit of a drive.  I'll ask a local nursery if they have any Grade A pure cypress mulch.

The cypress mulch from Home Depot or Lowes is fine. I've been using it for years with no issue.

Why might the top of the roots be a couple of inches below ground soil level? Did you plant your tree deeper than it was in the container? Always try to plant your trees at least an inch or two higher than the ground level. Also, in S FL sand, you don't need to amend the soil when planting mangos.

Much comes with weed seed, insects and has a tendency to be moldy or having fungal issues.  Bottom line, its "dirty" and not fresh.  Bushel Stop's may be more expensive but it is fresher and cleaner.  Just my 2 pennies...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on July 14, 2014, 02:44:08 PM
Yes I planted it slightly below ground level initially which l hope I can work around with some of the input here (thanks for all the help so far!)? 

I carefully removed most of the topsoil this afternoon but then it started raining.  Hopefully not too much rain water is trapped on top.  Initially, I planted the tree on a slight decline, with the thinking that water will naturally roll down the slant and into the lake water about 10 - 15 feet behind it, instead of having the tree sitting in a pool of water.  I hope that theory helps right now haha!

After calling around,I'm making the trip to the Bushel Shop tomorrow and picking up the mulch.  Lots of places don't have unmixed Cypress Mulch.  The nearest one I found will take me the same time as driving to Bushel Shop (excluding Lowes, HD etc). 

So once I have the mulch, I'll dig an additional 2-3 feet around the plant, remove as much of the topsoil as I can (being careful not remove much of the soil the plant was potted with), and fill that with the mulch.  This still won't fix the depth issue though.  Should I do anything about that?

Thanks again for everyone's help!


EDIT:  Just ran outside quickly to check the mango plant, and nope, no pool of water resting on my mango plant! :)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on July 14, 2014, 04:41:51 PM
Yes I planted it slightly below ground level initially which l hope I can work around with some of the input here (thanks for all the help so far!)? 

I carefully removed most of the topsoil this afternoon but then it started raining.  Hopefully not too much rain water is trapped on top.  Initially, I planted the tree on a slight decline, with the thinking that water will naturally roll down the slant and into the lake water about 10 - 15 feet behind it, instead of having the tree sitting in a pool of water.  I hope that theory helps right now haha!

After calling around,I'm making the trip to the Bushel Shop tomorrow and picking up the mulch.  Lots of places don't have unmixed Cypress Mulch.  The nearest one I found will take me the same time as driving to Bushel Shop (excluding Lowes, HD etc). 

So once I have the mulch, I'll dig an additional 2-3 feet around the plant, remove as much of the topsoil as I can (being careful not remove much of the soil the plant was potted with), and fill that with the mulch.  This still won't fix the depth issue though.  Should I do anything about that?

Thanks again for everyone's help!


EDIT:  Just ran outside quickly to check the mango plant, and nope, no pool of water resting on my mango plant! :)

If you didn't break up the root ball, and assuming it was intact when you removed from the bot, you can gently dig far enough around the tree and excavate the rootball undisturbed.  Then back fill the hole with some of the soil so that when planted the pot soil level is a couple/few inches higher than ground level.  Then follow the steps as described above.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: murahilin on July 14, 2014, 09:36:02 PM
Much comes with weed seed, insects and has a tendency to be moldy or having fungal issues.  Bottom line, its "dirty" and not fresh.  Bushel Stop's may be more expensive but it is fresher and cleaner.  Just my 2 pennies...

I haven't had that issue with Home Depot's cypress mulch in all the years of using it. Maybe they have a better source now than when you last purchased.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 14, 2014, 10:02:20 PM
The Bushel Stop mulch does smell really good, and is a little cheaper when one is near enough.

I usually use Home Depot mulch, because it is usually closer.   I prefer the No-Float / Natural Cypress mulch.   Some customers insist on the red junk.   When it rots, the soil is red!   Healthy?

Nutritionally better, and cheaper,  than any of the above, is fresh tree-surgeon mulch--- if you can use a hot-steaming, full-dump-truck load at a time.  It's better because it contains leaves, as well as wood.   However it is highly variable, and so doesn't always leave an even, neat appearance.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on July 21, 2014, 04:39:51 PM
I have some questions about the earlier instructions on the size of the hole for my Julie tree...hoping someone can chime in and help clarify please. 

Quote
Adfditional care:  Enlarge your tree ring to about 3 feet out from the trunk, leave about 12" - 18" bare and then lay 6" - 8" of pure cypress mulch

Question 1)  I increased the diameter of the ring today, and am at 18" currently from the trunk, so the hole is 36' (3 ft) in diameter total.  Do I need to extend it to 3 ft from the trunk so a hole of 6 ft diameter total or is the 3 ft total diameter good?

Question 2)  Is the mulch just a layer of 6" - 8" deep, and then use it to fill the hole going out from the trunk and roots to the edges of the hole?  Or do I keep it at 6" - 8" in depth with mulch, and fill the hole outwards from the trunk, then stop and leave 12" - 18" of complete empty space, so there will be a gap of empty space around the mulch?

Question 3)  Should I remove the blossom that has anthracnose now that there's a small fruit?

Thanks for any responses guys  8)

EDIT:  Added pics :)  ...Note pic 2 is of the small fruit to give you indication of size of it.

(http://s15.postimg.cc/rln5y6vw7/20140721_183741.jpg) (http://postimg.cc/image/rln5y6vw7/)

(http://s15.postimg.cc/s9w0h4ulz/20140721_183759.jpg) (http://postimg.cc/image/s9w0h4ulz/)

(http://s15.postimg.cc/qxebf8x6f/20140721_183820.jpg) (http://postimg.cc/image/qxebf8x6f/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: murahilin on July 21, 2014, 06:54:25 PM
I have some questions about the earlier instructions on the size of the hole for my Julie tree...hoping someone can chime in and help clarify please. 

Quote
Adfditional care:  Enlarge your tree ring to about 3 feet out from the trunk, leave about 12" - 18" bare and then lay 6" - 8" of pure cypress mulch

Question 1)  I increased the diameter of the ring today, and am at 18" currently from the trunk, so the hole is 36' (3 ft) in diameter total.  Do I need to extend it to 3 ft from the trunk so a hole of 6 ft diameter total or is the 3 ft total diameter good?

Question 2)  Is the mulch just a layer of 6" - 8" deep, and then use it to fill the hole going out from the trunk and roots to the edges of the hole?  Or do I keep it at 6" - 8" in depth with mulch, and fill the hole outwards from the trunk, then stop and leave 12" - 18" of complete empty space, so there will be a gap of empty space around the mulch?

Question 3)  Should I remove the blossom that has anthracnose now that there's a small fruit?

Thanks for any responses guys  8)

EDIT:  Added pics :)  ...Note pic 2 is of the small fruit to give you indication of size of it.


Check out some of these posts to see images of what your tree should generally look like with mulch. http://tropicalfruitforum.com/index.php?action=profile;area=showposts;sa=topics;u=1 (http://tropicalfruitforum.com/index.php?action=profile;area=showposts;sa=topics;u=1)

You can remove that entire panicle now.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on July 21, 2014, 07:17:20 PM
Thanks for the pics and info!  Looks like I need to make the ring a little bigger.  I'll take it out another 12", from the center.  So 60" (5 ft) total diameter for the ring.  Then I'll remove the panicle and then raise the plant so that it's 2" - 3" above the surrounding mulch.



Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 21, 2014, 08:48:42 PM
No need to raise the plant more.  It is already too high.

Add some sandy soil to cover the roots.   Only a little bit of root should be visible where it comes out at the base of the above-ground part of the trunk,  Leaving the whole top mass of roots uncovered the way I see in this picture will kill all those roots, and probably the tree.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on July 21, 2014, 09:54:23 PM
Ok thanks Guanabanus.  I'm glad I don't have to raise it then.  I was worried about disturbing it some more. 

What do you think of this approach?  Extend the ring and fill it all in with mulch so that it's level with where the base meets the soil in the current picture.  Then with a small 6" diameter going around the trunk, add an inch or two of potting soil to protect the trunk.  My concern with doing that is putting soil on top again.

Basically I have top soil (Florida Nursery Mart brand), cypress mulch (Bushel Stop brand and unopened), and potting soil (Bushel Stop brand  and unopened) to work with.  I'd rather use what I have to fix it rather than going out again to buy more soil haha!!

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 22, 2014, 08:02:46 AM
Don't put soil on the trunk!   Only over the roots.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on July 22, 2014, 09:03:12 AM
That's what I was thinking too.  I've just finished my project.  I used 40% mulch / 40% potting soil / 20% top soil to fill the majority of the ring.  Then used a 50% / 50% potting soil to mulch mix around the base roots.  Finally added a layer of about 4 inches of mulch on top of that.  Let's see how my plant does!  Thanks for all the help.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangomandan on July 28, 2014, 08:48:31 PM

(http://s15.postimg.cc/drk27ccmv/Lemon_Zest_with.jpg) (http://postimg.cc/image/drk27ccmv/)

Nearly all my LZ mangos are showing dark green blotching on the skin. After a couple days the blotch gets very dark.

It has not affected the quality of the fruit so far, but I'd be interested if someone can identify what is going on.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on July 28, 2014, 09:46:20 PM
Dan - that is normal,  classic characteristic of the LZ.  Nothing wrong at all.  Looks perfecto!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Ryansbrooks1991 on July 29, 2014, 11:31:04 AM
My otherwise healthy looking tree has newer leaves twisting what could the nutrient deficiency be? Also have an anthracnose problem not yet seen in leaves, but on the branches I notice the blackening istaking over. What are some suggestions for this grafted tree. Also notice a few odd shaped leaves, is that normal or another deficiency? This is a Carrie Graft.
 
(http://s3.postimg.cc/sxqzdz0y7/20140729_101437.jpg) (http://postimg.cc/image/sxqzdz0y7/)

(http://s3.postimg.cc/7qn8pyob3/20140729_101441.jpg) (http://postimg.cc/image/7qn8pyob3/)

(http://s3.postimg.cc/rwqqoujyn/20140729_101445.jpg) (http://postimg.cc/image/rwqqoujyn/)

(http://s3.postimg.cc/bj6r5p3tb/20140729_101455.jpg) (http://postimg.cc/image/bj6r5p3tb/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: TnTrobbie on July 29, 2014, 11:33:46 AM
Twisted leaves are normal for some varieties. Carrie included. Looks like a very healthy tree.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 29, 2014, 10:13:49 PM
Yes, all healthy.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Bigstick62 on August 03, 2014, 08:14:44 PM
Hi everyone:
Attached is a picture of a Cogshall Mango tree in my yard. As you can see the edges of the leaves have "burn marks" and have started to curl upwards although I have not used any fertilizer on the tree. Can anyone tell me what is going on here and what I can do to address the issue?
Thanks for all your help


(http://s28.postimg.cc/h2sjkx0h5/20140802_153540_A.jpg) (http://postimg.cc/image/h2sjkx0h5/)

Same thing seems to be happening on my Okrung mango tree


(http://s27.postimg.cc/bwht5sxvz/20140628_112521.jpg) (http://postimg.cc/image/bwht5sxvz/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 03, 2014, 10:18:58 PM
Both appear to have Powdery Mildew damage.  Severe deficiency of Potassium can also cause marginal firing.

The Okrung has something else going on--- probably a multiple deficiency, probably including Zinc, Copper, and Boron.   I'd give it a full micro-nutrient mix plus kelp extract, sprayed on the leaves, and a good mixed fertilizer on the ground, plus Calcium Sulfate (if there isn't already abundant Calcium in your soil).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cornelis on August 08, 2014, 12:57:56 PM
Hi mango lovers,

I've attached some pictures of my 6 year old mango tree, living in the middle of Sweden. It is grown from seed and has spent the winters indoors and the summers outdoors. The height is just below 4 ft (1.10 m) and the branching at the top is from this summer. It looks quite good, but the low leaves of the tree have some strange symptoms of disease. On the back of the leaves there is a white mass, as in the 5th image. Also I think they are mottled as in the 4th image, but maybe that is just a sign of the leave aging. I have never given it any fertilizer but repotted it every year (at least). What do you think the problem is, fungus, bacterial spots or something else?

(http://s7.postimg.cc/5trciz8bb/2014_08_05_07_15_00.jpg) (http://postimg.cc/image/5trciz8bb/)

(http://s7.postimg.cc/5r7gw54nr/2014_08_05_07_15_17.jpg) (http://postimg.cc/image/5r7gw54nr/)

(http://s7.postimg.cc/alwkgodlj/2014_08_05_07_15_38.jpg) (http://postimg.cc/image/alwkgodlj/)

(http://s7.postimg.cc/aedixws0n/2014_08_05_07_26_19.jpg) (http://postimg.cc/image/aedixws0n/)

(http://s7.postimg.cc/5pxj2q2tz/2014_08_05_07_26_58.jpg) (http://postimg.cc/image/5pxj2q2tz/)

(http://s7.postimg.cc/b02hu0n2v/2014_08_08_18_08_31.jpg) (http://postimg.cc/image/b02hu0n2v/)

(http://s7.postimg.cc/t999obs2f/2014_08_08_18_09_03.jpg) (http://postimg.cc/image/t999obs2f/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: BrettBorders on August 10, 2014, 11:06:27 AM
Here is my baby Sweet Tart. It looked a bit battered when I bought it at the PB Rare Fruit council sale, but I chose it because it had the best branching structure of all that were for sale... and figured I could give it some TLC. It is finally flushing - a good sign.

(http://s29.postimg.cc/rdo3exd0j/sweet_tart_1.jpg) (http://postimg.cc/image/rdo3exd0j/)
(http://s24.postimg.cc/3zrtgv9dd/sweet_tart_2.jpg) (http://postimg.cc/image/3zrtgv9dd/)
(http://s13.postimg.cc/v6rjfg2ir/sweet_tart_3.jpg) (http://postimg.cc/image/v6rjfg2ir/)

It has curly leaves - kind of like a warped records - with ash-white / brown tips that look dead. Some spots and dead holes in the leaf.

My goal with this plant is to get it healthy and move it in to a big container. If I could get 10 mangos a year from it, I would be happy. More would be a score!

1.) What should I do, if anything, to address the leaf defects?
2.) What kind of fertilizer or nutrition is recommended for mangos in containers? Do I need some sort of liquid?

I currently only have 8-3-9 granules from Excalibur.





Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 10, 2014, 11:41:57 AM
The leaves may have been damaged by wind or by being sprayed too hard when the leaves were very tender.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: PurpleAlligator on September 01, 2014, 08:15:27 PM
So since I moved into my new property a couple months ago, I've been working on my goal of getting a lot of mango varieties in the ground.  I bought 5 at the Fairchild mango festival and another 19 from Pine Island.  Several of them have been under attack, and some are doing great.  The Vallenato I bought from Fairchild is doing great, flushing and no damage at all.  The Angie has been in the ground the same 6 weeks and any new growth has been attacked. 

My longan caretaker was here Saturday and showed him the damaged plants still in pots and he immediately said "son caracoles" (snails).  He said they come up at night and feed on the leaves and new growth and are back in the soil in the daytime. 

Some of the leaves were curled like in some of the pictures I see here.  He said he was going to spray them for me (he was fumigating the longans for ants and whitefly).  I had to leave so I didn't see if he actually  was able to.

But I went to home depot and bought this snail bait today.  Does anyone have experience with this being effective?

(http://s8.postimg.cc/kss38rc41/20140901_193332.jpg) (http://postimg.cc/image/kss38rc41/)

I was out trimming the grass around the trees and putting down the snail bait at dusk today and what did I see on the Alphonso mango I planted yesterday but this snail on a top leaf of the Alphonso, confirming his diagnosis.

(http://s16.postimg.cc/8csxrc21d/20140901_192205.jpg) (http://postimg.cc/image/8csxrc21d/)

Here's the Angie that I'm still hoping is going to make it after being ravaged.  New flushes have been killed off almost immediately.  The green grass around it are just freshly cut clippings on top of the mulch ring.

(http://s28.postimg.cc/kmpyr87jt/20140901_193046.jpg) (http://postimg.cc/image/kmpyr87jt/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 01, 2014, 08:30:34 PM
Snail baits containing Iron Phosphate are safe and effective.   I'm not familiar with the one shown.

Not all snails on plants are harming the plants--- some kinds actually survive by cleaning algae and fungi and bacteria off the leaves.

I don't recall seeing snail damage on mangos, but then I have never been around Giant African Snails.

I hope your spray man is certified to spray;  it is the law when working for hire or on some else's property.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: PurpleAlligator on September 01, 2014, 08:59:52 PM
Snail baits containing Iron Phosphate are safe and effective.   I'm not familiar with the one shown.

Not all snails on plants are harming the plants--- some kinds actually survive by cleaning algae and fungi and bacteria off the leaves.

I don't recall seeing snail damage on mangos, but then I have never been around Giant African Snails.

I hope your spray man is certified to spray;  it is the law when working for hire or on some else's property.

It's an iron phosphate snail bait.  Of course he is certified. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: PurpleAlligator on September 17, 2014, 09:59:46 AM
Since I've started using snail bait I'm starting to find snail carcasses on plants and around the area.  Here's one I found this morning near some 3 gallon mango plants I haven't planted yet and new growth was being attacked.

Har - I'm new to the board but it looks like you know quite a bit on the topic.  A lot of my new 25 mango plants have not gotten off to great starts, can I reach out to you for some advice off the board?

(http://s29.postimg.cc/pjqpwwflv/P1020028.jpg) (http://postimg.cc/image/pjqpwwflv/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 17, 2014, 10:47:57 AM
Answers which I choose to give here on the forum are free.

Private consultations on phone or in person are $30 per hour.   561 523-6599
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: davidgarcia899 on September 17, 2014, 01:32:20 PM
Hey Purple Alligator, I am in your area 19997 sw 190th street and I have what is predominately a longan grove.

I can tell you two things.

1) Longans don't need to be sprayed for whitefly or ants, that is a huge waste of money and terrible for the environment. Longans in our area are basically care free as long as your occasionally fertilize and prune. And trust me I know, I have over 150 longan trees.

2) Its not snails, its 100%, my personal guarantee not snails. I accidentally introduced cuban snails onto my property and I have to deal with them constantly, but they do not touch mangos, not even seedlings that are sprouting, and trust me, seedlings are snails favorite snack.

This next advice, is speculation, your curled leaves are possibly the result of fungal problems. Most people will tell you that you need to spray most you mangos with copper or some other anti fungal at least when they are young. Our area is not as mango friendly as you'd expect, the humidity levels and soil aren't ideal.

Sometimes curled leaves are the result of nutritional deficiencies, but I assume you already know to fertilize your mangos periodically with 8-3-9 and a chelate micronutrient blend, on our soil this is essential for good tree growth for most anything and does a world of good for mango in their first years.

Finally, sometimes the leafs just come out curled especially if its very windy and the trees are growing quickly, the new leaves are sensitive to wind.

If you are taking good care of your plants any curled leaves are not life threatening.

But, I can tell you without a doubt in my mind its not snails, and that you are wasting time fumigating your longans.

If you want pm and if I have some time, Ill pop by your place and tell you what I thing and you'd be more than welcome to look around my place.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: PurpleAlligator on September 17, 2014, 03:47:26 PM
David,

Thanks for the comments.  I would definitely like to have you come over and look around and meet you as well.  We are very close to each other.  I'll send you a pm.

I prefer a chemical free property.  I bought the property about 3 months ago and the caretaker has been handling the trees for many years now and uses chemical extensively.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on September 17, 2014, 07:14:13 PM
That's a good idea. You should offer email consultation.

Answers which I choose to give here on the forum are free.

Private consultations on phone or in person are $30 per hour.   561 523-6599
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: zands on September 18, 2014, 08:01:06 AM
Mr Har has a resume as in being the prime grafter and in charge of grafting operations at Zills for many years/ And for any newbies here Zills is the epicenter of mango grafting|propagation|distribution in the US and much of Latin America. Latin America as is selling thousands of small grafted saplings at a time to owners establishing new groves in places like Peru. So that yokels in New York can buy a $1 mango that will never taste good but has lots of red coloration that makes people buy them

Zills as in selling|sending|grafted trees to Pine Island Nursery many of the trees they distribute all over America and beyond
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on September 18, 2014, 02:44:05 PM
I believe Har's title at Zill's HPP was "Annona Breeder" :-), though I'm sure he was a man of many hats during his time there. But, that's just one slice of his resume.

Definitely worth the money for a consultation.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: zands on September 18, 2014, 03:37:56 PM
I believe Har's title at Zill's HPP was "Annona Breeder" :-), though I'm sure he was a man of many hats during his time there. But, that's just one slice of his resume.

Definitely worth the money for a consultation.

It was a fortuitous day when I was on your property in April and met Har who threw a few nuggets of wisdom at me. But even better was Mr Steve from Atlas roofing who gave me some roof  leak advice saving me $2000. He was working on your roof this fortunate day

The secret roof rescuing ingredient is______________________________tar sealant in the green bucket at HD_____________ applied in all the right places


Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: crazyforcherimoya on December 29, 2014, 06:47:36 PM
for the first time after relocating to Florida and getting bitten by the mango bug my mango trees are finally blooming. Do you recommend I spray the flowers with copper? They are Glenn, Mallika and Kent. If yes can you share with me instructions as how many ounces per gallon of water of the blue powder? Also I am reading I should not spray the fully open sprig but only the bloom while forming. Is that accurate? And how often? Thanks for any help
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 30, 2014, 01:18:51 AM
A product with Potassium phosphite or with Calcium phosphonate, mixed at less-than-maximum rate, would work better on already open bloom.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fisherking73 on January 23, 2015, 03:39:17 PM
It seems like the flowers on my lemon meringue are turning brown and drying up. More water? Was watering twice a week. Can post pics in a bit.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on January 23, 2015, 03:45:15 PM
Probably powdery mildew.  A picture would help.  If that is what it is, you need to spray with sulphur to address the problem.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on January 23, 2015, 03:52:29 PM
Probably powdery mildew.  A picture would help.  If that is what it is, you need to spray with sulphur to address the problem.

If PM, it may be too late for this season.

It also may just be that they are "drying up" and not setting any fruit.  As Harrry said, would need pictures.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mike T on January 23, 2015, 03:57:34 PM
There are a few other possible and less likely causes.Anthracnose will cause foliage to be effected and flowers to blacken.This is a worse problem when the plant has been wet too much.There are insect pests that mine stems, ruin flowers and cause blackening through attacking the tissues.A photo would help. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fisherking73 on January 23, 2015, 04:03:47 PM
(http://img.photobucket.com/albums/v123/pier_afficionado/20150123_154033.jpg) (http://smg.photobucket.com/user/pier_afficionado/media/20150123_154033.jpg.html)
(http://img.photobucket.com/albums/v123/pier_afficionado/20150123_154043.jpg) (http://smg.photobucket.com/user/pier_afficionado/media/20150123_154043.jpg.html)
(http://img.photobucket.com/albums/v123/pier_afficionado/20150123_154015.jpg) (http://smg.photobucket.com/user/pier_afficionado/media/20150123_154015.jpg.html)
(http://img.photobucket.com/albums/v123/pier_afficionado/20150123_154052.jpg) (http://smg.photobucket.com/user/pier_afficionado/media/20150123_154052.jpg.html)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on January 23, 2015, 04:04:28 PM
There are a few other possible and less likely causes.Anthracnose will cause foliage to be effected and flowers to blacken.This is a worse problem when the plant has been wet too much.There are insect pests that mine stems, ruin flowers and cause blackening through attacking the tissues.A photo would help.

I have seen pannicles attacked by anthracnose but the foliage virtually unscathed...but as you say, that is more of a black color appearance.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fisherking73 on January 23, 2015, 04:05:02 PM
Petals of the flowers are turning brown :( :( :'( :'( Does not look like powdery mildew, atleast not from pictures I have seen. Early mildew? Any hope?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fisherking73 on January 23, 2015, 04:06:29 PM
It is literally like brown shriveled when a plant dries out from not enough water, but only the little leaves of the flowers.  Watering weds and sundays. Too much? Tree has been in ground since last July.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on January 23, 2015, 04:08:37 PM
Those pics look fine.  I see many little mangoes set (see the green "BBs").  As with any sized tree, in the beginning stage, there will be way more little mangoes set than the tree will hold but there are a lot set right now.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fisherking73 on January 23, 2015, 04:16:01 PM
There are tons of bb's lol So the browning is just part of the fruiting process? Soil is pretty bone dry since last watering Weds about 2-3 inches down. Gonna mulch it next time I water. How often should I be watering, Once a week then? I have been playing with the rains too and skipping waterings if it rains. People think I am mad at work cuz if it is cloudy there I check the radar to see if water is going to hit my house LOL  Have not fertilized. SOOOOOOOOOOO new to this and hoping not to hamper my babies lol  I have never seen mango flowers up close and definetly have not checked on them every day during the flowering/fruiting season LMAO  All the trees around here are huge so only see the flowers from a distance. Thanks for your help Bullie
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on January 23, 2015, 04:21:38 PM
Are you watering with hose or sprinklers?  Some light watering is ok however if it has been in the ground for a year and a half, it is pretty much probably able to survive on its own.  Too much water will have ill effects on the mangoes developing.

Don't, I repeat DON'T fertilize now.  It would put the fruit at major risk and would most likely cause them to drop and the tree would focus its energy to vegatative flushes.  If it holds fruit, wait till the final harvest to fertilize.  If all mangoes drop and its holding nothing, then you can begin fertilizing at that time.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fisherking73 on January 23, 2015, 04:25:34 PM
Thanks, no I have not fertilized thanks to all the reading I did on here.  How often should I water trees that were planted last week? twice a week for next month and then once a week? I water with a wand and hose at the base. Also read not to water the leaves lol (lots of reading lately) 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on January 23, 2015, 06:54:41 PM
I don't see anything wrong with the flowers in the pictures posted. The ones that don't set fruit, and most of them won't, are just going to dry up and turn brown.

If the trees were just planted last week, twice a week for the first couple months is sufficient, once a week thereafter until about a year out and the trees are established. After that, just during drought periods (several weeks without rainfall or signs of drought stress).

Also, if you just planted these I would consider removing the fruit that they set so that the trees can establish itself better. Newly planted trees, even larger ones, that are allowed to carry fruit to maturity often won't grow well thereafter.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bangkok on January 23, 2015, 08:28:06 PM
Looks good to me.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fisherking73 on January 23, 2015, 09:20:19 PM
Thanks. Peace of mind LOL Yeah this one is in its second fruiting season with me, last year I clipped all flowering/fruit spikes to let it focus on growing.  thanks again everyone for your insight.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on January 23, 2015, 09:58:24 PM
Thanks. Peace of mind LOL Yeah this one is in its second fruiting season with me, last year I clipped all flowering/fruit spikes to let it focus on growing.  thanks again everyone for your insight.

Depending on your soil and the weather,  i would recommend watering the newly planted trees an extra day or two per week (more with warmer drier weathers and depending if you have fast draing lighter sand soil).  Also, when you water, take the wand off the hose and water deep enough to get the water down to the entire root ball.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: GrassFlats on January 23, 2015, 10:03:14 PM
I don't see a problem at all.  The flowers that don't produce the bb size fruits will all turn brown and die.  That's whats happening to mine right now.  I wouldn't be worried
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 24, 2015, 11:51:36 AM
Tree survival and fruit retention are two different things.

When the top several inches of topsoil goes powdery dry, even well established trees will drop way more of their tiny fruits than would be the case if soil moisture were maintained--- even if the tree doesn't look wilted.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fisherking73 on January 24, 2015, 09:53:42 PM
thanks for the replies. Keeping a close eye and watering tomorrow. Was hoping for rain today to let nature do her thing,but no luck.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: ClayMango on January 25, 2015, 02:25:23 PM
yeah you have  some decent fruit set there....everything looks good
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FrankDrebinOfFruits on February 12, 2015, 12:34:37 PM
I have a Parvim mango. The new leaf growth is pale green and the leaves are young and very hard. They have a heavy plastic feel to them where as the older leaves also feel plastic like but not to this level.

Any ideas if this is an infection or nutrient deficiency? Or, is this normal for Parvim?

 
(http://s30.postimg.cc/hsxrb8ccd/20150210_174323_resized.jpg) (http://postimg.cc/image/hsxrb8ccd/)

(http://s7.postimg.cc/sixmw1nc7/20150210_174334_resized.jpg) (http://postimg.cc/image/sixmw1nc7/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 12, 2015, 08:46:21 PM
2nd picture:  I have never seen that--- very unusual Rococco or Van Goghesque swirls between the secondary veins.

I suggest that you contact a tissue-culture lab to propagate this as a novelty. 

It would also be good to have a university lab test this to see if it is a virus.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Doglips on February 13, 2015, 01:27:49 PM
It almost looks emaciated, with bulging veins.  A sport?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dongeorgio on February 14, 2015, 07:29:01 PM
What could have caused the trunk to split like this on my Carrie?


(http://i42.photobucket.com/albums/e337/Dongeorgio/FullSizeRendercopy_zps54df29be.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 15, 2015, 11:51:44 PM
How long ago did this happen?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on February 16, 2015, 11:09:58 AM
Maybe a reaction to the hot then cold weather spurts we've been seeing.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Doglips on February 16, 2015, 11:42:27 AM
To my uneducated eye, I'd say more fungal or bacterial.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dongeorgio on February 16, 2015, 01:38:51 PM
I have no idea how long ago it happened but I just noticed it a few days ago.   I have segregated the tree just to be safe but, oddly enough, the rest of the tree looks great and it is now pushing a new flush of growth. 



Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mr. Clean on February 16, 2015, 08:14:33 PM
George,
I think the Carrie roots should be covered with soil and not visible.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gunnar429 on February 16, 2015, 09:46:32 PM
The good news is it happened to your Carrie, and not another prized variety  ;)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dongeorgio on February 17, 2015, 08:52:58 PM
Good point Gunnar.  At least it was something that is easily replaceable.   This also provides another fine excuse to play hookie one day this week and go to Zills.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on February 17, 2015, 10:02:15 PM
I've had mango trees do that splitting thing shortly after a cold blast immediately preceded by warm weather. I just use it as an opportunity to lop the tree down below the splitting, and it comes back fine.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fisherking73 on February 23, 2015, 04:25:13 PM
Noticed this today after checking up on my mangoes after the cold spell. Is it early P.M.?  It is only on the pannicles, should I cut them off so it does not spread to the rest of the cogshall or my other trees? Spray? I was hoping to let fruit set this year, some small bb's on all the pannicles so far, and some more growth seems to be budding.  This sucks!!
(http://img.photobucket.com/albums/v123/pier_afficionado/20150223_1343021.jpg) (http://smg.photobucket.com/user/pier_afficionado/media/20150223_1343021.jpg.html)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fisherking73 on February 23, 2015, 04:47:32 PM
I assume if it is PM spary sulfur? What is right or best kind? Willing to drive to help my tree.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gunnar429 on February 23, 2015, 05:09:00 PM
easy there, fisher.  You will have a reply in due time...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fisherking73 on February 23, 2015, 05:34:16 PM
Those other questions where after thoughts LOL I think Murahilin is gonna limit me to one question every 4 days pretty soon LMAO.  But you guys created this monster!!!!!! And I am STILL waiting to taste several fruits mentioned by you and a few others!! Caimito is next!  and then Abiu!!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on February 23, 2015, 06:28:10 PM
Its powdery mildew. Wettable sulfur works well, there are numerous brands. Most effective when started pre-emergence.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on February 23, 2015, 07:45:49 PM
Been a lot of powdery mildew this year. Bonide makes a good micronized sulfur.

I had previously been averse to fungicides, but after many years of watching powdery mildew, scab, and anthracnose ravage my mango crop, I finally threw in the towel and started spraying on a once every 2 weeks schedule. Huge difference in fruit set.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fisherking73 on February 23, 2015, 08:14:06 PM
Can Bonide be bought locally? Every 2 weeks year round? Should I spray my unaffected trees near by? None of them seem to have it, and the cogshall has at on ONE branch of ONE fruit spike.  Ugh this sucks.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gunnar429 on February 23, 2015, 08:38:51 PM
Bonide can be bought at home depot.  I believe You would only spray while a tree is flowering. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fisherking73 on February 23, 2015, 09:26:28 PM
So sulfur for PM. Should I spray other trees as well or wait and see if it spreads?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fisherking73 on March 02, 2015, 06:02:24 PM
How and should I get rid of/control these? Big legged plant bugs, leaf leg plant bugs, stink bugs?


(http://s15.postimg.cc/cm41vh2xj/20150302_092130_1.jpg) (http://postimg.cc/image/cm41vh2xj/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Dangermouse01 on March 02, 2015, 06:22:23 PM
How and should I get rid of/control these? Big legged plant bugs, leaf leg plant bugs, stink bugs?


(http://s15.postimg.cc/cm41vh2xj/20150302_092130_1.jpg) (http://postimg.cc/image/cm41vh2xj/)

Leaf footed stink bug.
Squashing them works.

DM
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on March 02, 2015, 08:59:28 PM
Leaffooted Bug
Leptoglossus phyllopus (Linnaeus) 

http://entnemdept.ufl.edu/creatures/orn/leaffooted_bug.htm (http://entnemdept.ufl.edu/creatures/orn/leaffooted_bug.htm)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: sapote on March 02, 2015, 09:02:03 PM
So sulfur for PM. Should I spray other trees as well or wait and see if it spreads?

I was always using sulfur paste paint on (add water to sulfur dust) for PM with 70% effective, but my brother had used neem-oil and it looked much better.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fisherking73 on March 02, 2015, 09:30:33 PM
Thanks Bullie, thats exactly what I was looking for, an article like that. Found one but was not 100% if same critter since article was from Australia.  Well I guess war it is. I have had significant fruit dropping the last couple of days, and saw three of these buggers together this morning. Gonna get them before any more fruit gets affected.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fisherking73 on March 04, 2015, 06:42:00 PM
 :-\ Well have check every morning and afternoon since last post and these fruit sucker just vanished. Have not seen a single one......
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: davidgarcia899 on March 04, 2015, 10:23:31 PM
Leaf bugs don't do damage
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: jc on March 05, 2015, 05:40:13 AM
Insecticide soap worked for me.

How and should I get rid of/control these? Big legged plant bugs, leaf leg plant bugs, stink bugs?


(http://s15.postimg.cc/cm41vh2xj/20150302_092130_1.jpg) (http://postimg.cc/image/cm41vh2xj/)

Leaf footed stink bug.
Squashing them works.

DM
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fisherking73 on March 05, 2015, 06:17:17 AM
Leaf bugs don't do damage

Not according to the articles I read. Said they can cause fruit to drop. Minor pest, but either way glad they are gone!!!  ;D
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on March 05, 2015, 12:00:22 PM
For westerners......

http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn74168.html (http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn74168.html)

I personally just co-exist with them.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fisherking73 on March 05, 2015, 01:35:21 PM
For westerners......

http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn74168.html (http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn74168.html)

I personally just co-exist with them.

"During most years, leaffooted bug populations are low enough that damage to gardens is tolerable and damage to landscape plants is negligible. "
Thanks for another good read on this issue.  This article a bit more in depth, and got this bit from it. Funny how it mentions tomato plants as a target, my mango trees are surrounded by tomato plants and have not seen one stink bug in the veggie raised boxes.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on March 05, 2015, 02:07:15 PM
For westerners......

http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn74168.html (http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn74168.html)

I personally just co-exist with them.

Yeah, but you tend to co-exist with a lot...   ;)  ;D  :P
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on March 11, 2015, 05:20:47 PM
I personally just co-exist with them.

Yeah, but you tend to co-exist with a lot...   ;)  ;D  :P

You are right......I do tend to co-exist with way more than I probably should or that's good for me.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FrankDrebinOfFruits on March 11, 2015, 05:29:18 PM
For westerners......

http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn74168.html (http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn74168.html)

I personally just co-exist with them.

I am pretty sure we have these out here. I went to pick one up the other day to get rid of him and he bit me. Hurt like nine inch nails.....probably slightly more than a bee sting.  The area bitten became swollen and was red (continued to hurt for about an hour even with ice applied). No stinger left in my hand. They aren't out to attack, but apparently they have a defense mechanism. Anyone else want to test my theory?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: spaceoak on March 23, 2015, 05:11:26 PM
Anybody know what the bettle pictured below is.  Is it ok?  Is it bad for the flowers?  I found three so far.  Only on the flowers of LZ mango. 


(http://s23.postimg.cc/ra39y493r/IMG_1059.jpg) (http://postimg.cc/image/ra39y493r/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on March 23, 2015, 06:04:06 PM
Anybody know what the bettle pictured below is.  Is it ok?  Is it bad for the flowers?  I found three so far.  Only on the flowers of LZ mango. 


(http://s23.postimg.cc/ra39y493r/IMG_1059.jpg) (http://postimg.cc/image/ra39y493r/)

Mango flower beetle. They eat the flowers.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropicalgrower89 on March 23, 2015, 06:33:23 PM
Anybody know what the bettle pictured below is.  Is it ok?  Is it bad for the flowers?  I found three so far.  Only on the flowers of LZ mango. 


(http://s23.postimg.cc/ra39y493r/IMG_1059.jpg) (http://postimg.cc/image/ra39y493r/)

Mango flower beetle. They eat the flowers.

In other words, kill it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: spaceoak on March 24, 2015, 09:05:33 PM
Thank you! It is done :-)
Title: Sap oozing from mango... fruit?
Post by: Viking Guy on April 03, 2015, 12:46:55 AM
Any idea as to what would cause a big black spot on a mango with oozing sticky sap?

Never seen this on my fruit before.
(http://s13.postimg.cc/malq9ies3/20150402_194143.jpg) (http://postimg.cc/image/malq9ies3/)
Title: Re: Sap oozing from mango... fruit?
Post by: Don on April 03, 2015, 12:58:33 AM
I think that is anthracnose or something like that.
Title: Re: Sap oozing from mango... fruit?
Post by: MangoFang on April 03, 2015, 04:28:05 AM
....or....I've had mangoes exposed to a hot sun that developed those
black spots as well.....


Gary
Title: Re: Sap oozing from mango... fruit?
Post by: HMHausman on April 03, 2015, 08:27:10 AM
Any idea as to what would cause a big black spot on a mango with oozing sticky sap?

Never seen this on my fruit before.
(http://s13.postimg.cc/malq9ies3/20150402_194143.jpg) (http://postimg.cc/image/malq9ies3/)

The "go to" disease for anything on mangoes that is black is anthracnose.  I am sure there are other fungal pathogens in the world that might cause such symptoms. The problem largely goes unnoticed once a tree gets some size and there are hundreds of fruits developing.  If your tree is small, even a fruit or two looking like this can be disconcerting. Most fungicides will deal with this and prevent further occurrence and spread.  You have to balance the chemical use and your tolerance for chemical use against the value of getting perfect looking fruit There are some trees, like Rosigold in my collection, that will have virtually every fruit blacken and drop without spraying.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Viking Guy on April 03, 2015, 12:21:00 PM
So far, it is the only fruit in the orchard with the spot.  The tree itself looks fine, and none of the other fruits have spots.

Should I just cut the mango off and dispose of it? 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on April 03, 2015, 12:53:58 PM
So far, it is the only fruit in the orchard with the spot.  The tree itself looks fine, and none of the other fruits have spots.

Should I just cut the mango off and dispose of it?

Probably not necessary but it would be the ultimate in prudence to remove it and discard it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Viking Guy on April 03, 2015, 03:52:25 PM
So far, it is the only fruit in the orchard with the spot.  The tree itself looks fine, and none of the other fruits have spots.

Should I just cut the mango off and dispose of it?

Probably not necessary but it would be the ultimate in prudence to remove it and discard it.

Always hate wasting a Nam Doc Mai, lol, but don't want the other fruits to get attacked by "The Fruiting Dead."
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangorific on April 27, 2015, 01:25:36 PM
Giant Leaf on Potted Mango Tree

Greetings. I have a 3gal Pram Kai Mea that I would like to take budwood from. However, the tree has grown two giant leaves among what I would categorize as normal sized leaves. Is the abnormality anything to be concerned about? My concern is mainly preventing introduction of disease to the tree targeted for the graft. Pics of the PKM below. Thanks!

(http://s15.postimg.cc/iqi0d5713/20150427_124052.jpg) (http://postimg.cc/image/iqi0d5713/)

(http://s23.postimg.cc/exsanowvb/20150427_124136.jpg) (http://postimg.cc/image/exsanowvb/)

(http://s12.postimg.cc/wbx760to9/20150427_124243.jpg) (http://postimg.cc/image/wbx760to9/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HMHausman on April 27, 2015, 03:38:08 PM
Giant Leaf on Potted Mango Tree

Greetings. I have a 3gal Pram Kai Mea that I would like to take budwood from. However, the tree has grown two giant leaves among what I would categorize as normal sized leaves. Is the abnormality anything to be concerned about? My concern is mainly preventing introduction of disease to the tree targeted for the graft. Pics of the PKM below. Thanks!

(http://s15.postimg.cc/iqi0d5713/20150427_124052.jpg) (http://postimg.cc/image/iqi0d5713/)

(http://s23.postimg.cc/exsanowvb/20150427_124136.jpg) (http://postimg.cc/image/exsanowvb/)

(http://s12.postimg.cc/wbx760to9/20150427_124243.jpg) (http://postimg.cc/image/wbx760to9/)

A couple of questions.  First, I am assuming that the larger leaves producing stem is above the graft line.  Its hard to see, but if it is the root stock producing the leaves that could be one explanation.  Secondly, was the tree exposed to the same lighting conditions throughout?  Sometimes leaves that have had filtered light grow larger to gather light that is less intense than otherwise experienced generally. Perhaps part of the tree was grown under some shading as in under some shade cloth? If it isn't one of these two things then I have no idea.  I have never seen such a thing happen.  That being said, I wouldn't be concerned about larger leaves.  As far as I am concerned, until proven otherwise, this would be something to marvel at rather than to fret about.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangorific on April 27, 2015, 10:16:32 PM

A couple of questions.  First, I am assuming that the larger leaves producing stem is above the graft line.  Its hard to see, but if it is the root stock producing the leaves that could be one explanation.  Secondly, was the tree exposed to the same lighting conditions throughout?  Sometimes leaves that have had filtered light grow larger to gather light that is less intense than otherwise experienced generally. Perhaps part of the tree was grown under some shading as in under some shade cloth? If it isn't one of these two things then I have no idea.  I have never seen such a thing happen.  That being said, I wouldn't be concerned about larger leaves.  As far as I am concerned, until proven otherwise, this would be something to marvel at rather than to fret about.

Thanks Harry. Perhaps one day the tree will give me giant mutant sized mangos :)

To answer your questions though - The leaves are above the root stock and the giant leaves developed in full sun. Strange eh? Thanks again for your feedback.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on May 08, 2015, 05:25:38 PM
I noticed today that some of the new growth on my Cogshall is showing signs of minors and/or iron deficiency.  I've seen this before and I've given the tree a foliar spray of Southern Ag Citrus Nutritional Spray mixed with their Liguid Iron.  Has always worked well.  But with the tree holding fruit I'm wondering if I should hold off until after harvest, probably sometime in July. 
Any thoughts on this?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on May 08, 2015, 09:13:03 PM
It could green up on its own by July. Hotter temps are more conducive to absorption of micronutes. My carrie used to do that every year until I gave so much mulch that it was able to get enough iron from the compost.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: RichardN on May 16, 2015, 12:39:20 AM
Giant Leaf on Potted Mango Tree

Greetings. I have a 3gal Pram Kai Mea that I would like to take budwood from. However, the tree has grown two giant leaves among what I would categorize as normal sized leaves. Is the abnormality anything to be concerned about? My concern is mainly preventing introduction of disease to the tree targeted for the graft. Pics of the PKM below. Thanks!

(http://s15.postimg.cc/iqi0d5713/20150427_124052.jpg) (http://postimg.cc/image/iqi0d5713/)

(http://s23.postimg.cc/exsanowvb/20150427_124136.jpg) (http://postimg.cc/image/exsanowvb/)

(http://s12.postimg.cc/wbx760to9/20150427_124243.jpg) (http://postimg.cc/image/wbx760to9/)
I have NDM that produced abnormal large size leaves. I recalled applying fertilizer when the buds where swelling up. By this the nitrogen push the young buds into large abnormal sizes.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fisherking73 on May 17, 2015, 08:29:39 PM
Posting these pics for a new friend who is not a forum member. He has had this kent for 3 years, says this has been happening to his tree since pruning last year.  Any thoughts?


(http://s15.postimg.cc/l6nyr6c4n/20150517_193350_1.jpg) (http://postimg.cc/image/l6nyr6c4n/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 18, 2015, 12:04:09 AM
??? More pictures and info, please.  Perhaps several things are happening at once.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: phoenixtropicals on May 18, 2015, 01:09:36 AM
Looks kind of silky.  Spider eggs maybe.  Maybe it could be good bug for your garden.  I don't use any insecticide in my garden and have never had any real issues.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fisherking73 on May 18, 2015, 09:23:06 AM
??? More pictures and info, please.  Perhaps several things are happening at once.

Here is another pic, let me know what kind of info would be helpful.  He seems to be doing the right things, fertilizing every 4-6 week or so.  Copper spraying when needed which he said not very often this year cuz bloom was poor and no signs of anth. or PM.  Beautiful lush pickering is about 10 yds away with no issues. Here is one more pic I got yesterday of a few other leaves. It has a mix of these weird leaves and regular leaves. Tree is 3 years old grafted.  Full sun, has been in ground for almost 3 years. Prunes in late summer early fall after pickering finishes fruiting as his time guideline. No pesticides used only neem oil if needed.

(http://s11.postimg.cc/ei0y6k8n3/20150517_193354_1.jpg) (http://postimg.cc/image/ei0y6k8n3/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: From the sea on May 18, 2015, 10:15:38 AM
may be fert burn
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on May 18, 2015, 07:10:55 PM
Per what Har taught me, I'd say powdery mildew.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Pancrazio on May 18, 2015, 08:58:24 PM
I guess i have white flies on my mangoes.

(http://i.imgur.com/IbhBu72.jpg?1)

What i should do? I don't know any active chemical compound to fight these while saving the edibility of fruits. I have been suggested with Flonicamid, but I'm unsure. Does anyone have any tip?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 19, 2015, 09:58:30 AM
Last picture looks like Spider-Mites, not whitefly.

Previous picture looks like Powdery Mildew: dry weather, but with high air humidity during pleasantly cool nights, is ideal for PM.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Pancrazio on May 19, 2015, 08:31:21 PM
Thank you Har. Things must be pretty bad for my mango, because I feel on the leaves the classical sticky you get from aphids. But if they are spider mites i think that the summer and the rain will take care of them.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 19, 2015, 10:58:23 PM
Pesticidal use of plain water, applied forcefully to the underside of the leaves, will work immediately.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mr. Clean on July 02, 2015, 09:22:10 PM
I realized that there is another mango disease.... It's called "mango hoarding."  I have 28 mango tree varieties in-ground; my orchard seems to have the mango hoarding disease.   ;)  Is there any known treatment for this disease? Or am I doomed to plant more and more mango trees?

Of course I mention this with the 23rd Annual International Mango Festival at Fairchild is a little over a week away... 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on July 02, 2015, 10:24:31 PM
I realized that there is another mango disease.... It's called "mango hoarding."  I have 28 mango tree varieties in-ground; my orchard seems to have the mango hoarding disease.   ;)  Is there any known treatment for this disease? Or am I doomed to plant more and more mango trees?

Of course I mention this with the 23rd Annual International Mango Festival at Fairchild is a little over a week away...

The only treatment is to buy more.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Broman on July 16, 2015, 01:36:16 PM
Hello friends, I found this strange knot on my Valencia Pride. Any ideas of what it could be?
(http://s21.postimg.cc/x0um5pib7/image.jpg) (http://postimg.cc/image/x0um5pib7/)

(http://s21.postimg.cc/duhf2j1tf/image.jpg) (http://postimg.cc/image/duhf2j1tf/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 16, 2015, 08:04:50 PM
I don't know what that is.

I'd cut that branch off about an inch below that wound, leaving those two leaves and buds.
Check for discoloration in the wood, which should be white/cream-colored.  If there is discoloration, sanitize your clippers (with alcohol or chlorox)and cut off another inch or two of that branch, and look again.  Then sanitize your clippers--- before cutting anywhere else.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Clay on July 17, 2015, 12:45:35 AM
My Tequila Sunrise mango tree has been in the ground for about five weeks now. It has one new branch with new leaves just above the graft, and at the very top, it has a bunch of white tips (buds?) that look like they are getting ready to shoot out new leaves or branches.   In the last two days, it has started developing brown spots on the very top leaves (see photos). The lower leaves still look healthy and green. Got any clue why the top leaves would be turning brown?  Should I worry?

(http://glennhome.net/media/Brown_Spots1.jpg)

(http://glennhome.net/media/Healthy_Leaves.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on July 17, 2015, 08:16:17 AM
My Tequila Sunrise mango tree has been in the ground for about five weeks now. It has one new branch with new leaves just above the graft, and at the very top, it has a bunch of white tips (buds?) that look like they are getting ready to shoot out new leaves or branches.   In the last two days, it has started developing brown spots on the very top leaves (see photos). The lower leaves still look healthy and green. Got any clue why the top leaves would be turning brown?  Should I worry?

(http://glennhome.net/media/Brown_Spots1.jpg)

(http://glennhome.net/media/Healthy_Leaves.jpg)

Leaf scorch and probably initial leaf necrosis.  What's causing it is a guess as I don't have any information about your culture, what conditions, food, pest control the plant has been receiving.  Have you been hitting it hard with fertilizer?  Sun burn?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Clay on July 17, 2015, 10:57:58 AM
Leaf scorch and probably initial leaf necrosis.  What's causing it is a guess as I don't have any information about your culture, what conditions, food, pest control the plant has been receiving.  Have you been hitting it hard with fertilizer?  Sun burn?

This has just happened in the last few days. It has been nice and sunny here this week. If this would have happened right after planting the tree in the ground, I would suspect sunburn/leaf scorch. But it has been in the ground over a month now, the rest of the plant looks healthy, and it is starting to shoot out its first new growth, so I am baffled.

I originally dug the hole 2+ feet deep, and loosened the soil below with an auger for another two feet. When I refilled the hole, I added a bit of Avocado @ Citrus Organic Fertilizer and some organic compost. The tree gets deep watering once a week. I have not added any other amendments or sprays.  No signs of insects or disease so far. Mostly I've just left it alone and it has been looking good, until this.

Any other thoughts?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on July 17, 2015, 02:16:23 PM
Uh oh....

When I refilled the hole, I added a bit of Avocado @ Citrus Organic Fertilizer and some organic compost. The tree gets deep watering once a week.

If your native soil is heavy, clay like and drains poorly, you just done rotted out your root system.  By amending tight soils you construct a pot in the ground which does not drain, nor will the roots ever penetrate and become established in the native soil. 
http://puyallup.wsu.edu/wp-content/uploads/sites/403/2015/03/soil-amendments.pdf (http://puyallup.wsu.edu/wp-content/uploads/sites/403/2015/03/soil-amendments.pdf)

The compost goes ON, not in the soil.

Mark
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on July 17, 2015, 02:51:59 PM
To add to Maek's post above, do not add fertilizer in the hole as that will burn the roots and be a contributing factor to your tree's damage.  Always add granular fertilizer to the top of tye soil, liquid fertilizer  can be sprayed and/or drenched.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on July 17, 2015, 03:05:28 PM
I have planted probably 10,000 trees and other stuff on my property in the last 10 years including grapevines.  Every single one got a 12 mo. slow release Polyon 19-4-9 with micros.  I just throw a handful at the base of the seedling after it's been planted and move on. Growth and health is incredible. Never put fertilizer in the hole.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on July 17, 2015, 03:35:10 PM
I have planted probably 10,000 trees and other stuff on my property in the last 10 years including grapevines.  Every single one got a 12 mo. slow release Polyon 19-4-9 with micros.  I just throw a handful at the base of the seedling after it's been planted and move on. Growth and health is incredible. Never put fertilizer in the hole.

That is kind of high on the nitrogen for a mango.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Clay on July 18, 2015, 01:41:28 AM
Wow, thanks for the great feedback! So, is there no way to improve the clay soils which lie under my topsoil? And considering the new growth on the tree and overall good health of the rest of the tree, are the brown spots on these top leaves just the beginning of something bad? Or is it just sunburn that the tree will recover from?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 18, 2015, 05:41:52 AM
Amend clay with sand and charcoal/ bio-char.

Some added Manganese may help the current situation.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on July 18, 2015, 08:37:47 AM
Amend clay with sand and charcoal/ bio-char.

Some added Manganese may help the current situation.

Won't help at all unless you go 80% sand, 20% clay.  You really should read the link I posted and get the principles of soil structure.

Think of it this way - add a handful of marbles to a big jar of wheat flour. What do you have?  That's right, a big jar of wheat flour.  You have not changed anything, must less the surrounding native soil.

AGAIN, amend from the top down.  NEVER amend backfill in a native clay soil.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on July 18, 2015, 08:40:31 AM
I have planted probably 10,000 trees and other stuff on my property in the last 10 years including grapevines.  Every single one got a 12 mo. slow release Polyon 19-4-9 with micros.  I just throw a handful at the base of the seedling after it's been planted and move on. Growth and health is incredible. Never put fertilizer in the hole.

That is kind of high on the nitrogen for a mango.

Yes it is, but it worked and got me where I wanted to go to initially push foliage.  I got Pickering and Mallika from PIN a couple of years ago and used that high N food. They are both loaded with fruit this year for the first time.  Last year I let the Pickering hold one fruit, topped the Mallika down to 8" tall to increase branching....induce a nice compact profile.

Against the grain of The Herd, I now lightly fertilize with a Peters Classic 20-3-19 with micros sometimes bumping up the K with K2SO4. There has been no fruit drop.  Glad my plants can't read.   ;D
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on July 18, 2015, 08:50:01 AM
Wow, thanks for the great feedback! So, is there no way to improve the clay soils which lie under my topsoil? And considering the new growth on the tree and overall good health of the rest of the tree, are the brown spots on these top leaves just the beginning of something bad? Or is it just sunburn that the tree will recover from?

Don't know for sure until I observe how you planted and then go from there. Let's put it this way.  My cousin recently lost a peach tree he planted last year in his heavy clay.  With the recent heavy spring rains here in Texas, the "pot" he created held water and the root system rotted.  I knew what the answer was gonna be but baited him anyway with a question, "did you amend the backfill with compost?"   His reply, "of course, that's what the label said to do!"  As he blamed the label not owning up to what he did wrong....I said, "cuz, ya done screwed up."  Gave him Dr. Chalker's explanation....he was dumbfounded.  :D
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mr. Clean on July 19, 2015, 12:22:02 PM
About half of my Sweet Tart mangos have developed splits along the top.  Could this be caused by a nutritional deficiency?

(http://s30.postimg.cc/49rua8jy5/Sweet_Tart_Mango_split.jpg) (http://postimg.cc/image/49rua8jy5/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on July 19, 2015, 09:39:31 PM
Sweet Tart can tend to have some shoulder splitting issues under certain conditions,   How wet has the area around the treebeen?  Does the tree h ave good air flow?  I do see thst the ffruit looks reallg dirty.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: jetset516 on July 21, 2015, 01:49:27 PM
I hope it's ok to double post, I posted a few days ago but looks like I'll have a better chance at an answer here...

So my mango tree has several dead branches, I decided to pull/hack some off an this is what I found...Nasty suckers...took the adult one half an hour swimming in a pail of chlorine to finally die!
I live in southern Florida, Hollywood to be exact. This tree, I've been told is a "mini" mango tree. Hasn't bore fruit in years, but back when it did they did tend to be much smaller than the normal kind.

Anyways thanks for any and all info!

(http://s11.postimg.cc/r2fb4yhn3/DSCF3911.jpg) (http://postimg.cc/image/r2fb4yhn3/)

Here's the tree. Lots of dead trunk there, hopefully I an salvage the tree...



(http://s17.postimg.cc/xr41k8hbf/DSCF3913.jpg) (http://postimg.cc/image/xr41k8hbf/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mr. Clean on July 23, 2015, 08:50:58 PM
Sweet Tart can tend to have some shoulder splitting issues under certain conditions,   How wet has the area around the treebeen?  Does the tree h ave good air flow?  I do see thst the ffruit looks reallg dirty.

It gets daily micro-irrigation.  I have sugar sand, so the water drains quickly.  I am about 10 miles from the coast; it gets very hot and humid here, which creates "dirty" mangoes.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: sobars_machado on August 03, 2015, 05:59:15 PM
Hello,

I have planted 13 grafted mango seedlings of different varieties at the end of April this year; they are growing well. Since the end of June, monsoon/rain started and it is raining almost everyday. Recently the new leaves of some of them have developed those black spots. The new terminal buds of those same plants have also turned black and died. Does anybody know what kind of disease it is and what kind of treatment is recommended to save the plants from this?

Below are the photos showing those spots on 2 different plants.

Thank you very much in advance for your guidance.

Sobars

Mumbai, India

(http://s29.postimg.cc/lmv1016g3/IMG_20150802_WA0011.jpg) (http://postimg.cc/image/lmv1016g3/)

(http://s29.postimg.cc/wxt3annxf/IMG_20150802_WA0012.jpg) (http://postimg.cc/image/wxt3annxf/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: strkpr00 on August 03, 2015, 07:42:14 PM
I hope it's ok to double post, I posted a few days ago but looks like I'll have a better chance at an answer here...

So my mango tree has several dead branches, I decided to pull/hack some off an this is what I found...Nasty suckers...took the adult one half an hour swimming in a pail of chlorine to finally die!
I live in southern Florida, Hollywood to be exact. This tree, I've been told is a "mini" mango tree. Hasn't bore fruit in years, but back when it did they did tend to be much smaller than the normal kind.

Anyways thanks for any and all info!

(http://s11.postimg.cc/r2fb4yhn3/DSCF3911.jpg) (http://postimg.cc/image/r2fb4yhn3/)

Here's the tree. Lots of dead trunk there, hopefully I an salvage the tree...



(http://s17.postimg.cc/xr41k8hbf/DSCF3913.jpg) (http://postimg.cc/image/xr41k8hbf/)

If I really liked the mangoes I would aggressively prune till I got clean wood/branches, dispose of all debris, and maybe treat with Bayers Tree Shrub,  Protect & Feed. next years fruit might be safe to eat.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on August 03, 2015, 07:48:00 PM
Hello,

I have planted 13 grafted mango seedlings of different varieties at the end of April this year; they are growing well. Since the end of June, monsoon/rain started and it is raining almost everyday. Recently the new leaves of some of them have developed those black spots. The new terminal buds of those same plants have also turned black and died. Does anybody know what kind of disease it is and what kind of treatment is recommended to save the plants from this?

Below are the photos showing those spots on 2 different plants.

Thank you very much in advance for your guidance.

Sobars

Mumbai, India

(http://s29.postimg.cc/lmv1016g3/IMG_20150802_WA0011.jpg) (http://postimg.cc/image/lmv1016g3/)

(http://s29.postimg.cc/wxt3annxf/IMG_20150802_WA0012.jpg) (http://postimg.cc/image/wxt3annxf/)

I responded to you in your original post.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on August 03, 2015, 07:57:46 PM
I hope it's ok to double post, I posted a few days ago but looks like I'll have a better chance at an answer here...

So my mango tree has several dead branches, I decided to pull/hack some off an this is what I found...Nasty suckers...took the adult one half an hour swimming in a pail of chlorine to finally die!
I live in southern Florida, Hollywood to be exact. This tree, I've been told is a "mini" mango tree. Hasn't bore fruit in years, but back when it did they did tend to be much smaller than the normal kind.

Anyways thanks for any and all info!

(http://s11.postimg.cc/r2fb4yhn3/DSCF3911.jpg) (http://postimg.cc/image/r2fb4yhn3/)

Here's the tree. Lots of dead trunk there, hopefully I an salvage the tree...



(http://s17.postimg.cc/xr41k8hbf/DSCF3913.jpg) (http://postimg.cc/image/xr41k8hbf/)

If I really liked the mangoes I would aggressively prune till I got clean wood/branches, dispose of all debris, and maybe treat with Bayers Tree Shrub,  Protect & Feed. next years fruit might be safe to eat.

I am not sure what Bayer product you are referring to,  Bayer Avanced in the red bottle?  If so, no need to use.tbis product.   If you are going to use Bayer Advanced,  use the one in the blue bottle, its for fruits and veggies.  You could also get a commercial grade imidacloprod if that is needed.

Where were those beetles?

I would cut the tree back pretty severely and fertilize.  Your initial concern should be good growth and return the tree to health.  Of bigger concern is to see what the interior wood looks like when you cut it back.

If it is that bad, you should determine if the efforts are wortb trying to save and turn the tree around.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 03, 2015, 10:04:36 PM
Sobars,

Your mangos appear to have a bacterial leaf spot--- which thrives in extremely wet conditions where also soil splashes up.

You can spray with copper and other products labeled to kill bacteria on plants. 

A clear plastic roof to keep rain off the small plants, and pruning off the affected leaves and tip, would be a non-chemical approach,
probably more effective than frequent spraying.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on August 03, 2015, 10:09:36 PM
Sobars,

Your mangos appear to have a bacterial leaf spot--- which thrives in extremely wet conditions where also soil splashes up.

You can spray with copper and other products labeled to kill bacteria on plants. 

A clear plastic roof to keep rain off the small plants, and pruning off the affected leaves and tip, would be a non-chemical approach,
probably more effective than frequent spraying.

I had already posted that in his other post.  To add, it can be highly contagious and easily spread.

http://tropicalfruitforum.com/index.php?topic=17079.0 (http://tropicalfruitforum.com/index.php?topic=17079.0)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: BrettBorders on August 04, 2015, 09:47:03 AM
My Maha Chanok has been infested with black powder on interior leaves and branches, and also white powdery spots.  I started a year ago, mildly and I ignored it due to being "busy" -  but now it's getting worse. What's the diagnosis and cure?
(http://s12.postimg.cc/51t0bxjqh/IMG_20150803_081717.jpg) (http://postimg.cc/image/51t0bxjqh/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on August 04, 2015, 12:22:44 PM
I see some scale.  It is from pests on it and/or surrounding trees.  I would spray with Sevin, with a teaspoon of liquid dish soap added, being sure to spray top and undersides of all leaves.  The sooty mold is from the pests.  Once you cintrol or erradicate the pest, the sooty mold will stop.  You can wipe the sooty mold off the leaves or leave it be.  The new growth should come out clean and blooms will be unaffected.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on August 04, 2015, 01:43:11 PM
Does look like scale damage with the soot and all. And probably has attracted ants too.  I've had great luck with dormant oil and malathion best applied in the soft stage but will kill the armored types by smothering them.

good read
http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7408.html (http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7408.html)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: BrettBorders on August 04, 2015, 01:59:43 PM
Does look like scale damage with the soot and all. And probably has attracted ants too.  I've had great luck with dormant oil and malathion best applied in the soft stage but will kill the armored types by smothering them.

good read
http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7408.html (http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7408.html)

Thanks!

I don't see too many pests on the tree besides ants. sure there are a few leaf notches and flying things, but no major plague I've witnessed.  There is an ant colony living in the rootball. Do I need to kill off the ants?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on August 04, 2015, 02:09:34 PM
Does look like scale damage with the soot and all. And probably has attracted ants too.  I've had great luck with dormant oil and malathion best applied in the soft stage but will kill the armored types by smothering them.

good read
http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7408.html (http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7408.html)

Thanks!

I don't see too many pests on the tree besides ants. sure there are a few leaf notches and flying things, but no major plague I've witnessed.  There is an ant colony living in the rootball. Do I need to kill off the ants?

Brett - you are missing the point.  The sooty mold does not just appear for the hell of it. 

"Sooty mold is the common name applied to several species of fungi that grow on honeydew secretions on plant parts and other surfaces. The fungi’s dark, threadlike growth (mycelium) gives plants or other substrates the appearance of being covered with a layer of soot.

Sooty molds don’t infect plants but grow on surfaces where honeydew deposits accumulate. Honeydew is a sweet, sticky liquid that plant-sucking insects excrete as they ingest large quantities of sap from a plant. Because the insect can’t completely utilize all the nutrients in this large volume of fluid, it assimilates what it needs and excretes the rest as “honeydew.” Wherever honeydew lands—e.g., leaves, twigs, fruit, yard furniture, concrete, sidewalks, or statuary—sooty molds can become established."

So, there are "pests" either on the Maha or surrounding tree(s).  If there are ants in the tree, they are most likely farming what is there (scale, aphids, mealy bugs, etc.).  I would personally stay away from malathion.  Neem does not work well here in SFla plus at this time of year, to treat with an oil, you would need to use a product that is non-photosensitive and even so, do not spray in daytime sun or during high temperatures.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on August 04, 2015, 04:24:30 PM
Ron, why would  you stay from malathion?  It's much more effective than Sevin plus has a side benefit of being less toxic, is broken down faster by the elements.  Neem is worthless compared to Malathion.

Soot is a side product of scale and if you don't get a handle on it it really screws up photosynthesis.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on August 04, 2015, 04:37:44 PM
Ron, why would  you stay from malathion?  It's much more effective than Sevin plus has a side benefit of being less toxic, is broken down faster by the elements.  Neem is worthless compared to Malathion.

Soot is a side product of scale and if you don't get a handle on it it really screws up photosynthesis.

Malathion has been shyed away from for years here.  I am not saying its not or cannot be effective.

I agree 100%, neem is useless.  Sooty mold is a byproduct of more than just scale.  It can be the result from any sucking insect.  I also agree that isolated sooty mold is not a great harm, widespread sooty mold can cause a domino effect of issues.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: BrettBorders on August 04, 2015, 06:14:23 PM
Yes the is orange, waxy "scale" under the Maha leaves sometimes. I have tried spraying it off with a water hose and wiping the sooty mold off with a wet sponge but it just comes back. Now the tree is getting too large I will try treating it with a pesticide.

I'm pretty sure the ant colony in the rootball is responsible for a lot of SAP sucking. They go after new shoots. Any safe, non systemic way to kill the ant colony that comes with most nursery trees?

If I want to go the Sevin + dishsoap route...how often to spray the whole plant leaves top and bottim.?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: sobars_machado on August 05, 2015, 07:14:41 AM
Hi Brett,

As for killing the ants, there is one easy and effective solution: mix 5 part sugar + 1 part boric powder + enough water to make it like a paste. put some of it around the area where the ants will get attracted; let them eat and within a week that ant colony will be gone. Just let them eat that sugar thing, don't disturb them, so they can eat and also carry it to their nest in order for the queen to eat as well.

If those ants are sweet loving then the above will work, but if they are protin loving then you will need to mix the boric powder in some other food, for example peanut butter.

Good luck.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: savemejebus on August 18, 2015, 05:06:23 PM
Any ideas if this is disease or insect related? All over the leaves of our Kent tree - fruit were awful this year but tree still looks otherwise healthy.


(http://s27.postimg.cc/mt1tutycf/IMAG0253.jpg) (http://postimg.cc/image/mt1tutycf/)

(http://s27.postimg.cc/weveb4pi7/IMAG0255.jpg) (http://postimg.cc/image/weveb4pi7/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 19, 2015, 10:01:40 PM
Although it may be a fungal infection, the pattern looks like a deficiency of Potassium.  I have seen this speckled-pattern Potassium deficiency on several unrelated species.  As deficiency of Potassium usually causes burns of leaf tips and edges, I'm not sure why there sometimes is speckling instead.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rliou on August 25, 2015, 12:23:38 PM
My peach cobbler is filled with ants and the leaves and stems have these brown elevated raised circular thing.  It looks like they might be farming or collecting it.  Is it just sap leakage or is this something i need to worry about?
(http://s9.postimg.cc/to38hgu8b/image.jpg) (http://postimg.cc/image/to38hgu8b/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Dangermouse01 on August 25, 2015, 04:18:36 PM
My peach cobbler is filled with ants and the leaves and stems have these brown elevated raised circular thing.  It looks like they might be farming or collecting it.  Is it just sap leakage or is this something i need to worry about?
(http://s9.postimg.cc/to38hgu8b/image.jpg) (http://postimg.cc/image/to38hgu8b/)

You've got scale.

DM
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on August 25, 2015, 07:38:34 PM
Do you live adjacent to a freshwater canal? That looks similar to "canal disease," a phrase that I just invented to describe the the myriad issues that plague mango trees along a canal, including fungal diseases (presumably caused by the increased humidity) and lack of nutrition caused by the junk (aka limestone) that they piled up under the soil along the canal.


Any ideas if this is disease or insect related? All over the leaves of our Kent tree - fruit were awful this year but tree still looks otherwise healthy.


(http://s27.postimg.cc/mt1tutycf/IMAG0253.jpg) (http://postimg.cc/image/mt1tutycf/)

(http://s27.postimg.cc/weveb4pi7/IMAG0255.jpg) (http://postimg.cc/image/weveb4pi7/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: nakulv1 on October 10, 2015, 08:13:01 AM
Is this mango malformation disease?

https://goo.gl/photos/1pcfCaqdxWE27wYt8 (https://goo.gl/photos/1pcfCaqdxWE27wYt8)

https://goo.gl/photos/DiVe2RcSQHtRwi9FA (https://goo.gl/photos/DiVe2RcSQHtRwi9FA)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: nakulv1 on October 10, 2015, 04:49:39 PM
Is this mango malformation disease? I wasn't aware of this disease back when I purchased the plant from the nursery.
(http://s28.postimg.cc/4e9phngax/P_20151010_170436.jpg) (http://postimg.cc/image/4e9phngax/)

(http://s23.postimg.cc/7hxb0yslz/P_20151010_170430.jpg) (http://postimg.cc/image/7hxb0yslz/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: raimeiken on October 10, 2015, 05:32:56 PM
Is sap oozing from the trunk and branches normal? or is it a sign of a disease or over watering?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on October 11, 2015, 10:25:25 AM
Is sap oozing from the trunk and branches normal? or is it a sign of a disease or over watering?

Please post pictures.  We would have to see what you are referring to before providing any type of diagnosis.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: raimeiken on October 11, 2015, 06:21:05 PM
Sorry for the lack of pictures. Here's two of my trees showing a little bit of sap oozing out of the main trunk. This started in the middle of summer. The trees are growing fine. Flushing new leaves right now too.

(http://i.imgur.com/gk9imV2.jpg)

(http://i.imgur.com/QneYeJA.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on October 11, 2015, 07:57:43 PM
What varieties are they?

From exterior sight, looks similar to gummosis.  There are some other diseases that can cause this.  Do any of the limbs have any die back?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: raimeiken on October 11, 2015, 09:26:42 PM
one is Lemon zest and the other is coconut cream. No die back from both trees yet. How can it be treated?

Will spraying copper fungicide on the oozing area be enough?  Or should i spray the entire tree?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 11, 2015, 11:15:16 PM
It does look kind of serious--- probably a bacterial infection..  I suggest trying Copper spray on the bark(wear eye protection), alternated with Potassium Phosphite (such as Foliar Phosphite, K-Phite, Plant Doctor), each once a month, through early Spring.

If the oozing still occurs next Spring or Summer, give up on the friendly stuff, and use one or more conventional systemic fungicides / bactericides, and remove all fruit as they appear.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on October 12, 2015, 10:50:39 AM
Last year, there were a few locations where PPK/Lemon Meringue trees had a bleeding sap issues on more mature trees.  These trees had a good amount of bleeding and some exhibited dieback and massive leaf drop on certain limbs.  On one tree in Broward County, samples were cut and sent to TREC in Miami for analysis (I have pictures of the cut samples should anyone want to see them).  Below you will find the report.

(http://s10.postimg.cc/xrqdbc58l/PPK_disease_Page_1.jpg) (http://postimg.cc/image/xrqdbc58l/)

They also recommended applications of MycoStim and Exel LG Foliar Fertilizer.

In another location in Palm Beach County, the tree was sprayed with fungicide and fertilized and otherwise let be, it came back and flushed and did not have any further detrimental damage.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on October 12, 2015, 11:14:48 AM
Could this also be the result of an injury at the bleed site, for example, sun burn or delayed response to cold damage?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: raimeiken on October 12, 2015, 06:51:17 PM
Thanks for the responses guys! It helps a lot. I'll try spraying them with some copper fungicide that I have and continue my foliar feeding. I hope they recover from this. After reading that report, it doesn't seem promising since they recommend pruning instead of fungicides. I can't really cut back my trees at those points on where they're bleeding from since those are the main trunk/stems.

Should I scrape the sap off the trunks and then spray with fungicide? Or should i leave the sap on the trees?

I think what caused this is from the stress of high temperatures since we had some pretty hot weeks this past summer. Over 115f days on end.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 12, 2015, 09:42:13 PM
bsbullie, thank you for that report!

I have seen this on one side of a 'Haden' mango in Jupiter.   The stress was provided by a strong strap that was used to right the tree after Hurricane Wilma, and left there until it had almost entirely girdled the main trunk.
Title: Re: Black spot or not?
Post by: Mangofique on October 28, 2015, 07:08:52 AM
dear all,

I recently received pictures of a consignment of mango showing these symptoms. While my initial reaction was bacterial spot, I am wondering if this was more fungal in origin.

does anyone have any ideas?

regards,
Mp.

(http://s29.postimg.cc/6f05r9q03/bs1.jpg) (http://postimg.cc/image/6f05r9q03/)

(http://s29.postimg.cc/h33wq3zz7/iphone_pictures_090.jpg) (http://postimg.cc/image/h33wq3zz7/)
Title: Re: Black spot or not?
Post by: bsbullie on October 28, 2015, 07:16:21 AM
dear all,

I recently received pictures of a consignment of mango showing these symptoms. While my initial reaction was bacterial spot, I am wondering if this was more fungal in origin.

does anyone have any ideas?

regards,
Mp.

(http://s29.postimg.cc/6f05r9q03/bs1.jpg) (http://postimg.cc/image/6f05r9q03/)

(http://s29.postimg.cc/h33wq3zz7/iphone_pictures_090.jpg) (http://postimg.cc/image/h33wq3zz7/)

Where were the mangoes grown and what variety?   Is there any damage to the tree/leaves?  It doesn't look like the damage goes that deep i to the fruit.  Bacterial Blac Spot will caise open lesions, oozing from the lesions and the damage will go deep into the flesh. 
Title: Re: Black spot or not?
Post by: Mangofique on October 28, 2015, 07:47:38 AM
hi,

Thank you for the reply.... This is Egyptian Keitt, and sea freighted into Europe.


I am not sure about the field that this was grown in, as we are only seeing the harvested fruit. As this fruit ripens these lesions do tend to create decay further into the flesh.


regards,
MP

dear all,

I recently received pictures of a consignment of mango showing these symptoms. While my initial reaction was bacterial spot, I am wondering if this was more fungal in origin.

does anyone have any ideas?

regards,
Mp.

(http://s29.postimg.cc/6f05r9q03/bs1.jpg) (http://postimg.cc/image/6f05r9q03/)

(http://s29.postimg.cc/h33wq3zz7/iphone_pictures_090.jpg) (http://postimg.cc/image/h33wq3zz7/)

Where were the mangoes grown and what variety?   Is there any damage to the tree/leaves?  It doesn't look like the damage goes that deep i to the fruit.  Bacterial Blac Spot will caise open lesions, oozing from the lesions and the damage will go deep into the flesh.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on October 28, 2015, 07:52:16 AM
With Bacterial Black Spot, the damage occurs while fruit is on the tree.  In another thread, i pisted an excellent publication on Bacterial Black Spot that explains it and has detailed pictures.   I have also seen it first hsnd here in Florida.   It us very contagious,  even after fruit is harvested.  If you do a search you should be able to find my post.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: raimeiken on October 30, 2015, 06:51:11 PM
I might have just figured out the problem with my mango trees. Quite a bit of the new leaves that have been flushing are very deformed, stunted, and just the wrong color. All of that including the oozing sap that I posted above a few weeks ago. So I searched on google and found that Boron deficiency causes this to mango trees and so does gummosis!

Here's a snippet from the source:

https://books.google.com/books?id=oloEhPYqE8QC&pg=PA423&lpg=PA423&dq=boron+deficient+mango&source=bl&ots=no_0smVQ4Z&sig=yhsD_UtMlDYGUwKz1fYtipl2dtY&hl=en&sa=X&ved=0CGYQ6AEwC2oVChMIh_v81J7ryAIVVuZjCh1O3ARH#v=onepage&q=boron%20deficient%20mango&f=false (https://books.google.com/books?id=oloEhPYqE8QC&pg=PA423&lpg=PA423&dq=boron+deficient+mango&source=bl&ots=no_0smVQ4Z&sig=yhsD_UtMlDYGUwKz1fYtipl2dtY&hl=en&sa=X&ved=0CGYQ6AEwC2oVChMIh_v81J7ryAIVVuZjCh1O3ARH#v=onepage&q=boron%20deficient%20mango&f=false)

(http://i.imgur.com/uBzgx7K.png)

It's too bad that's all there is available in that preview of that book on the subject, it gets cut off at the bottom there.

So how does one remedy boron deficiency? is there a product you guys use for this?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Brev Grower on October 31, 2015, 03:05:44 AM
So how does one remedy boron deficiency? is there a product you guys use for this

You can sprinkle some borax around the dripline of the tree and then water it in. Be careful though not to use too much because then you will be dealing with B toxicity. Roach killing powders are usually made of Borax. You can find them at a dollar store around here!  8)

E.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on October 31, 2015, 06:23:04 AM
So how does one remedy boron deficiency? is there a product you guys use for this

You can sprinkle some borax around the dripline of the tree and then water it in. Be careful though not to use too much because then you will be dealing with B toxicity. Roach killing powders are usually made of Borax. You can find them at a dollar store around here!  8)

E.

No, do not recommend this.  Using a quality Palm fertilizer and if need be supplement with a liquid minor boost and you should have what you need in terms of boron.  Nutrient deficiency is the problem when using all purpose or fertilizers just not meant for the growing conditions.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: raimeiken on October 31, 2015, 04:00:26 PM
So how does one remedy boron deficiency? is there a product you guys use for this

You can sprinkle some borax around the dripline of the tree and then water it in. Be careful though not to use too much because then you will be dealing with B toxicity. Roach killing powders are usually made of Borax. You can find them at a dollar store around here!  8)

E.

No, do not recommend this.  Using a quality Palm fertilizer and if need be supplement with a liquid minor boost and you should have what you need in terms of boron.  Nutrient deficiency is the problem when using all purpose or fertilizers just not meant for the growing conditions.

yeah I'm not going to mess with Borax. I've been using Espoma's Citrus-tone on my mangoes and also Southern AG's Citrus nutritional spray, which both apparently do not have boron. I found another product by Southern AG that I'll use next time.

It's called 'Essential Minor Elements' in granular form and CONTAINS: Magnesium 8%, Manganese 2%, Iron 5%, Sulfur 8%, Copper .25%, Zinc 0.5%, Boron .03%.

Do you think I should wait until spring to apply it in the soil?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: merce3 on December 31, 2015, 11:21:44 AM
does anyone know what's going on with this lancetilla? the leaf edges are drying and the new leaves are curled and stunted. i want to hit it with a foliar, but want to check here first.

(http://i.imgur.com/W4cebPvl.jpg)
(http://i.imgur.com/p9qmfVZl.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: oneliahz@aol.com on January 07, 2016, 10:23:41 AM
Good morning everyone my name is onelia, i m loosing the battle with my mango trees, i have a jullie mango and each leave has lots of tiny black dots on it. i have spray with copper almost every week. nothing changes as a new leaves comes out it gets dost right away. please help me
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on January 07, 2016, 11:19:18 AM
Good morning everyone my name is onelia, i m loosing the battle with my mango trees, i have a jullie mango and each leave has lots of tiny black dots on it. i have spray with copper almost every week. nothing changes as a new leaves comes out it gets dost right away. please help me

Reace it with a Juliette if you want the Julie flavor and characteristics.   Julies are known to be problem childs in the State of Florida.   I also would not want to be spraying my tree every week with copper.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Raulglezruiz on January 26, 2016, 10:03:20 AM
Please help this sickness is appearing on my Pineaple Pleasure and Pimsanemun any idea how to get rid of?
(http://s15.postimg.cc/8xlhq43l3/IMG_20160120_181305.jpg) (http://postimg.cc/image/8xlhq43l3/)

(http://s30.postimg.cc/whbkh3uf1/IMG_20160120_181237.jpg) (http://postimg.cc/image/whbkh3uf1/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gunnar429 on January 26, 2016, 10:39:58 AM
Please help this sickness is appearing on my Pineaple Pleasure and Pimsanemun any idea how to get rid of?
(http://s15.postimg.cc/8xlhq43l3/IMG_20160120_181305.jpg) (http://postimg.cc/image/8xlhq43l3/)

(http://s30.postimg.cc/whbkh3uf1/IMG_20160120_181237.jpg) (http://postimg.cc/image/whbkh3uf1/)

No, not Pineapple Pleasure!!!  :o :(  That mango rocks.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jani on January 26, 2016, 03:39:39 PM
Good morning everyone my name is onelia, i m loosing the battle with my mango trees, i have a jullie mango and each leave has lots of tiny black dots on it. i have spray with copper almost every week. nothing changes as a new leaves comes out it gets dost right away. please help me

Reace it with a Juliette if you want the Julie flavor and characteristics.   Julies are known to be problem childs in the State of Florida.   I also would not want to be spraying my tree every week with copper.

I'm getting the exact same issue with my potted Glenn as Onelia, it's been trying to send new growth for several months and they all get this spotting and shrivel and fall.
Anthracnose?

By the way anyone wants to take this Glenn and Mallika  (in the background) off my hands message me. The Mallika is full of scale. .I have a pretty small yard and there are just no sunny spots left, maybe that's why these two are struggling, so they gotta go but I'll rather see if someone wants them before making them mulch.  They're gonna need some TLC...but both have fruited well before especially the Glenn which has produced at least a dozen or so fruits every year for the past 4. Both around 6 ft high and wide, the Glenn's been trimmed back several times.....


(http://s24.postimg.cc/60a8zjmxd/20160126_073743.jpg) (http://postimg.cc/image/60a8zjmxd/)



(http://s27.postimg.cc/p3frxg4lr/20160126_073754.jpg) (http://postimg.cc/image/p3frxg4lr/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: merce3 on March 23, 2016, 02:03:50 PM
can anyone help me diagnose this problem? the panicles on my rosigold are all wilted including old and new growth. it flowered while in the ground and was growing healthy and everything wilted overnight. we had 30 mph winds the other night and temperatures in the upper 40s. it also rained before the temperature drop. i really don't know what to do to bring it back to life.

(http://i.imgur.com/y5FA8pLl.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Dangermouse01 on March 23, 2016, 04:30:48 PM
Step around the base and see if moles have tunneled around thru the roots. That is usually what I find when I have a small tree that wilts suddenly but will come back when I water it only to be wilted again the next day.

DM
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: merce3 on March 24, 2016, 09:35:56 AM
Step around the base and see if moles have tunneled around thru the roots. That is usually what I find when I have a small tree that wilts suddenly but will come back when I water it only to be wilted again the next day.

DM

No moles... The ground is still saturated too so I am sure it has enough water.

Any other ideas?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on March 24, 2016, 10:24:40 AM
Step around the base and see if moles have tunneled around thru the roots. That is usually what I find when I have a small tree that wilts suddenly but will come back when I water it only to be wilted again the next day.

DM

No moles... The ground is still saturated too so I am sure it has enough water.

Any other ideas?

How big/old is the tree?  I would like to see more pictures of the tree and the base also.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: merce3 on March 24, 2016, 12:45:23 PM
Step around the base and see if moles have tunneled around thru the roots. That is usually what I find when I have a small tree that wilts suddenly but will come back when I water it only to be wilted again the next day.

DM

No moles... The ground is still saturated too so I am sure it has enough water.

Any other ideas?

How big/old is the tree?  I would like to see more pictures of the tree and the base also.

it's not that old. I bought it in the fall and would guess it's about 1.5-2 years old. it is about 4 feet tall.
(http://i.imgur.com/TBymgHNl.gif)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on March 24, 2016, 01:31:46 PM
Step around the base and see if moles have tunneled around thru the roots. That is usually what I find when I have a small tree that wilts suddenly but will come back when I water it only to be wilted again the next day.

DM

No moles... The ground is still saturated too so I am sure it has enough water.

Any other ideas?

How big/old is the tree?  I would like to see more pictures of the tree and the base also.

it's not that old. I bought it in the fall and would guess it's about 1.5-2 years old. it is about 4 feet tall.
(http://i.imgur.com/TBymgHNl.gif)

Without seeing the whole tree, I would say it is a combination of stress from the bloom and lack of water.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: merce3 on March 24, 2016, 05:42:08 PM
Step around the base and see if moles have tunneled around thru the roots. That is usually what I find when I have a small tree that wilts suddenly but will come back when I water it only to be wilted again the next day.

DM

No moles... The ground is still saturated too so I am sure it has enough water.

Any other ideas?

How big/old is the tree?  I would like to see more pictures of the tree and the base also.

it's not that old. I bought it in the fall and would guess it's about 1.5-2 years old. it is about 4 feet tall.
(http://i.imgur.com/TBymgHNl.gif)

Without seeing the whole tree, I would say it is a combination of stress from the bloom and lack of water.

sorry... here are some better pictures. i scratched the surface and it's still moist.

(http://i.imgur.com/oBOBzHyl.jpg)
(http://i.imgur.com/2D0LFgUl.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on March 24, 2016, 06:10:16 PM
Its not the surface that is the issue (which is why just lawn sprinklers are of little help to younger trees).  In general, from the picture,  it looks pretty dry.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on March 24, 2016, 07:39:19 PM
Hard to tell, but the ground looks dry.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: merce3 on March 25, 2016, 08:09:24 AM
It looks dry, but it is still pretty wet. We got a heavy rain last night but it still looks the same... should I clip the droopy particles or do anything else?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: skhan on April 23, 2016, 10:41:21 AM
My Keitt is flushing out and some of the new flushes are looking bad.
(https://farm2.staticflickr.com/1441/26568748206_bfc2021dd3_n.jpg) (https://flic.kr/p/GtMMcC) (https://farm2.staticflickr.com/1674/25989767974_56752a90cc_n.jpg) (https://flic.kr/p/FACmxQ)
I noticed when troubling the new leaves, a skinny brown beetle with a white spot came out. Around the size of an ant, but longer.

Here are some flushes on the same tree that are fine-ish:
(https://farm2.staticflickr.com/1473/26568746516_46676073cc_n.jpg) (https://flic.kr/p/GtMLGu) (https://farm2.staticflickr.com/1694/25989765324_d0b74daa89_n.jpg) (https://flic.kr/p/FACkL9)

Should i remove the diseased looking flushes?
What to should i do?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on April 23, 2016, 10:53:15 PM
I think this is spider mite, but hoping the other forum members will chime in. I'm getting a bad infestation of the same thing on a couple of my mango trees.

My Keitt is flushing out and some of the new flushes are looking bad.
(https://farm2.staticflickr.com/1441/26568748206_bfc2021dd3_n.jpg) (https://flic.kr/p/GtMMcC) (https://farm2.staticflickr.com/1674/25989767974_56752a90cc_n.jpg) (https://flic.kr/p/FACmxQ)
I noticed when troubling the new leaves, a skinny brown beetle with a white spot came out. Around the size of an ant, but longer.

Here are some flushes on the same tree that are fine-ish:
(https://farm2.staticflickr.com/1473/26568746516_46676073cc_n.jpg) (https://flic.kr/p/GtMLGu) (https://farm2.staticflickr.com/1694/25989765324_d0b74daa89_n.jpg) (https://flic.kr/p/FACkL9)

Should i remove the diseased looking flushes?
What to should i do?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on April 23, 2016, 11:48:01 PM
Here are some pictures of mine. Notice all the little bugs in the 3 picture.

(http://s31.postimg.cc/dkl6kb7kn/DSC09275.jpg) (http://postimg.cc/image/dkl6kb7kn/)

(http://s31.postimg.cc/t8mdr3n6f/DSC09277.jpg) (http://postimg.cc/image/t8mdr3n6f/)

(http://s31.postimg.cc/9yfd7o17b/DSC09289.jpg) (http://postimg.cc/image/9yfd7o17b/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: skhan on April 24, 2016, 12:01:24 AM
Thanks Jeff,
i'll check tomorrow and see if i can see them
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangokothiyan on April 24, 2016, 12:01:55 AM

I have had the same problem on all my mango trees except Venus. I think it is not diseased; it is just the bugs taking a particular liking to the new growth. I used Sevin on one of the trees (Maha Chanok) just as the swollen buds were about to push out and that worked. The  new growth came out good and healthy looking.  I tip-pruned  most of the other trees and I am planning to use Sevin or Organocide just when the branches push new growth.

I think this is spider mite, but hoping the other forum members will chime in. I'm getting a bad infestation of the same thing on a couple of my mango trees.

My Keitt is flushing out and some of the new flushes are looking bad.
(https://farm2.staticflickr.com/1441/26568748206_bfc2021dd3_n.jpg) (https://flic.kr/p/GtMMcC) (https://farm2.staticflickr.com/1674/25989767974_56752a90cc_n.jpg) (https://flic.kr/p/FACmxQ)
I noticed when troubling the new leaves, a skinny brown beetle with a white spot came out. Around the size of an ant, but longer.

Here are some flushes on the same tree that are fine-ish:
(https://farm2.staticflickr.com/1473/26568746516_46676073cc_n.jpg) (https://flic.kr/p/GtMLGu) (https://farm2.staticflickr.com/1694/25989765324_d0b74daa89_n.jpg) (https://flic.kr/p/FACkL9)

Should i remove the diseased looking flushes?
What to should i do?
h again
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on April 24, 2016, 12:31:43 AM
I got some close-up shots of the little buggers. I watched with a magnifier, and they stick a needle like thing in the mouth area into the tender foliage and suck the sap. What the heck are they?

(http://s31.postimg.cc/fwmufp02f/DSC09291.jpg) (http://postimg.cc/image/fwmufp02f/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on April 24, 2016, 01:03:10 AM
OK. Sevin will work, but it will cause some collateral damage. Very toxic to the guys keeping your soil healthy -- earthworms and millipedes. I tried it once years ago and found piles of dead millipedes the next day. I might try a pyrethrin based product.

I have had the same problem on all my mango trees except Venus. I think it is not diseased; it is just the bugs taking a particular liking to the new growth. I used Sevin on one of the trees (Maha Chanok) just as the swollen buds were about to push out and that worked. The  new growth came out good and healthy looking.  I tip-pruned  most of the other trees and I am planning to use Sevin or Organocide just when the branches push new growth.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangokothiyan on April 24, 2016, 10:32:57 AM

Thanks for the information, Jeff. How about Safer insect  killing soap? It is organic. I think spraying the tree just when the new growth is about to push out is key. I have seen new growth completely die because of the bugs. They do not seem to be interested in anything other than really tender foliage.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on April 24, 2016, 10:46:01 AM
Never tried it. Oils here tend to burn. Yah, the trick is finding something that won't burn tender foliage. I wish someone could identify this pest so that we could figure out a good control measure.


Thanks for the information, Jeff. How about Safer insect  killing soap? It is organic. I think spraying the tree just when the new growth is about to push out is key. I have seen new growth completely die because of the bugs. They do not seem to be interested in anything other than really tender foliage.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on April 24, 2016, 12:01:27 PM
Safer soap is about useless.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: TnTrobbie on April 24, 2016, 06:19:34 PM
 - - -  -
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on April 25, 2016, 08:03:47 PM
So, one person believes that the insect damaging the mango leaves is a mirid. I'm starting to wonder if we had an outbreak of avocado mirids which caused both the swiss cheese avocado leaves (and low fruit set) and the ratty looking new mango growth.

Fortunately, the mango damage is mostly cosmetic at this point, because I'll be pruning all of the affected trees back this summer. So, rather than hit it with insecticide, I'm just going to pick off new shoots and prune out the affected foliage. I think the mirid population will dwindle once the hell heat of south florida summer kicks in.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on April 25, 2016, 11:13:37 PM
So, one person believes that the insect damaging the mango leaves is a mirid. I'm starting to wonder if we had an outbreak of avocado mirids which caused both the swiss cheese avocado leaves (and low fruit set) and the ratty looking new mango growth.

Fortunately, the mango damage is mostly cosmetic at this point, because I'll be pruning all of the affected trees back this summer. So, rather than hit it with insecticide, I'm just going to pick off new shoots and prune out the affected foliage. I think the mirid population will dwindle once the hell heat of south florida summer kicks in.

I noticed the two insects in your picture look like different bugs based on their anatomy although it could be angle and clarity.

Have you been able to find any pictures to id the mirid if thsts w h at it is?  Have you had any unusual fruit drop on m a ng and/or avocado?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on April 25, 2016, 11:51:45 PM
I found some pictures that look very similar to the bugs. But, I haven't had much luck finding info on them in the context of mango. Dr Crane was the one who thought it could be a mirid, but he wasn't sure. I"m still waiting to hear back from a couple of other people.

So, one person believes that the insect damaging the mango leaves is a mirid. I'm starting to wonder if we had an outbreak of avocado mirids which caused both the swiss cheese avocado leaves (and low fruit set) and the ratty looking new mango growth.

Fortunately, the mango damage is mostly cosmetic at this point, because I'll be pruning all of the affected trees back this summer. So, rather than hit it with insecticide, I'm just going to pick off new shoots and prune out the affected foliage. I think the mirid population will dwindle once the hell heat of south florida summer kicks in.

I noticed the two insects in your picture look like different bugs based on their anatomy although it could be angle and clarity.

Have you been able to find any pictures to id the mirid if thsts w h at it is?  Have you had any unusual fruit drop on m a ng and/or avocado?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: skhan on April 26, 2016, 08:47:20 AM
I took a look at the new flushes and i didn't see and bugs around.
I removed it and spot sprayed sevin near the terminals, hopefully the next flush is better.
Seem like with this Keitt ever other flush is messed up.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fisherking73 on April 27, 2016, 05:21:56 PM
So what effect will running sprinklers have on mango production? I am trying to control the amount of water they get as to not to over water when fruiting. The grass has taken a hit the last 2 years, and pretty much scorched earth with beautiful mango trees LOL  Will using sprinkler system to irrigate grass 2-3 time a week screw up anything related to the mangoes?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on April 27, 2016, 05:56:50 PM
Watering 15 - 20 minutes per zone twice a week is fine and actually helps avoid splitting in the event of sudden rainfall during drought season. Just keep the water from hitting leaves / fruits. And be sure to adjust your watering to the weather. For example, you can almost cut out watering altogether during our "winter."

So what effect will running sprinklers have on mango production? I am trying to control the amount of water they get as to not to over water when fruiting. The grass has taken a hit the last 2 years, and pretty much scorched earth with beautiful mango trees LOL  Will using sprinkler system to irrigate grass 2-3 time a week screw up anything related to the mangoes?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: skhan on May 18, 2016, 11:59:52 AM
Here some pics of my fathers VP tree. Planted from a 3 gallon around 4-5 years ago.
Don't know whats going on with it looks to be deficient in a few things. I think he might of spray some potassium on it a few months to a year ago.

(https://farm8.staticflickr.com/7288/27012715301_745405aa25_n.jpg) (https://flic.kr/p/Ha2e9H)

(https://farm8.staticflickr.com/7233/26477331003_560c1ae513_n.jpg) (https://flic.kr/p/GkHf3X)

(https://farm8.staticflickr.com/7135/27012713851_eb694b5f0a_n.jpg) (https://flic.kr/p/Ha2dHH)

Any ideas??
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: skhan on May 23, 2016, 11:02:03 PM
Bump,
It seems like a nutrient problem to m untrained eyes
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 29, 2016, 11:13:44 AM
Powdery Mildew.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: darkcoolboo on June 27, 2016, 03:48:05 PM
Here's a link from over at the phoenix fruit forum. The owner said that after the winter, the entire tree defoliated, but it wasn't because of the frost. The leaves turned dried green instead of the dried brown leaves characteristic of frost damage. The plant usually restarts from the base of the tree, which is the rootstock. I've also seen it happen before, so what do you think is the problem.


What's wrong with my mango tree ? - http://phoenixtropicals.com/phpbb/viewtopic.php?t=667 (http://phoenixtropicals.com/phpbb/viewtopic.php?t=667)


(https://s31.postimg.cc/uje8fh76j/13_16.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 27, 2016, 10:24:07 PM
Dried green?  As in rapid dehydration in the shade?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: knlim000 on July 12, 2016, 12:12:52 AM
My tree is show sign of the sap oozing out thru the trunk too and it's showing a bit of black color.  I am trying tea leaf oil on it to see if it will kill fungus that form the black color. Anyone try tea leaf oil before? I had a soar on my lip and it was getting bigger too, I applied tea leaf oil to it and it started to heal. I was thinking it might do the same for the tree trunk.

Sorry for the lack of pictures. Here's two of my trees showing a little bit of sap oozing out of the main trunk. This started in the middle of summer. The trees are growing fine. Flushing new leaves right now too.

(http://i.imgur.com/gk9imV2.jpg)

(http://i.imgur.com/QneYeJA.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 12, 2016, 08:28:00 AM
We've dealt with this earlier in this thread.

Alternate sprays on whole tree about every two weeks with a phosphite product spray, and a couple weeks later with a copper product spray, until there are no more new indications of continuing problem.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: knlim000 on July 12, 2016, 05:37:17 PM
My question is has anyone tried it with tea tree oil on the open wound  which is oozing out saps and will most likely be susceptible to fungus and later cause trunk disease like canker : https://www.flickr.com/photos/scotnelson/9603887230/in/album-72157632297340636/ (https://www.flickr.com/photos/scotnelson/9603887230/in/album-72157632297340636/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DurianLover on September 26, 2016, 05:17:51 PM
Can anyone name this disease and prescribed cure for it? Branches have have spots with symptoms like snake shedding skin. It does seems to effect growth of the trees or vigor.

(http://i65.tinypic.com/kbotfn.jpg)

(http://i66.tinypic.com/34shvf4.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 26, 2016, 09:41:44 PM
I have never seen that.   I hope it isn't in the USA!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DurianLover on September 26, 2016, 11:19:00 PM
I have never seen that.   I hope it isn't in the USA!

No, it's not in USA! I made a typo, should have said "does not seem to effect growth of the trees or vigor".  I've seen mature trees with this issue in vicinity, they all seem to be growing and producing fine. Placing all of my mango trees under perpetual quarantine than.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: skhan on December 06, 2016, 08:57:35 AM
My Glenn is dropping a few leaves and is looking a bit sick.
The upper part of the tree is (not in photo) is full and looks healthy
(https://c6.staticflickr.com/6/5476/30651742733_6a480e351e_n.jpg) (https://flic.kr/p/NGAcdZ)
(It looks a bit scraggly because i hollowed out the interior for better air flow this year)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 06, 2016, 09:34:45 AM
Drought response and/or nitrogen deficiency.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: skhan on December 06, 2016, 09:48:35 AM
Drought response and/or nitrogen deficiency.
Thanks Har.
If i water it and/or apply nitrogen now would that throw off any reproductive flushes?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on December 06, 2016, 10:47:49 AM
Drought response and/or nitrogen deficiency.
Thanks Har.
If i water it and/or apply nitrogen now would that throw off any reproductive flushes?

You can give it some water now but if its mature enough and you want it to fruit, hold off on any nitrogen till after fruit harvest.  If it is extremely deficient of nitrogen, give fertilizer and sacrifice this season's fruit.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: skhan on December 06, 2016, 10:49:48 AM
Awesome thanks
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on December 06, 2016, 11:16:42 AM
I water my trees (mangoes included) twice a week this time of the year. They appreciate consistent access to water. I just finished building out a sprinkler system for the neighboring lot :-).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: ibliz on December 07, 2016, 01:52:31 AM
That's caused by the larva of Mango Stem Miner (Spulerina isonoma), which is a moth.
It's a rare and minor pest. I have seen them a few times. A regular spray against the other major pests (flies, borers etc) should also control it.



Can anyone name this disease and prescribed cure for it? Branches have have spots with symptoms like snake shedding skin. It does seems to effect growth of the trees or vigor.

(http://i65.tinypic.com/kbotfn.jpg)

(http://i66.tinypic.com/34shvf4.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 07, 2016, 09:20:09 AM
Thank you for the identification of mango stem miner.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitFreak on January 03, 2017, 11:58:24 PM
What is this doo doo on my Pickering?

(https://s29.postimg.cc/ebdmakyz7/image.jpg) (https://postimg.cc/image/ebdmakyz7/)

(https://s29.postimg.cc/42l54raxf/image.jpg) (https://postimg.cc/image/42l54raxf/)

(https://s29.postimg.cc/bxvojkkk3/image.jpg) (https://postimg.cc/image/bxvojkkk3/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 04, 2017, 06:42:56 AM
Looks like a red algae. 

You could probably clean most of it off with a 3/4-inch garden hose and water pistol;  then, after it dries, spray with copper.   

Other things that might work would be horticultural spray oil, or Organocide 3-in-1, followed by Biowash Plant Care sprayed with good pressure.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitFreak on January 04, 2017, 02:35:02 PM
Looks like a red algae. 

You could probably clean most of it off with a 3/4-inch garden hose and water pistol;  then, after it dries, spray with copper.   

Other things that might work would be horticultural spray oil, or Organocide 3-in-1, followed by Biowash Plant Care sprayed with good pressure.

Thanks Har.  I will be setting up a call with you in the near future.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on February 05, 2017, 06:38:22 PM
I have a Julie seedling experiment (growing it from seed to see what it produces), and the leaves look like it's affected by Anthracnose.  Could someone confirm and let me know the safest way to treat it?
(https://s30.postimg.cc/ylaxw1eul/20170205_175720.jpg) (https://postimg.cc/image/ylaxw1eul/)

(https://s30.postimg.cc/kg54u85t9/20170205_175711.jpg) (https://postimg.cc/image/kg54u85t9/)

(https://s30.postimg.cc/g8aclh4dp/20170205_175701.jpg) (https://postimg.cc/image/g8aclh4dp/)

(https://s30.postimg.cc/o2ay6vc6l/20170205_175653.jpg) (https://postimg.cc/image/o2ay6vc6l/)

(https://s30.postimg.cc/bc6pts48d/20170205_175644.jpg) (https://postimg.cc/image/bc6pts48d/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 06, 2017, 12:03:31 AM
Pictures a little too blurred when magnified....

On-line, look up "Thrips on mangos", look at the pictures, and then look at your mango's leaves with magnification, such as 8X, or a little higher.

Do they match?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on February 12, 2017, 04:51:43 PM
You're right.  I see little bugs on there, but I"m not sure they're thrips.  They have a red stripe across their back and there's also black bugs crawling around too.  They're on all the leaves.

(https://s9.postimg.cc/5tuycg9bf/20170212_161738.jpg) (https://postimg.cc/image/5tuycg9bf/)

(https://s22.postimg.cc/it52rlan1/20170212_161925.jpg) (https://postimg.cc/image/it52rlan1/)

(https://s13.postimg.cc/3sxm6jk0z/20170212_162007.jpg) (https://postimg.cc/image/3sxm6jk0z/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on February 12, 2017, 05:02:18 PM
Adding more pics of the bugs.  I think they are red banded thrips:


(https://s2.postimg.cc/n9p9700ad/20170212_165449.jpg) (https://postimg.cc/image/n9p9700ad/)

(https://s2.postimg.cc/o0hzcs2np/20170212_165447.jpg) (https://postimg.cc/image/o0hzcs2np/)

(https://s2.postimg.cc/r8mgptoxh/20170212_165444.jpg) (https://postimg.cc/image/r8mgptoxh/)

(https://s2.postimg.cc/6d06eksqd/20170212_165441.jpg) (https://postimg.cc/image/6d06eksqd/)

(https://s2.postimg.cc/gbpqesrjp/20170212_165439.jpg) (https://postimg.cc/image/gbpqesrjp/)

(https://s2.postimg.cc/7uq83vmut/20170212_165437.jpg) (https://postimg.cc/image/7uq83vmut/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 12, 2017, 09:00:31 PM
Red-banded Thrips nymphs, and dark adults.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on February 13, 2017, 12:48:32 PM
What's the best way to treat it?  Should I remove the worst leaves, and spray the rest with a Spinosad product like this -> http://www.bonide.com/products/garden-naturals/view/252/captain-jacks-deadbug-brew-conc (http://www.bonide.com/products/garden-naturals/view/252/captain-jacks-deadbug-brew-conc)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropheus76 on February 13, 2017, 09:00:16 PM
Wow did we need a colder winter. Finding those flipping grey and orange striped weevils on other trees now besides my mangos. I found them chewing on an all spice tree. Threw a handful in the canal, fish love them. Guess Ill have to hit those trees with a root drench too. Oddly enough they ignored my graham and pickering which are blooming and have fruit and are in the middle between the infested trees.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on February 13, 2017, 09:37:15 PM
They are definitely a nuisance. They tend to prefer certain cultivars over others -- not just with mangoes. I'm not sure what makes them decide one cultivar is tastier than the other.

Wow did we need a colder winter. Finding those flipping grey and orange striped weevils on other trees now besides my mangos. I found them chewing on an all spice tree. Threw a handful in the canal, fish love them. Guess Ill have to hit those trees with a root drench too. Oddly enough they ignored my graham and pickering which are blooming and have fruit and are in the middle between the infested trees.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 15, 2017, 08:29:05 PM
Grub Go (or Grub Gone ?) might help against the Sri Lanka Weevil--- I haven't tried it, because I don't have a problem.  It is live spores, labeled for about a dozen species of weevils, and about a dozen other non-weevil beetles, but doesn't mention Sri Lanka Weevil.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: ibliz on February 18, 2017, 08:30:57 PM
Aside from thrips, I see some red scales. It's either Aonidiella aurantii or Aonidiella orientalis.
I might be mistaken though, because I have never seen one this small.
Do you have any citrus plant close by ?



(https://s9.postimg.cc/7morr0jjv/Screen_Shot_2017_02_19_at_8_39_55_AM.png) (https://postimg.cc/image/7morr0jjv/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on February 24, 2017, 10:11:06 PM
Aside from thrips, I see some red scales. It's either Aonidiella aurantii or Aonidiella orientalis.
I might be mistaken though, because I have never seen one this small.
Do you have any citrus plant close by ?



(https://s9.postimg.cc/7morr0jjv/Screen_Shot_2017_02_19_at_8_39_55_AM.png) (https://postimg.cc/image/7morr0jjv/)

Thank you for looking.  No citrus nearby, but there are a few Poinsettas close by.  I still haven't treated the plant.  What should I do?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 24, 2017, 10:31:09 PM
In slow-drying weather conditions, spray with horticultural oil, or neem oil, or Organocide 3-in-1....
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on February 25, 2017, 10:07:38 AM
In slow-drying weather conditions, spray with horticultural oil, or neem oil, or Organocide 3-in-1....

Ok I'll try that ASAP and try to have it under control before summer weather starts in South Florida where it's raining almost daily.

EDIT:  Went out to Home Depot today, bought some Neem Oil, and have sprayed it all over the leaves.  Hopefully it doesn't rain tonight..there's threatening grey skies right now..  ::)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DocFruitFly on March 01, 2017, 01:11:52 PM
Those aren't eggs in the original post, they're puparia cases of braconid wasps. Originally, they were probably on a caterpillar that has since decomposed.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitFreak on March 29, 2017, 08:59:40 PM
Drought response and/or nitrogen deficiency.


(https://s17.postimg.cc/pq3t156dn/IMG_2582.jpg) (https://postimg.cc/image/pq3t156dn/)

(https://s17.postimg.cc/3s7c7crd7/IMG_2583.jpg) (https://postimg.cc/image/3s7c7crd7/)

(https://s17.postimg.cc/nbbxgpq4r/IMG_2584.jpg) (https://postimg.cc/image/nbbxgpq4r/)

(https://s17.postimg.cc/axz39t0gb/IMG_2586.jpg) (https://postimg.cc/image/axz39t0gb/)

(https://s17.postimg.cc/v6mgvizrf/IMG_2589.jpg) (https://postimg.cc/image/v6mgvizrf/)

Is this probably a drought response or could this happen from something else?  Steady decline for this Angie in one wk.  has been on same irrigation as other trees which seem fine (maybe more is needed).  I turned the 20minute watering every other day to every day  All have been fed adequate amounts of fert...?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 01, 2017, 12:43:08 PM
The leaf damage looks like mite or thrips damage in cold weather, but the sick branches dying back looks to be some vascular infection of bacteria or fungus.  Put some still-alive branch and leaves into a paper bag, not plastic, and mail to TREC.  Tropical Research and Education Center near Homestead, Florida.

Meanwhile apply some Alliette or Flanker,  or some phosphite product (such as Elemax Foliar Phosphite, or Organocide Plant Doctor.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitFreak on April 02, 2017, 08:36:32 AM
The leaf damage looks like mite o thrips damage in cold weather, but the sick branches dying back looks to be some vascular infection of bacteria or fungus.  Put some still-alive brach and leaves into a paper bag, not plastic, and mail to TREC.  Tropical Research and Education Center near Homestead, Florida.

Meanwhile apply some Alliette or Flanker,  or some phosphite product (such as Elemax Foliar Phosphite, or Organocide Plant Doctor.

Thanks Har.  That's a good idea to submit a sample. So strange for such a quick decline.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: simon_grow on April 02, 2017, 05:09:16 PM
Har or anyone else that may know, will baking soda and water work to prevent Powdery Mildew on Mango Inflorescence? I use baking soda and water on my wheatgrass and it completely eliminated the fungus or mold I used to get. I've seen several mentions about using baking soda to prevent Powdery mildew on vegetable crops.

Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: wslau on April 02, 2017, 06:17:51 PM
Simon,
Baking soda can be used against mango powdery mildew.
Was surprised to read that it could be illegal to use though.
https://www.ctahr.hawaii.edu/oc/freepubs/pdf/PD-46.pdf (https://www.ctahr.hawaii.edu/oc/freepubs/pdf/PD-46.pdf)

I've read that mixes contain baking soda, vegetable oil, and dish soap.
The other ingredients are for emulsification and adherence properties.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: simon_grow on April 02, 2017, 06:48:11 PM
Thanks for the article Warren! I can't believe they can't use it in some places because basking soda is not labeled as a fungicide! I've had amazing results with it, on wheatgrass. Time to spray my Lemon Zest trees for about 15 cents a gallon.

Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 02, 2017, 09:25:51 PM
State universities receive a lot of money from product developers to run evaluative experiments.  These sponsors take a dim view of cheap competition for the products that have been developed at great cost and under the heavy burden of bureaucratic regulations and legal hoops to jump through.  So university administrations tend to forbid university employees from favorably mentioning old-time techniques, or home remedies, or un-patentable natural substances.  These employees then tend to believe that their employers' policies are interpretations of the law, and go on willy-nilly telling the public that all that stuff is illegal, though they would be hard-put to find it spelled out in actual law.  When the public believes it and complies, this totalitarian rubbish will later get codified as "industry standards / best management practices"--- regulatory creap having again occurred.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hcbeck2689 on April 03, 2017, 12:40:00 PM
 I need some help identifying my mango trees problem and how to deal with it.  I recently  bare rooted and repotted it,  and it has had a hard time recovering. The tips of the branches started to turn rotten so I cut them off.  But every time I cut  a little bit more,  it would just go black again.  Is there some product that I can get locally and a small amount?
 I do not know how to post pictures. I have some I took though
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on April 03, 2017, 07:41:22 PM
I need some help identifying my mango trees problem and how to deal with it.  I recently  bare rooted and repotted it,  and it has had a hard time recovering. The tips of the branches started to turn rotten so I cut them off.  But every time I cut  a little bit more,  it would just go black again.  Is there some product that I can get locally and a small amount?
 I do not know how to post pictures. I have some I took though

Why on earth did you bare root it?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hcbeck2689 on April 04, 2017, 04:35:41 PM
I need some help identifying my mango trees problem and how to deal with it.  I recently  bare rooted and repotted it,  and it has had a hard time recovering. The tips of the branches started to turn rotten so I cut them off.  But every time I cut  a little bit more,  it would just go black again.  Is there some product that I can get locally and a small amount?
 I do not know how to post pictures. I have some I took though

Why on earth did you bare root it?
Because the soil it was in sucked and I wanted to switch to gritty mix. Why? Because these trees will be in containers for decades.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on April 04, 2017, 08:08:15 PM
I need some help identifying my mango trees problem and how to deal with it.  I recently  bare rooted and repotted it,  and it has had a hard time recovering. The tips of the branches started to turn rotten so I cut them off.  But every time I cut  a little bit more,  it would just go black again.  Is there some product that I can get locally and a small amount?
 I do not know how to post pictures. I have some I took though

Why on earth did you bare root it?
Because the soil it was in sucked and I wanted to switch to gritty mix. Why? Because these trees will be in containers for decades.

You say the soil "sucked" yet you put it into a useless mix.  Your problem is probably a combination of bare rooting and using gritty crap. I mean gritty mix...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hcbeck2689 on April 04, 2017, 11:14:16 PM
I need some help identifying my mango trees problem and how to deal with it.  I recently  bare rooted and repotted it,  and it has had a hard time recovering. The tips of the branches started to turn rotten so I cut them off.  But every time I cut  a little bit more,  it would just go black again.  Is there some product that I can get locally and a small amount?
 I do not know how to post pictures. I have some I took though


Why on earth did you bare root it?
Because the soil it was in sucked and I wanted to switch to gritty mix. Why? Because these trees will be in containers for decades.

You say the soil "sucked" yet you put it into a useless mix.  Your problem is probably a combination of bare rooting and using gritty crap. I mean gritty mix...
Your comment doesn't help me in any way and I was hesitant to even mention the gritty mix bc I didn't want to catch crap. It's disappointing that such a large contributor to the forum  would respond like this in a degrading manner.
I bare rooted three trees and the other two are doing fine. Reguardless, I know that it was the bare rooting that hurt it. I am asking for help dealing with the black rot, not my preference of soil.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitFreak on April 05, 2017, 09:29:06 AM
I need some help identifying my mango trees problem and how to deal with it.  I recently  bare rooted and repotted it,  and it has had a hard time recovering. The tips of the branches started to turn rotten so I cut them off.  But every time I cut  a little bit more,  it would just go black again.  Is there some product that I can get locally and a small amount?
 I do not know how to post pictures. I have some I took though

Why on earth did you bare root it?
Because the soil it was in sucked and I wanted to switch to gritty mix. Why? Because these trees will be in containers for decades.

You say the soil "sucked" yet you put it into a useless mix.  Your problem is probably a combination of bare rooting and using gritty crap. I mean gritty mix...
Your comment doesn't help me in any way and I was hesitant to even mention the gritty mix bc I didn't want to catch crap. It's disappointing that such a large contributor to the forum  would respond like this in a degrading manner.
I bare rooted three trees and the other two are doing fine. Reguardless, I know that it was the bare rooting that hurt it. I am asking for help dealing with the black rot, not my preference of soil.

Try putting it into a light well draining mix of soil and let the roots and tree recover for awhile if not too late.  I contemplated gritty mix at one time but scrapped the idea as it seems labor intensive, costly, no advantage over pre-made mixes (fafard, foxfarm, promix, any local horti-mix), and of course how much it weighs.  If the tree in question is relatively young I'd do as I mentioned above and start with another 3gal.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jontte on April 05, 2017, 02:35:58 PM
Hi folks!

I have a soon-to-be one year old mango in largish pot. Soil type is loose, gritty mix like with more organic matter.
Drains well but holds on moisture so it needs watering about once a week.

I live in Finland, so it is a indoor plant, and as a light source I have two 100w CFLs. Kelvin rate 6500.
It shares the light setup with other various tropicals, which are doing just great.

The relative moisture in the air is pretty or too low. It sticks around 50% at winters and raises to around 70% in the summer.
Although I mist my plants 2-4 times a day.

I fertlize it with a fertilizer with NPK 13-7-20(I have no idea if this is a good ratio for mangoes..). Contains macros.
I did add some iron sulphate last month and couple of weeks ago I watered it with Epsom salt(magnesium sulphate).
As a source of calsium it gets powdered eggshells now and then.


The mango pushes out new growth at nice speed, BUT, the new growth seems to have some kind of disease or something.
The new leaves looks a bit pale, some minor black spots here and there, and the underside of new leaves are oozing out some sort of sticky syrupy-like texture. I guess the black spots are a fungy which lives on the "syrup".
The suryp tastes kind of bitter-sweet(yes, I have done a couple of taste-tests..).
Theres no pests to be found, Ive checked the whole plant with a loop a couple of times. No nothing.

Have you guys some idea about what it might be? Too much/too little water, bad fertilizer, something else?


Thank you in beforehand!

Cheers from Finland, where spring starts to kick in! :)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: shinzo on April 06, 2017, 02:31:46 AM
Hi guys, i have too seedlings (polyembrionic) which were grown indoors and in front of a large glass window since last september, at the end of the winter i noticed the discoloration of some leaves (of both seedlings, is it due to temperature variation? low humidity or lack of watering (i water once a week)? or is it a fungal disease?

Seedling 1 (i'm planning to plant it in the ground next week if it is not a fungal disease)

(https://s7.postimg.cc/45ojn3r6j/DSC_2717.jpg)

Seedling 2 (at the right side of the picture)

(https://s10.postimg.cc/dyy2sxxd5/DSC_2718.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Domnik on April 06, 2017, 05:17:23 AM

The new leaves looks a bit pale, some minor black spots here and there, and the underside of new leaves are oozing out some sort of sticky syrupy-like texture. I guess the black spots are a fungy which lives on the "syrup".
The suryp tastes kind of bitter-sweet(yes, I have done a couple of taste-tests..).
Theres no pests to be found, Ive checked the whole plant with a loop a couple of times. No nothing.

Have you guys some idea about what it might be? Too much/too little water, bad fertilizer, something else?


Hi Jontte. It is probably because scale insects (diaspididae). At the beginning - it is quite difficult to see them when they are young and not a professional gardener, but when you hit it several times in the future you will recognize without a problem. You have to know that scale insects (+ aphids and spider mites - Tetranychidae) love mangoes. Scale insects can move from other plants in your home, aphids and spider mites usually get trough by open window  or from other plants.

Diaspididae (if you git them) are hard to remove. Their secretion is called fall. It is sticky and sweet. Basidiomycota family mushroom develop on it - then its change color to black.
I suggest to take the magnifying glass and carefully check the mango. It might help. Good luck.

shinzo, i think you have not perfect soil in your pot. It should be more aerated soil (with the addition of vermiculite or other mineral). It seems to me that you water the plant too often. The ground should dry at the top before you watering land again. When soil little dry at the top - then the roots get some air. At the moment the roots of your plant are largely rotting.
Regards. Dominik
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 06, 2017, 09:30:14 AM
Shinzo, It looks like excessive soil-mineral-salts burn, and I see mineral accumulation on the pot, both on top at the edge of the soil, and at the bottom, outside.

Take it where you can hold up the pot and run several gallons of water through it, to flush out salts.  Then momentarily remove it from the pot (but don't bare root it), and add some fresh soil at the bottom of the pot, and then place the plant and root ball back in the pot, with a little fresh soil also around the edges. Don't bury the root-crown.
The pot should be almost full of soil, with about 1 centimeter plastic lip of container above soil to hold water from running over.

Don't use manure or compost, and don't use any fertilizer with more than 8% Nitrogen.  Also don't use fertilizer with Muriate of Potash (Potassium Chloride).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 06, 2017, 09:48:52 AM
Jontte,

1) The baby scales are transparent little circles, like cellophane, closely pressed to the bottom of the leaf, the leaf which is above the leaf that is covered with shiny honeydew or blackened on the upper surface.  Your magnifier should be 8X or 10X, and you need strong light at a side-ways angle, to see the scale nymphs.

2)  13% Nitrogen is excessive.  8% or less is preferable.

3) There could have been a thrips infestation on the new growth, which would leave oozy scraping damage on the underside of a leaf.  If you washed the leaves, the thrips and their empty exoskeletons could be all gone away to the ground.

4)Deficiency of Copper can cause resinous oozing, not honeydew.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: shinzo on April 06, 2017, 10:08:00 AM
Thanks Domnik and Har, Very useful information. Can i plant it directly in its final spot in the ground (after hardening it during a week or so) ?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 06, 2017, 12:32:00 PM
Yes.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jontte on April 06, 2017, 01:43:15 PM
Jontte,

1) The baby scales are transparent little circles, like cellophane, closely pressed to the bottom of the leaf, the leaf which is above the leaf that is covered with shiny honeydew or blackened on the upper surface.  Your magnifier should be 8X or 10X, and you need strong light at a side-ways angle, to see the scale nymphs.

2)  13% Nitrogen is excessive.  8% or less is preferable.

3) There could have been a thrips infestation on the new growth, which would leave oozy scraping damage on the underside of a leaf.  If you washed the leaves, the thrips and their empty exoskeletons could be all gone away to the ground.

4)Deficiency of Copper can cause resinous oozing, not honeydew.

My loop is 30X, so I guess I would have seen some pests if there is any..
I dont know if it is honeydew, but it is sticky. It might be the copper deficiency but we'll see. It's right now pushing new growth, and so far it seems to be healthy growth. Luckily.

What are the symptoms for calcium deficiency?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 06, 2017, 02:21:42 PM
Calcium deficiency is often not obvious--- lack of vigor, lack of robustness, lack of health, lack of resistance to weather or fungi--- can contribute, along with other deficiencies, to branch dieback, tip dieback.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: shinzo on April 07, 2017, 04:43:41 AM
Shinzo, It looks like excessive soil-mineral-salts burn, and I see mineral accumulation on the pot, both on top at the edge of the soil, and at the bottom, outside.

Take it where you can hold up the pot and run several gallons of water through it, to flush out salts.  Then momentarily remove it from the pot (but don't bare root it), and add some fresh soil at the bottom of the pot, and then place the plant and root ball back in the pot, with a little fresh soil also around the edges. Don't bury the root-crown.
The pot should be almost full of soil, with about 1 centimeter plastic lip of container above soil to hold water from running over.

Don't use manure or compost, and don't use any fertilizer with more than 8% Nitrogen.  Also don't use fertilizer with Muriate of Potash (Potassium Chloride).

Just to update you guys with the situation. I flushed the pots today, and i noticed what seems like gnats larvae floating when i flushed it. They may have been causing some damage to the roots which may also be another contributor to the situation. I hope planting them outdoors will fix this larvae issue.
Can i do the same flushing thing with 15 inches tall soursop seedlings potted in the same potting soil (they lost their leaves and are now pushing new leaves)? they show the same accumulation of salts and minerals in the edges of the pots.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: shinzo on April 07, 2017, 05:56:51 AM

Shinzo, It looks like excessive soil-mineral-salts burn, and I see mineral accumulation on the pot, both on top at the edge of the soil, and at the bottom, outside.

Take it where you can hold up the pot and run several gallons of water through it, to flush out salts.  Then momentarily remove it from the pot (but don't bare root it), and add some fresh soil at the bottom of the pot, and then place the plant and root ball back in the pot, with a little fresh soil also around the edges. Don't bury the root-crown.
The pot should be almost full of soil, with about 1 centimeter plastic lip of container above soil to hold water from running over.

Don't use manure or compost, and don't use any fertilizer with more than 8% Nitrogen.  Also don't use fertilizer with Muriate of Potash (Potassium Chloride).

Just to update you guys with the situation. I flushed the pots today, and i noticed what seems like gnats larvae floating when i flushed it. They may have been causing some damage to the roots which may also be another contributor to the situation. I hope planting them outdoors will fix this larvae issue (i'm going to use some diy methods like vineagar traps and potatoes traps also) .
Can i do the same flushing thing with 15 inches tall soursop seedlings potted in the same potting soil (they lost their leaves and are now pushing new leaves)? they show the same accumulation of salts and minerals in the edges of the pots.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Domnik on April 07, 2017, 11:34:38 AM
Probably you have some Sciaridae (Sciara militaris) in pot. This insects feed on the rotting residues of seed. Just take the dead seed from the pot. It should solve the problem. After some time the remaining pests will disappear (lack of food).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gozp on April 12, 2017, 04:30:04 AM
I pugged my lemon zest 2 weeks ago..then i painted the pruning sealer to.the pugged site..

I am quite concerned that the top-side trunk is turning black.

Is that normal? If not, what should i do to save the tree?



(https://s17.postimg.cc/l1e7imxzf/20170411_134339.jpg) (https://postimg.cc/image/l1e7imxzf/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: shinzo on April 12, 2017, 06:58:38 AM
I pugged my lemon zest 2 weeks ago..then i painted the pruning sealer to.the pugged site..

I am quite concerned that the top-side trunk is turning black.

Is that normal? If not, what should i do to save the tree?



(https://s17.postimg.cc/l1e7imxzf/20170411_134339.jpg) (https://postimg.cc/image/l1e7imxzf/)
The common advice about pugging is not to seal the wound in order to not trap fungal diseases in the cut. Now after this was done, may be pug it some more inches down (and not seal it this time) in order to take off the ill part if you still have enough space above the graft? but i am not an expert, you should wait for more experienced members to give their advice.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Viking Guy on April 12, 2017, 10:34:00 AM
I pugged my lemon zest 2 weeks ago..then i painted the pruning sealer to.the pugged site..

I am quite concerned that the top-side trunk is turning black.

Is that normal? If not, what should i do to save the tree?



(https://s17.postimg.cc/l1e7imxzf/20170411_134339.jpg) (https://postimg.cc/image/l1e7imxzf/)

Looks to me like it is spreading.

I will pug it again above that next bud before it reaches that bud also.  You'll lose the heavy branch but possibly save the tree.  No need to seal the wound.

I recently had to pug a Coconut Cream (oh the horror), but it pulled through and I'm sure I can retrain vertical growth on it.

I was left with only about 5 inches of graft after I removed all of the disease, but saved it in the end.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: shinzo on April 12, 2017, 03:47:22 PM
Shinzo, It looks like excessive soil-mineral-salts burn, and I see mineral accumulation on the pot, both on top at the edge of the soil, and at the bottom, outside.

Take it where you can hold up the pot and run several gallons of water through it, to flush out salts.  Then momentarily remove it from the pot (but don't bare root it), and add some fresh soil at the bottom of the pot, and then place the plant and root ball back in the pot, with a little fresh soil also around the edges. Don't bury the root-crown.
The pot should be almost full of soil, with about 1 centimeter plastic lip of container above soil to hold water from running over.

Don't use manure or compost, and don't use any fertilizer with more than 8% Nitrogen.  Also don't use fertilizer with Muriate of Potash (Potassium Chloride).
I planted the two polyembryonic seedlings today after flushing them 3 or 4 days ago. here is the root system of one of them. Are they in good shape? I don't know how to recognize root rot or root circling. as i recall, the tap roots are woody and solid at the touch.
The white gravels were un the bottom of the pot for drainage.

(https://s18.postimg.cc/7gqx8gqm1/Racines.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on April 16, 2017, 02:19:43 PM
Two or three weeks ago my two mango trees, a Cogshall and a Pickering, both put forth a growth flush.  But on both trees the new growth has all turned black and shriveled.  Never had this before.  I'm guessing fungal issue?
(https://s7.postimg.cc/jnfv0dgc7/20170416_075532.jpg) (https://postimg.cc/image/jnfv0dgc7/)


(https://s21.postimg.cc/wqbfw6ern/20170416_075512.jpg) (https://postimg.cc/image/wqbfw6ern/)

(https://s21.postimg.cc/mjpfg0adv/20170416_075544.jpg) (https://postimg.cc/image/mjpfg0adv/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on April 16, 2017, 02:24:04 PM
Fungal. We had rain right as new growth was emerging.

Two or three weeks ago my two mango trees, a Cogshall and a Pickering, both put forth a growth flush.  But on both trees the new growth has all turned black and shriveled.  Never had this before.  I'm guessing fungal issue?
(https://s7.postimg.cc/jnfv0dgc7/20170416_075532.jpg) (https://postimg.cc/image/jnfv0dgc7/)


(https://s21.postimg.cc/wqbfw6ern/20170416_075512.jpg) (https://postimg.cc/image/wqbfw6ern/)

(https://s21.postimg.cc/mjpfg0adv/20170416_075544.jpg) (https://postimg.cc/image/mjpfg0adv/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on April 16, 2017, 02:40:28 PM
Yeah, I figured as much.  Too late to treat, I suppose.  Just wait for the next growyh flush?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on April 16, 2017, 08:45:22 PM
Yep.

Yeah, I figured as much.  Too late to treat, I suppose.  Just wait for the next growyh flush?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: skhan on April 17, 2017, 09:13:07 AM
Two or three weeks ago my two mango trees, a Cogshall and a Pickering, both put forth a growth flush.  But on both trees the new growth has all turned black and shriveled.  Never had this before.  I'm guessing fungal issue?
(https://s7.postimg.cc/jnfv0dgc7/20170416_075532.jpg) (https://postimg.cc/image/jnfv0dgc7/)


(https://s21.postimg.cc/wqbfw6ern/20170416_075512.jpg) (https://postimg.cc/image/wqbfw6ern/)

(https://s21.postimg.cc/mjpfg0adv/20170416_075544.jpg) (https://postimg.cc/image/mjpfg0adv/)

Just spotted this on a few new flushes of my Coc/Cac tree
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on April 17, 2017, 12:19:22 PM
http://tropicalfruitforum.com/index.php?topic=1001.msg246084#msg246084 (http://tropicalfruitforum.com/index.php?topic=1001.msg246084#msg246084)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on April 17, 2017, 01:36:56 PM
You think it's those little leafhoppers again?

http://tropicalfruitforum.com/index.php?topic=1001.msg246084#msg246084 (http://tropicalfruitforum.com/index.php?topic=1001.msg246084#msg246084)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on April 17, 2017, 06:04:08 PM
Took a thorough look at both trees and didn't find any insects that might be the culprits.  I have to agree with Cookie Monster on this, at least for my trees:  new growth followed by some rains, resulting in a fungus. 
Should I let 'em be and let nature take over?  Or should I cut off the affected growth to help inspire new growth?  If so, where to make the cut?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gozp on April 17, 2017, 07:08:22 PM
Two or three weeks ago my two mango trees, a Cogshall and a Pickering, both put forth a growth flush.  But on both trees the new growth has all turned black and shriveled.  Never had this before.  I'm guessing fungal issue?
(https://s7.postimg.cc/jnfv0dgc7/20170416_075532.jpg) (https://postimg.cc/image/jnfv0dgc7/)


(https://s21.postimg.cc/wqbfw6ern/20170416_075512.jpg) (https://postimg.cc/image/wqbfw6ern/)

(https://s21.postimg.cc/mjpfg0adv/20170416_075544.jpg) (https://postimg.cc/image/mjpfg0adv/)

i had that on my coconut cream a year of growth like that...wasnt normal leaf growth..i decided to inspect the main branches...and i saw a darkish black...then i decided to pug it...i cut in halves the brances and of the main one it was infected with antrancnose
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on April 17, 2017, 07:17:34 PM
Check at night. I'm going to check tonight too.

Took a thorough look at both trees and didn't find any insects that might be the culprits.  I have to agree with Cookie Monster on this, at least for my trees:  new growth followed by some rains, resulting in a fungus. 
Should I let 'em be and let nature take over?  Or should I cut off the affected growth to help inspire new growth?  If so, where to make the cut?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gozp on April 17, 2017, 08:52:47 PM
Check at night. I'm going to check tonight too.

Took a thorough look at both trees and didn't find any insects that might be the culprits.  I have to agree with Cookie Monster on this, at least for my trees:  new growth followed by some rains, resulting in a fungus. 
Should I let 'em be and let nature take over?  Or should I cut off the affected growth to help inspire new growth?  If so, where to make the cut?


I even saw those small insects... prolly size of a human lice..... light grey color but not a leadhopper
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 17, 2017, 09:39:32 PM
Maybe Psilids?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on April 17, 2017, 10:44:52 PM
You think it's those little leafhoppers again?

http://tropicalfruitforum.com/index.php?topic=1001.msg246084#msg246084 (http://tropicalfruitforum.com/index.php?topic=1001.msg246084#msg246084)

Yes.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: knlim000 on April 17, 2017, 11:51:58 PM
has anyone tried grinding up redwood pines to use as pesticides?

I did any experiment yesterday by applying to my mango tree that has little white scales. I grind the pine needles in a blender and rub it onto the mango tree. So far, it's to early to know if it will come back.  Good thing about this is that it's natural as the redwood tree I have do not have any kind of insects on them at all. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gozp on April 18, 2017, 12:22:07 AM
has anyone tried grinding up redwood pines to use as pesticides?

I did any experiment yesterday by applying to my mango tree that has little white scales. I grind the pine needles in a blender and rub it onto the mango tree. So far, it's to early to know if it will come back.  Good thing about this is that it's natural as the redwood tree I have do not have any kind of insects on them at all.

Interesting. It may have an effect because of the smell that may repel pests (perhaps even squirrels)..

In fact, i use laurel leaves where cockroaches are.. They dont return as long as the laurel leaf still there..

There are many natural stuff in nature that can be used instead of buying the products...

Since this was broughten up, I will do an experiment to use carolina reaper peppers  on some of my trees are heavily infested (aphids, and etc)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: ChristineMessner on April 18, 2017, 03:27:49 AM
I'm not sure what type of eggs they are, but I would get a napkin and wipe them off.

maybe the ordinary eggs would do...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on May 02, 2017, 07:51:51 PM
I believe I may be overwatering my newly potted mango plants because I notice the tip of the leaves are brown.  I'm still learning the right amount of water they need, but I was watering every other day.  The issue is easily observed with my Pina Colada, and Honey Kiss, but I noticed it on my Fairchild and Maha Chanok too (Pickering seems to be fine though).  The 1st pic is the Pina Colada.  The following 2 pics are of the Honey Kiss with one of them showing the new growth with the brown tips.  Does it look like a case of too much love for the trees?

(https://s29.postimg.cc/mbpo3ympf/20170502_191703.jpg) (https://postimg.cc/image/mbpo3ympf/)

(https://s29.postimg.cc/pwq50xgmr/20170502_191606.jpg) (https://postimg.cc/image/pwq50xgmr/)

(https://s29.postimg.cc/3yto751mb/20170502_191544.jpg) (https://postimg.cc/image/3yto751mb/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 03, 2017, 09:34:25 AM
The second and third pictures remind me of "mouse ear" in Pecans, due to lack of Urease Enzyme to fully process urea--- un-utilized urea accumulates in the tips of the pecan leaves and kills the cells there.  Nickel is the central atom of urease, so when there is Nickel deficiency, urease can't be made.  Though Nickel has long been dreaded as a poisenous heavy metal contaminant, many plants actually need just a trace of it--- even less than is needed of Molybdenum.

I'm not aware of anyone's having studied Nickel in Mango trees, so I am speculating about relevancy here.

You can get some Nickel by applying Seaweed Extracts, or by using fertilizers containing Nickel "contaminant."  Find out which by visiting Washington State's specialized website for heavy metals in fertilizers.

Avoid using any fertilizer containing Urea.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on May 03, 2017, 08:00:09 PM
The second and third pictures remind me of "mouse ear" in Pecans, due to lack of Urease Enzyme to fully process urea--- un-utilized urea accumulates in the tips of the pecan leaves and kills the cells there.  Nickel is the central atom of urease, so when there is Nickel deficiency, urease can't be made.  Though Nickel has long been dreaded as a poisenous heavy metal contaminant, many plants actually need just a trace of it--- even less than is needed of Molybdenum.

I'm not aware of anyone's having studied Nickel in Mango trees, so I am speculating about relevancy here.

You can get some Nickel by applying Seaweed Extracts, or by using fertilizers containing Nickel "contaminant."  Find out which by visiting Washington State's specialized website for heavy metals in fertilizers.

Avoid using any fertilizer containing Urea.

I think you're spot on.  The majority of the medium in the pots is roughly 60% Fafard 3, 20% Premium Fafard Organic Compost, and 20% Fox Farm Happy Frog.  I did some additional research and the fertilizer in Fox Farm Happy Frog contains urea, so that's probably what's causing it.

To correct it, I bought https://drearth.com/products/liquid-fertilizers/100-natural-seaweed-extract/, that should work right?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: strkpr00 on May 07, 2017, 10:23:18 AM
I am loaded with this on just about all my mango trees, it seems to coincide with low fruit pruduction.
(https://s27.postimg.cc/agxo0alu7/20170503_190110.jpg) (https://postimg.cc/image/agxo0alu7/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: strkpr00 on May 07, 2017, 10:29:12 AM
I don't think its lac scale as it is not symmetrical.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: msk0072 on May 10, 2017, 08:33:56 AM
My V. Pride potted mango has bark problem Braun bark with small ctacks. I sprayed twice with Cooper Ox. Chloride.
It seems not to spead further. Any idea what is it? Fungal attack?

(https://s8.postimg.cc/h041wiv35/DSC01499.jpg) (https://postimg.cc/image/h041wiv35/)

(https://s10.postimg.cc/4j3n6gu91/DSC01501.jpg) (https://postimg.cc/image/4j3n6gu91/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 10, 2017, 02:00:27 PM
edited
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitFreak on May 10, 2017, 05:26:26 PM
STRKPR00, when one magnifies the picture, one can see four distinct lobes:  Lobate Lac Scale.

Hey Har.  Are you sure about this being lobate lac scale?  I have this on some of my trees and it looks more like an algae or fungus.  I definitely have comparison because the lobate lac seems to enjoy some of my carambola, miracle fruit, and nearby native cocoplums.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 10, 2017, 09:37:03 PM
I guess I was seeing what I wanted to see in the fuzzy image.   Yes it does look like algal or fungal growth, probably red algae.   Sprays with soap or oil or copper, not all at once. should eventually clear that up.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bigalxx15 on May 17, 2017, 11:18:32 AM
Can someone tell me what's going on with the leaves on my Fruit Punch mango tree. I have had it in 7 gallon nursery pot for over a year and I plan on stepping it up this weekend.
Some of the new growth looks fine then other leaves are curling and drying up. Out of the ten varieties of mangoes I have this is only happening to the FP mango tree.
Any advice would be greatly appreciated.

(https://s4.postimg.cc/igu85ra1l/IMG_3971.jpg) (https://postimg.cc/image/igu85ra1l/)

(https://s24.postimg.cc/gfi1mgxcx/IMG_3972.jpg) (https://postimg.cc/image/gfi1mgxcx/)

(https://s4.postimg.cc/jzqtya909/IMG_4001.jpg) (https://postimg.cc/image/jzqtya909/)

(https://s10.postimg.cc/5y9ji7491/IMG_4002.jpg) (https://postimg.cc/image/5y9ji7491/)

(https://s24.postimg.cc/reh3t93j5/IMG_4004.jpg) (https://postimg.cc/image/reh3t93j5/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JF on May 17, 2017, 11:31:42 AM
Can someone tell me what's going on with the leaves on my Fruit Punch mango tree. I have had it in 7 gallon nursery pot for over a year and I plan on stepping it up this weekend.
Some of the new growth looks fine then other leaves are curling and drying up. Out of the ten varieties of mangoes I have this is only happening to the FP mango tree.
Any advice would be greatly appreciated.

(https://s4.postimg.cc/igu85ra1l/IMG_3971.jpg) (https://postimg.cc/image/igu85ra1l/)

(https://s24.postimg.cc/gfi1mgxcx/IMG_3972.jpg) (https://postimg.cc/image/gfi1mgxcx/)

(https://s4.postimg.cc/jzqtya909/IMG_4001.jpg) (https://postimg.cc/image/jzqtya909/)

(https://s10.postimg.cc/5y9ji7491/IMG_4002.jpg) (https://postimg.cc/image/5y9ji7491/)

(https://s24.postimg.cc/reh3t93j5/IMG_4004.jpg) (https://postimg.cc/image/reh3t93j5/)
 

That looks like the new growth that gets fry during Santa Ana's here in SoCal. Do you spray roundup around your trees?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bigalxx15 on May 17, 2017, 11:39:31 AM
No roundup around my house. The strange thing is it's only happening to the FP and there are other mango trees next to it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JF on May 17, 2017, 01:39:29 PM
No roundup around my house. The strange thing is it's only happening to the FP and there are other mango trees next to it.
That's funny my FP looks crappy I wonder if it's some weird pathogen to this variety
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 17, 2017, 02:04:59 PM
Perhaps some pathogen is clogging the xylem?

It would be a good idea to send these pictures to the University of Florida Extension Service at TREC.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on May 17, 2017, 07:35:08 PM
Perhaps some pathogen is clogging the xylem?

It would be a good idea to send these pictures to the University of Florida Extension Service at TREC.

I think I have Randy Ploetz's email at the office.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: AlwaysHotinFL on June 13, 2017, 10:11:11 PM
Checked this whole thread and couldn't find my problem.

Just purchased a 7 gallon Venus from a local nursery- i think it might have been a little neglected, but it was my only option for this variety. My question is it has several ulcerated gray areas on the leaves, some of which have flaked away. It doesn't seem to be affecting the health of the tree, but then again, I've only had it for 3 days and its only been in the ground for 2. Seems more pest related than disease, but then again I'm no Har or Rob or anybody else with experience.

If you enlarge the second image you can see scattered spots on other leaves as well.

Muchas Gracias


(https://s12.postimg.cc/8x68zxjt5/image1.jpg) (https://postimg.cc/image/8x68zxjt5/)

(https://s12.postimg.cc/e9v3e27pl/image2.jpg) (https://postimg.cc/image/e9v3e27pl/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 13, 2017, 11:00:05 PM
Maybe it fell over against something hot?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: AlwaysHotinFL on June 14, 2017, 11:25:26 AM
I suppose anything is possible Har. Ultimately if you're not worried about it than neither am I. Not to mention fruit is still 1-2 years in the future, and I'd rather not spray a tree while it is establishing unless necessary.

Thanks!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Clay on June 21, 2017, 12:55:52 PM
Hi,

I have two small mango trees that have been in the ground two years. The first two years, they branched out and grew fairly vigorously, although one is still a bit spindly. This year, their growth seems to be stunted. They have already tried to push out new branches, which seem to die off as quickly as they emerge. Both trees are slowly starting to form some new leaf buds for another growth flush, but I wanted an opinion on whether something is wrong. They just seem much slower in pushing out new growth than they were in the last two years, with the first round of growth drying up and dying off. Overall the trees look pretty healthy in the existing leaves, although tree #1 has started dropping a few leaves in the last week or so.

These trees are growing in a raised bed with a small retaining wall. The attached photos show the previous growth buds that dried up and died, along with some new buds forming. Should I worry?

Thanks!

Clay

(https://s7.postimg.cc/4vp8yyouv/Tree_1.jpg) (https://postimg.cc/image/4vp8yyouv/)

(https://s7.postimg.cc/erqbylumv/Tree_1a.jpg) (https://postimg.cc/image/erqbylumv/)

(https://s7.postimg.cc/mtekgidef/Tree_1b.jpg) (https://postimg.cc/image/mtekgidef/)

(https://s7.postimg.cc/o22g255cn/Tree_1c.jpg) (https://postimg.cc/image/o22g255cn/)

(https://s7.postimg.cc/9k58u5e1j/Tree_1d.jpg) (https://postimg.cc/image/9k58u5e1j/)

(https://s7.postimg.cc/au32977tj/Tree_2.jpg) (https://postimg.cc/image/au32977tj/)

(https://s7.postimg.cc/omhh4tyl3/Tree_2a.jpg) (https://postimg.cc/image/omhh4tyl3/)

(https://s7.postimg.cc/9nz2aejiv/Tree_2b.jpg) (https://postimg.cc/image/9nz2aejiv/)

(https://s7.postimg.cc/5dkeetefr/Tree_2c.jpg) (https://postimg.cc/image/5dkeetefr/)

(https://s7.postimg.cc/6rc1a4dp3/Tree_2d.jpg) (https://postimg.cc/image/6rc1a4dp3/)

(https://s7.postimg.cc/3vucpikbb/Tree_2e.jpg) (https://postimg.cc/image/3vucpikbb/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 21, 2017, 10:19:20 PM
When tip-cutting is done just above the beginning node of a growth flush, as was done on all these branches pictured, too many buds are activated, in a scrunched-up space.

Those terminal knobs, and the tops of the branches with the top circle of four or five leaves, should be cut off--- and they should be thrown away, in case there are microscopic bud mites in the budcovers.

Also be sure that your fertilizers and micro-nutrient mixes have Boron, Copper, Zinc, and Calcium, as well as the other nutrients, to ensure healthy buds.

And keep excess soil and mulch pulled away from the base of the trunk.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Clay on June 22, 2017, 10:25:04 AM
When tip-cutting is done just above the beginning node of a growth flush, as was done on all these branches pictured, too many buds are activated, in a scrunched-up space.

Just to clarify, are you saying that when tip-cutting I should cut midway between the nodes rather than right above the nodes?

Thank you Har!

Clay
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 22, 2017, 02:06:08 PM
No, just half-an-inch or so below the node.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: shinzo on June 22, 2017, 05:19:09 PM
No, just half-an-inch or so below the node.
For a the case of a flushing young tree, which of the following two tipping options is more effective to trigger rapidly a second vegetative flush (for tree shaping purpose)?
1 - profit from the fact that the tree is flushing and tip the branches once the stem is completely elongated but without waiting for the leaves to harden off? (is there a risk that the second flush comes weak due to it using the left over energy from the current flush? or is it the opposite which is true, i mean the second flush profit from the momentum triggered by the current flush)
2 - wait for the current flush to harden off and the tree to recover from the current effort and gather some more energy before tipping again ?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 23, 2017, 08:33:27 PM
Either way.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: behlgarden on June 26, 2017, 01:18:41 PM
I am redoing my mango pests and diseases treatment this summer after seeing dieback. I plan on doing the following drench and foliar:
1. Abound fungicide
2. Apply Mn.
3. Use micro nutrient mix that has Mn, Cu, Fe, S, Boron, and Mg. 
4. Finally on newly planted and stunted plants, I am planning to use Superthrive growth hormone. stay tuned for before and after pictures.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Saltee on June 26, 2017, 08:16:28 PM
Well summer has brought weevils to my mango tree and my peach tree. For some reason they are only eating my Graham mango and Flogrande peach, but my Nam Doc Mai has perfect leaves 15 feet away. I'm not sure if they are little notchersnor Sri Lanka weevils... but I did a imidacloprid treatment (bayer lol)

I noticed these things huddling together and playing hide and seek with me, what are they? They were focused on the stem... borer?
(https://s8.postimg.cc/9bwr3nqlt/IMG_5222.jpg) (https://postimg.cc/image/9bwr3nqlt/)

(https://s8.postimg.cc/ck18gpcvl/IMG_5224.jpg) (https://postimg.cc/image/ck18gpcvl/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: simon_grow on June 26, 2017, 09:31:18 PM
Looks like sharpshooters to me. I believe there is a possibility that they can transfer diseases because they suck the juice from new growth.

Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Saltee on June 26, 2017, 09:55:28 PM
Well summer has brought weevils to my mango tree and my peach tree. For some reason they are only eating my Graham mango and Flogrande peach, but my Nam Doc Mai has perfect leaves 15 feet away. I'm not sure if they are little notchersnor Sri Lanka weevils... but I did a imidacloprid treatment (bayer lol)

I noticed these things huddling together and playing hide and seek with me, what are they? They were focused on the stem... borer?
(https://s8.postimg.cc/9bwr3nqlt/IMG_5222.jpg) (https://postimg.cc/image/9bwr3nqlt/)

(https://s8.postimg.cc/ck18gpcvl/IMG_5224.jpg) (https://postimg.cc/image/ck18gpcvl/)

My poor tree is getting bombarded by hoppers and weevils... good thing it's a vigorous tree. Things flushing like crazy
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Saltee on June 26, 2017, 11:09:41 PM
Looks like sharpshooters to me. I believe there is a possibility that they can transfer diseases because they suck the juice from new growth.

Simon

Oh wow they are actually called sharpshooters... I thought it was a hopper because it kinda resembled it
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: 561MangoFanatic on June 27, 2017, 12:06:36 AM

(https://s1.postimg.cc/oenn5f00r/IMG_2612.jpg) (https://postimg.cc/image/oenn5f00r/)

(https://s1.postimg.cc/am989s997/IMG_2613.jpg) (https://postimg.cc/image/am989s997/)

(https://s1.postimg.cc/6skdedhaz/IMG_2614.jpg) (https://postimg.cc/image/6skdedhaz/)

(https://s1.postimg.cc/ln8ysjqvv/IMG_2615.jpg) (https://postimg.cc/image/ln8ysjqvv/)

What is doing this to my Rosa Mango tree? & only Rosa's new leaves? Also how can I prevent & treat it?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 27, 2017, 09:52:07 AM
Probably Chafer Beetles, or June Beetles, or grasshoppers....

Catch them and smash them.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Saltee on June 27, 2017, 02:41:15 PM
Do I have anything to worry about with these sharpshooters? All I could find is that they are a problem in California when it comes to grapes, but really nothing else useful. Yesterday after I picked out as many weevils and scared off as many shooters as possible I applied Bauer garden and citrus systemic thru the roots.

Unrelated to mangos but my blood oranges have a caterpillar that looks like bird or lizard crap tearing it up too

Out of curiousity why is it that neither weevil or sharpshooter attack my NDM? Literally all my fruit trees are under attack, except this tree. It amazes me
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: simon_grow on June 27, 2017, 10:58:47 PM
Do I have anything to worry about with these sharpshooters? All I could find is that they are a problem in California when it comes to grapes, but really nothing else useful. Yesterday after I picked out as many weevils and scared off as many shooters as possible I applied Bauer garden and citrus systemic thru the roots.

Unrelated to mangos but my blood oranges have a caterpillar that looks like bird or lizard crap tearing it up too

Out of curiousity why is it that neither weevil or sharpshooter attack my NDM? Literally all my fruit trees are under attack, except this tree. It amazes me

It could be that the NDM produces a compound, perhaps a turpene that the weevils and sharpshooters do not like. See reply 7 from this thread. http://tropicalfruitforum.com/index.php?topic=20816.0 (http://tropicalfruitforum.com/index.php?topic=20816.0)

That thread talks more about rootstock influence but the scion can have the same affect.

I'm not sure how detrimental a bug the sharpshooters are in Florida but anytime there is a wound in a tree, there is an opening for microorganism to enter and gain a foothold. I've seen sharpshooters on my Citrus as well and I sure hope that citrus diseases can't be passed onto mangos and vice versa.

Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: simon_grow on June 27, 2017, 11:03:37 PM
I am redoing my mango pests and diseases treatment this summer after seeing dieback. I plan on doing the following drench and foliar:
1. Abound fungicide
2. Apply Mn.
3. Use micro nutrient mix that has Mn, Cu, Fe, S, Boron, and Mg. 
4. Finally on newly planted and stunted plants, I am planning to use Superthrive growth hormone. stay tuned for before and after pictures.

Hey Behl, that sounds like a plan. We just have to be careful to have a well planned out schedule for alternating fungicides so that the disease pressures don't build up immunity to any specific class of fungicide. I believe Abound can be used 2-3 times but I have to check my notes.

Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: behlgarden on June 28, 2017, 10:40:11 AM
Simon,

I saw some dieback and blackening of wood at tip ends. Normally per my observation all this starts with terminal end when bloom is removed OR wood is pruned, probably it exposes wood to elements including bacteria and fungus. I recently cut all black ends and dieback wood and sprayed my cocktail mix of fungicide on open wounds. lets see if the blackening continues OR it solves the issue.

I am keeping abound use to twice a year. Once after harvest to conceal wounds, once before bloom in winter/early spring. However, I plan on spraying all open wounds whenever I prune.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on June 29, 2017, 06:51:46 AM
This morning I noticed a few leaves on my Pickering with small white patches.  I only saw 1 leaf like that on my Honey KIss.  Any idea what it may be?  I did a foliar feeding on Sunday with Turf Pro, Indian River Fish Fertilizer, and Dr. Earth Ocean Seaweed - maybe that has something to do with it?
(https://s24.postimg.cc/sz5wt2s9d/20170629_063537.jpg) (https://postimg.cc/image/sz5wt2s9d/)

(https://s24.postimg.cc/x70p1ttox/20170629_063554.jpg) (https://postimg.cc/image/x70p1ttox/)

(https://s24.postimg.cc/67wu6o781/20170629_063606.jpg) (https://postimg.cc/image/67wu6o781/)

(https://s24.postimg.cc/wrpf8t7rl/20170629_063632.jpg) (https://postimg.cc/image/wrpf8t7rl/)

(https://s24.postimg.cc/s4jd71kep/20170629_063706_001.jpg) (https://postimg.cc/image/s4jd71kep/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 29, 2017, 06:32:15 PM
That is probably mango scale.  Rub it off, or pressure wash it off.

Or spray with an oil or saop, at label-recommended rates, in slow-drying weather conditions.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on June 29, 2017, 08:30:08 PM
Rubbed it off.  Thank you for your help Har!!!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on June 29, 2017, 10:20:44 PM
Wouldn't spray oil in this heat and sun.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FrankDrebinOfFruits on July 01, 2017, 07:02:42 PM
Planted this DOT last week.

The leaves turned yellow and look dried out. Any ideas?

(https://s12.postimg.cc/fhitfm59l/20170701_095702.jpg) (https://postimg.cc/image/fhitfm59l/)

(https://s9.postimg.cc/t3cdk9ny3/20170701_095710.jpg) (https://postimg.cc/image/t3cdk9ny3/)

(https://s8.postimg.cc/65q5j3nld/20170701_095717.jpg) (https://postimg.cc/image/65q5j3nld/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 01, 2017, 09:49:44 PM
During transportation from the nursery, it may have been exposed to gale-force or hurricane-force winds in an open trailer or pickup.  Or it could have been inside closed, turned-off vehicle in the sun, for 15 minutes or more.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jose Spain on July 05, 2017, 02:40:17 PM
I have some rootstocks of Gomera 3 getting ready for grafting and today I found out what seems micro-nutrient deficiency in 3 of them. About 7/10 days ago I have fertilised them with guano, but I doubt it did (for good or bad) any effect yet. Seems like a deficiency of Iron or Manganese, but I observed in one of the plants that the leaves are twisting like the horn of a goat and I don't know if that points to another kind of problem.

(https://s9.postimg.cc/hx4bvtuor/P7050004.jpg) (https://postimg.cc/image/hx4bvtuor/)

(https://s9.postimg.cc/foq5ehnkr/P7050001.jpg) (https://postimg.cc/image/foq5ehnkr/)

(https://s9.postimg.cc/8ms7sajyz/P7050002.jpg) (https://postimg.cc/image/8ms7sajyz/)

(https://s9.postimg.cc/3pen76hzv/P7050003.jpg) (https://postimg.cc/image/3pen76hzv/)


Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 05, 2017, 09:15:29 PM
I don't recognize that symptom.  Please post again when the leaves mature / harden up.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jose Spain on July 06, 2017, 03:40:10 PM
I don't recognize that symptom.  Please post again when the leaves mature / harden up.

Thank you Har, I will post pictures when they mature. If you'd have to say what could be just from colour, what would you say? Iron deficiency?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on August 02, 2017, 08:26:30 PM
I notice a lot of black ants underneath the leaves on my Fairchild and Honey Kiss trees, and it looks like they're nesting.  The Fairchild looks a lot worse, and I just started noticing them on the Honey Kiss.  I was doing some Googling, and read that the ants could be a sign of mango scale?  I've been rubbing off small white patches when I see them on leaves, but haven't been spraying Neem or anything.  Are the pics a symptom of the mango scale and this is what happens when it progresses?

FAIRCHILD
(https://s3.postimg.cc/ihascobe7/20170802_193839.jpg) (https://postimg.cc/image/ihascobe7/)

(https://s3.postimg.cc/fhzabtcj3/20170802_194341.jpg) (https://postimg.cc/image/fhzabtcj3/)


HONEYKISS
(https://s3.postimg.cc/rmejsspf3/20170802_193641.jpg) (https://postimg.cc/image/rmejsspf3/)

(https://s3.postimg.cc/3k2bbny5r/20170802_194139.jpg) (https://postimg.cc/image/3k2bbny5r/)

(https://s3.postimg.cc/4wfezt67j/20170802_194221.jpg) (https://postimg.cc/image/4wfezt67j/)




Btw this is an example of the white patches I keep rubbing off:
(https://s24.postimg.cc/sz5wt2s9d/20170629_063537.jpg) (https://postimg.cc/image/sz5wt2s9d/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitFreak on August 02, 2017, 09:44:45 PM
I notice a lot of black ants underneath the leaves on my Fairchild and Honey Kiss trees, and it looks like they're nesting.  The Fairchild looks a lot worse, and I just started noticing them on the Honey Kiss.  I was doing some Googling, and read that the ants could be a sign of mango scale?  I've been rubbing off small white patches when I see them on leaves, but haven't been spraying Neem or anything.  Are the pics a symptom of the mango scale and this is what happens when it progresses?

FAIRCHILD
(https://s3.postimg.cc/ihascobe7/20170802_193839.jpg) (https://postimg.cc/image/ihascobe7/)

(https://s3.postimg.cc/fhzabtcj3/20170802_194341.jpg) (https://postimg.cc/image/fhzabtcj3/)


HONEYKISS
(https://s3.postimg.cc/rmejsspf3/20170802_193641.jpg) (https://postimg.cc/image/rmejsspf3/)

(https://s3.postimg.cc/3k2bbny5r/20170802_194139.jpg) (https://postimg.cc/image/3k2bbny5r/)

(https://s3.postimg.cc/4wfezt67j/20170802_194221.jpg) (https://postimg.cc/image/4wfezt67j/)




Btw this is an example of the white patches I keep rubbing off:
(https://s24.postimg.cc/sz5wt2s9d/20170629_063537.jpg) (https://postimg.cc/image/sz5wt2s9d/)

Soft scale if I'm not mistaken but I believe there are many different types.  Ants are attracted to the secreations.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 02, 2017, 10:48:36 PM
Yes, it is mango scale, which is a soft scale.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gozp on August 03, 2017, 03:19:00 AM
Was wondering what killed my 15 gallon lemon zest.

It started to soften(gewy) top line of graft where it receives full sun. Then eventually this as a result.


(https://s3.postimg.cc/pg1n5urqn/20170729_194104.jpg) (https://postimg.cc/image/pg1n5urqn/)


(https://s4.postimg.cc/dflaps35l/20170729_193851.jpg) (https://postimg.cc/image/dflaps35l/)

(https://s1.postimg.cc/od8mey9ij/20170729_193833.jpg) (https://postimg.cc/image/od8mey9ij/)

(https://s2.postimg.cc/qqp625gqt/20170729_194006.jpg) (https://postimg.cc/image/qqp625gqt/)

(https://s2.postimg.cc/4pz8fn76d/20170729_194003.jpg) (https://postimg.cc/image/4pz8fn76d/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on August 03, 2017, 06:06:08 AM
Thanks Guanabus and FruitFreak!  I'm going to start on a neem oil treatment regimen for the scale then.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 03, 2017, 06:19:48 PM
Not when the temperature is very hot!  Leaves may get burned.

Neem oil, and any other oil or soap, will only work in slow drying conditions, so that an insect stays covered with wet oil or soap until it has suffocated-- if the spray dries too soon, anything can catch its breath again.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: CapeCoralGuy on August 03, 2017, 06:52:04 PM
Thanks everyone for such great information. Im my area, SWFlorida, our number one problem with fruit trees is the sirilanka weebel. Some trees, specially the mamey, lychee, and canisteel varieties seem to be their favorites to colonize.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on August 03, 2017, 08:41:40 PM
Thanks Har.  I just neemed the plants @ 8 PM, so the sun was down.  According to the weather forecast, it shouldn't rain tomorrow in my neck of the woods..fingers crossed.  I'm planning on a second treatment in 2 weeks.

I actually noticed a couple of ants on my Pickering, and slightly more ants on my Maha Chanok.  Upon closer inspection, I did see some of those white patches on both trees.  Is the scab contagious from tree to tree or can ants carry it from tree to tree? 

I'm actually going to be planting out the Pickering this weekend in my backyard, and it will be about 10 feet away from a brand new 7 gallon Sweet Tart.  I'm hoping it's not going to spread!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 04, 2017, 08:33:57 PM
Ants do carry crawlers to new pastures.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on August 04, 2017, 09:38:26 PM
I was outside checking to make sure no neem burn and all looks great, except now I'm noticing sap dripping from one of my Pickering branches.  The Pickering doesn't have as many ants on it, really not bad, and I barely notice the scab in it.  I'll be planting it in the ground tomorrow away fro. The Fairchild and Pina Colada which have many more ants and a larger scab issue.

But what could be causing the sap to drip on the Pickering?  Is it related to the scab?
(https://s2.postimg.cc/zcfffl6c5/20170804_193245.jpg) (https://postimg.cc/image/zcfffl6c5/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 05, 2017, 03:15:12 PM
You mean scale, not scab.

This picture shows where a leaf was broken off, and the wound "bled."
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on August 06, 2017, 03:23:30 PM
Thank you Har!  Indeed, I meant scale and not scab.  I removed a couple leaves with the scale the prior day, so you're spot on.  Glad to know its not disease relayed.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropheus76 on August 07, 2017, 08:16:20 AM
I imagine with the lack of winter we have had the last couple years is why we suddenly have started seeing these new weevils, the grey and orange ones that use their legs to latch onto your fingers when you pic them up. They have some peculiar eating habits. I have seen them on Graham and Lemon zest, while they completely ignored the Cotton Candy, Sweet tart, and pickering. Further they went after my Fuyu Persimmons preventing fruit, my All spice trees, and a couple others here and there, but completely ignored everything in between.

I am not sure what spray to put on them for the roots. This weather kind of annoyed me since in spring we went instantly from 60s weather to 80s and I never had time to put on my neem and/or other oils so root drenching is the only option I have.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Yoda on August 07, 2017, 11:24:26 AM
Need some help with this seedling. Looks like anthracnose to me: 

(https://s1.postimg.cc/pbjh6qlxn/Photo_07-08-17_18_05_51.jpg) (https://postimg.cc/image/pbjh6qlxn/)


Growth at the top has appeared but is halted:

(https://s1.postimg.cc/rinpunr7v/Photo_07-08-17_18_06_10.jpg) (https://postimg.cc/image/rinpunr7v/)


I've sprayed with mancozeb 5 days ago, though the top leaf seems to be deteriorating. Here's a pic of it last week:

(https://s2.postimg.cc/3xo2c41l1/Photo_31-07-17_16_17_30.jpg) (https://postimg.cc/image/3xo2c41l1/)


Lower leaves have black tips. I've added some dried banana peel (potassium) just in case :

(https://s2.postimg.cc/9izhp8m7p/File_30-06-17_17_53_48.jpg) (https://postimg.cc/image/9izhp8m7p/)


Any thoughts / advice would be appreciated.
Thanks!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 07, 2017, 01:12:42 PM
The soil in the container may be staying too wet.  Let the top inch get dry before each watering.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: floridays on August 07, 2017, 08:40:44 PM
Mango Doctors, I have two trees towards the back of my property - a Valencia Pride and a Lancetilla. The VP seems to have stunted growth and small leaves and the Lancetilla has black and dying leaf tips.

I'm guessing it's some deficiency...

Thanks in advance for any recommendations!

Scott

Lancetilla

(http://i299.photobucket.com/albums/mm315/floriday/Yard%20misc/35B5BC7E-D86E-4838-8E61-8BB196103A52_zpsbxgcvd7q.jpg) (http://s299.photobucket.com/user/floriday/media/Yard%20misc/35B5BC7E-D86E-4838-8E61-8BB196103A52_zpsbxgcvd7q.jpg.html)

Valencia Pride

(http://i299.photobucket.com/albums/mm315/floriday/Yard%20misc/4C7C50D5-773D-430C-83E8-2A909468ED4F_zpshrmbomyo.jpg) (http://s299.photobucket.com/user/floriday/media/Yard%20misc/4C7C50D5-773D-430C-83E8-2A909468ED4F_zpshrmbomyo.jpg.html)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Yoda on August 08, 2017, 11:01:01 AM
The soil in the container may be staying too wet.  Let the top inch get dry before each watering.

Hmm. 

The soil does tend to stay curiously humid between watering. I'll start manually watering when the soil dries & also might change the soil with a better draining medium, perhaps a cactus mix. Will that do it? Later on I'll look into gritty mixes.

Thanks for the feedback!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 08, 2017, 03:05:38 PM
Both pictures show multiple deficiencies, especially of Magnesium, Potassium, and Zinc. 

Make sure soil doesn't stay mucky wet, or be in prolonged drought either.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: floridays on August 08, 2017, 04:31:20 PM
Thank you Har, I will treat accordingly. One is in a mucky area that is shaded by larger nuisance trees that will be coming down soon.

Thanks again,

Scott
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jose Spain on August 10, 2017, 05:37:39 AM
I don't recognize that symptom.  Please post again when the leaves mature / harden up.

Here some new pictures of those twisted leaves today:


(https://s27.postimg.cc/xnefaagxr/P8090020.jpg) (https://postimg.cc/image/xnefaagxr/)


(https://s28.postimg.cc/b9aupvzih/P8090022.jpg) (https://postimg.cc/image/b9aupvzih/)


I think it could be too much heat and sun. It was just this plant, the other 14 rootstocks didn't show this symptom, but here are some with other different ones:

This is happening to 3 of them, leaves dond't develop one of the halves and don't grow properly. I suspect overfertilisation when I added guano at beginning of July:


(https://s27.postimg.cc/6ypzkrum7/P8090024.jpg) (https://postimg.cc/image/6ypzkrum7/)



(https://s28.postimg.cc/cykfyobyh/P8090025.jpg) (https://postimg.cc/image/cykfyobyh/)



(https://s27.postimg.cc/6kw8gmmi7/P8090027.jpg) (https://postimg.cc/image/6kw8gmmi7/)

And finally I lost one rootstock because it dried out after suffering this strange (to me) damage at the base of the stem, I say strange because it just affect to one particular section, the rest seems healthy up and down of it:


(https://s27.postimg.cc/x1yn5aatb/P8090019.jpg) (https://postimg.cc/image/x1yn5aatb/)

The plant seemed not affected for a few weeks, but finally died:


(https://s27.postimg.cc/59t2lwga7/P8090016.jpg) (https://postimg.cc/image/59t2lwga7/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 10, 2017, 06:33:08 PM
Jose Spain, pictures 1-5 probably show deficiencies of Zinc, Copper, and Manganese.

I have never worked with guano.  Is it high in Sodium?  That might cause some burns.

The plant that died was girdled, by disease or by scalding water (such as from water in a hose or spray stake irrigation lines, in the sun).  The full circle of dead bark, and dead cambium tissue, prevented any glucose from photosynthesis from going on down to the roots.  Once the roots starved to death, then the top suddenly received no more water.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Clay on August 18, 2017, 12:49:07 PM
My Tequila Sunrise mango tree has been the ground a bit over two years. It has been producing some very nice growth flushes the last two months. About half of the new growth looks healthy, with some leaves over a foot long. But the other half, the new leaves come out twisted, stunted and some just die off. I have been giving it minor element supplements. Does this like some kind of disease, deficiency, or nothing to worry about?

(https://s30.postimg.cc/vko4legh9/TS1.jpg) (https://postimg.cc/image/vko4legh9/)

(https://s30.postimg.cc/5hc5ryeb1/TS2.jpg) (https://postimg.cc/image/5hc5ryeb1/)

(https://s30.postimg.cc/sy40qpzvx/TS3.jpg) (https://postimg.cc/image/sy40qpzvx/)

(https://s30.postimg.cc/vth3xl3vx/TS4.jpg) (https://postimg.cc/image/vth3xl3vx/)

(https://s30.postimg.cc/pttctxj3h/TS5.jpg) (https://postimg.cc/image/pttctxj3h/)

(https://s30.postimg.cc/zfmxa8a99/TS6.jpg) (https://postimg.cc/image/zfmxa8a99/)

(https://s30.postimg.cc/5vdhrjyel/TS7.jpg) (https://postimg.cc/image/5vdhrjyel/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jose Spain on August 18, 2017, 05:11:07 PM
Jose Spain, pictures 1-5 probably show deficiencies of Zinc, Copper, and Manganese.

I have never worked with guano.  Is it high in Sodium?  That might cause some burns.

The plant that died was girdled, by disease or by scalding water (such as from water in a hose or spray stake irrigation lines, in the sun).  The full circle of dead bark, and dead cambium tissue, prevented any glucose from photosynthesis from going on down to the roots.  Once the roots starved to death, then the top suddenly received no more water.

Sorry, I didn't see this answer until today. Thank you for the explanation. Regarding your question about Na, I don´t know, the box doesn't specify it, it's coming from sea birds and is low in chloride, this is the info it gives:
(https://s4.postimg.cc/nb3c829d5/P8180005.jpg) (https://postimg.cc/image/nb3c829d5/)

After reading your answer, I think that it's very likely that the deficiencies were caused by excess of one particular element as a result of overfertilization with the guano (I'm washing out that posible excess by overwatering these plants). Actually last flushes seem to be OK. I'll keep updating is something interesting comes up. Thanks  ;)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: shinzo on August 18, 2017, 06:20:59 PM
My Tequila Sunrise mango tree has been the ground a bit over two years. It has been producing some very nice growth flushes the last two months. About half of the new growth looks healthy, with some leaves over a foot long. But the other half, the new leaves come out twisted, stunted and some just die off. I have been giving it minor element supplements. Does this like some kind of disease, deficiency, or nothing to worry about?

(https://s30.postimg.cc/vko4legh9/TS1.jpg) (https://postimg.cc/image/vko4legh9/)

(https://s30.postimg.cc/5hc5ryeb1/TS2.jpg) (https://postimg.cc/image/5hc5ryeb1/)

(https://s30.postimg.cc/sy40qpzvx/TS3.jpg) (https://postimg.cc/image/sy40qpzvx/)

(https://s30.postimg.cc/vth3xl3vx/TS4.jpg) (https://postimg.cc/image/vth3xl3vx/)

(https://s30.postimg.cc/pttctxj3h/TS5.jpg) (https://postimg.cc/image/pttctxj3h/)

(https://s30.postimg.cc/zfmxa8a99/TS6.jpg) (https://postimg.cc/image/zfmxa8a99/)

(https://s30.postimg.cc/5vdhrjyel/TS7.jpg) (https://postimg.cc/image/5vdhrjyel/)
I thing zinc deficieny and some insects sucking the sap of the young leaves when they are flushing. Forum experts may give you more accurate diagnosis.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 18, 2017, 09:24:48 PM
Yes, Zinc deficiency and Copper deficiency, and maybe some excess Boron or Sodium.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Clay on August 19, 2017, 12:55:00 PM
Yes, Zinc deficiency and Copper deficiency, and maybe some excess Boron or Sodium.
I have been using the Southern Ag Essential Minor Elements about once a month, about ¼ to ½ cup spread in the ring at the drip line. It contains: Magnesium 8%, Manganese 2%, Iron 5%, Sulfur 8%, Copper .25%, Zinc 0.5%, Boron .03%. Is it safe to use more?

The confusing part to me is, how can some branches have lush healthy growth, while other branches have the weak stunted flushes? I would have thought that whole tree would more uniformly weak if there is a deficiency. I don't see any signs of fungus or disease. I do see the occasional sharpshooter on the plant, but no infestations. I just hose off the sharpshooters and they fly away.

My second mango tree (Gold Coast) about ten feet away isn't having any of these symptoms.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: ibliz on August 19, 2017, 02:23:48 PM


(https://s30.postimg.cc/5hc5ryeb1/TS2.jpg) (https://postimg.cc/image/5hc5ryeb1/)

(https://s30.postimg.cc/sy40qpzvx/TS3.jpg) (https://postimg.cc/image/sy40qpzvx/)

(https://s30.postimg.cc/vth3xl3vx/TS4.jpg) (https://postimg.cc/image/vth3xl3vx/)

(https://s30.postimg.cc/zfmxa8a99/TS6.jpg) (https://postimg.cc/image/zfmxa8a99/)


These look a lot like thrip damages. Can you post a picture of the underside of the new leaves? Better yet, if you have a 10x magnifying glass, look at the underside of the leaves and check if there is any elongated critters.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Clay on August 19, 2017, 11:35:23 PM
These look a lot like thrip damages. Can you post a picture of the underside of the new leaves? Better yet, if you have a 10x magnifying glass, look at the underside of the leaves and check if there is any elongated critters.

While I don't know what thrips look like, I do keep a pretty keen eye out for pests. I have aphids and spider mites on other plants around the yard occasionally, but not on the mango trees so far. I do see one or two sharpshooters on the new mango branches once in awhile, and I either shake them off, or blast them with water.

I tried to get a bunch of close-ups of the undersides of the leaves, but they look pretty clean to me, even though they are curling up and turning brown. On one of them, I noticed there are also brown spots on the branch. Keep in mind that only about half of the new leaf flushes look curled,  brown and stunted. The other new flushes look very robust and healthy (i.e.: normal), some with leaves over a foot long.



(https://s30.postimg.cc/bd7xkupd9/IMG_4739.jpg) (https://postimg.cc/image/bd7xkupd9/)

(https://s30.postimg.cc/lklvjim7h/IMG_4740.jpg) (https://postimg.cc/image/lklvjim7h/)

(https://s30.postimg.cc/vfd0pqq5p/IMG_4741.jpg) (https://postimg.cc/image/vfd0pqq5p/)

(https://s30.postimg.cc/f32z00bu5/IMG_4743.jpg) (https://postimg.cc/image/f32z00bu5/)

(https://s30.postimg.cc/temh4wu0d/IMG_4744.jpg) (https://postimg.cc/image/temh4wu0d/)

(https://s30.postimg.cc/5xum658fh/IMG_4745.jpg) (https://postimg.cc/image/5xum658fh/)

(https://s30.postimg.cc/pxkf1xuy5/IMG_4746.jpg) (https://postimg.cc/image/pxkf1xuy5/)


(https://s30.postimg.cc/476zqx1il/IMG_4747.jpg) (https://postimg.cc/image/476zqx1il/)

(https://s30.postimg.cc/he1146mlp/IMG_4748.jpg) (https://postimg.cc/image/he1146mlp/)

(https://s30.postimg.cc/eca8u89gt/IMG_4751.jpg) (https://postimg.cc/image/eca8u89gt/)

(https://s30.postimg.cc/40xw1khrh/IMG_4757.jpg) (https://postimg.cc/image/40xw1khrh/)

(https://s30.postimg.cc/cuosio4q5/IMG_4758.jpg) (https://postimg.cc/image/cuosio4q5/)

(https://s30.postimg.cc/sc7p8mlt9/IMG_4759.jpg) (https://postimg.cc/image/sc7p8mlt9/)

(https://s30.postimg.cc/82adthkod/IMG_4761.jpg) (https://postimg.cc/image/82adthkod/)

(https://s30.postimg.cc/uppmzn08d/IMG_4762.jpg) (https://postimg.cc/image/uppmzn08d/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 20, 2017, 12:45:56 PM
Nice set of pictures!

The tender top leaves look seriously deficient in Zinc and Copper, and the previous flush looks mildly deficient in Iron--- so the new growth is probably also deficient in Iron.

Spraying the Southern Ag Citrus micronutrient mix at a dilute / weak / lowest-recommended rate, with  some kelp added, on the new growth and on the still-hardening-up previous flush, in the very early morning, or before sunset, would be more effective than the drenching in this case--- as you have already found that not enough is rising from the soil, to some portions of your tree.

As Ibliz pointed out, the scorch marks do look like thrips damage--- but that still needs to be verified.

Do you have a traditional magnifier, in the 8X to 16X range?  Or a digital camara phone attachment to take microscopic pictures?

The stem blackening looks like anthracnose.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Clay on August 20, 2017, 03:18:46 PM
Nice set of pictures!

The tender top leaves look seriously deficient in Zinc and Copper, and the previous flush looks mildly deficient in Iron--- so the new growth is probably also deficient in Iron.

Spraying the Southern Ag Citrus micronutrient mix at a dilute / weak / lowest-recommended rate, with  some kelp added, on the new growth and on the still-hardening-up previous flush, in the very early morning, or before sunset, would be more effective than the drenching in this case--- as you have already found that not enough is rising from the soil, to some portions of your tree.

As Ibliz pointed out, the scorch marks do look like thrips damage--- but that still needs to be verified.

Do you have a traditional magnifier, in the 8X to 16X range?  Or a digital camara phone attachment to take microscopic pictures?

The stem blackening looks like anthracnose.

I picked up a jug of Iron & Zinc chelate liquid and did a foliar spray this morning. My Myer lemon was also having some yellowing on some of its leaves, so I sprayed my citrus trees and my apple tree while I was at it. It looks like Home Depot also has the Southern Ag Citrus nutritional spray in stock, so I'll pick up a jug of that next time I'm over there. How often should I use it? Monthly? Weekly?

I don't have any macro attachments for my phone or camera, nor a microscope, so those pictures are about the best I can do.

Should I prune off all the damaged areas and just let the healthy areas grow? Or will the damaged areas sprout out new healthy leaves after getting the foliar micro-nutrients?

I did get a soil test kit and tested around a few of my trees. I got pH readings in the 6.0 - 6.5 range, which doesn't seem too bad, although 5.0 might be better.

Thanks for the suggestions!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 20, 2017, 09:05:32 PM
I might cut off the one twig with the anthracnose in the bark;  otherwise, just spray on the nutrients, per labeled directions.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: ibliz on August 21, 2017, 12:31:28 PM
Clay and Har

It is not a thrip damage because the underside of the leaves midribs are squeaky clean.


Thrip damage would look like this from the underside.
(https://s27.postimg.cc/np5d5ea5b/Thrips_Damage_01.jpg) (https://postimg.cc/image/np5d5ea5b/)


I have, however, encountered something similar to your problem, but in a much more milder way :
:
(https://s27.postimg.cc/rzk10zf8f/Unknown_Disorder.jpg) (https://postimg.cc/image/rzk10zf8f/)

I had no idea what caused it at that time, and the problem went away before I could find a remedy.

I tried browsing through my books on mangoes and found this :

(https://s27.postimg.cc/z46fnrbvj/Screen_Shot_2017-08-21_at_11.22.44_PM.png) (https://postimg.cc/image/z46fnrbvj/)

So it could be caused by multiple micro nutrient deficiency.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Clay on August 21, 2017, 03:23:17 PM
Thank you Har and Ibliz for the recommendations. I think that I was a bit baffled because some branches were robust and healthy, while others looked weak and stunted. I would have guessed that a nutrient deficiency would affect the whole tree pretty much evenly, but I see now that this not the case. I will give it a foliar spray with the minors twice a month for the next couple of months, plus more on the soil at the drip line. I'm doing the same for my grapefruit and Meyer lemon, and my Fuji Apple tree. I am glad to know there is no major disease or infestation happening!

Happy Fruiting!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitFool on August 26, 2017, 01:47:14 PM
(https://s27.postimg.cc/bpcmlxfpr/Mango_Graft.jpg) (https://postimg.cc/image/bpcmlxfpr/)

Hello, Experts,

My ST graft on a seedling seems to have gotten some disease on the root stock, I see bark turning brown on the root stock, just above the plastic bag.
I saw lot of ant activity going in the plastic bag, so to get them out, I over-watered the root zone, I am not sure if that is the cause?

Please let me know how to save this young tree?

Thanks,
FruitFool
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 27, 2017, 12:07:45 AM
Looks serious!

Did you paint vaseline or tangle-foot on it, to keep off the ants?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitFool on August 27, 2017, 12:20:18 AM
Hi, Har,

No tangle foot used.
Had only drowned the root zone in water after seeing lot of ants. It is possible that the bark
was already browning and I did not notice at that time.

It was alright with all green bark in my nursing area where I keep all my grafts under papaya
shade, I thought this plant is ready to go in ground (last week) so moved it out under another
tree where it gets some dappled sun light before moving to full sun.

Thanks,
FruitFool
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: shinzo on August 27, 2017, 06:27:11 AM
Looks serious!

Did you paint vaseline or tangle-foot on it, to keep off the ants?
Hi Har, do you recommend painting vaseline on the tree trunk to repell ants? if so do you paint it directly on the trunk or do you wrap the trunk with something and painting over it?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 27, 2017, 01:53:35 PM
Vaseline or Tanglefoot or other grease or undeluted oil directly on bark, kills the bark;  that is why I asked, after seeing the picture of apparently dead bark.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pineislander on September 02, 2017, 08:03:07 AM
I am doing major corrective pruning on a 50 tree mango orchard. My question is about using micronutrient sprays and fish emulsion.
The trees are 6-8 years old and have not been pruned, fertilized sprayed or irrigated for years. They are a mix of compact growers and tall erect varieties. As a result of no pruning at all many trees have grown tall and wide with sparse inner canopies. Especially on the erect types I have had to reduce canopy size overall and open up the center by removing vertical leader branches and tipping back most every branch at least one to two internodes. I removed all dead/questionable wood and used best practices. The result is a reduction of leaf area from 50-90% depending on the tree.. I understand that with such drastic measures I can expect a greatly reduced yield next season, that is tolerable to me in order to get the grove under control.

I would like to do a general micronutrient spray as the trees recover and begin to flush. I also have available a homemade fish emulsion fertilizer, typically this is 5-1-1 NPK. I have a backpack mist blower to apply these.

Questions:
At what point in the new flush should I use the foliar micronutrient?
 
Will application at early flush be OK, or should I wait till later on as the flush hardens?

Air temps even at night still approach 77-80 degrees, should I apply foliars later afternoon or early morning?

Would fish emulsion be helpful on these trees at some point in regrowing the canopy?

What advice can you give about managing a regrowing canopy after renovation, I expect I will need to tip or remove the more vertical growth and inward growth, but should I continue tipping through multiple flushes heading towards winter?

Thanks for any help on this, there is a lot of info out on training young trees and maintenance pruning but scant on helping recover after major pruning.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 02, 2017, 11:01:09 PM
Either early morning or early evening.

Two or three dilute sprays during each new flush would be better than one concentrated spray.  All stages of new growth will be receptive to nutritional sprays, and even old growth benefits a little.

Thin growth so that all leaves receive some sun and breeze.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: samuelforest on October 09, 2017, 12:36:02 PM

(https://s1.postimg.cc/9hoibm9lff/20171009_123034.jpg) (https://postimg.cc/image/9hoibm9lff/)

Hi everyone,

Can anyone identify what's happening to my mango tree? It's now flushing and it's a nam doc mai. Hard to see, but there's black spots on the new growth.It's curretly indoor under my 315w ceramic metal halide.

thanks
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gozp on October 20, 2017, 10:37:33 PM
What deficiency may this be?


(https://s1.postimg.cc/2kylyolbq3/20171020_152548.jpg) (https://postimg.cc/image/2kylyolbq3/)

(https://s1.postimg.cc/1zoycdt8az/20171020_152535.jpg) (https://postimg.cc/image/1zoycdt8az/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 21, 2017, 02:29:44 PM
Probably deficiencies of Copper and Zinc.

Please photograph again when the leaves harden up.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mango Stein on October 22, 2017, 04:52:18 AM

(https://s1.postimg.cc/5uowu6hr23/Kwan_manglets.jpg) (https://postimg.cc/image/5uowu6hr23/)

My manglets on my Kwan (Burmese) are deformed - not sure why. They made it through the winter ok but now as if stung by fruit fly?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 22, 2017, 11:12:22 AM
Not fruit fly--- they are only interested in ripening fruit.

Possibly damage from Psylids or stink bugs, etc.

Possibly fungal infection, such as anthracnose.  Spray with Copper or other fungicide, at mild rates, to not harm the flowers.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: greenman62 on October 22, 2017, 12:36:13 PM

(https://s1.postimg.cc/5uowu6hr23/Kwan_manglets.jpg) (https://postimg.cc/image/5uowu6hr23/)

My manglets on my Kwan (Burmese) are deformed - not sure why. They made it through the winter ok but now as if stung by fruit fly?

boron deficiency is known to cause mis-shapen fruits.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on October 26, 2017, 11:48:29 AM
Garden Gurus-- ?--I need help in ID whats going on with 2 Keitt and 1 VP tree I have- they seem to be putting out good new growth  but im concerned with these spots with halos on old growth--
(https://s1.postimg.cc/19bmptxbob/Untitled-1.jpg) (https://postimg.cc/image/19bmptxbob/)

(https://s1.postimg.cc/5hqtznmxbf/Untitled-2.jpg) (https://postimg.cc/image/5hqtznmxbf/)

(https://s1.postimg.cc/4wh6dcs9az/Untitled-3.jpg) (https://postimg.cc/image/4wh6dcs9az/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 26, 2017, 12:29:25 PM
Probably Mango Bacterial Black Spot

Spray with Copper and other anti-bacterials
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 26, 2017, 12:31:56 PM
GOZP, your picture of tender new growth probably shows Iron deficiency, and possibly the other deficiencies I already mentioned.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on October 26, 2017, 02:57:48 PM
Thanks Har--
whats the best way to treat Bacteria black spot--I have some -" Organocide Plant Doctor" systemic and also some CuPro 5000 61% copper- or is there something better
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitFreak on October 26, 2017, 04:41:24 PM
Probably Mango Bacterial Black Spot

Spray with Copper and other anti-bacterials

Does copper help with bacterial spot?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 27, 2017, 08:07:16 AM
Those products sound good.

These should reduce the spread of the infection, but aren't likely to kill what is already there.

If only a few leaves are affected, cut them off and put them in the city trash.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropheus76 on October 27, 2017, 08:35:48 AM
I will be getting deployed in the next few months for roughly 9 months including over the summer months(sadly I will miss any fruit next year). I have a neighbor who will be doing occasional walk throughs of the yard but no real work since he in his 70s. The very knowledgable guy I was going to have help just had another heart attack and his heart is only operating at 26% so he is out of the picture. The most I might be able to get out of him is some drenching and checking to see if whoever we get to mow didn't take out the sprinklers. The main trees I am concerned with are the mangos since they get most of the hate from pests out of all my trees followed by my citrus trees. My wife is useless in the yard and every biting insect out there makes a beeline for her and a mosquito bite on her last for a month so she isn't an option. So given that there will be minimum maintenance for my trees what can I do?

Any long term spinosad spray/drenching I can use? I only have 4 in ground mangos right now and 3 in large pots but they are in two different locations in the yard.

What suggestions? I figure anything good for mangos will probably apply to everything else.

Hoping to get a thick layer of pine bark nugget mulch around every tree in the yard before I leave to at least reduce weeds stress a bit. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on October 27, 2017, 12:57:31 PM
Those products sound good.

These should reduce the spread of the infection, but aren't likely to kill what is already there.

If only a few leaves are affected, cut them off and put them in the city trash.
Thanks Har!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gozp on November 01, 2017, 04:51:43 PM

(https://s1.postimg.cc/3grusqzekr/20171101_131848.jpg) (https://postimg.cc/image/3grusqzekr/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: marklee on November 01, 2017, 06:51:50 PM

(https://s1.postimg.cc/3grusqzekr/20171101_131848.jpg) (https://postimg.cc/image/3grusqzekr/)
Hmm, never seen those spots, I'm getting something similar on my starfruit growth.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gozp on November 01, 2017, 07:08:49 PM

(https://s1.postimg.cc/3grusqzekr/20171101_131848.jpg) (https://postimg.cc/image/3grusqzekr/)
Hmm, never seen those spots, I'm getting something similar on my starfruit growth.

This happened when i foliar feed at 12 in the morning 😂😂😂

Lesson learnt..

I jst sprayed copper fungi
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangomandan on November 02, 2017, 11:32:55 PM
I have a volunteer seedling tree that I have experimented on now and again.

It has looked terrible for a year or so, but my question is specifically about what appear to be scratch marks on the trunk, about 3 feet from the ground.
I would assume that it's some kind of physical damage, but don't know what would cause this.


(https://s1.postimg.cc/3d207v6e6j/sickly_seedling_trunk_Medium.jpg) (https://postimg.cc/image/3d207v6e6j/)

The foliage looks bad in more ways than I can count.


(https://s1.postimg.cc/3derm0zecb/Sickly_seedling_Medium.jpg) (https://postimg.cc/image/3derm0zecb/)

Can insects or disease cause the scratch marks?  Or should I assume that the neighborhood cats have settled on this tree as their scratching post?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 03, 2017, 07:41:31 AM
The trunk does look scratched by cats, etc.  If it seems to be on-going, applying stinky sprays to trunk and soil might stop it.  Spraying trunk with fungicides might give it a better chance to heal.

The leaves are deficient in pretty much everything, due to root starvation, from the downward movement of the sap through the phloem having been interrupted by the bark damage.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangomandan on November 05, 2017, 08:29:53 AM
Thanks, Har. I see some fresh scratches on an otherwise healthy tree, so time to take action.

Also, I enjoy learning a bit of the science involved, even if it doesn't stick in my brain.  :o


The trunk does look scratched by cats, etc.  If it seems to be on-going, applying stinky sprays to trunk and soil might stop it.  Spraying trunk with fungices might give it a better chance to heal.

The leaves are deficient in pretty much everything, due to root starvation, from the downward movement of the sap through the phloem having been interrupted by the bark damage.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pineislander on November 06, 2017, 07:40:46 PM
Out of 50 mango trees this one has me puzzled. The tree is Juliette, and when I pruned it a few weeks ago it showed some signs of the same problem. I pruned off almost all leaves and it is recurring on the first flush. There are signs on the bottom of the leaves. Adjacent trees do not have any major problems, but i see a few instances of this happening on a few branches of one or two of them, but other leaves on them look normal. This Juliette tree, however is pretty much covered. I also noticed that the pruned branch tips of this tree are bleeding sap more than the others, enough that honeybees are collecting it for some use.

(https://s1.postimg.cc/7q852hsfwb/DSC01184_1.jpg) (https://postimg.cc/image/7q852hsfwb/)

(https://s1.postimg.cc/5yrxlrit0r/DSC01182_1.jpg) (https://postimg.cc/image/5yrxlrit0r/)

(https://s1.postimg.cc/797m696fqj/DSC01183_1.jpg) (https://postimg.cc/image/797m696fqj/)

(https://s1.postimg.cc/1gffb4mhqj/DSC01185_1.jpg) (https://postimg.cc/image/1gffb4mhqj/)

(https://s1.postimg.cc/6zab5fy0d7/DSC01186_1.jpg) (https://postimg.cc/image/6zab5fy0d7/)

(https://s1.postimg.cc/5t3rb0ebqz/DSC01187_1.jpg) (https://postimg.cc/image/5t3rb0ebqz/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gozp on November 08, 2017, 11:21:38 PM
Lack of iron for new growth leaves?

(https://s1.postimg.cc/65bs49a323/20171108_201829.jpg) (https://postimg.cc/image/65bs49a323/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 10, 2017, 08:58:14 AM
The green spots on the new growth look like what often happens from nutritional sprays.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 10, 2017, 09:36:05 AM
PineIslander, does that 'Juliette' tree have any trunk damage on that side of the tree, such as an imbedded strap?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gozp on November 10, 2017, 10:45:01 AM
The green spots on the new growth look like what often happens from nutritional sprays.

These new leaves havent been sprayed.
I do wonder what this indicates.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gozp on November 15, 2017, 08:02:53 PM

(https://s18.postimg.cc/xwmou3jad/20171115_153419.jpg) (https://postimg.cc/image/xwmou3jad/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 15, 2017, 09:42:27 PM
Very curious!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: SoCal on November 16, 2017, 05:18:18 PM
(https://s18.postimg.cc/50eaphbhh/5851483_A-3_DDC-41_EA-_B9_E5-0_E34_DF41_F0_E1.jpg) (https://postimg.cc/image/50eaphbhh/)
Lemon zest

(https://s18.postimg.cc/ivcl7e0lh/59221721-535_D-4_D21-8012-_FAEA8_FF850_CB.jpg) (https://postimg.cc/image/ivcl7e0lh/)
Maha Chanok

(https://s18.postimg.cc/d76agijed/5_CB4_B43_F-_DBEC-46_BF-_A257-_B5_BA9_B69290_A.jpg) (https://postimg.cc/image/d76agijed/)

(https://s18.postimg.cc/sema1f8ud/9_C7_A79_A9-0601-4_AEA-_ADD1-_DA9587_F3_E2_AD.jpg) (https://postimg.cc/image/sema1f8ud/)

(https://s18.postimg.cc/m0x6y6bo5/C868_A614-0_F55-4859-_B623-96_B0_AF0_A73_BB.jpg) (https://postimg.cc/image/m0x6y6bo5/)

(https://s18.postimg.cc/e9ggz2hn9/F8_E37282-_B651-4328-_B632-_FC2_D36764_C18.jpg) (https://postimg.cc/image/e9ggz2hn9/)

Pictured are 2 of my mangoes: Lemon zest in the ground and Maha in a 20g pot.
LZ didn’t fruit this year and half of the new flushes don’t look healthy. The MC fruited but looks like it’s deficient on something. You guys have any ideas on what’s going on? Thanks.

-Allan
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 16, 2017, 06:29:36 PM
When the soil gets too dry, even for just one day, the hair roots die--- so very little of any of the micro-nutrients get absorbed--- until new hair roots grow.

Avoid any fertilizers that just have NPK.

I see severe Iron deficiency, Manganese and Zinc deficiencies, and probably Copper and Boron deficiencies.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: SoCal on November 16, 2017, 08:07:23 PM
When the soil gets too dry, even for just one day, the hair roots die--- so very little of any of the micro-nutrients get absorbed--- until new hair roots grow.

Avoid any fertilizers that just have NPK.

I see severe Iron deficiency, Manganese and Zinc deficiencies, and probably Copper and Boron deficiencies.
Thank you, any product recommendations?

-Allan
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FamilyJ on November 26, 2017, 08:13:51 AM
I currently use liquid copper fungicide ever month from the Home Depot, then from lowes i use Bayer advanced Fruit citrus & vegetable insect control every 6 months and Mango's haven't had a problem but that Citrus greening killed all citrus trees. To me it is easier to maintain Vs. fix the issue
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jose Spain on November 26, 2017, 01:00:14 PM
Here I come with a strange (to me) case. Few months ago when I planted this Nam Doc Mai in soil, I discovered that ants and scale insects were coming into the very recent graft (a cleft graft). So I decided to cover the whole graft with this "healing paste" (I'm not sure how you calling it in English). Problem with insects ended there obviously, but this week I found that section swollen, so I took off the paste. This is what I found:

(https://s2.postimg.cc/bo1jhguwl/detalle.jpg) (https://postimg.cc/image/bo1jhguwl/)



(https://s2.postimg.cc/5zv8qllf9/20171125_140858.jpg) (https://postimg.cc/image/5zv8qllf9/)

Any idea why this happened? Should I worry?

Thanks,


Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 07, 2018, 07:20:53 PM
Definitely odd looking
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 07, 2018, 07:22:36 PM
I'm noticing mango problems being posted in new threads everywhere, instead of in this dedicated thread.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on January 07, 2018, 09:21:17 PM
Here's a problem I encountered with a couple of mango trees purchased last April, the coveted Maha Chanok and Coconut Cream. I noticed amber sap coming out of them and the bark was splitting and almost flaking off. The trunk underneath the bark was dark, and the trees just kept looking worse and worse. I sawed and chopped into them and got this.

What caused it and is there any saving such a tree? Are there any recommended steps to preventing this from getting to my other mangoes? Everything is currently in pots until I am able to plant in the spring. Thanks!

(https://s10.postimg.cc/qeel8dhs5/MC_rot.jpg) (https://postimg.cc/image/qeel8dhs5/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 08, 2018, 09:10:07 PM
When potted plants tip over, the trunks can be severely sunburned, killing the bark and cambium layer and underlying wood, all along one side.  Several months can go by before the dead tissue dries out and is noticed.

Another possibility is a systemic bacterial infection, such as Southern Bacterial Wilt, coming up from the soil, through the "veins."
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gozp on January 08, 2018, 11:26:16 PM
What r ur thoughts?

(https://s17.postimg.cc/b5hup7rjf/20171223_161154.jpg) (https://postimg.cc/image/b5hup7rjf/)

(https://s17.postimg.cc/6jlqgyt6j/20180103_202106.jpg) (https://postimg.cc/image/6jlqgyt6j/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 09, 2018, 08:23:05 PM
Painting the trunk with tar or glue or vaseline or Tanglefoot, et cetera, kills the bark and cambium layer.  Then the roots starve.  Then the top of the tree dies too.

To make a barrier against ants, etc., you must first wrap the trunk with some protective wrap that will not allow any of the above products to touch the trunk.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on January 09, 2018, 09:26:04 PM
Wow, this thread is a gold mine! Thanks, Har, for your valuable advice here!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on January 09, 2018, 09:45:14 PM
Yes good advice,  thanks Har
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on January 09, 2018, 10:01:06 PM
Yes indeed, thanks, Har!

You wrote:
'Another possibility is a systemic bacterial infection, such as Southern Bacterial Wilt, coming up from the soil, through the "veins."'

Is there treatment for that (SBW)? Any preventative measures I should take?

Should I put the soil from those affected trees in the trash? Reusing the soil would put other plants at risk, right?

Thanks again!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gozp on January 10, 2018, 11:43:46 AM
Painting the trunk with tar or glue or vaseline or Tanglefoot, et cetera, kills the bark and cambium layer.  Then the roots starve.  Then the top of the tree dies too.

To make a barrier against ants, etc., you must first wrap the trunk with some protective wrap that will not allow any of the above products to touch the trunk.

So how do u brush out the pruning sealer besides removing with a knife? Any solutions  to remove?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 10, 2018, 10:02:11 PM
I don't use pruning sealer.

I suppose that pruning sealer is usually appled just to the wood of wide cuts, that is expected to die anyway, and not onto much live bark, and certainly not all the way around the trunk--- so that any injury is local, and not girdling, not tree killing.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: strkpr00 on January 26, 2018, 01:01:56 PM
I think the interior damage might of been from a recent hurricane. Todays high winds in Broward broke it off. Should I cut the the other half now or wait till after it fruits? It is a Hatcher and about 8 years old.
(https://s13.postimg.cc/x7j3x2okz/20180126_124140.jpg) (https://postimg.cc/image/x7j3x2okz/)

(https://s13.postimg.cc/ef78tin1v/20180126_123328.jpg) (https://postimg.cc/image/ef78tin1v/)

(https://s13.postimg.cc/7q0pcz6pf/20180126_123337.jpg) (https://postimg.cc/image/7q0pcz6pf/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on January 26, 2018, 09:40:49 PM
I would definitely wait until post harvest. At that point, you have two options:

 - You could leave it. It's not ideal, but the wound will heal over in a year or two. The tree will form a barrier around the dead portion internally, but it wouldn't impact tree health. Personally, I would probably leave it unless cutting it would not leave the canopy ugly or significantly imbalanced.

 - If you decide to cut it, you would take it back to the crotch where the branch attaches to the trunk

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: BahamaDan on January 26, 2018, 10:51:47 PM
Good day, adding this post to this thread instead of creating a new one since my query seems to fall under the heading. I did some grafts of mature mango scions onto a seedling mango a week or two ago since it's a couple years old but has never flowered, and I was checking them a couple days ago. The ones I have checked so far haven't taken, but more importantly I noticed what appears to be some sort of dieback on the leaves. It's affecting a fairly significant number of leaves too, has anyone had anything that looked like this?

(https://s13.postimg.cc/6s7rr7o7n/photo_2018-01-26_22-39-28.jpg) (https://postimg.cc/image/6s7rr7o7n/)

I should mention that the dieback has been there for a while probably, I just never actually looked at the leaves specifically so it didn't come to mind. The leaf parts that haven't died still seem healthy, so not sure what's causing the partial dieback. No sooty mold or other fungal problems on the tree that I'm aware of, although there's an older established fruiting mango about 15-20 feet away that doesn't have the leaf partial dieback issue but does have some sooty mold on a couple lower branches. That one seems to be growing fine overall though and is presently flowering.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: strkpr00 on January 27, 2018, 10:19:58 AM
i cut the fallen branch side to see how far it traveled and the dead wood was minimal. I will leave it till post fruiting for the big trim and canopy reduction as it getting large.

I would definitely wait until post harvest. At that point, you have two options:

 - You could leave it. It's not ideal, but the wound will heal over in a year or two. The tree will form a barrier around the dead portion internally, but it wouldn't impact tree health. Personally, I would probably leave it unless cutting it would not leave the canopy ugly or significantly imbalanced.

 - If you decide to cut it, you would take it back to the crotch where the branch attaches to the trunk
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: strkpr00 on January 27, 2018, 10:42:49 AM
Not too deep.

(https://s13.postimg.cc/qg2so14eb/20180127_103405.jpg) (https://postimg.cc/image/qg2so14eb/)

(https://s13.postimg.cc/veqb2las3/20180127_103315.jpg) (https://postimg.cc/image/veqb2las3/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on January 27, 2018, 12:23:17 PM
Yep. If you leave that branch to heal over and come back in 5 years and cut it open, you'll see a dark colored core in the center of the branch, perhaps 1/2 inch in diameter. This is how trees protect themselves, by walling off the section that is at risk for infection. But for all practical purposes, it won't harm the tree's health.

Not too deep.

(https://s13.postimg.cc/qg2so14eb/20180127_103405.jpg) (https://postimg.cc/image/qg2so14eb/)

(https://s13.postimg.cc/veqb2las3/20180127_103315.jpg) (https://postimg.cc/image/veqb2las3/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 27, 2018, 03:31:58 PM
BahamaDan, I see very green grass under the tree, right up to the trunk!

Check for WeedEater damge to the trunk.
Check to see if this small tree is a dog's habitual place to pee.
Check for high-nitrogen fertilizer's having been applied to the grass.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: BahamaDan on January 29, 2018, 05:10:46 AM
BahamaDan, I see very green grass under the tree, right up to the trunk!

Check for WeedEater damge to the trunk.
Check to see if this small tree is a dog's habitual place to pee.
Check for high-nitrogen fertilizer's having been applied to the grass.

Guanabanus, you're right about the grass. I thought it was clover so I left it but upon recent examination it appears to actually be Oxalis.

We don't own any weedeaters, we just mow around the perimeter of the trunk.
We have no dogs either, we do have an outside cat though.
We also don't apply any fertilizer to our plants (bad I know lol).
Any other possible explanations for the partial dieback?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on January 29, 2018, 02:44:04 PM
Established Cogshall, with what I assume is a bad fungal problem.  I've sprayed the tree twice in the past two weeks with Southern Ag Liquid Copper Fungicide, using the recommended dosage of 4 teaspoons/gal.  The tree is also starting to send up pannicles.  The photos are about a week after the second treatment.  I'm not seeing much improvement.
A Pickering, not too far removed from the Cogshall, has no fungus.
What am I looking at and how best to eradicate it?

(https://s13.postimg.cc/ltko96xg3/20180129_135657_1.jpg) (https://postimg.cc/image/ltko96xg3/)

(https://s13.postimg.cc/4gaduazk3/20180129_135646.jpg) (https://postimg.cc/image/4gaduazk3/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: strkpr00 on January 30, 2018, 06:40:47 PM
Once the fungus situation is resolved I think you have to wait for a new flush of leaves as the damage is done and a leaf cannot repair itself.
It sure works that way with orchids.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 30, 2018, 10:12:51 PM
Deficiency of Boron is a common cause of dieback.  Other deficiencies can also contribute to dieback.  So can diseases.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mango Stein on February 01, 2018, 04:08:58 AM
Mango splitting problem is continuing for me. I'm fairly sure watering is not the issue. I've noticed that the panicle is turning black (necrotizing?) from the fruit upwards. It must be connected to the problem somehow.
(https://s18.postimg.cc/pz1yx4qcl/mango_splitting.jpg) (https://postimg.cc/image/pz1yx4qcl/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 01, 2018, 09:10:59 AM
That is an extremely thin mango trunk.  The composter right next to it is probably providing too much Nitrogen.

Have you tested the soil?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on February 01, 2018, 10:41:34 AM
It's hard to see in the photo, but that long stem is not the trunk. It's an ultra-long stem that is holding a mango :-).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 02, 2018, 03:17:33 AM
sho nuf
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: johnb51 on February 02, 2018, 08:42:51 AM
OK, please explain MBBS and "the rot," and how it's going to affect mango growing in South Florida going forward.  Are we going to lose mangos like we lost citrus???
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on February 02, 2018, 11:06:44 AM
I doubt it. It will probably just be another pest that growers will have to deal with -- using bactericides, environmental modifications, cultivar selection, etc.

OK, please explain MBBS and "the rot," and how it's going to affect mango growing in South Florida going forward.  Are we going to lose mangos like we lost citrus???
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: PltdWorld on February 02, 2018, 12:05:47 PM
I've read through this thread and haven't seen anything that fits... so, here goes... my Haden has been in the ground for approx 10 years and has struggled the whole time.  It's starting to look decent, so I was planning on taking some scions and grafting to my Manila.   When clipping leaves, I found this...


(https://s18.postimg.cc/9vzlroyxh/IMG_4217.jpg) (https://postimg.cc/image/9vzlroyxh/)

(https://s18.postimg.cc/8tpf95ntx/IMG_4218.jpg) (https://postimg.cc/image/8tpf95ntx/)

They look like legless/headless ticks (same size and color).  They have a hard shell with yellow/orange contents.  Any idea what this is?  How harmful is it to the tree?

Thanks
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Dangermouse01 on February 02, 2018, 01:25:44 PM
I've read through this thread and haven't seen anything that fits... so, here goes... my Haden has been in the ground for approx 10 years and has struggled the whole time.  It's starting to look decent, so I was planning on taking some scions and grafting to my Manila.   When clipping leaves, I found this...


(https://s18.postimg.cc/9vzlroyxh/IMG_4217.jpg) (https://postimg.cc/image/9vzlroyxh/)

(https://s18.postimg.cc/8tpf95ntx/IMG_4218.jpg) (https://postimg.cc/image/8tpf95ntx/)

They look like legless/headless ticks (same size and color).  They have a hard shell with yellow/orange contents.  Any idea what this is?  How harmful is it to the tree?

Thanks

Looks like katydid eggs.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: PltdWorld on February 02, 2018, 01:41:19 PM
Looks like katydid eggs.

Thanks!  Surprised this is the first time I've seen their eggs - we have lots of grasshoppers.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gozp on February 09, 2018, 03:59:33 PM
I wonder what killed my corriente seedling?

I uploaded a photo of the main trunk and its drying up


(https://s17.postimg.cc/5sfvi6eez/20180209_121250.jpg) (https://postimg.cc/image/5sfvi6eez/)

(https://s17.postimg.cc/w0r07jj2z/20180209_121255.jpg) (https://postimg.cc/image/w0r07jj2z/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 10, 2018, 12:37:49 PM
Have you tried scratching the trunk, to see if there is green right under the papery outer bark?

Sometimes, freeze damage is only a few inches above the ground.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gozp on February 10, 2018, 09:47:05 PM
Have you tried scratching the trunk, to see if there is green right under the papery outer bark?

Sometimes, freeze damage is only a few inches above the ground.

the bottom trunk is all green, however an estimate of a inch is dried up...

The rest of my my mangoes are fine.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitFreak on February 16, 2018, 11:31:25 AM
While pruning my Angie tree I noticed numerous areas with decay.  Upon further inspection it appears the tree has been suffering and is on the decline.  When I cleaned off the affected areas ants came pouring out (never good).  It looks like every joint has some sort of splitting or decay.  The sad thing is the new growths and foliage looks perfectly healthy but I know inside the tree is dead/dying.  My thought is to wait until the next flush and top the tree below the bottom branch and start from scratch (if the disease isn't terminal).  In the meantime I will completely soak the rootball in case there are any airpockets in the soil.  The tree had been potted for a long time and almost died from a drought.

Please let me know if you think this is a good approach or if I should just top it now and roll the dice...?  Either way im thinking it has to be topped considering the amount of already dead material inside the tree but maybe im wrong.

(https://s17.postimg.cc/5eo8gthwb/IMG_5150.jpg) (https://postimg.cc/image/5eo8gthwb/)

(https://s17.postimg.cc/jl3zc20h7/IMG_5152.jpg) (https://postimg.cc/image/jl3zc20h7/)

(https://s17.postimg.cc/mf74pixij/IMG_5153.jpg) (https://postimg.cc/image/mf74pixij/)

(https://s17.postimg.cc/9nsyj0vgb/IMG_5156.jpg) (https://postimg.cc/image/9nsyj0vgb/)

(https://s17.postimg.cc/6tpt5k64r/IMG_5157.jpg) (https://postimg.cc/image/6tpt5k64r/)

(https://s17.postimg.cc/nu8pe9e17/IMG_5158.jpg) (https://postimg.cc/image/nu8pe9e17/)

(https://s17.postimg.cc/6gyezeqfv/IMG_5159.jpg) (https://postimg.cc/image/6gyezeqfv/)

(https://s17.postimg.cc/9nsyj00l7/IMG_5160.jpg) (https://postimg.cc/image/9nsyj00l7/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 16, 2018, 02:42:23 PM
Was mulch mounded up the trunk for protection during a cold spell?  Long-term, that could kill the tree.

Drenching with Alliette or Flanker, or with Plant Doctor or similar, would probably help a lot.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitFreak on February 16, 2018, 04:22:16 PM
Was mulch mounded up the trunk for protection during a cold spell?  Long-term, that could kill the tree.

Drenching with Alliette or Flanker, or with Plant Doctor or similar, would probably help a lot.

Are those certified organic?  In your opinion with all the internal dead areas, does it make sense just to sever and drench with something?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitFreak on February 16, 2018, 08:45:59 PM
Was mulch mounded up the trunk for protection during a cold spell?  Long-term, that could kill the tree.

Drenching with Alliette or Flanker, or with Plant Doctor or similar, would probably help a lot.

To answer you question Har, No, no mulch was mounded.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 16, 2018, 09:06:14 PM
I can see mulch touching the trunk.  Mulch touching trunks, often, during rainy weather or trunk-wetting irrigation, encourages trunk circling roots, and sometimes infections in the bark.

The products I mentioned are not "organic."  If your tree is not going to be productive because it is dying, certification for organic production is mute.  If you save the tree, the contamination will be broken down or diluted greatly by the time the tree does produce, 2-3 years later.  And if the tree was produced by any of the major mango tree production nurseries, it wasn't organicaly produced.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on February 18, 2018, 11:48:47 AM
I've got a young Carie  3 years old in ground from a 3 gallon pot that have dropped most of the fruit only about 5 left, after a full bloom , it had a good initial fruit set and got the size of peas to marbles size. It's getting watered 2x a week.I hit it with Cu-Pro 500 (62% copper) just as the first flowers starting coming out about a month ago.
Same thing on a Val-Carie.
I'm worried  now about my NM and Keitt trees..as there loaded with pea size fruit now...what to do to prevent more  loss..
(https://s17.postimg.cc/4e35j31vv/20180218_110644.jpg) (https://postimg.cc/image/4e35j31vv/)

(https://s17.postimg.cc/i7ri85x23/20180218_110801.jpg) (https://postimg.cc/image/i7ri85x23/)

(https://s17.postimg.cc/oy7zhr4u3/20180218_110730.jpg) (https://postimg.cc/image/oy7zhr4u3/)

(https://s17.postimg.cc/ilsu7fh23/20180216_180130.jpg) (https://postimg.cc/image/ilsu7fh23/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: zands on February 18, 2018, 12:07:19 PM
I've got a young Carie  3 years old in ground from a 3 gallon pot that have dropped most of the fruit only about 5 left, after a full bloom , it had a good initial fruit set and got the size of peas to marbles size. It's getting watered 2x a week.I hit it with Cu-Pro 500 (62% copper) just as the first flowers starting coming out about a month ago.
Same thing on a Val-Carie.
I'm worried  now about my NM and Keitt trees..as there loaded with pea size fruit now...what to do to prevent more  loss..

#1 - Carrie fruit is delicious as any new Zill for me. So it was worth waiting for my Carrie tree to get older
#2 - Planted from a 3 gallon pot- My Carrie tree's first years were disappointing. I had profuse blooms and bb size fruits that never went anywhere.
#3-  In year five my Carrie tree took off as far as production and has been a good producer since then.

So you might have to wait until year five. Meanwhile you can buy Carrie fruits at Excalibur or Tropical Acres that will remind you that Carrie is worth waiting for.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 18, 2018, 12:22:58 PM
It is good that you keep the soil moist when pea-sized fruits are on.

Boron-deficiency is also a cause of recent fruit-sets dropping.  Be careful to not over-do it when correcting.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on February 19, 2018, 04:32:47 AM
Thanks Zands and Har that helps alot, I appreciate it
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on February 19, 2018, 12:43:55 PM
There is another thread here that discusses carrie's tendency to have poor fruit set when young. My tree took 6 to 8 years before it really started to produce strong crops on a consistent basis.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on February 21, 2018, 05:59:59 PM
Thanks Jeff, I've grown a few Carries but that was 15 years ago at my last place, and my memory is not what it used to be.....so I'm going to wait on them and see how it goes
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on February 22, 2018, 09:22:18 AM
The products I mentioned are not "organic."  If your tree is not going to be productive because it is dying, certification for organic production is mute.

Great point Har.  Sometimes our aspirations take over common botanical sense resulting in financial losses.  It doesn't have to be.

Marley, do and use whatever you can to save the tree....and keep it to yourself.   ;)  You could be applying Magnabon CS2005 both as a foliar spray and soil drench.  Like I said before it is OMRI certified organic FWIW.

Case in point.  You know I got hit with 18F.  Well guess what, my Reed avocado (a frost IN-tolerant pure Guatemelan race) is pushing green foliage all over the place.  All my citrus is green and everyone who grows citrus knows key lime is not hardy.  Not only is the key lime tree alive but the grafts (tall branches now) of orange, persian lime and lemon on it are alive.  Why?  I think in part because I staved off root and other tissue rot thanks to a foliar spray of copper 2 days before the freeze hit and then 2 days after the freeze I applied a strong soil drench of copper, this time Phyton 35, same copper chemisty.  I'll worry about the small stuff like soil microbial health later.  Right now my focus is on saving my stock at ANY cost.

Yes, get the mulch off the tree.  That trunks needs air circulation.

Good luck amigo!

Mark
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on February 22, 2018, 09:25:08 AM
Boron-deficiency is also a cause of recent fruit-sets dropping.  Be careful to not over-do it when correcting.

Yep, and too often over looked.  I apply Solubor to all my fruiting greenhouse trees especially avocados and to my vinifera vineyard.  Easy does it as too much and it's toxic.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 22, 2018, 03:38:19 PM
quotes from Mark in Texas:
I staved off root and other tissue rot thanks to a foliar spray of copper 2 days before the tree hit and then 2 days after the freeze I applied a strong soil drench of copper, this time Phyton 35, same copper chemisty.  I'll worry about the small stuff like soil microbial health later.  Right now my focus is on saving my stock at ANY cost.

You could be applying Magnabon CS2005 both as a foliar spray and soil drench.  Like I said before it is OMRI certified organic FWIW.

I am very interested to know what rate of either product per gallon of water; and how many square feet of ground covered by each gallon of mix, for drenching mangos.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on February 22, 2018, 05:17:38 PM
I am very interested to know what rate of either product per gallon of water; and how many square feet of ground covered by each gallon of mix, for drenching mangos.

Have to check my greenhouse journal for the soil drench amount.  For foliar 1.5 - 2 tsp. per gallon of either product works.  Phyton is kinda syrupy suggesting it has a surfactant.  I add about 1 tsp. and no more of a non-ionic surfactant to Magnabon CS2005.   Pots are 55 gal., about 33" diameter, bottomless so the trees root into native soil.  Labels have rates for all kinds of apps.

BTW, I really screwed up on my first application with this chemistry by miss reading the Phyton label and applied 10X the recommended rate.  Was shocked to find minor leaf burn on the avocados and that was mainly to younger tender foliage.  Both companies have excellent tech help.   Recommend a talk with Frank Miele at Phyton.  Tell him I sent you.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 22, 2018, 10:54:42 PM
Thank you, sir.

The only drench rate I found when I re-read the CS2005 label was for apple. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on February 23, 2018, 08:56:56 AM
Thank you, sir.

The only drench rate I found when I re-read the CS2005 label was for apple.

Most welcome.  Magnabon is labeled for spraying mangos as well as most of our tropical fruits. http://www.magnabon.com/userfiles/file/cs2005label.pdf (http://www.magnabon.com/userfiles/file/cs2005label.pdf)

Page 5 has soil drench rates but not for fruits.  I'd talk to one of their techs if I were you.  I also noted that cuttings can be sprayed and dipped which is what I'll do with the cherimoya cuttings.  https://phytoncorp.com/wp-content/downloads/phyton35specimen.pdf (https://phytoncorp.com/wp-content/downloads/phyton35specimen.pdf)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Empoweredandfree on February 25, 2018, 03:36:03 PM
My new mango I had shipped has a dark brown portion on the main stem while the rest remains lime green. Anything to be concerned about?
(https://s13.postimg.cc/5opq0b9j7/IMG_1074.jpg) (https://postimg.cc/image/5opq0b9j7/)

(https://s13.postimg.cc/8isvdrjf7/IMG_1075.jpg) (https://postimg.cc/image/8isvdrjf7/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 25, 2018, 03:38:33 PM
Too blurry.   Please also show the lower portion of the trunk.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on February 26, 2018, 08:44:42 AM
My new mango I had shipped has a dark brown portion on the main stem while the rest remains lime green. Anything to be concerned about?
(https://s13.postimg.cc/5opq0b9j7/IMG_1074.jpg) (https://postimg.cc/image/5opq0b9j7/)

(https://s13.postimg.cc/8isvdrjf7/IMG_1075.jpg) (https://postimg.cc/image/8isvdrjf7/)

Looks like phomopsis and yes, could be a big problem is it spreads.  You could spray it with a broad spectrum fungicide and/or cut below the damage.  If it's mechanical damage due to shipping don't worry about it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pineislander on March 01, 2018, 06:13:00 PM
Out of 50 mango trees this one has me puzzled. The tree is Juliette, and when I pruned it a few weeks ago it showed some signs of the same problem. I pruned off almost all leaves and it is recurring on the first flush. There are signs on the bottom of the leaves. Adjacent trees do not have any major problems, but i see a few instances of this happening on a few branches of one or two of them, but other leaves on them look normal. This Juliette tree, however is pretty much covered. I also noticed that the pruned branch tips of this tree are bleeding sap more than the others, enough that honeybees are collecting it for some use.

(https://s1.postimg.cc/7q852hsfwb/DSC01184_1.jpg) (https://postimg.cc/image/7q852hsfwb/)

(https://s1.postimg.cc/5yrxlrit0r/DSC01182_1.jpg) (https://postimg.cc/image/5yrxlrit0r/)

(https://s1.postimg.cc/797m696fqj/DSC01183_1.jpg) (https://postimg.cc/image/797m696fqj/)

(https://s1.postimg.cc/1gffb4mhqj/DSC01185_1.jpg) (https://postimg.cc/image/1gffb4mhqj/)

(https://s1.postimg.cc/6zab5fy0d7/DSC01186_1.jpg) (https://postimg.cc/image/6zab5fy0d7/)

(https://s1.postimg.cc/5t3rb0ebqz/DSC01187_1.jpg) (https://postimg.cc/image/5t3rb0ebqz/)
I'm happy to show you that at this point the tree has flushed strongly with no signs of the previous problem. Since I posted the original pictures I did a foliar spray with fish emulsion and one application of a broad spectrum micronutrient (Diamond R Ultra-Rx) and apply gypsum. Will see how it goes through the summer but is looking very good now.

(https://s17.postimg.cc/os410fo23/DSC01257.jpg) (https://postimg.cc/image/os410fo23/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on March 01, 2018, 06:21:32 PM
Thank you, sir.

The only drench rate I found when I re-read the CS2005 label was for apple.

Sorry it took so long Har but on the soil drench I used 9 oz./32 gals. water which is the same rate as foliar spray 1.5 tsp to 2 tsp. per gallon.  Magnabon or Phyton, same chemistry, same AI (active ingredient).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 02, 2018, 07:47:56 AM
Thank you.  I'll try to get permission to do that on several trees.  I don't have mango trees myself.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on March 02, 2018, 08:32:44 AM
Thank you.  I'll try to get permission to do that on several trees.  I don't have mango trees myself.

Welcome and good luck.

Just a note about cold hardiness.  Texas has 1,000's of fruit growers, many are growing citrus and mango outdoors and what always nails us is the sudden and wide swings in temps during the winter which is typical of Texas weather.  We could be having 78F one day, have an Arctic front blow thru and by morning have 24F.  The tree hasn't had time to shut down, to acclimate.

Which brings me to my next point of why maybe some of my very frost intolerant trees like my key lime, Lemon Zest, Reed and Gwen avocados made it, are starting to push.  For days our outside ambient temps were in the 20's. The day of the big 18F my greenhouse temps were around 35-37F being the heater's day setpoint is 35F.  This acclimated the trees such that the short hit they took at 18F didn't nail all of them!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Empoweredandfree on March 05, 2018, 07:58:55 PM
My new mango I had shipped has a dark brown portion on the main stem while the rest remains lime green. Anything to be concerned about?
(https://s13.postimg.cc/5opq0b9j7/IMG_1074.jpg) (https://postimg.cc/image/5opq0b9j7/)

(https://s13.postimg.cc/8isvdrjf7/IMG_1075.jpg) (https://postimg.cc/image/8isvdrjf7/)

Looks like phomopsis and yes, could be a big problem is it spreads.  You could spray it with a broad spectrum fungicide and/or cut below the damage.  If it's mechanical damage due to shipping don't worry about it.

Thanks Mark.....I gave it a copper spray for now, doesn't appear to have gotten worse. Everything I ordered from this place came looking like sh*t.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on March 06, 2018, 08:14:07 AM
Everything I ordered from this place came looking like sh*t.

And who would that be?  I need to start all over.  Guess I've been in a state of denial, hoping for a miracle, but yesterday I confirmed all my mango trees are toast.

I've had great luck with Pine Island nursery stock.  My intent is to stub whatever I buy above the first node and graft to the shoots that arise.  Did that last year and had a beautiful cocktail tree of 4 Zill varieties on 8 branches.   

(https://s10.postimg.cc/a1w8byjg5/Cocktail_Mango_Oct25.jpg) (https://postimg.cc/image/a1w8byjg5/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: WGphil on March 06, 2018, 10:19:32 AM
That’s how I lost my Sunburst tangerine grove. 

High temps for weeks and then 22 for mid day temps and then back to warm again. All tangerines and their Orlando Tangelo pollinators a total loss. 

8o’s had more freezes than usual. 



Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Empoweredandfree on March 06, 2018, 05:27:18 PM
Everything I ordered from this place came looking like sh*t.

And who would that be?  I need to start all over.  Guess I've been in a state of denial, hoping for a miracle, but yesterday I confirmed all my mango trees are toast.

I've had great luck with Pine Island nursery stock.  My intent is to stub whatever I buy above the first node and graft to the shoots that arise.  Did that last year and had a beautiful cocktail tree of 4 Zill varieties on 8 branches.   

(https://s10.postimg.cc/a1w8byjg5/Cocktail_Mango_Oct25.jpg) (https://postimg.cc/image/a1w8byjg5/)

 My local nursery gets stuff from Pine Island and it usually always looks great (except Lychees). PlantOgram always sends awesome trees too. I won't publicly hurt someones business but I'll PM you the name.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on March 07, 2018, 07:46:36 AM
My local nursery gets stuff from Pine Island and it usually always looks great (except Lychees). PlantOgram always sends awesome trees too. I won't publicly hurt someones business but I'll PM you the name.

You're not hurting Top Tropicals, they are doing it to themselves.  There has been plenty of complaints about those bunch of garden carnies.  They sold me a crap Nishikawa avocado and didn't make good on it.  And the way they misrepresent their stock, mis-label, I doubt if I even received the variety I ordered!

https://davesgarden.com/products/gwd/c/2785/0/

There is no excuse for this.  Growquest was another shyster.  Think they finally put him (Chris) in jail where he belongs.   Word is he's busy watering the warden's daisies..... always maintaining an upright position.  ;D

84 positives
12 neutrals
44 negatives
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Empoweredandfree on March 07, 2018, 03:44:50 PM
My local nursery gets stuff from Pine Island and it usually always looks great (except Lychees). PlantOgram always sends awesome trees too. I won't publicly hurt someones business but I'll PM you the name.

You're not hurting Top Tropicals, they are doing it to themselves.  There has been plenty of complaints about those bunch of garden carnies.  They sold me a crap Nishikawa avocado and didn't make good on it.  And the way they misrepresent their stock, mis-label, I doubt if I even received the variety I ordered!

https://davesgarden.com/products/gwd/c/2785/0/


 A lot of scammers in Florida on e-bay too.

Mark, how do you like the air pots?

There is no excuse for this.  Growquest was another shyster.  Think they finally put him (Chris) in jail where he belongs.   Word is he's busy watering the warden's daisies..... always maintaining an upright position.  ;D

84 positives
12 neutrals
44 negatives
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on March 08, 2018, 09:20:37 AM
Been using root pruning products for many years.  Depends on my plans.  Today I'll be expanding some (adding panels) in the greenhouse and adding a couple of new 55 gal. ones using a new roll of RootBuilder I got in.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Empoweredandfree on March 08, 2018, 06:34:37 PM
Been using root pruning products for many years.  Depends on my plans.  Today I'll be expanding some (adding panels) in the greenhouse and adding a couple of new 55 gal. ones using a new roll of RootBuilder I got in.

 I just invested in some "air" pots this year. I like the look of them as opposed to the fabric pots that don't like all that much for various reasons.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pineislander on March 10, 2018, 08:48:48 PM
Har, on another thread you mentioned using calcium, silicon, and copper. I'm amending with gypsum, and not just for mangoes, on my whole property. I'm using a good micronutrient supplement in soil and foliar to cover copper.

I've been looking at fertilizing with silicon. Most are silicic acid or potassium silicates. There could be others I don't know about. I have spread bamboo stalk & leaf mulch and know that grass and rice hulls contain lots of silicon but don't have a ready source yet for those.
I am looking at crab shell byproducts. I'd love to hear about your experience using silicon fertilizers.

Can you please expound on silicon's role in mangoes, and how to use it to improve disease resistance, our productivity and crop quality?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on March 11, 2018, 08:29:44 AM
Here's another one for you Har...
I've got 2 Keitt trees 20 feet apart. that are 3 years old from a 15 gallon
And are loaded with fruit, some of the fruit looks like this
I've been hitting it with 62% copper and Plant Doctor
Should I pick all these off and throw in trash?
Btw..I look forward to your talk next month at the RFC

(https://s18.postimg.cc/8u9i4rl1x/20180311_081628.jpg) (https://postimg.cc/image/8u9i4rl1x/)

(https://s18.postimg.cc/rmld8dzgl/20180311_081431.jpg) (https://postimg.cc/image/rmld8dzgl/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on March 11, 2018, 08:38:42 AM
A few weeks ago I made a post about my Carrie tree dropping all its fruit ..and Har mentioned a lack of Boron could be the cause...so I sprayed the tree with Boron the next day..and copper 2xs since then as luck would have the whole bloomed again and this time looks like a great crop staying on the tree so far over 100 the size of marbles. ....you can see 4 that held from the first bloom..thanks Har and everyone eles for the good advice
(https://s18.postimg.cc/wmneu4rx1/20180311_081735.jpg) (https://postimg.cc/image/wmneu4rx1/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on March 11, 2018, 09:18:51 AM
Can you please expound on silicon's role in mangoes, and how to use it to improve disease resistance, our productivity and crop quality?

Silicon would be considered one of those beneficial rather than essential elements.  Works on some crops, but not on most.  I bought Dyna-Gro's Pro-tek but see no real world value on the crops I've sprayed with when it comes to disease pressures.

You know I sing the praises of Keyplex 350DP.  Here's a good read:

Zinc and silicon help increase the effectiveness of mechanical barriers, making it difficult for sucking insects to penetrate the outer walls; this in turn minimizes the spread of disease. Copper is an important catalyst for the chemical reactions that take place within plant cells and it can neutralize the damaging effects of oxygen radicals and hydrogen peroxide to healthy plant tissue.

https://www.keyplex.com/knowledge-base/pest-management/the-role-of-plant-nutrition-in-plant-resistance/ (https://www.keyplex.com/knowledge-base/pest-management/the-role-of-plant-nutrition-in-plant-resistance/)

If you're not careful and start believing everything you read, especially if it comes from a site or vendor who stands to profit from it, you become a bumbling idiot staring at labels, talking to the bottles.  I hate when that happens.  ;D

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on March 11, 2018, 10:09:14 AM
Here's another one for you Har...
I've got 2 Keitt trees 20 feet apart. that are 3 years old from a 15 gallon
And are loaded with fruit, some of the fruit looks like this
I've been hitting it with 62% copper and Plant Doctor
Should I pick all these off and throw in trash?
Btw..I look forward to your talk next month at the RFC

(https://s18.postimg.cc/8u9i4rl1x/20180311_081628.jpg) (https://postimg.cc/image/8u9i4rl1x/)

(https://s18.postimg.cc/rmld8dzgl/20180311_081431.jpg) (https://postimg.cc/image/rmld8dzgl/)

That’s scab. Same treatment as anthracnose, copper and something else. I don’t know if Plant Doctor will do much for it though.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 11, 2018, 02:34:39 PM
PineIslander,
another natural source of available Silicates is Australian Pine mulch.  The phytoliths of Silicates in the wood, along with a lot of resin, are what destroy lumber-mill saws, so operators don't want it.

Your sandy ground is mostly Silicates, un-available until in contact with acids, such as from decaying vegetation, or such as from acid-forming fertilizers, sulfates.

Despite lack of essentiality of Silicon for growing inside laboratories--- where there is no wind, growing Grass-Family crops in Silicon-deficient conditions is un-profitable.   Silicate fertilizers, or acid applications to soil can make a huge difference for Sugar-Cane and Rice, and other grains, and also in Cucurbits and Potatoes.  It can be a major nutrient--- a structural nutrient.

With broad-leaf trees, Silicon is apparently a micro-nutrient, or even a trace nutrient.  In most cases it has not been studied at all.

Potassium Silicate is not compatible with many (most?) other spray ingredients--- most certainly not compatible with any ingredients requiring a notably acidic mix.  In hindsight, it appears that many of my spray mixes were useless from the moment of mixing--- it is a clear substance, so my jar tests didn't always show a visible problem.

My attempts failed to show any benefit from using Dyna-Gro Pro-TeKt liquid fertilizer on mango, probably mostly due to the above-mentioned tank-mix incompatibilities, and perhaps because my jug has been sitting around in my garage for 20 years!

I will be re-visiting the matter.

I attended a continuing education class for commercial grove spraying, last summer, where Dr. Jonathon Crane handed out an Aug 2017 "Updated list of fungicides labeled for Florida mango production."  It listed Potassium silicate (not classified in any fungicide group), brand name Sil-Matrix, allowed for organic production, "disease depressant."

Field trials in the last four years, in New Zealand and in California, have shown impressive results in eradicative / curative spray mixes on grapes already infested with powdery mildew.  [The powdery mildews of grapes and mangos both tend to be described as "Oidium spp."  The powdery mildews of most other crops are not at all closely related.]




Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 11, 2018, 02:43:26 PM
Capt Ram,
Do you actually mix Copper with Plant Doctor?  Which Copper product?

I double-checked the Plant Doctor label, and sure enough, it does not seem to advise against use with Copper, perhaps because of Plant Doctor's near-neutral ph.  Ph 6.8-7.2.

[Most products containing Phosphites are very acidic and labels forbid mixing with copper, or spraying within 14 days either way.]
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on March 11, 2018, 04:09:08 PM
No Har-- Im using one for about 10 days then the other...Im not mixing them--Im using CuPro 5000-- 62% copper--
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on March 11, 2018, 04:12:57 PM
not sure how to delete this==
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on March 11, 2018, 04:15:30 PM
Here's another one for you Har...
I've got 2 Keitt trees 20 feet apart. that are 3 years old from a 15 gallon
And are loaded with fruit, some of the fruit looks like this
I've been hitting it with 62% copper and Plant Doctor
Should I pick all these off and throw in trash?
Btw..I look forward to your talk next month at the RFC

(https://s18.postimg.cc/8u9i4rl1x/20180311_081628.jpg) (https://postimg.cc/image/8u9i4rl1x/) Thanks Alex-- I will contune to keep the copper up for a while

(https://s18.postimg.cc/rmld8dzgl/20180311_081431.jpg) (https://postimg.cc/image/rmld8dzgl/)

That’s scab. Same treatment as copper. I don’t know if Plant Doctor will do much for it though.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pineislander on March 11, 2018, 04:49:42 PM
PineIslander,
another natural source of available Silicates is Australian Pine mulch.  The phytoliths of Silicates in the wood, along with a lot of resin, are what destroy lumber-mill saws, so operators don't want it.
Good. There is plenty of Aus pine in the hurricane debris mulch I'm using so that's a plus. I'll be looking into silicates for powdery mildew but didn't see it this year on fruits, it was around in my area on a few things near Thanksgiving but long before mango flowering.
I did find this comparison of silicate sources.
https://customhydronutrients.com/comparison-of-plant-available-silicon-in-fertilizer-sources-ezp-2.html
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on March 12, 2018, 08:41:13 AM
This new vendor (for me) has some great prices.  Am working up a cart with to include a hard to find Mycho called VAM and getting Peter's S.T.E.M.   They have silicates.
https://customhydronutrients.com/dry-water-soluble-hydroponic-fertilizers-c-1.html?zenid=85019da4cf9ab216ff5e698024e52bba
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on March 14, 2018, 09:39:33 AM
Should I pick any scab affected mangos off the tree while there small?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 14, 2018, 09:58:51 PM
Your sprays are probably working well enough to prevent spreading.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on March 15, 2018, 03:44:33 AM
Ok thanks Har
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropheus76 on March 15, 2018, 09:05:25 AM
I am going out of town for about 8 months during the warm/hot season. Last year on my mangoes we had bad weevil infestations as the primary bad guy affecting mine and my neighbor's mangoes and a few other trees. Hoping this continually cold weather will kill a bunch of those off, still 33 in the morning here in east Orlando. My in ground mangoes are recovering from the hard freezes of this year and have only recently sprouted new leaves mostly from the trunks. What kind of long term root drench can I use before I leave to kill off any weevils in the ground? Preferably something I can get off amazon or ebay.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gozp on March 16, 2018, 12:50:59 PM
Any idea what this necrotic may be?

(https://s17.postimg.cc/qerjegsvv/20180315_233020.jpg) (https://postimg.cc/image/qerjegsvv/)

(https://s17.postimg.cc/nkoe10izv/20180315_233037.jpg) (https://postimg.cc/image/nkoe10izv/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gozp on March 16, 2018, 05:09:13 PM
I suspect leafhopper/ sharpshooter or brown stink bug that got into this branch.


(https://s17.postimg.cc/b1g8aeljv/20180316_102036.jpg) (https://postimg.cc/image/b1g8aeljv/)

(https://s17.postimg.cc/g03qoxhmz/20180316_103400.jpg) (https://postimg.cc/image/g03qoxhmz/)

(https://s17.postimg.cc/x0mmxks3f/20180316_110532.jpg) (https://postimg.cc/image/x0mmxks3f/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FreshOne on March 16, 2018, 10:39:04 PM
I suspect leafhopper/ sharpshooter or brown stink bug that got into this branch.


(https://s17.postimg.cc/b1g8aeljv/20180316_102036.jpg) (https://postimg.cc/image/b1g8aeljv/)

(https://s17.postimg.cc/g03qoxhmz/20180316_103400.jpg) (https://postimg.cc/image/g03qoxhmz/)

(https://s17.postimg.cc/x0mmxks3f/20180316_110532.jpg) (https://postimg.cc/image/x0mmxks3f/)

why are the lower trunk white? whitewash?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gozp on March 16, 2018, 11:48:32 PM
Yessir, against rodents...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 17, 2018, 07:55:34 AM
Gozp,

I have no idea.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: weiss613 on March 17, 2018, 11:47:42 AM
I hope I’m not sounding too dumb or going off subject.
Reference to the #1 treatment of mango trees a few weeks ago when they were all blossoming and how to get the highest yield by preventing powdery mildew and anthracnose on the new growth and flowers.
Last year at a Miami Rare Fruit council lecture on mango diseases a Dr McMillan who is a very published plant pathologist probably in his mid to upper 80’s gave us the bottom line from all the research projects done on this topic.
Abound plus New-Film 17 gave the best results by far. No contest.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 17, 2018, 02:04:46 PM
Yes, that is definitely a great conventional treatment.  Remember to alternate with some very different product, to avoid breeding resistance to Abound.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on March 17, 2018, 02:15:28 PM
Yes, that is definitely a great conventional treatment.  Remember to alternate with some very different product, to avoid breeding resistance to Abound.

Abound is going to become worthless at the rate people are using it these days.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on March 17, 2018, 03:01:00 PM
Switch and / or a copper-based fungicide are great alternators for Abound.

I think commercial growers represent the biggest risk to group 11 resistance. Dooryard growers are unlikely to spend the time and money on a comprehensive fungicide routine, at least not on a regular basis.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 20, 2018, 05:00:13 PM
And I still haven't heard of a recommended treatment protocol for Mango Bacterial Black Spot specifically.  So it's just muddling along with Copper products and other products labeled for other bacteria.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: strkpr00 on March 28, 2018, 10:15:10 PM
just some more information to digest.

http://plantpath.ifas.ufl.edu/media/plantpathifasufledu/factsheets/pp0023.pdf (http://plantpath.ifas.ufl.edu/media/plantpathifasufledu/factsheets/pp0023.pdf)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 29, 2018, 09:38:56 AM
Though one column of that chart is dedicated to "bacterial black spot", the text contains no mention of it, and there is no picture.

The text describes anthracnose spots on leaves as "angular", which seems to have been more associated with bacterial black spot in illustrations I've seen from abroad.

The designation of 'Florigon' as highly susceptible to bacterial black spot is probably a typo--- like the spelling of 'Nam Doc Mai' as "Man dok Mai".  I believe 'Florigon' is highly resistant.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on March 29, 2018, 11:11:34 AM
Given the year that PDF was published, I'm guessing that they are referring to the BBS that infects leaves (not the new variant which infects fruits).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangokothiyan on March 29, 2018, 11:24:59 AM
The website states that you can get it at HD, but HD only carries a different product then the one shown on the vendor website. The HD version is a combo product that is not shown in the vendor website.

Do you have a HD sku number for the Organocide™ Plant Doctor?

The sku is on this http://www.organiclabs.com/Images/LabelImages/Plant%20Doctor%20Back%20Label%20Booklet%20Instructions%20for%20Use.pdf (http://www.organiclabs.com/Images/LabelImages/Plant%20Doctor%20Back%20Label%20Booklet%20Instructions%20for%20Use.pdf)
It is at the Home Depot in Jupiter and you can also find it online at Ebay. 
It clears up Anthracnose faster and better than anything I have ever used.


How much liquid do you use per gallon of Plant Doctor?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: strkpr00 on March 29, 2018, 05:40:30 PM
Given the year that PDF was published, I'm guessing that they are referring to the BBS that infects leaves (not the new variant which infects fruits).

I was wondering how much has changed since it was published.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 30, 2018, 10:19:22 AM
Organocide Plant Doctor is a registered pesticide, so you must follow the label.

There are other phosphites that are labeled as fertilizer....
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on April 14, 2018, 07:57:36 PM
Hello,

I'm almost afraid to ask this.  I notice a couple of my leaves on my Sweet Tart have black blemishes.  There's really only 1 leaf that has a lot of it.  I'm afraid it's bacterial black spot, but I'm not sure.  Sweet Tart is my favorite mango, and I'd be extremely sad if it's BBS, especially considering I bought the tree last year as a 7 gallon and haven't even had 1 fruit from it.  Other than the couple of leaves, the tree looks pretty healthy to me.  Should I be concerned or is it nothing?

(https://s14.postimg.cc/x4vgzzsil/20180414_184621.jpg) (https://postimg.cc/image/x4vgzzsil/)

(https://s14.postimg.cc/vd2i52m0d/20180414_184629.jpg) (https://postimg.cc/image/vd2i52m0d/)

(https://s14.postimg.cc/ywofuv1kt/20180414_184705.jpg) (https://postimg.cc/image/ywofuv1kt/)

(https://s14.postimg.cc/yjx1oor0t/20180414_184707.jpg) (https://postimg.cc/image/yjx1oor0t/)

(https://s14.postimg.cc/y75niivwd/20180414_184800.jpg) (https://postimg.cc/image/y75niivwd/)

(https://s14.postimg.cc/6wkcakqel/20180414_184812.jpg) (https://postimg.cc/image/6wkcakqel/)

(https://s14.postimg.cc/pc4t80etp/20180414_184835.jpg) (https://postimg.cc/image/pc4t80etp/)

(https://s14.postimg.cc/pc4t7yp3h/20180414_184908.jpg) (https://postimg.cc/image/pc4t7yp3h/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on April 14, 2018, 09:52:27 PM
Hello,

I'm almost afraid to ask this.  I notice a couple of my leaves on my Sweet Tart have black blemishes.  There's really only 1 leaf that has a lot of it.  I'm afraid it's bacterial black spot, but I'm not sure.  Sweet Tart is my favorite mango, and I'd be extremely sad if it's BBS, especially considering I bought the tree last year as a 7 gallon and haven't even had 1 fruit from it.  Other than the couple of leaves, the tree looks pretty healthy to me.  Should I be concerned or is it nothing?

(https://s14.postimg.cc/x4vgzzsil/20180414_184621.jpg) (https://postimg.cc/image/x4vgzzsil/)

(https://s14.postimg.cc/vd2i52m0d/20180414_184629.jpg) (https://postimg.cc/image/vd2i52m0d/)

(https://s14.postimg.cc/ywofuv1kt/20180414_184705.jpg) (https://postimg.cc/image/ywofuv1kt/)

(https://s14.postimg.cc/yjx1oor0t/20180414_184707.jpg) (https://postimg.cc/image/yjx1oor0t/)

(https://s14.postimg.cc/y75niivwd/20180414_184800.jpg) (https://postimg.cc/image/y75niivwd/)

(https://s14.postimg.cc/6wkcakqel/20180414_184812.jpg) (https://postimg.cc/image/6wkcakqel/)

(https://s14.postimg.cc/pc4t80etp/20180414_184835.jpg) (https://postimg.cc/image/pc4t80etp/)

(https://s14.postimg.cc/pc4t7yp3h/20180414_184908.jpg) (https://postimg.cc/image/pc4t7yp3h/)

It’s bacterial spot. At least the foliar form of it. Not a big deal unless you also have the strain that attacks the fruit.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 14, 2018, 11:30:23 PM
Remove those infected leaves, since there are so few, and it is so easy to do.  Discard in city trash.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on April 15, 2018, 01:42:53 PM
Thanks Alex and Har.  So I guess at this point I just need to wait to see if the fruit develops it too.  What are the odds my fruit would have BBS considering the tree has foliar BBS?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on April 15, 2018, 02:11:13 PM
Foliar BBS and fruit BBS are completely different. For example, NDM readily gets foliar BBS, but I've never seen it on the fruit. Foliar BBS can generally be ignored.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on April 15, 2018, 02:16:46 PM
Thanks Alex and Har.  So I guess at this point I just need to wait to see if the fruit develops it too.  What are the odds my fruit would have BBS considering the tree has foliar BBS?

There’s no direct correlation. Sweet Tart can get both.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on April 15, 2018, 02:55:18 PM
Thanks Alex & Cookie Monster.  I'm hoping my trees stay safe from the fruit BBS.  There's no preventative measures that we know of at this point right (for fruit BBS)?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on April 15, 2018, 04:57:33 PM
Thanks Alex & Cookie Monster.  I'm hoping my trees stay safe from the fruit BBS.  There's no preventative measures that we know of at this point right (for fruit BBS)?

Lots of copper. Practicing Good orchard sanitation. Windbreaks.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: spaugh on April 15, 2018, 11:04:23 PM
Foliar BBS and fruit BBS are completely different. For example, NDM readily gets foliar BBS, but I've never seen it on the fruit. Foliar BBS can generally be ignored.

Does it spread to other trees easily?  I have 1 tree that has it in the leaves.  Tree is still in a 5gal pot.  Not sure what to do with it?  I could probably strip all leaves and it would come back ok.  Its in a greenhouse and all the mango trees in there are growing nicely.  Just dont want to infect the rest of them.  It sucks they are shipping this from FL to CA
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 16, 2018, 06:24:47 AM
Was it shipped through the mail?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 16, 2018, 06:33:28 AM
At Palm Beach County Rare Fruit Council plant sales, I have been head plant inspector for years.  I have cut off any leaves or twigs that I believed to have Mango Bacterial Black Spot, on lightly infested plants.  Otherwise, I have rejected plants from the sale.  I have been regarded as overly picky.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on April 16, 2018, 07:06:45 AM
Does it spread to other trees easily?  I have 1 tree that has it in the leaves.  Tree is still in a 5gal pot.  Not sure what to do with it?

I'd treat it with a systemic copper.  Phyton 35 (expensive) or Magnabon CS2005. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: strkpr00 on May 13, 2018, 08:05:25 PM
This mango fell from my Hatcher. I can see fine splits in the rot spot. What dreaded disease is this?
(https://s7.postimg.cc/f80bwfn4n/20180513_152540.jpg) (https://postimg.cc/image/f80bwfn4n/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on May 13, 2018, 10:29:33 PM
This mango fell from my Hatcher. I can see fine splits in the rot spot. What dreaded disease is this?
(https://s7.postimg.cc/f80bwfn4n/20180513_152540.jpg) (https://postimg.cc/image/f80bwfn4n/)

Neofusicoccum or Phomopsis rot. You will probably lose most of the fruit to it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: spaugh on May 23, 2018, 09:38:22 AM
Does anyone know if deer will eat mango trees?  There's certain plants like pepper trees, eucalyptus, and other things with latex sap they won't touch here.  Apparently they dont eat strawberry guavas also.  So just wondering if they might leave mangos alone since they are kind of strong smelling and sappy.  Would make planting them easier if they didn't need a fence.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FreshOne on June 09, 2018, 01:59:57 PM
Can anyone identify the problem with my Mahachanok tree? New flushes are looking yellow and brown spots on new leaves.
(https://s15.postimg.cc/rc8gv28bb/IMG_1640.jpg) (https://postimg.cc/image/rc8gv28bb/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 09, 2018, 05:55:03 PM
FreshOne,

Your MahaChanok looks deficient in Copper and Zinc and Potassium.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Orkine on June 09, 2018, 08:50:53 PM
BBS - I assume this can be transmitted through budwood / grafting.
Is there something that can be done if you are not sure if your scions are from infected trees?
Is there a best practice that will reduce the chances of passing disease along?
I want to increase my collection but don't want to introduce disease.

Big picture here, are there things as a community we should all be doing. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FreshOne on June 10, 2018, 12:45:56 AM
FreshOne,

Your MahaChanok looks deficient in Copper and Zinc and Potassium.


Thanks, this tree is in a container. I'll give it some sul-mag-po and see how it response.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 10, 2018, 10:34:19 AM
If you are trying to be all "organic", use seaweed in all your waterings and sprays.  This will provide some Copper and Zinc, etc.  Some kinds of rock dusts would also help.  Some chelated products and some complexed products are also labeled for use in organic production.

I don't see any indication of Mango Bacterial Black Spot (MBBS). 
[Bacterial black spots on other plants are usually other species of bacteria, which tend to be host specific, so we should not leave off the word "mango" in the name.]
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: paulmctigue on June 10, 2018, 07:38:10 PM
What's wrong with my buddies tree?
(https://s33.postimg.cc/6kpqaitvv/Attach16296_20180610_183334.jpg) (https://postimg.cc/image/6kpqaitvv/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on June 10, 2018, 08:16:57 PM
Looks like a Keitt? I see what appears to be MBBS on the mango in the background.

What's wrong with my buddies tree?
(https://s33.postimg.cc/6kpqaitvv/Attach16296_20180610_183334.jpg) (https://postimg.cc/image/6kpqaitvv/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: paulmctigue on June 10, 2018, 09:52:07 PM
Leaves are messed up on the edges
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: spaugh on June 10, 2018, 10:45:56 PM
Bugs are eating the leaves
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 10, 2018, 11:49:09 PM
Maybe old powdery mildew damage, but that is usually not that white.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on June 11, 2018, 09:12:06 PM
While out in the yard today I noticed a brown spot on the trunk of one of my Pickering trees. It's not got sap coming out, it's just a dry wound. I noticed the same thing on the trunks of some of my seedling carambola trees as well.

The Pickering is in a 7-gallon pot. We've had heavy rains recently and now it's been hot and full sun and humid, if that gives any help determining what might be going on.

Any clue as to what's caused this? And if so, what to do about it? It's one of my favorite trees and I don't want to lose it.


(https://s15.postimg.cc/fnggujhpz/20180611_205605.jpg) (https://postimg.cc/image/fnggujhpz/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 12, 2018, 08:26:18 PM
Perhaps a child has gone around whacking the trunks with a stick or an umbrella tip?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: murahilin on June 12, 2018, 08:41:20 PM
While out in the yard today I noticed a brown spot on the trunk of one of my Pickering trees. It's not got sap coming out, it's just a dry wound. I noticed the same thing on the trunks of some of my seedling carambola trees as well.

The Pickering is in a 7-gallon pot. We've had heavy rains recently and now it's been hot and full sun and humid, if that gives any help determining what might be going on.

Any clue as to what's caused this? And if so, what to do about it? It's one of my favorite trees and I don't want to lose it.


(https://s15.postimg.cc/fnggujhpz/20180611_205605.jpg) (https://postimg.cc/image/fnggujhpz/)

That looks fatal and contagious. I think you should cut them all down and burn them.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on June 12, 2018, 09:08:53 PM
HA! My hope is it's nothing--maybe a rodent bite?

My fear comes from having an in-ground peach tree trunk chewed up good by a rabbit and the tree ultimately died, and also a Maha Chanok tree that started with a spot of flaky bark and it ended up looking like this:


(https://s33.postimg.cc/j4s9e6kmj/20171001_080520.jpg) (https://postimg.cc/image/j4s9e6kmj/)

Thanks!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FreshOne on June 13, 2018, 11:09:20 PM
If you are trying to be all "organic", use seaweed in all your waterings and sprays.  This will provide some Copper and Zinc, etc.  Some kinds of rock dusts would also help.  Some chelated products and some complexed products are also labeled for use in organic production.

I don't see any indication of Mango Bacterial Black Spot (MBBS). 
[Bacterial black spots on other plants are usually other species of bacteria, which tend to be host specific, so we should not leave off the word "mango" in the name.]

I've foliage fed with southern ag citric micro-nutrients and sul-mag-po to the soil cause that's what i have. not all 'organic' at all.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on June 14, 2018, 07:58:57 AM

I've foliage fed with southern ag citric micro-nutrients and sul-mag-po to the soil cause that's what i have. not all 'organic' at all.

You're like me, you use the best approach keeping your personal health in mind and not taking risks.  I have had no luck with Southern Ag foliar treatments.  I have with Keyplex 350DP.  That is some miracle stuff especially with chlorosis prone material like Flying Dragon citrus rootstock which has a terrible time uptaking or processing micros.

BTW, if you're not adding a surfactant to your sprays, you're wasting your time.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jose Spain on June 14, 2018, 04:27:21 PM
BTW, if you're not adding a surfactant to your sprays, you're wasting your time.

Mark, you mean any product or just some of them? For example, we must add surfactant to seaweed or phytohormones too?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on June 15, 2018, 08:14:13 AM
BTW, if you're not adding a surfactant to your sprays, you're wasting your time.

Mark, you mean any product or just some of them? For example, we must add surfactant to seaweed or phytohormones too?

No, only sprays - herbicides, pesticides.  It's a spreader-sticker and the product becomes rainfast.  I use NIS aka non-ionic surfactant.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jose Spain on June 16, 2018, 03:09:23 AM
Got it, thank you mate. ;)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on July 12, 2018, 08:47:58 PM
I've got 2 Keitt trees with a bad case of MBBS
Just about all the fruit is split and diease ..
If I severely prune it back , taking all leaves off would this help? Or will the MBBS come back?
If I top work the tree, would this also be infected?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on July 12, 2018, 09:48:44 PM
I severely pruned mine, and it came back :-(. Now my other keitt has it too. You should be able to top work, as the disease is not systemic as far as I know.

I've got 2 Keitt trees with a bad case of MBBS
Just about all the fruit is split and diease ..
If I severely prune it back , taking all leaves off would this help? Or will the MBBS come back?
If I top work the tree, would this also be infected?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Paquicuba on July 12, 2018, 11:35:44 PM
Can someone please shed a light on what's going on with this little Pickering Tree? It looks healthy until you see that part of the bark is gone —everything is dry, no gummosis or something of that nature. Have you experienced the same issue? should I keep it or get rid of it now that it's just a little over 2' tall?

Thanks for your input!!

(https://s8.postimg.cc/pkajk66sh/IMG_1738.jpg) (https://postimg.cc/image/pkajk66sh/)

(https://s8.postimg.cc/ys2s0v64x/IMG_1740.jpg) (https://postimg.cc/image/ys2s0v64x/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on July 13, 2018, 10:49:57 AM
Could be sunburn or chafing injury. I would leave it and let it heal.

Can someone please shed a light on what's going on with this little Pickering Tree? It looks healthy until you see that part of the bark is gone —everything is dry, no gummosis or something of that nature. Have you experienced the same issue? should I keep it or get rid of it now that it's just a little over 2' tall?

Thanks for your input!!

(https://s8.postimg.cc/pkajk66sh/IMG_1738.jpg) (https://postimg.cc/image/pkajk66sh/)

(https://s8.postimg.cc/ys2s0v64x/IMG_1740.jpg) (https://postimg.cc/image/ys2s0v64x/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 13, 2018, 11:58:30 AM
Looks as though someone did a bud graft, which then died.  I hope that wasn't the 'Pickering'--- if it was, then the rest is probably Turpentine.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Paquicuba on July 13, 2018, 12:01:18 PM
Thanks a lot guys!! Great comments!! Hopefully it'll heal nicely.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on July 13, 2018, 02:06:54 PM
Looks as though someone did a bud graft, which then died.  I hope that wasn't the 'Pickering'--- if it was, then the rest is probably Turpentine.

That damage looks to be above the graft and tbose leaves are definitely that of  Pickering.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 14, 2018, 06:26:59 PM
Good.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on July 20, 2018, 05:56:31 AM
Thanks Jeff, if it came back on yours, I'm gonna top work the 2 trees I have..
Any. Suggestions on what trees are most resistance to MBBS?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on July 20, 2018, 05:56:39 AM
Thanks Jeff, if it came back on yours, I'm gonna top work the 2 trees I have..
Any. Suggestions on what trees are most resistance to MBBS?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: behlgarden on July 20, 2018, 05:01:21 PM
I had a ground squirrel chew my young cado, stone fruit, and mango branches, in one instance, it chewed my grafted mango right above the graft, it was pushing and then it stalled. I was pissed and wanted to yank it. it had less than 1/3rd branch left and it was 1/4" thick to begin with. In 3 weeks I see it pushing hard again and the wound is fattening and healing.

may be it will work out, not sure in the long run if that tree would be strong enough.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitSal on September 10, 2018, 12:35:17 PM
Hello all,

First, thank you for your very helpful posts. I have quietly consulted this forum for advice for years. I have two young (no harvest yet) mango trees: a Pickering that is growing vigorously and beautifully, and a Cogshall that looks terrible. Please help me diagnose my Cogshall's problem; is it bacterial black spot? How do I treat it?

I appreciate any thoughts on the matter!
(https://s22.postimg.cc/q2z0n1trx/image.jpg) (https://postimg.cc/image/q2z0n1trx/)

(https://s22.postimg.cc/3r17toa3h/image.jpg) (https://postimg.cc/image/3r17toa3h/)

(https://s22.postimg.cc/jp9xjuem5/image.jpg) (https://postimg.cc/image/jp9xjuem5/)

(https://s22.postimg.cc/4gk062snh/image.jpg) (https://postimg.cc/image/4gk062snh/)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 10, 2018, 09:44:22 PM
Mango Decline:  root difficulties and resulting multiple deficiencies, and then susceptibility to any pest or disease that comes along, such as thrips, powdery mildew, and anthracnose.  [I don't think I see any Mango Bacterial Black Spot on it.]

This is commonly caused by excess of compost, burying the tree too deep, or planting in potting soil that decomposes, settles, and becomes mucky.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pineislander on September 11, 2018, 08:02:40 AM
Hello all,

First, thank you for your very helpful posts. I have quietly consulted this forum for advice for years. I have two young (no harvest yet) mango trees: a Pickering that is growing vigorously and beautifully, and a Cogshall that looks terrible. Please help me diagnose my Cogshall's problem; is it bacterial black spot? How do I treat it?

I appreciate any thoughts on the matter!
Interesting is that many of your leaves look similar to a tree I was dealing with this time last year. As you can see just one micronutrient and fish emulsion spray and gypsum on soil cleared up the problem and this year the tree is very happy.

http://tropicalfruitforum.com/index.php?topic=1001.msg312557;topicseen#msg312557 (http://tropicalfruitforum.com/index.php?topic=1001.msg312557;topicseen#msg312557)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Orkine on September 22, 2018, 06:24:05 PM
I dont know what I need to do to fix this.

These are grafts on a recently top-worked tree.
The grafts took but the growth is anemic at best.  The leaves are tiny and even when there has been a second flush it sits right on the first making it look more like a rose than a mango (see fourth and fifth picture).

Should I feed this plant Nitrogen, it needs to grow.
I have or can get fertilizer with minors if that is what this baby needs.

(https://thumb.ibb.co/msGyxU/IMG_20180920_191702934.jpg) (https://ibb.co/msGyxU) (https://thumb.ibb.co/dpK7rp/IMG_20180920_191710775.jpg) (https://ibb.co/dpK7rp) (https://thumb.ibb.co/cycGj9/IMG_20180920_191713165.jpg) (https://ibb.co/cycGj9) (https://thumb.ibb.co/ffRnrp/IMG_20180920_191716615_BURST000_COVER_TOP.jpg) (https://ibb.co/ffRnrp) (https://thumb.ibb.co/byCSrp/IMG_20180920_191719308.jpg) (https://ibb.co/byCSrp)


This is my most recent graft on the same stump and the first flush here look more normal.  The blue dots are from a recent spray of copper.

(https://thumb.ibb.co/b7T0Bp/IMG_20180920_191659491.jpg) (https://ibb.co/b7T0Bp)

In case it is relevant, I don't irrigate or fertilize my lawn - which comes right up next to the tree.  I use a mulching mower to the grass clipping return to the soil.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 24, 2018, 08:02:21 AM
I always recommend fertilizing recently top-work-grafted mangos with a full-mix fertilizer (i.e., Nitrogen-containing fertilizer with all the other nutrients too, and Calcium, if the soil isn't lime laden).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on September 24, 2018, 11:26:18 AM
I no longer do complete cutback for top-working. Instead, I'll lop off 1/3 to 1/2 of the tree then graft the resulting sprouts. The rest gets top-worked in the following years. This leaves the tree with foliage and allows it to continue to photosynthesize.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on September 29, 2018, 12:04:55 PM
Will someone ID this pest, please?  Whatever this is, my Cogshall is being hit pretty hard with it.  A Pickering, about 10 feet away, has none of this.
Also, with the frequent posts about rodent control, I wanted to intro Rio.  A feral/stray cat who showed up in my backyard one day.  My other cat, Gio, took a liking to him and the rest is history.  He likes to hang out in the yard.  His hunting skills are without equal.  Mice, rats, snakes, lizards, and squirrels have all been victimized by this guy.  Very effective, organic, works cheap. 
(https://i.postimg.cc/gXJ13pCj/20180929_102423.jpg) (https://postimg.cc/gXJ13pCj)

(https://i.postimg.cc/ThBB5ZC2/20180929_102442.jpg) (https://postimg.cc/ThBB5ZC2)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Orkine on September 29, 2018, 01:50:18 PM
I no longer do complete cutback for top-working. Instead, I'll lop off 1/3 to 1/2 of the tree then graft the resulting sprouts. The rest gets top-worked in the following years. This leaves the tree with foliage and allows it to continue to photosynthesize.
That is how I am doing the next two topworks.
I took the first third of my starter tree (a Tommy A that I got from Home Depot more than 13 years ago) and a second tree from the same period is now 1/3 whatever it used to be, with a number of varieties grafted on for a 4 of 5 in one tree in the future.  Grafts on these trees grow very nicely.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pineislander on September 29, 2018, 07:51:26 PM
Will someone ID this pest, please?  Whatever this is, my Cogshall is being hit pretty hard with it.  A Pickering, about 10 feet away, has none of this.
Also, with the frequent posts about rodent control, I wanted to intro Rio.  A feral/stray cat who showed up in my backyard one day.  My other cat, Gio, took a liking to him and the rest is history.  He likes to hang out in the yard.  His hunting skills are without equal.  Mice, rats, snakes, lizards, and squirrels have all been victimized by this guy.  Very effective, organic, works cheap. 
(https://i.postimg.cc/gXJ13pCj/20180929_102423.jpg) (https://postimg.cc/gXJ13pCj)

(https://i.postimg.cc/ThBB5ZC2/20180929_102442.jpg) (https://postimg.cc/ThBB5ZC2)
Could be spiderweb or Fall Webworm. Inspect inside web for moth larvae.
https://www.hgtv.com/outdoors/gardens/planting-and-maintenance/fall-webworms (https://www.hgtv.com/outdoors/gardens/planting-and-maintenance/fall-webworms)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 30, 2018, 12:32:07 PM
Or possibly spider-mites, which you may need magnification to see.  There is probably no visible damage, right?

Twirl most of it off onto a stick, just before you spray hard with water.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on September 30, 2018, 01:51:30 PM
Correct.  No visible damage and nothing visible inside the webs.  Knocked off most with a stick, then blasted all with the hose.  Seems to be a minor issue.  Appreciate the help.  Thank you.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Orkine on October 11, 2018, 08:19:46 PM
I did several mango graft this season and got many good takes.
On one of the grafts, I recently took off the binding which was not expanding with the plant.  It had started to girdle it but I got it in time and the plant appears to have recovered (the compressed portion has increased in thickness to match the rest of the branch.)
I noticed a few days ago that some sap had oozed out at the graft location.  I am wondering if in expanding the back got cracked allowing something to infect the joint.  Has anyone observed this and is there anything I should do? 

The tree the graft is on is one I am top working.  The tree pushing new growth heavily and all over, including on the new grafts and the untrimmed parts of the original tree.  The tree looks very healthy other than this oozing sap which also is observed at one more graft location.  Other grafts on the tree look fine, the two with the sap had some stress.


The first had the wrapping left on too long on the graft. used to be thinner but you can hardly tell.  If I am going to lose this I can start prepping budwood from it to graft elsewhere.
(https://thumb.ibb.co/dCrQm9/IMG-20181011-204226704.jpg) (https://ibb.co/dCrQm9) (https://thumb.ibb.co/h8y5m9/IMG-20181011-204314710.jpg) (https://ibb.co/h8y5m9) (https://thumb.ibb.co/hzhWR9/IMG-20181011-204303696.jpg) (https://ibb.co/hzhWR9)


The top of the graft on this broke in a wind event.  A small piece that was left had 2 buds, both pushed.  One has sap and the other does not.   
(https://thumb.ibb.co/kUMQm9/IMG-20181011-204352478.jpg) (https://ibb.co/kUMQm9) (https://thumb.ibb.co/k7zpDp/IMG-20181011-204405361.jpg) (https://ibb.co/k7zpDp)


 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on October 12, 2018, 08:59:14 AM
Orkine -- looks fine to me.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Orkine on October 13, 2018, 08:25:47 AM
Orkine -- looks fine to me.
Thanks Jeff, that's good news.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Lionking on October 14, 2018, 01:34:47 PM
Good morning my friends,

     I’m in need of some help and advice.  I have a couple of mango trees that I’m sure are in need of nutrients.  I have been following this thread to try to compare the symptoms on my trees to those of fellow members.
From the pictures I have seen,  and the advice I have read,  I can tell my trees are in need of nutrients and that there might be some other issues.
I water every 3 to 4 days with city water,  recently added a bit of epsom per recommended dosage as well as a bit of sulfur also per recommended dosage.
Some help and advice will be appreciated.  What nutrients does one recommend.
These pictures were taken this morning
Pictures 1 and 4 same tree- Manila seedling in 5 gallon pot
Pictures 5 and 6 are lemon zest in 7 gallon pot
Pictures 2,3,7and 8 are coconut cream in 25 gallon pot


(https://i.postimg.cc/phs9GV01/82-F9717-C-5-C90-4276-825-F-D790698-E63-C3.jpg) (https://postimg.cc/phs9GV01)

(https://i.postimg.cc/7CyTbWGX/98-D755-EA-7377-4-EBD-858-C-87-EF6-A0530-D1.jpg) (https://postimg.cc/7CyTbWGX)

(https://i.postimg.cc/BXkFf6Jr/999-CCCC5-8-EDA-4045-9042-3-E2154-C86912.jpg) (https://postimg.cc/BXkFf6Jr)

(https://i.postimg.cc/68ZvWX3y/9-D21-C50-A-9575-4-F66-BD82-19-AD4-ED1-A5-A3.jpg) (https://postimg.cc/68ZvWX3y)

(https://i.postimg.cc/2qFLW7nY/AB7779-F4-6416-49-DA-B27-F-8-C680-A6-FE5-DE.jpg) (https://postimg.cc/2qFLW7nY)

(https://i.postimg.cc/HcYc98ty/E392360-E-EEF1-4-ADC-A878-85503-E6-D5-F6-B.jpg) (https://postimg.cc/HcYc98ty)

(https://i.postimg.cc/pppjS8MQ/E848-C4-C0-9568-433-C-B5-B8-73932-C81-DD05.jpg) (https://postimg.cc/pppjS8MQ)

(https://i.postimg.cc/9zXZGKxn/F90205-F3-09-B0-4-FDE-9-F91-6-A71-AE611-FA7.jpg) (https://postimg.cc/9zXZGKxn)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Lionking on October 14, 2018, 01:51:26 PM
Forgot to mention that I also have other mango trees that don’t have these issues.
2 - OS on terpentine
1- keit
1- pineapple pleasure grafted onto Manila
1- PPK
1- ST
1- peach cobbler grafted onto a Keitt
1- peach cobbler grafted onto corriente
As welll as several Manila and corriente seedlings that I plan to use for rootstock.
All are doing well.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 14, 2018, 10:52:17 PM
Spray new growth with a full micronutrient mix plus extra Copper, per labels, to correct deficiencies of Copper, Zinc, Iron and Manganese, and to suppress Powdery Mildew.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Lionking on October 15, 2018, 12:51:38 AM
Spray new growth with a full micronutrient mix plus extra Copper, per labels, to correct deficiencies of Copper, Zinc, Iron and Manganese, and to suppress Powdery Mildew.

Thanks Har,
I will take care of that first thing.. I appreciate your help and advice!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Samu on October 15, 2018, 08:44:38 PM
I need help identifying this what look abnormality to me on my "Golek" mango leaves; have some gray/brow-nish  spots along the middle on both sides of the mature leaves; (the younger leaves look ok);  please see photos below. My other 4 mango trees don't have this symptoms.
Thanks in advance for your help!

Top side:
(https://i.postimg.cc/s1kK08XW/Golek-top-leave.jpg) (https://postimg.cc/s1kK08XW)

Underside:
(https://i.postimg.cc/cgKMFMGT/Golek-bot-leave.jpg) (https://postimg.cc/cgKMFMGT)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 16, 2018, 10:46:47 AM
Samu, did you spray before these marks appeared, such as with an emulsion, or oil, or soap?

On one hand, the actively spreading blackening of the tissue, around the dead grey areas, looks like an infection, perhaps fungal;  on the other hand, the placement of the spots along the midvein, on many of the leaves, seems curiously regular, which would be unusual with an infection.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Samu on October 16, 2018, 12:03:28 PM
No, I didn't spray with anything on this mango tree.
I first noticed this symptom last May, so it looks like
it doesn't effect the growth of the tree, as far as I can tell.

Assuming this tree is infected by fungus or other micro organisms,
what would you recommend for me to use?
Thanks for taking the time and response, Har!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 16, 2018, 01:30:20 PM
Spraying with any micro-nutrient mix, plus additional Copper, can toughen the leaves against spread of most diseases.

So can a separate spray with Phosphite and Silicon.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Samu on October 16, 2018, 03:37:07 PM
OK Har, I will do that, thanks again!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pocketsandmangos on October 28, 2018, 08:32:47 PM
Made a recent post about this...but it seems this may be the best place to start!

noticed browning / blotching on leaves recently. Glenn and Valencia pride. Plants are potted in Pro Mix HP. Currently watering every 3-4 days here in Fort Myers as the rain has definitely let up. Both trees are flushing/growing still. Thanks!


(https://i.postimg.cc/18XwJsyf/Mango-Leaf-1.jpg) (https://postimg.cc/18XwJsyf)


(https://i.postimg.cc/2bQZV57X/Mango-leaf-2.jpg) (https://postimg.cc/2bQZV57X)

(https://i.postimg.cc/K45TbRz1/Mango-leaf-3.jpg) (https://postimg.cc/K45TbRz1)

(https://i.postimg.cc/nMCS5bT9/Mango-leaf-4.jpg) (https://postimg.cc/nMCS5bT9)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 29, 2018, 04:42:28 PM
I am not familiar with the mosaic look in the first picture.  Was any herbicide used on a nearby property?

The other pictures look pretty good.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on November 03, 2018, 05:58:13 PM
Mature Cogshall.  Produced about 80 mangoes this season.  After harvest it had a hearty growth flush in the upper portion of the tree.
But if you look at the photos you'll see many of the lower branches have no vegetation and are completely dry and apparently dead.  I tried tipping all of them about two months ago, hoping to encourage growth, but nothing.  What might be happening?


(https://i.postimg.cc/5jJhvCmL/20181103-174531.jpg) (https://postimg.cc/5jJhvCmL)


(https://i.postimg.cc/Tp4NkLnk/20181103-174626.jpg) (https://postimg.cc/Tp4NkLnk)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pineislander on November 03, 2018, 06:47:06 PM
Your lower branches in heavy shade may have decided to die back. Pruning should include periodically shortening some branches and opening the interior canopy at the top to let light in. Hard to tell from the picture but the tree may not be getting much light from the sides which is usually the reason for lower branches dying off.

Cogshall is usually a slow grower but can get dense from the two trees I have. I see your tree at an early stage developed a double trunk be aware that a tight crotch angle like this will eventually become a weak point on a tree and should have been avoided. What happens is the two branches as they grow will include bark between them such that they don't actually have a union along the crotch. The tight angle puts most stress at the lower end of the crotch and if a wind event or heavy fruit load occurs it is much more likely to cause the tree to split.

I recently walked a 3 year old orchard and saw nearly 10% of trees had double trunks with angles like that. The problem will become worse as the trees get older you could easily lose 1/2 the tree and maybe set the whole tree up for failure as such damage would be a perfect place for rot and be hard to heal.

Looking at the picture again you might consider taking the right side fork down quite a bit next year to see if it can have less stress and help re-build the lower canopy, if there is enough light. That branch is growing more horizontal towards the fence and will have the most stress. That would also lessen the stress on the crotch. Maybe a cut near the growth ring on that branch where it turns more horizontal about 2 feet above the crotch should stimulate new growth. Your decision and you may lose crop for a year or two on that branch, less chance of that if you do it early.

Crotch angle:
https://www.phillyorchards.org/tag/crotch-angle/ (https://www.phillyorchards.org/tag/crotch-angle/)

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MangoCountry on November 03, 2018, 10:52:11 PM
Ive noticed the underside of my Lemon Meringue leaves look like this. The tops look fine and healthy. Does anyone know the cause and if its an issue. There are no insects or insect damage. Thank you.
(https://beta-static.photobucket.com/images/y304/mannsnick/0/b0908513-560d-4c2f-b2fa-9e96b4b6cbf2-original.jpg?width=1920&height=1080&fit=bounds) (https://beta.photobucket.com/u/mannsnick/p/b0908513-560d-4c2f-b2fa-9e96b4b6cbf2)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 04, 2018, 01:53:00 PM
Did you look at it under magnification?  Are the spots slightly raised?  Any white exoskeletons lying about?

Did you spray with a nutritional mix, or any other spray?

Are the leaves near the ground?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MangoCountry on November 04, 2018, 02:23:49 PM
Hey Har. The leaf is smooth no bumps an no exoskeletons. It is less than a foot off the ground.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 04, 2018, 09:33:29 PM
Possibly soil splash-up.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mango Stein on November 04, 2018, 11:21:41 PM
An update to the mango-splitting and spike-necrotizing issue I had. Boron seems to have resolved this issue. I applied it mostly through foliar spray. Now good fruit set.

(https://i.postimg.cc/RqQq7Mrz/kwan.jpg) (https://postimg.cc/RqQq7Mrz)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 05, 2018, 09:47:06 AM
Yes!  Spraying Boron and chelated Calcium on open mango blooms can make a huge difference in fruit set.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on November 05, 2018, 02:50:56 PM
I'd like to try the boron and calcium.  Any recommended product I can purchase?  Thank you.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 05, 2018, 07:52:12 PM
Brexil Ca + B, which is carried by Helena Chemicals.  If you are not in the trade....

There are several other similar products at other suppliers.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on November 08, 2018, 07:54:40 AM
I'd like to try the boron and calcium.  Any recommended product I can purchase?  Thank you.

I use Solubor as a foliar spray on grapevines & a soil drench on stuff like cados and mangos.  Less is more regarding B.  Most plant foods contain B.

Depending on your soil profile Ca can be applied via gypsum or lime.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 08, 2018, 09:31:00 AM
What I recommended is specifically to spray on OPEN mango bloom.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dross99_si on November 14, 2018, 04:21:58 PM
Our baby mango plants have been doing great up until recently. Is this anthracnose, BBS, powdery mildew or some other form of disease? Can it be treated or no? What is our best course of action in this situation?
Thanks guys!
(https://i.postimg.cc/0b3mh13p/237-AE03-D-03-A3-4-D38-A88-F-1-AFC50864-DCE.jpg) (https://postimg.cc/0b3mh13p)

(https://i.postimg.cc/hfhTCtCD/54-A51623-27-BE-45-A2-A166-F29-FECD72944.jpg) (https://postimg.cc/hfhTCtCD)

(https://i.postimg.cc/vD05LVt2/6059-E2-B3-9-D68-4358-A95-B-1-AFCE66-B2027.jpg) (https://postimg.cc/vD05LVt2)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 15, 2018, 11:15:51 AM
This is powdery mildew damage.  Copper sprays can suppress the spread of powdery mildew and anthracnose, etc.

If you have a sprayer with a very good jet agitator inside the tank, you can spray elemental Sulfur--- only in cool weather.

Perhaps some of the live, biological sprays would work, but I have never tried those;  I assume they won't work if the trees have been sprayed with Copper in the last month or two, so it is either/or.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dross99_si on November 15, 2018, 02:13:20 PM
Thanks Har. Any particular spray you can suggest? Or perhaps post a link to a good product?
Thank you
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on November 30, 2018, 11:39:01 AM
A few weeks ago I posted here about my concern for my Cogshall.  Starting early this past summer I began to notice several of the lower branches losing their leaves.  As the summer moved into autumn those branches were completely defoliated and eventually became dry and dead. I could easily snap the branch off the tree.  I pruned the affected branches, hoping to stimulate growth but to no avail.
Now the dying branches are moving up the tree and I'm beginning to see the same problem spreading.  Any ideas what's happening?

(https://i.postimg.cc/cKf5tzvZ/20181130-091145.jpg) (https://postimg.cc/cKf5tzvZ)

(https://i.postimg.cc/YGYk98Hm/20181130-091138.jpg) (https://postimg.cc/YGYk98Hm)

(https://i.postimg.cc/dLHMJgyx/20181130-091207.jpg) (https://postimg.cc/dLHMJgyx)

(https://i.postimg.cc/hz1DsM5R/20181130-091235.jpg) (https://postimg.cc/hz1DsM5R)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 30, 2018, 01:03:55 PM
Could you please post close-up pictures, top and botoom, of still-alive but already affected leaves?

Also of the still-alive but sick twigs?

Is there sap oozing anywhere?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on November 30, 2018, 03:23:09 PM
I haven't seen any sap on any part of the tree.
As for photos, I took a few more that I hope help diagnose the problem.  You'll see the leaves have what I think is probably a bacterial infection.  The bark on some of the branches is falling off, too.

(https://i.postimg.cc/nsyH7CTQ/8.jpg) (https://postimg.cc/nsyH7CTQ)

(https://i.postimg.cc/Vr4mhDmX/9.jpg) (https://postimg.cc/Vr4mhDmX)

(https://i.postimg.cc/NLzwryMG/4.jpg) (https://postimg.cc/NLzwryMG)

(https://i.postimg.cc/R3N7hbbZ/2.jpg) (https://postimg.cc/R3N7hbbZ)

(https://i.postimg.cc/XpLd80Rv/3.jpg) (https://postimg.cc/XpLd80Rv)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 30, 2018, 08:28:48 PM
The missing bark is probably from an impact injury.

The curling burnt leaves are probably from Powdery Mildew.

The spotted bark....?

The angular black spots with yellow halos on the leaves are probably Mango Bacterial Black Spot.

The majority of the leaves are nutritionally deficient in Manganese and Iron.

Have you had a soil test and mango leaf tissue test (for nutritional status)?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on December 09, 2018, 09:19:14 AM
Brexil Ca + B, which is carried by Helena Chemicals.  If you are not in the trade....

There are several other similar products at other suppliers.

Hi Har,

Hopefully, I'm not derailing too much.  I'm trying to maximize mango yield, and instead of the Brexil Ca + B, I'm thinking of using Grow Scripts (https://www.growscripts.com/shop/bloomtime-formula-calcium-magnesium-boron-blend/ (https://www.growscripts.com/shop/bloomtime-formula-calcium-magnesium-boron-blend/)) Calcium Magnesium Boron Blend (4.5% Calcium / 2.25% Magnesium / 0.50% Boron and 0.10% Humic Acid).  The concentrations don't look as potent as the Brexil, but I hope it will work.

I will spray copper on newly formed spikes before flowers open, and planning on using the Bonide concentrate (http://www.bonide.com/assets/Products/Labels/l811.pdf (http://www.bonide.com/assets/Products/Labels/l811.pdf)) as they claim it helps with Powdery Mildew as well.  Is the Bonide a good product to use on the initial spikes? 

I'm looking for a cheap sprayer that works well for applying the Copper.  Is this one From Harbor Freight good - https://www.harborfreight.com/1-14-gal-home-and-garden-sprayer-63145.html (https://www.harborfreight.com/1-14-gal-home-and-garden-sprayer-63145.html) ?  I only have 3 smallish trees, so don't need a high end sprayer, just something that sprays a nice mist and helps me get the job done fast.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on December 10, 2018, 02:53:43 PM
I bought a 5 gallon CAC from Exotica this weekend, and it had some black spots on leaves and white spots under the leaves. Steve cleaned the leaves as much as he could before the sale. I was a little hesitant and afraid that it will spread to my existing mango trees, but still bought it since I haven't seen CAC in stock at other nurseries locally. Black spot is removable with a paper towel and white spots are removable with fingernails (they just slide off). I applied Neem oil about 3 days ago and I still see a lot of white spots under the leaves. I left the tree in the front yard away from other mangoes. What is the best remedy?

Thanks.


(https://i.postimg.cc/xqP5C1rw/IMG-0357.jpg) (https://postimg.cc/xqP5C1rw)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: spaugh on December 10, 2018, 04:40:24 PM
I bought a 5 gallon CAC from Exotica this weekend, and it had some black spots on leaves and white spots under the leaves. Steve cleaned the leaves as much as he could before the sale. I was a little hesitant and afraid that it will spread to my existing mango trees, but still bought it since I haven't seen CAC in stock at other nurseries locally. Black spot is removable with a paper towel and white spots are removable with fingernails (they just slide off). I applied Neem oil about 3 days ago and I still see a lot of white spots under the leaves. I left the tree in the front yard away from other mangoes. What is the best remedy?

Thanks.


(https://i.postimg.cc/xqP5C1rw/IMG-0357.jpg) (https://postimg.cc/xqP5C1rw)

Hard to tell from the pics but maybe scale.  A lot of his plants have scale.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 10, 2018, 09:24:21 PM
Mango scale.  If the scale is already dead and dried up, it will just flake off.  If it is still alive (or if it is recently dead and not yet dried up), it will smear, or leave a wet spot.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 10, 2018, 09:28:14 PM
FLMikey,  the Calcium-Magnesium-Boron product is probably good.  The Bonide product is labeled for avocados, but not mangos.  The sprayer should work for a year or so, until the trees get bigger.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on December 11, 2018, 12:00:34 AM
Mango scale.  If the scale is already dead and dried up, it will just flake off.  If it is still alive (or if it is recently dead and not yet dried up), it will smear, or leave a wet spot.

Har and Spaugh, thanks for the positive identification. I tried to get rid of the scales and sooty mold by hand using paper towels as much as I could today. There are just too many leaves, lol. Sprayed with neem oil as well. Hope CAC will recover soon now that it is under full sun.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 11, 2018, 05:42:58 AM
Drenching the soil, or spraying the leaves with an Azadirachtin-containing product, such as Aza-Sol (OMRI approved), will prevent immature scale and other insect pests from molting--- so no successful reproduction.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on December 11, 2018, 10:49:48 AM
Drenching the soil, or spraying the leaves with an Azadirachtin-containing product, such as Aza-Sol (OMRI approved), will prevent immature scale and other insect pests from molting--- so no successful reproduction.

I am so relieved that scales can be controlled easily. I also found this on plantwise website "Scales are spread mostly through movement of nursery stock that is infected. Scales rarely spread from plant to plant unless the plant branches are in contact. The eggs hatch into young small scales called "crawlers" which emerge from the protective shell. Short range spreading takes place as crawlers search out places to settle and feed."

Is Neem Oil an effective cheap alternative of Aza-Sol at a higher dosage since both has Azadiractin?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: AggrOnline on December 11, 2018, 12:22:04 PM

(https://i.postimg.cc/BtPdwL2G/IMG-20181211-090952.jpg) (https://postimg.cc/BtPdwL2G)

(https://i.postimg.cc/m19JcJTr/IMG-20181211-090954.jpg) (https://postimg.cc/m19JcJTr)

(https://i.postimg.cc/ygkwKW5c/IMG-20181211-091006.jpg) (https://postimg.cc/ygkwKW5c)

Can any help ID what this is on my young Nam Doc Mai seedling grown from seed ?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 11, 2018, 02:17:33 PM
If you are talking about a 70% hydrophobic neem oil product, as most brands of neem oil are, then it is the cheap by-product left over after the Azadirachtin has been extracted out to be sold separately.  Then this oil has some surfactant added to help it mix with water.

Whole Neem-Oil products, such as Dyna-Gro Plant Shine, or any brand of food-grade neem oil, do contain Azadirachtin in widely varying amounts (i.e., non-standardized).  Hard to mix with cool water.  Does have other useful compounds also.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 11, 2018, 02:21:33 PM
The large black spot crossing over the midrib and other veins is probably anthracnose.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: AggrOnline on December 11, 2018, 02:56:06 PM
The large black spot crossing over the midrib and other veins is probably anthracnose.

I also see patches of it on the main stem, which is still green as the seedling is only few months old, would generous amount of Neem and all season help combat anthracnose?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 11, 2018, 04:16:24 PM
If you use more Neem than directed on the label, you will probably kill the leaves.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DuaneC59 on December 17, 2018, 01:15:43 AM
Hi, I'm in Southern California and new to the forum.  I was seeking the forum's help with some leaf changes on a Fruit Punch mango that has been in the ground for about a month.  The mango is on a drip system and might have been over-watered.  The weather has been in the low 70s and night temps in the mid 40's.  The tree has full sun for about 7 hrs per day. I have posted some pix of the leaves and new growth.
Thanks for your help.

(https://i.postimg.cc/bD7GdvSm/1216181605a.jpg) (https://postimg.cc/bD7GdvSm)


(https://i.postimg.cc/5XrffRC3/1216181604a.jpg) (https://postimg.cc/5XrffRC3)

(https://i.postimg.cc/TKsD5xS5/1216181605b.jpg) (https://postimg.cc/TKsD5xS5)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 17, 2018, 08:30:40 AM
Was compost or fertilizer put in the planting hole?

Is the root crown buried with soil or mulch?

Excess water, especially during cold weather, as you indicated, can produce those symptoms in the second and third photos, especially if the above problems occurred.

A month after planting is the normal time to fertilize.   Look for fertilizer that has 10% or so of Sulfur, 1 or 2 % of Iron, similar amount of Manganese, 1/2% or better of Zinc.  The micronutrients can be less if chelated or Wolftrax.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DuaneC59 on December 18, 2018, 04:29:05 PM
No compost or fertilizer in planting hole.
Mulch is cleared from the crown.

I will cut the water way back and apply some Palm Gain: It meets the specs you posted.

Thanks Guanabanus.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on December 23, 2018, 05:06:54 PM
FLMikey,  the Calcium-Magnesium-Boron product is probably good.  The Bonide product is labeled for avocados, but not mangos.  The sprayer should work for a year or so, until the trees get bigger.

Thanks for your help Har!  I have some more questions please.

I'll choose Southern AG's Copper Fungicide instead as the label indicates it's for Mango use (https://images.homedepot-static.com/catalog/pdfImages/04/0428f02d-3863-44a4-957b-692ac31a4366.pdf (https://images.homedepot-static.com/catalog/pdfImages/04/0428f02d-3863-44a4-957b-692ac31a4366.pdf))

In this thread, (http://tropicalfruitforum.com/index.php?topic=13852.0 (http://tropicalfruitforum.com/index.php?topic=13852.0)), you mention wettable Sulfur can be added to the Copper.  I was thinking of using this Hi Yield wettable sulfur (https://www.groworganic.com/hiyield-wettable-sulfur-4-lb.html (https://www.groworganic.com/hiyield-wettable-sulfur-4-lb.html)).  Would I mix the up the Copper and Sulfur together, and when the pannicle is 2 inches spray the mixed solution on the whole tree (leaves & pannicle)?  I would continue this process until flowers are present, at which point, I would spray the flowers with the GrowScripts Calcium/Magnesium/Boron spray once and stop with the Copper & Sulfur?  The next phase would be waiting for the little green fruits to set, then I continue spraying the Copper and Sulfur mix monthly until harvest. 

Apologies for the beginner questions - but have never implemented a spraying regimen, and trying maximize the number of mango's from my few trees.  Thanks!!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: chad6159 on December 24, 2018, 10:33:26 PM
Hey guys, this mango tree was already in place when I bought my house, it was one of three mango trees.however, this tree has always had issues.  We cut it way back to just its main trunk a while ago and new growth is happening. However the new growth does not look very good. It was getting attacked by aphids so I was spraying it with neem oil. That seemed to take care of that issue. But the leaves are still deformed and are very splotchy. I have sprayed it twice with copper and that didn’t seem to help much, if at all. I thought maybe it was a nutritional issue so I gave it some fertilizer a couple months ago and epsom salt. No change so far... on some parts the new growth looks nice but then quickly turns splotchy. In other spots the new growth is all deformed from the start.. what do you guys think it is?

(https://i.postimg.cc/cvMTdwTW/DAE798-EE-C6-D2-4876-92-B8-7411-A9-FAB5-B6.jpg) (https://postimg.cc/cvMTdwTW)

(https://i.postimg.cc/LJMNdNtv/DBBB1-C96-3-ED3-4-A98-A210-BD73-D8181-DE3.jpg) (https://postimg.cc/LJMNdNtv)

This pic you can see the leaves are normal shaped but are starting to get splotchy.


(https://i.postimg.cc/YLWfZWjJ/5-ACFC934-9-E39-40-AA-852-E-43-A49809-E9-FA.jpg) (https://postimg.cc/YLWfZWjJ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Orkine on December 25, 2018, 02:23:05 PM
Had an accidental salt spill on one of my in pot mangos recently.
About a week or two ago, the plant which was close to my water softener accidentally got some salt pellets spilled on it (while adding salt to the backflush system).
I picked off all of the pellets even the partial pieces that I could see.
A week or two later I started seeing leaves on a very healthy grafted plant curl and turn brown.

I assume some of the salt, finer than I could see must have stayed both on the plant and got in the pot.  I have watters a couple of times in the last two weeks and it has rained a couple of times too.  I think its the salt.

Today I gave it a couple of very thorough soakings and let it drain, is this sufficient or should I be doing something else.  If it will help, I can take it out of the pot, wash it to bare root and repot.

It is a Taralay grafted to some unknown seedling.

 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dross99_si on December 26, 2018, 10:50:31 AM
Pickering pushed some new growth but leaves look deformed. Any ideas on the cause?
(https://i.postimg.cc/DJjYYw1s/09528808-89-B5-45-C9-B33-D-D815-A240-B8-C1.jpg) (https://postimg.cc/DJjYYw1s)

(https://i.postimg.cc/ykSrvBxg/4-A0-DC2-AB-7227-4-F6-A-8-F29-6-CED0-C25-BC5-C.jpg) (https://postimg.cc/ykSrvBxg)

(https://i.postimg.cc/w184rPRW/BE5-B3436-1946-49-F1-BAD8-09-F69-AC0-B67-E.jpg) (https://postimg.cc/w184rPRW)

(https://i.postimg.cc/Wtzyq0P7/ECACCCD9-E43-C-41-DB-BDBE-1-E0-FAEA485-A8.jpg) (https://postimg.cc/Wtzyq0P7)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on December 26, 2018, 11:52:41 AM
Pickering pushed some new growth but leaves look deformed. Any ideas on the cause?
(https://i.postimg.cc/DJjYYw1s/09528808-89-B5-45-C9-B33-D-D815-A240-B8-C1.jpg) (https://postimg.cc/DJjYYw1s)

(https://i.postimg.cc/ykSrvBxg/4-A0-DC2-AB-7227-4-F6-A-8-F29-6-CED0-C25-BC5-C.jpg) (https://postimg.cc/ykSrvBxg)

(https://i.postimg.cc/w184rPRW/BE5-B3436-1946-49-F1-BAD8-09-F69-AC0-B67-E.jpg) (https://postimg.cc/w184rPRW)

(https://i.postimg.cc/Wtzyq0P7/ECACCCD9-E43-C-41-DB-BDBE-1-E0-FAEA485-A8.jpg) (https://postimg.cc/Wtzyq0P7)

Mite/sucking insect damage; very typical for this time of year. In fact I’d go so far as to say it’s unusual to see in-afflicted growth at this point.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dross99_si on December 26, 2018, 12:14:16 PM
Thanks Alex! Anything I can do to remedy or help the situation?
Can't wait to drive down and visit you guys once season is in full swing  ;D
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on December 26, 2018, 07:03:30 PM
Thanks Alex! Anything I can do to remedy or help the situation?
Can't wait to drive down and visit you guys once season is in full swing  ;D

Horticultural oils usualy eliminate those types of pest relatively quickly. However, there is some tiny ant species which also appears to feed on the leaves (not tending aphids or anything.....actually feeding on the leaves) and oil sprays seem to be ineffective against these.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dross99_si on December 27, 2018, 06:11:55 AM
Thanks for the info!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Orkine on December 29, 2018, 05:51:50 PM
I dont know what I need to do to fix this.

These are grafts on a recently top-worked tree.
The grafts took but the growth is anemic at best.  The leaves are tiny and even when there has been a second flush it sits right on the first making it look more like a rose than a mango (see fourth and fifth picture).

Should I feed this plant Nitrogen, it needs to grow.
I have or can get fertilizer with minors if that is what this baby needs.

(https://thumb.ibb.co/msGyxU/IMG_20180920_191702934.jpg) (https://ibb.co/msGyxU) (https://thumb.ibb.co/dpK7rp/IMG_20180920_191710775.jpg) (https://ibb.co/dpK7rp) (https://thumb.ibb.co/cycGj9/IMG_20180920_191713165.jpg) (https://ibb.co/cycGj9) (https://thumb.ibb.co/ffRnrp/IMG_20180920_191716615_BURST000_COVER_TOP.jpg) (https://ibb.co/ffRnrp) (https://thumb.ibb.co/byCSrp/IMG_20180920_191719308.jpg) (https://ibb.co/byCSrp)


This is my most recent graft on the same stump and the first flush here look more normal.  The blue dots are from a recent spray of copper.

(https://thumb.ibb.co/b7T0Bp/IMG_20180920_191659491.jpg) (https://ibb.co/b7T0Bp)

In case it is relevant, I don't irrigate or fertilize my lawn - which comes right up next to the tree.  I use a mulching mower to the grass clipping return to the soil.


It has been 3 months since this post and the plant nooks no different.
I want this plant to come back and want to put it on some regime for next season.
I will take very specific suggestions.
So far, I plan on fertilizing, including with nitrogen, once the cold passes.
I will test the soil to confirm that calcium is needed.
I will keep the plant warm through the winter.

Anything else?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Frog Valley Farm on December 30, 2018, 06:33:50 AM
I dont know what I need to do to fix this.

These are grafts on a recently top-worked tree.
The grafts took but the growth is anemic at best.  The leaves are tiny and even when there has been a second flush it sits right on the first making it look more like a rose than a mango (see fourth and fifth picture).

Should I feed this plant Nitrogen, it needs to grow.
I have or can get fertilizer with minors if that is what this baby needs.

(https://thumb.ibb.co/msGyxU/IMG_20180920_191702934.jpg) (https://ibb.co/msGyxU) (https://thumb.ibb.co/dpK7rp/IMG_20180920_191710775.jpg) (https://ibb.co/dpK7rp) (https://thumb.ibb.co/cycGj9/IMG_20180920_191713165.jpg) (https://ibb.co/cycGj9) (https://thumb.ibb.co/ffRnrp/IMG_20180920_191716615_BURST000_COVER_TOP.jpg) (https://ibb.co/ffRnrp) (https://thumb.ibb.co/byCSrp/IMG_20180920_191719308.jpg) (https://ibb.co/byCSrp)


This is my most recent graft on the same stump and the first flush here look more normal.  The blue dots are from a recent spray of copper.

(https://thumb.ibb.co/b7T0Bp/IMG_20180920_191659491.jpg) (https://ibb.co/b7T0Bp)

In case it is relevant, I don't irrigate or fertilize my lawn - which comes right up next to the tree.  I use a mulching mower to the grass clipping return to the soil.


It has been 3 months since this post and the plant nooks no different.
I want this plant to come back and want to put it on some regime for next season.
I will take very specific suggestions.
So far, I plan on fertilizing, including with nitrogen, once the cold passes.
I will test the soil to confirm that calcium is needed.
I will keep the plant warm through the winter.

Anything else?

A constantly mowed lawn is an unfortunate environment for growing your Mango tree.  Your grass clippings are not enough to sustain the correct soil biology for growing trees, grass clippings are excellent for feeding bacteria but not for feeding the fungi in the rhizosphere. Roots in the ground (grass) are an excellent home for fungal dominant soil life, but consistently mowing grass compacts the soil, changes the ph and inhibits soil biology and plant growth.  If you cannot let your grass and weeds grow long then at least mulch a perimeter around the tree with wood chips and add some earthworm castings every other week, drench with em1 followed with an indigenous microorganism compost tea to kickstart the natural process of nutrient cycling which will feed soil life, prompt plant growth and promote health.  Of course if your feeding with plant soluble fertilizers this wont work.  Good luck.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on January 03, 2019, 09:34:08 AM
It has been 3 months since this post and the plant nooks no different.
I want this plant to come back and want to put it on some regime for next season.
I will take very specific suggestions.
So far, I plan on fertilizing, including with nitrogen, once the cold passes.
I will test the soil to confirm that calcium is needed.
I will keep the plant warm through the winter.

Anything else?

Highly recommend Keyplex 350DP as a spray and/or soil drench.  If you do a foliar spray be sure to add a non-ionic surfactant to the mix.  Works wonders and is a Florida product.  Find a rep.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on January 03, 2019, 09:37:22 AM
Of course if your feeding with plant soluble fertilizers this wont work.  Good luck.

Sure it will.  Soluble fertilizers are a big boost to microbial health/production in the soil.  Just ask our commercial avocado guru Carlos.  He did a bonafide scientific study on the subject and busted that "organic" myth once and for all.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Frog Valley Farm on January 03, 2019, 12:38:40 PM
Of course if your feeding with plant soluble fertilizers this wont work.  Good luck.

Sure it will.  Soluble fertilizers are a big boost to microbial health/production in the soil.  Just ask our commercial avocado guru Carlos.  He did a bonafide scientific study on the subject and busted that "organic" myth once and for all.

Sure you can use soluble fertilizers but when you do this it affects the entire natural nutrient cycling process, specifically by starving the endophytic mychorizal fungi in the rhizospere.  Mychorizal fungi can excrete substances that will fight disease ward off insect herbivores and excrete plant growth hormones along with numerous other plant beneficial processes.  Most people are aware that plants fed soluble fertilizer are prone to disease and insect attack. This is not myth, it is scientifically proven.

https://www.rootrescue.com/site/mycorrhizal-science (https://www.rootrescue.com/site/mycorrhizal-science)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on January 03, 2019, 03:54:45 PM
My Alphonso has a resident grasshopper, I see it on the branch everyday rain or shine. That spot was used to be occupied by a praying mantis before the grasshopper took over. I haven't seen any visible damages to the trunk, branches or any leaves. Wondering why it choose this Alphonso? I have a larger Alphonso in 15 gallon pot.


(https://i.postimg.cc/YLxWmCsq/IMG-0368.jpg) (https://postimg.cc/YLxWmCsq)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on January 04, 2019, 11:34:07 AM
Of course if your feeding with plant soluble fertilizers this wont work.  Good luck.

Sure it will.  Soluble fertilizers are a big boost to microbial health/production in the soil.  Just ask our commercial avocado guru Carlos.  He did a bonafide scientific study on the subject and busted that "organic" myth once and for all.

Sure you can use soluble fertilizers but when you do this it affects the entire natural nutrient cycling process, specifically by starving the endophytic mychorizal fungi in the rhizospere.  Mychorizal fungi can excrete substances that will fight disease ward off insect herbivores and excrete plant growth hormones along with numerous other plant beneficial processes.  Most people are aware that plants fed soluble fertilizer are prone to disease and insect attack. This is not myth, it is scientifically proven.

https://www.rootrescue.com/site/mycorrhizal-science (https://www.rootrescue.com/site/mycorrhizal-science)

I have a 20 acre farm and have literally planted 10,000 trees (fruit, nut, shade, olives, evergreens, etc.) by hand including maintaining a large productive greenhouse of tropical fruit trees and a vineyard.  EVERY one of those plantings were treated with a myco fungi stuff.   MycoApply Soluble Maxx (ecto and endo) was my go to.  Lots of N foods too - I am a N freak when comes to plant foods also applying a Polyon 18-4-9 with micros when I do new plants.  It works.  I am not plaqued with insects or disease doing conventional farming.  That's another myth.

My go to now is VAM.   

(https://i.postimg.cc/PPqtF3rp/VAM.jpg) (https://postimg.cc/PPqtF3rp)

(https://i.postimg.cc/VdJxC3kR/Polyonsend.jpg) (https://postimg.cc/VdJxC3kR)

(https://i.postimg.cc/v127fSBr/Wide-Angle-Trees.jpg) (https://postimg.cc/v127fSBr)

(https://i.postimg.cc/BPT1Yhqw/Tannat-Harvest-Aug19.jpg) (https://postimg.cc/BPT1Yhqw)

No offense man but please don't preach to me about the value of "organics" and all that other "natural" crap or I'll take out my glyphosate pen and let ya have it.  ;D

Here's a partial view of 14 acres of legumes/green manures on my farm - yellow sweet clover, hairy vetch, elbon rye.
 
(https://i.postimg.cc/2qHpvmh0/Snoball-House-Rye.jpg) (https://postimg.cc/2qHpvmh0)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Frog Valley Farm on January 04, 2019, 12:21:08 PM
Did you see the study that show plants that cycle their own nutrients have a higher brix reading than plants fed soluble fertilizers?  LOL
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on January 04, 2019, 02:38:26 PM
Did you see the study that show plants that cycle their own nutrients have a higher brix reading than plants fed soluble fertilizers?  LOL

Ask the Dutch and their mega greenhouses regarding hydroponic gardening.........  https://www.nationalgeographic.com/magazine/2017/09/holland-agriculture-sustainable-farming/ (https://www.nationalgeographic.com/magazine/2017/09/holland-agriculture-sustainable-farming/)

LOL
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on January 04, 2019, 02:52:36 PM
Gonna have to agree with Mark in Texas.

To get higher brix, ensure proper level of calcium.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Frog Valley Farm on January 04, 2019, 03:05:16 PM
Mark I am so glad that you have such success with your farm, the pictures show the hard work you have done and your farm looks incredible.

Do to concerns with my health and concerns about the agricultural runoff affecting so many things detrimentally here in florida, I chose to farm another way.  I use a Regenerative farming system that is closed loop. All fertility and pest and disease management is created within my farm. Fortunately I don’t have any issues at the time.  It is also helpful that I can get a premium for what I grow.  Unfortunately there is zero information available on farming tropical fruits this way in Florida, zero.  I would like to provide a little bit of information via this forum to like minded people.  I am truly sorry if this bothers, please believe me when I say that it is not my intention.

Please allow me to offer my experience, hassle free, to other like minded growers.  Again I am truly sorry if I’ve offended you.


Thank you
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Frog Valley Farm on January 04, 2019, 04:10:05 PM
Gonna have to agree with Mark in Texas.

To get higher brix, ensure proper level of calcium.

Yes thankfully calcium is one thing Florida has plenty of, at least at my farm. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on January 04, 2019, 05:32:52 PM
That's not necessarily true though. For the folks living in Homestead, there is obviously no need to provide supplemental calcium. However, individuals growing on sand or compost can benefit from supplemental calcium. Also, providing supplemental potassium (regardless of source, be it organic or conventional) can cause ca deficiency.

Gonna have to agree with Mark in Texas.

To get higher brix, ensure proper level of calcium.

Yes thankfully calcium is one thing Florida has plenty of, at least at my farm.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: sammmy on January 04, 2019, 08:30:28 PM
There is no evidence that organic practices improve the quality of produce. 

Well, except for the type of junk-science propaganda seen below - probably funded by George Soros and the granola crowd.

https://www.ncbi.nlm.nih.gov/pubmed/20359265 (https://www.ncbi.nlm.nih.gov/pubmed/20359265)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on January 05, 2019, 07:30:33 AM
There is no evidence that organic practices improve the quality of produce. 

Well, except for the type of junk-science propaganda seen below - probably funded by George Soros and the granola crowd.

https://www.ncbi.nlm.nih.gov/pubmed/20359265 (https://www.ncbi.nlm.nih.gov/pubmed/20359265)

This whole "organic", "natural", "gluten free", "non-GMO" stuff is nothing more than a racket.  I checked out our new Natural Grocers store the other day.  The produce, labels propaganda and outrageous prices was laughable.  I wouldn't buy that stuff if you paid me.  Give me conventional grown produce and meats any day. 

Frog Valley Farm, no offense taken.  Was just yanking your chain.  I really don't care how you farm.  What you've written suggests you're not infringing on anyone's rights or health and are a good steward of environment.  That's what counts.

Back to mangos......

I won't mention any names but Florida has a few VERY large mango commercial farmers selling fine looking and delicious mangos that are protected from disease problems via the use of copper fungicides and chemicals that I even use on the vineyard such as Pristine.   One fine pesticide is imidacloprid.  It is extremely cost efficient, effective, and safe if you follow the label directions.  This $26 bag would take care of all the farmers around Naples for a year.
https://www.amazon.com/Adonis-contains-Imidacloprid-2-25-ADONIS/dp/B0195V1MD8/ref=sr_1_3?ie=UTF8&qid=1546691129&sr=8-3&keywords=adonis+75+wsp (https://www.amazon.com/Adonis-contains-Imidacloprid-2-25-ADONIS/dp/B0195V1MD8/ref=sr_1_3?ie=UTF8&qid=1546691129&sr=8-3&keywords=adonis+75+wsp)

And for mites in all stages of developments and white fly control you can't beat Forbid 4F.  It is not a poison FWIW.  Then there's my go-to - Bonide All Season Horticultural Spray.  Be sure to shake the bottle before pouring.  Most forget to and that includes me.  It has an emulsifiying agent that is very important to incorporate into your mix.  I use it on citrus, mangos, annonas, avocados.
 
 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on January 05, 2019, 07:31:43 AM
Last but not least, do a tissue analysis to see where you stand regarding plant nutrition.  I read my plants and correct accordingly.  Like this Reed avocado which grew from a frozen stump last January to 10' X 10' in 7 mos.  Food?  Polyon with rainwater, mulched heavily.  Nothing else - no sprays.

(https://i.postimg.cc/qN3ZkCpX/John-Lennonsshades-2.jpg) (https://postimg.cc/qN3ZkCpX)

(https://i.postimg.cc/7JSfHVQr/Reed-Oct28-2.jpg) (https://postimg.cc/7JSfHVQr)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on January 05, 2019, 09:50:22 AM
I use Pristine on my mangoes as well, in a rotation with a couple of others. It's on the EPA's "Reduced Risk" list. Good stuff.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 07, 2019, 10:38:33 PM
Hey guys, this mango tree was already in place when I bought my house, it was one of three mango trees.however, this tree has always had issues.  We cut it way back to just its main trunk a while ago and new growth is happening. However the new growth does not look very good. It was getting attacked by aphids so I was spraying it with neem oil. That seemed to take care of that issue. But the leaves are still deformed and are very splotchy. I have sprayed it twice with copper and that didn’t seem to help much, if at all. I thought maybe it was a nutritional issue so I gave it some fertilizer a couple months ago and epsom salt. No change so far... on some parts the new growth looks nice but then quickly turns splotchy. In other spots the new growth is all deformed from the start.. what do you guys think it is?

(https://i.postimg.cc/cvMTdwTW/DAE798-EE-C6-D2-4876-92-B8-7411-A9-FAB5-B6.jpg) (https://postimg.cc/cvMTdwTW)

(https://i.postimg.cc/LJMNdNtv/DBBB1-C96-3-ED3-4-A98-A210-BD73-D8181-DE3.jpg) (https://postimg.cc/LJMNdNtv)

Check with magnification for thrips or other tiny pests, or powdery mildew.

This pic you can see the leaves are normal shaped but are starting to get splotchy.


(https://i.postimg.cc/YLWfZWjJ/5-ACFC934-9-E39-40-AA-852-E-43-A49809-E9-FA.jpg) (https://postimg.cc/YLWfZWjJ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 07, 2019, 10:48:05 PM
FLMikey,  the Calcium-Magnesium-Boron product is probably good.  The Bonide product is labeled for avocados, but not mangos.  The sprayer should work for a year or so, until the trees get bigger.

Thanks for your help Har!  I have some more questions please.

I'll choose Southern AG's Copper Fungicide instead as the label indicates it's for Mango use (https://images.homedepot-static.com/catalog/pdfImages/04/0428f02d-3863-44a4-957b-692ac31a4366.pdf (https://images.homedepot-static.com/catalog/pdfImages/04/0428f02d-3863-44a4-957b-692ac31a4366.pdf))

Southern Ag Liquid Copper does not contain Copper Soap.  I do not advocate mixing other Copper compounds with elemental Sulfur.

In this thread, (http://tropicalfruitforum.com/index.php?topic=13852.0 (http://tropicalfruitforum.com/index.php?topic=13852.0)), you mention wettable Sulfur can be added to the Copper.  I was thinking of using this Hi Yield wettable sulfur (https://www.groworganic.com/hiyield-wettable-sulfur-4-lb.html (https://www.groworganic.com/hiyield-wettable-sulfur-4-lb.html)).  Would I mix the up the Copper and Sulfur together, and when the pannicle is 2 inches spray the mixed solution on the whole tree (leaves & pannicle)?  I would continue this process until flowers are present, at which point, I would spray the flowers with the GrowScripts Calcium/Magnesium/Boron spray once and stop with the Copper & Sulfur?  The next phase would be waiting for the little green fruits to set, then I continue spraying the Copper and Sulfur mix monthly until harvest. 

Apologies for the beginner questions - but have never implemented a spraying regimen, and trying maximize the number of mango's from my few trees.  Thanks!!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 07, 2019, 11:01:20 PM
Copper Soap can be mixed with elemental Sulfur,
and,
Cuprous Oxide ("red copper") can be mixed with elemental Sulfur.  (These are active ingredients, not brand names.) 

Most other Copper compounds become dangerous to the plants if mixed with elemental Sulfur, or with any other seriously acidic mix.

Unfortunately "liquid copper" is used for more than one copper compound, so you need to read the fine print.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on January 11, 2019, 09:01:51 AM
Copper Soap can be mixed with elemental Sulfur,
and,
Cuprous Oxide ("red copper") can be mixed with elemental Sulfur.  (These are active ingredients, not brand names.) 

Most other Copper compounds become dangerous to the plants if mixed with elemental Sulfur, or with any other seriously acidic mix.

Unfortunately "liquid copper" is used for more than one copper compound, so you need to read the fine print.

Thanks again for the really helpful info Har!  I linked to this product previously https://www.bonide.com/assets/Products/Labels/l811.pdf (https://www.bonide.com/assets/Products/Labels/l811.pdf) as it has Copper Octanoate (Copper Soap) as the active ingredient.  The label doesn't say it's for use on mango's but does say it's for use on Stone Fruit, and mango is a stonefruit.  Do you think it's safe to mix with the Hi Yield Wettable Sulfur (https://www.groworganic.com/hiyield-wettable-sulfur-4-lb.html (https://www.groworganic.com/hiyield-wettable-sulfur-4-lb.html))?  Or do I just stick with Bonide product if you deem it's safe?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on January 11, 2019, 09:39:11 PM
I'm thinking of using an Organic Spraying regimen rotation (never done so previously) and looking for feedback to treat potentially Powdery Mildew & Anthracnose.  I'm contemplating rotating the following 3 products on a 2 week cycle -
1)  Organocide Plant Doctor Systemic Fungicide (http://www.yourplantdoctor.com/organocide-plant-doctor-systemic-fungicide/ (http://www.yourplantdoctor.com/organocide-plant-doctor-systemic-fungicide/))
2)  Bonide Copper Fungicide Concentrate (https://www.bonide.com/products/garden-naturals/view/811/copper-fungicide-conc (https://www.bonide.com/products/garden-naturals/view/811/copper-fungicide-conc))
3)  Serenade Garden Disease Control Concentrate (https://www.bioadvanced.com/products/rose-flower-care/serenade-garden (https://www.bioadvanced.com/products/rose-flower-care/serenade-garden))

From what I found all 3 should be ok for Mango.  Organocide instructions explicitly state for mango use.  Bonide label states it's for stone fruit (mango is a stone fruit).  Serenade active ingredient is Bacillus Subtillus QST 713 and 1 paper indicates it's effective preventing mango disease (http://agris.fao.org/openagris/search.do?recordID=PH2007000479 (http://agris.fao.org/openagris/search.do?recordID=PH2007000479))

Does this sound like a good regimen to maximize mango yield?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 11, 2019, 10:26:55 PM
Other than the "stone fruit" definition, the rest looks good.  Stone Fruits are a sub-category of the Rose Family: Peaches, Plums, Apricots, Almonds, and per some botanists, Jujubes.

You aren't alone in trying to expand the definition to include any big seed--- I saw an actual product label claiming that Avocados are stone fruits.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on January 11, 2019, 11:36:36 PM
Is there a different Copper product you'd recommend over the Bonide one?  I'm thinking about this Monterey Liqui-Cop instead of the Bonide (http://www.montereylawngarden.com/product_information.aspx?242000p=38d342ec-490d-4a2b-8680-a5c80e030d41&240000p=0fcd062e-3250-4d03-9e74-3be36cab8eb4 (http://www.montereylawngarden.com/product_information.aspx?242000p=38d342ec-490d-4a2b-8680-a5c80e030d41&240000p=0fcd062e-3250-4d03-9e74-3be36cab8eb4)), and the label says approved for mango's, but it's using a Copper diammonia diacetate complex.  Label says to apply it in 30 day intervals which would work for me considering I'll be alternating with the other fungicides (should be around 40 days between applications for me). 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on January 12, 2019, 07:30:03 AM
Is there a different Copper product you'd recommend over the Bonide one?

I use both Phyton 35 and Magnabon, both excellent systemic coppers - copper sulfate pentahydrate.  OMRI certified for those that roll that way.  Control is unreal.  https://www.magnabon.com/research/cs-2005-disease-control/ (https://www.magnabon.com/research/cs-2005-disease-control/)
https://www.magnabon.com/product/magna-bon-cs-2005/ (https://www.magnabon.com/product/magna-bon-cs-2005/)

Pristine + Captan is hard to beat.  Here's a field trial on apples using all kinds of fungicides.  https://cpb-us-e1.wpmucdn.com/blogs.cornell.edu/dist/d/3767/files/2013/11/2013-HVL-Field-trial-data-compr-203ay9s.pdf (https://cpb-us-e1.wpmucdn.com/blogs.cornell.edu/dist/d/3767/files/2013/11/2013-HVL-Field-trial-data-compr-203ay9s.pdf)

Like all fruit/grapes you need to focus your sprays come the first opening of the flowers, mid blooming, late blooming and then whenever you have disease pressures once the fruit sets.  Take grapes for example - if I don't time my sprays beginning with blooming and then the last (main) application being just before the clusters "close" (grapes expand such that the clusters get tight), I'll be shit outta luck come harvest.  Usually doesn't happen.  ;D

(https://i.postimg.cc/RWLpKpHw/Mouv-Aug8-4.jpg) (https://postimg.cc/RWLpKpHw)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on January 12, 2019, 01:09:40 PM
Thanks for your input Mark!  I was interested in Pristine, but it's way too expensive for me.  I only have 3 trees, so it's hard to justify $400 for 7 lbs.  Even Phyton 35 is expensive for me (that's about $90 for 1 liter).  I was even considering Camelot O,and Nordox, but those are expensive too.  I guess the good stuff is geared towards the more commercial market.

I'll be happy reducing diseases pressures as much as possible at a reasonable price with the understanding I may be sacrificing some of my mango yield.  Hopefully, the regimen I described earlier will work pretty well though...fingers crossed.

I'm starting the Serenade today (combining with Coco Wet spreader) as I have a couple spikes on my trees (no flowers).  Then in 2 weeks will move on to the Copper (Liqui-Cop), then 2 weeks later follow it up with the Plant Doctor.  However, if I see flowers open, I'm planning on skipping a fungicide treatment that week and use Growscripts (https://www.growscripts.com/shop/bloomtime-formula-calcium-magnesium-boron-blend/ (https://www.growscripts.com/shop/bloomtime-formula-calcium-magnesium-boron-blend/)) Calcium Magnesium Boron Blend.  Then the following week start the fungicide regimen again.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 12, 2019, 07:03:04 PM
That Monterrey Liqui-Cop should work fine, at the lowest concentration recommended, when on flower spikes.

The Southern Ag Liquid Copper sold here in Home Depot is roughly the same.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on January 12, 2019, 10:20:15 PM
Thanks Har! Hopefully we get some more dry and cooler temps over next several weeks!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on January 13, 2019, 08:24:14 AM
I'm starting the Serenade today (combining with Coco Wet spreader) as I have a couple spikes on my trees (no flowers).

For what you're paying and getting in a pint for that coco-wet you can get a gallon of the same non-ionic surfactant at a feed store for less cost.   

Magnabon CS2005 is cheap and like Pristine it goes a long way and has an excellent shelf life.  I split a jug of Pristine with a friend 10 years ago and am still using it.

Stay squeaky clean.    ;)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: skhan on January 14, 2019, 03:34:42 PM
Can someone help me with this:
Front of leaves
(https://farm8.staticflickr.com/7820/46663909542_e086455e2a_n.jpg) (https://flic.kr/p/2e6wJyw)
Back of leaves
(https://farm5.staticflickr.com/4902/45991866154_d4b91edbc6_n.jpg) (https://flic.kr/p/2d59kty)


A Valencia Pride planted 15ft away looks fine.
(https://farm8.staticflickr.com/7843/45991866104_56b523fb76_n.jpg) (https://flic.kr/p/2d59ksG)

Both receive 8-3-9 w/ micros during growing season (although, not as much as they should)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on January 14, 2019, 03:53:07 PM
It's sending you a message: "Feed me!" I might switch over to a slow release mix like Har's 0-3-16 plus some sulfur to lower ph and perhaps drenches with iron chelate. Probably going to be deficient in copper and manganese as well.

The vp could be in a better area of soil. Or it could be better at nutrient absoprtion due to cultivar. Or, maybe the chlorotic tree was pruned more? (the leaves hold nutrients). Or maybe the chlorotic tree is older (and has depleted the little bit of soil nutrition was there to begin with). Etc.

Can someone help me with this:
Front of leaves
(https://farm8.staticflickr.com/7820/46663909542_e086455e2a_n.jpg) (https://flic.kr/p/2e6wJyw)
Back of leaves
(https://farm5.staticflickr.com/4902/45991866154_d4b91edbc6_n.jpg) (https://flic.kr/p/2d59kty)


A Valencia Pride planted 15ft away looks fine.
(https://farm8.staticflickr.com/7843/45991866104_56b523fb76_n.jpg) (https://flic.kr/p/2d59ksG)

Both receive 8-3-9 w/ micros during growing season (although, not as much as they should)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on January 19, 2019, 03:05:07 PM
I'm not sure if this is Powdery Mildew, or some other insect (spider?) that's making this "film" on my Venus mango tree.  Is this anything to be concerned over?


(https://i.postimg.cc/qtYHMTwH/20190119-105133.jpg) (https://postimg.cc/qtYHMTwH)

(https://i.postimg.cc/tsSL2jLn/20190119-105201.jpg) (https://postimg.cc/tsSL2jLn)

(https://i.postimg.cc/VJLxq6Hc/20190119-105221.jpg) (https://postimg.cc/VJLxq6Hc)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 19, 2019, 09:04:50 PM
Looks to be Spider Mites.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on January 20, 2019, 11:04:03 AM
Looks to be Spider Mites.

Thanks for the diagnosis Har!  I'm looking up appropriate treatment options.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on January 20, 2019, 07:52:45 PM
Any idea why this Glenn mango has stayed the same after being 2 months in the ground? It was in similar condition in its original 15 gallon pot. Since it was in ground it showed no growth at all, I have applied Osmocte and drenched it with fish and kelp emulsions. Planted at the same time other mangoes and lychees flushed several times. Only difference with this tree is I used Palm and Cactus mix instead of mulch for better drainage. Does it have a chance to regain health?



(https://i.postimg.cc/p9qCTfzg/IMG-0479.jpg) (https://postimg.cc/p9qCTfzg)


(https://i.postimg.cc/pmBYGfGp/IMG-0480.jpg) (https://postimg.cc/pmBYGfGp)


(https://i.postimg.cc/bscxqC4Z/IMG-0481.jpg) (https://postimg.cc/bscxqC4Z)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: spaugh on January 20, 2019, 08:27:00 PM
Any idea why this Glenn mango has stayed the same after being 2 months in the ground? It was in similar condition in its original 15 gallon pot. Since it was in ground it showed no growth at all, I have applied Osmocte and drenched it with fish and kelp emulsions. Planted at the same time other mangoes and lychees flushed several times. Only difference with this tree is I used Palm and Cactus mix instead of mulch for better drainage. Does it have a chance to regain health?



(https://i.postimg.cc/p9qCTfzg/IMG-0479.jpg) (https://postimg.cc/p9qCTfzg)


(https://i.postimg.cc/pmBYGfGp/IMG-0480.jpg) (https://postimg.cc/pmBYGfGp)


(https://i.postimg.cc/bscxqC4Z/IMG-0481.jpg) (https://postimg.cc/bscxqC4Z)

If it has only been in the ground for 2 months it just needs more tkme and some warm weather.  Probably won't get much action until around August.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on January 20, 2019, 08:41:33 PM
Any idea why this Glenn mango has stayed the same after being 2 months in the ground? It was in similar condition in its original 15 gallon pot. Since it was in ground it showed no growth at all, I have applied Osmocte and drenched it with fish and kelp emulsions. Planted at the same time other mangoes and lychees flushed several times. Only difference with this tree is I used Palm and Cactus mix instead of mulch for better drainage. Does it have a chance to regain health?


If it has only been in the ground for 2 months it just needs more tkme and some warm weather.  Probably won't get much action until around August.

Good to hear, I was afraid that it is slowly dying.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 20, 2019, 09:31:22 PM
It is supposed to grow roots for a while, first, before it grows more top.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dross99_si on January 21, 2019, 09:08:42 AM
Little bit of leaf tip burn on our potted Pickering, Haden and Coconut Cream. Definitely hard to surmise what may be the cause. Wind, water logged, salts, chlorine, over fert, nutrient deficiency, etc..
We use Osmocote plus and a little foliar feed now & then. Once in a while water from the hose. I did order the Boogie Blue Plus for a little peace of mind when having to hose water.
Not sure if I should just do nothing and see how it plays out or run the risk of overthinking and wind up doing too much and possibly make things worse.
I thought about adding some gypsum to remedy any salt build up, add a little calcium and possibly aid in drainage.
So many variables when container growing. Wish I could just put them in the ground. I feel like it would make life easier.

(https://i.postimg.cc/1fXJwrLK/2-C29-CFB4-4-E90-4-B89-AFBD-2-AE4360103-E1.jpg) (https://postimg.cc/1fXJwrLK)

(https://i.postimg.cc/XZf84HCn/35419-CC9-2-D27-49-FF-9-F99-ADA903-F424-A2.jpg) (https://postimg.cc/XZf84HCn)

(https://i.postimg.cc/Ff5pt51P/41630-BD7-574-B-4050-95-A2-458-B4-B5-A773-A.jpg) (https://postimg.cc/Ff5pt51P)

(https://i.postimg.cc/CRf76LMB/76-B5-F3-A0-BBDB-4-C3-C-A159-A216-B75113-C2.jpg) (https://postimg.cc/CRf76LMB)

(https://i.postimg.cc/QB9bwNXK/CF37-A957-B6-F4-456-D-A47-E-D9-AE806-A158-D.jpg) (https://postimg.cc/QB9bwNXK)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Garoh on January 21, 2019, 09:49:53 AM
hello everybody
Im in kuwait and 5 days ago we had a cold windy weather . One of my mango trees was positioned in a bad windy place it was planted one month and a half ago . It has a huge flowering and good health until we had that cold windy weather 5 days ago as i mentioned . Since that the flowers started to die and get dry . See the pics . Anyone has an idea about this ??

(https://i.postimg.cc/06RKf7y3/3-B702-F78-9-A22-4-CE3-8363-2234919-ADDFD.jpg) (https://postimg.cc/06RKf7y3)

(https://i.postimg.cc/w7rm1C89/71040-FBC-89-B2-44-FB-B5-AC-D425-EE955-B4-D.jpg) (https://postimg.cc/w7rm1C89)

(https://i.postimg.cc/r0q06cWN/DBB4203-D-CF3-F-4905-83-BC-A7-FEA6222-BA4.jpg) (https://postimg.cc/r0q06cWN)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 21, 2019, 04:53:19 PM
Both of the above appear to have powdery mildew, the most common mango malady during cool dry weather.

Fertilizing with Gypsum / Calcium Sulfate is usually also a good idea.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dross99_si on January 21, 2019, 11:18:43 PM
Both of the above appear to have powdery mildew, the most common mango malady during cool dry weather.

Fertilizing with Gypsum / Calcium Sulfate is usually also a good idea.

Thank you Har!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dross99_si on January 22, 2019, 07:35:39 AM
Little bit of leaf tip burn on our potted Pickering, Haden and Coconut Cream. Definitely hard to surmise what may be the cause. Wind, water logged, salts, chlorine, over fert, nutrient deficiency, etc..
We use Osmocote plus and a little foliar feed now & then. Once in a while water from the hose. I did order the Boogie Blue Plus for a little peace of mind when having to hose water.
Not sure if I should just do nothing and see how it plays out or run the risk of overthinking and wind up doing too much and possibly make things worse.
I thought about adding some gypsum to remedy any salt build up, add a little calcium and possibly aid in drainage.
So many variables when container growing. Wish I could just put them in the ground. I feel like it would make life easier.

(https://i.postimg.cc/1fXJwrLK/2-C29-CFB4-4-E90-4-B89-AFBD-2-AE4360103-E1.jpg) (https://postimg.cc/1fXJwrLK)

(https://i.postimg.cc/XZf84HCn/35419-CC9-2-D27-49-FF-9-F99-ADA903-F424-A2.jpg) (https://postimg.cc/XZf84HCn)

(https://i.postimg.cc/Ff5pt51P/41630-BD7-574-B-4050-95-A2-458-B4-B5-A773-A.jpg) (https://postimg.cc/Ff5pt51P)

(https://i.postimg.cc/CRf76LMB/76-B5-F3-A0-BBDB-4-C3-C-A159-A216-B75113-C2.jpg) (https://postimg.cc/CRf76LMB)

(https://i.postimg.cc/QB9bwNXK/CF37-A957-B6-F4-456-D-A47-E-D9-AE806-A158-D.jpg) (https://postimg.cc/QB9bwNXK)


Unless it's from the homemade fungicidal spray I made and applied last week using water, vegetable oil and baking soda. Could that have caused the tips turn brown? Like a sunburn from excess oil residue maybe? I did apply the spray late at night...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 22, 2019, 12:07:25 PM
Possible.  Sodium in excess?  I haven't tried that mix.  How much baking soda per gallon?  How much oil?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dross99_si on January 22, 2019, 12:38:14 PM
Possible.  Sodium in excess?  I haven't tried that mix.  How much baking soda per gallon?  How much oil?

Hi Har,
In one gallon of water I mixed: 2 Tbsp baking soda, 2 Tbsp vegetable oil and just enough eco friendly dish soap to emulsify the oil when the mixture was agitated. Perhaps I used too much baking soda and the excessive amount of sodium burned the leaf tips  >:( Next time I will only use 1 Tbsp baking soda.
Also, next time I was considering using neem oil instead of vegetable oil.
I'm trying everything I can to keep this powdery mildew at bay.
I may try a copper spray eventually, but the toxicity from excess use has me reluctant to do so.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 22, 2019, 01:07:02 PM
The amount of oil was correct;  I'm not sure about the baking soda, but that sounds amount sounds reasonable.

Neem is also a vegetable oil.  Food-grade whole neem oil is available.

Excess accumulation of Copper is highly unlikely if you alternate sprays and follow today's careful labeling.  The main exception is when growing on soils where groves used to be subjected to "more-is-better" style, promoted by product sellers who wanted to move more product.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dross99_si on January 22, 2019, 02:16:42 PM
Thanks Har. Always a pleasure to get a response from you.
In the future I will try decreasing the amount of baking soda to 1 Tbsp/gal.
I picked up some Southern Ag Neem oil from the local store. Hopefully that brand is ok.
I appreciate the info on the copper spray as well.

-Andy
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Garoh on January 23, 2019, 04:57:27 AM
hello everybody
Im in kuwait and 5 days ago we had a cold windy weather . One of my mango trees was positioned in a bad windy place it was planted one month and a half ago . It has a huge flowering and good health until we had that cold windy weather 5 days ago as i mentioned . Since that the flowers started to die and get dry . See the pics . Anyone has an idea about this ??

(https://i.postimg.cc/06RKf7y3/3-B702-F78-9-A22-4-CE3-8363-2234919-ADDFD.jpg) (https://postimg.cc/06RKf7y3)

(https://i.postimg.cc/w7rm1C89/71040-FBC-89-B2-44-FB-B5-AC-D425-EE955-B4-D.jpg) (https://postimg.cc/w7rm1C89)

(https://i.postimg.cc/r0q06cWN/DBB4203-D-CF3-F-4905-83-BC-A7-FEA6222-BA4.jpg) (https://postimg.cc/r0q06cWN)

Please any idea about this problem ?

My tree looks like it is getting dried everyday . looks like there is a problem with roots because of the stronge wind
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 23, 2019, 10:23:13 AM
Powdery mildew.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Garoh on January 23, 2019, 06:40:10 PM
Powdery mildew.

Thanks for the reply Har

But i dont see any thing about Powdery mildew on my tree . What is going on now is flowers withering with no sing of Powdery mildew at all . Is this another kind of Powdery mildew?

And what the solution ?

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Gambit on January 23, 2019, 06:57:46 PM
"But i dont see any thing about Powdery mildew on my tree . What is going on now is flowers withering with no sing of Powdery mildew at all . Is this another kind of Powdery mildew?"


Looks like cold damage, especially on the highest blooms. My tree showed the same damage after a short freeze last January in St. Pete.
(https://i.postimg.cc/FftLyYnp/Cold-damage.jpg) (https://postimg.cc/FftLyYnp)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Garoh on January 23, 2019, 11:09:35 PM
"But i dont see any thing about Powdery mildew on my tree . What is going on now is flowers withering with no sing of Powdery mildew at all . Is this another kind of Powdery mildew?"


Looks like cold damage, especially on the highest blooms. My tree showed the same damage after a short freeze last January in St. Pete.
(https://i.postimg.cc/FftLyYnp/Cold-damage.jpg) (https://postimg.cc/FftLyYnp)

exactly that was what happened to my tree it looks just like the pic u attached  thanks alot Gambit .
But did u lose all the blooms ? Did try to do something to save your tree ?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 24, 2019, 08:46:48 AM
Good picture Gambit.

The browned leaves and stem are frost damaged, and the drooping of the bloom spikes is presumably from cold stress.  One can also see Anthracnose.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Gambit on January 24, 2019, 05:42:45 PM
Good picture Gambit.

The browned leaves and stem are frost damaged, and the drooping of the bloom spikes is presumably from cold stress.  One can also see Anthracnose.

Oh yes, drooping blooms were from the freeze. And all my mango trees show signs of Anthracnose. We don't do much as long as the trees produce a few fruits each season. So far, the trees have come through for us pretty well... despite intermittent fungicide application.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Gambit on January 24, 2019, 05:52:24 PM
"But i dont see any thing about Powdery mildew on my tree . What is going on now is flowers withering with no sing of Powdery mildew at all . Is this another kind of Powdery mildew?"


Looks like cold damage, especially on the highest blooms. My tree showed the same damage after a short freeze last January in St. Pete.
(https://i.postimg.cc/FftLyYnp/Cold-damage.jpg) (https://postimg.cc/FftLyYnp)

exactly that was what happened to my tree it looks just like the pic u attached  thanks alot Gambit .
But did u lose all the blooms ? Did try to do something to save your tree ?

We waited for a couple of weeks and then pruned off the dead branches. The tree bounced back nicely and is currently flowering. We had a Venus mango (smaller tree) that froze to the roots at the same time. Your tree looks like it will recover. I would not prune just yet. Wait at least a couple of weeks to see the resultant damage before you prune. In the meantime, water the tree and give it some micros.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FMfruitforest on January 24, 2019, 06:27:44 PM
Valencia P. has had problems putting on new growth and the new growth it has put on looks deformed. Im curious as to what the cause is
(https://i.postimg.cc/34hW04rG/mangoissue1.jpg) (https://postimg.cc/34hW04rG)

(https://i.postimg.cc/V0L64xCL/mangoissue2.jpg) (https://postimg.cc/V0L64xCL)

(https://i.postimg.cc/mtnDN62B/mangoissue3.jpg) (https://postimg.cc/mtnDN62B)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 24, 2019, 09:15:42 PM
Is the soil by the tree often water-logged / mucky?

Is the tree un-stable / tippy?

The root-stock looks non-standard:  thick and knarly.

Some of the leaves look deficient in Magnesium, Zinc, Manganese, and Copper.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Frog Valley Farm on January 25, 2019, 05:37:58 AM
It could also be phosphorous fixation which can happen in clay soils, soils with low organic matter.  Can be fixed with carbon additions. Calcium carbonate which is everywhere in Florida is a cause so is adding calcium. Shows as zinc, mg deficiency. OM will fix ph and the phosphorous fixation.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Garoh on January 25, 2019, 06:57:33 AM
"But i dont see any thing about Powdery mildew on my tree . What is going on now is flowers withering with no sing of Powdery mildew at all . Is this another kind of Powdery mildew?"


Looks like cold damage, especially on the highest blooms. My tree showed the same damage after a short freeze last January in St. Pete.
(https://i.postimg.cc/FftLyYnp/Cold-damage.jpg) (https://postimg.cc/FftLyYnp)

exactly that was what happened to my tree it looks just like the pic u attached  thanks alot Gambit .
But did u lose all the blooms ? Did try to do something to save your tree ?

We waited for a couple of weeks and then pruned off the dead branches. The tree bounced back nicely and is currently flowering. We had a Venus mango (smaller tree) that froze to the roots at the same time. Your tree looks like it will recover. I would not prune just yet. Wait at least a couple of weeks to see the resultant damage before you prune. In the meantime, water the tree and give it some micros.




Thank you very much Gambit for the comprehensive and useful answer .
I already started to water the tree everyday and dave it micros and humic acid . It looks better now i hope it recover .
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on January 29, 2019, 09:39:03 AM
Is this powdery mildew on my carry tree?
I just sprayed it with sulfur, but left them in place until I get a positive I'd
Thanks in advance for your response!
(https://i.postimg.cc/3k8yKJbK/IMG-20190129-092624.jpg) (https://postimg.cc/3k8yKJbK)

(https://i.postimg.cc/wyyySf4L/IMG-20190129-092625.jpg) (https://postimg.cc/wyyySf4L)

(https://i.postimg.cc/cvFv6yVf/IMG-20190129-092642.jpg) (https://postimg.cc/cvFv6yVf)

(https://i.postimg.cc/1n26XhVv/IMG-20190129-092649.jpg) (https://postimg.cc/1n26XhVv)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on January 29, 2019, 11:21:19 AM
Doesn't look like it. Carrie is not generally prone to powdery mildew. Don't be surprised if you don't get a lot of fruit set on those flowers though. That's just how carrie does it. It sets few fruits per pannicle but rarely aborts any.

Carrie can get anthracnose, but I don't really see it in your pics.

Is this powdery mildew on my carry tree?
I just sprayed it with sulfur, but left them in place until I get a positive I'd
Thanks in advance for your response!
(https://i.postimg.cc/3k8yKJbK/IMG-20190129-092624.jpg) (https://postimg.cc/3k8yKJbK)

(https://i.postimg.cc/wyyySf4L/IMG-20190129-092625.jpg) (https://postimg.cc/wyyySf4L)

(https://i.postimg.cc/cvFv6yVf/IMG-20190129-092642.jpg) (https://postimg.cc/cvFv6yVf)

(https://i.postimg.cc/1n26XhVv/IMG-20190129-092649.jpg) (https://postimg.cc/1n26XhVv)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 29, 2019, 01:59:01 PM
Ram, they look healthy.

In such a mass of flowers, most of them have to die.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on January 29, 2019, 03:06:14 PM
Ok thanks Har
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on January 29, 2019, 06:15:02 PM
Ram, they look healthy.

In such a mass of flowers, most of them have to die.

Do mango flowers need pollinators? I have been reading conflicting stories online. My Carrie flowers look exactly like above pictures, but I haven't seen a single ant or bee visiting. Carrie is planted uphill next to a Jujube far from other mango trees. Ants been visiting other mangoes but not Carrie.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on January 29, 2019, 07:42:43 PM
Fly's seem to be the pollinator as far as I can tell
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 30, 2019, 08:21:29 AM
Mostly flies, of all sizes.  Bees also pollinate mangos, when nothing more interesting is nearby.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dross99_si on January 30, 2019, 09:23:48 AM
Love bugs are helping ours too  :)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dross99_si on February 07, 2019, 09:39:15 AM
I’m starting to get more worried about this small Pickering we have in a pot. It flowered pretty nicely but I am wondering if it’s taking a toll on the plant overall. Could that be the cause of the leaf tips browning or is it due to something else? Fert burn, overwatered, nute deficiency etc.
Debating on cutting each bloom spike down to 1/4 of the current size, leaving just a little on there so it doesn’t try to flower again. Then remove the rest of the spike in a month or so.
Would that help the tree’s health at all? What can I do to help this little guy flourish?
(https://i.postimg.cc/47x5pkkx/2-AFAB7-B5-B89-A-45-B7-A3-A0-82-BDBF71-AF80.jpg) (https://postimg.cc/47x5pkkx)

(https://i.postimg.cc/BP8BwTvW/3318-BB78-D8-B1-411-F-B49-E-F77-FEC814-DCA.jpg) (https://postimg.cc/BP8BwTvW)

(https://i.postimg.cc/vDDhBstP/B9-A604-CD-31-FF-45-CE-9036-2-CE4-FAE8-D049.jpg) (https://postimg.cc/vDDhBstP)

(https://i.postimg.cc/WhBXCHr5/DA658-D4-A-96-C9-458-D-A3-E7-98-CF21-D4-C597.jpg) (https://postimg.cc/WhBXCHr5)

(https://i.postimg.cc/cgkcm90M/E885-D7-D4-6-EE4-4463-8996-4-D28-D3096-B22.jpg) (https://postimg.cc/cgkcm90M)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 07, 2019, 11:43:02 AM
I have never tried your proposed inflorescence-stumping technique.

I customarily wait until pea-sized fruits develope, then break off the entire inflorescence at its base.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dross99_si on February 07, 2019, 05:58:48 PM
I have never tried your proposed inflorescence-stumping technique.

I customarily wait until pea-sized fruits develope, then break off the entire inflorescence at its base.

Thanks Har. The stumping idea I got from Chris at Truly Tropical in one of her YouTube videos.
As far as the plant struggling and leaves browning, do you think it has to do with the heavy flowering?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 07, 2019, 09:21:59 PM
It might be a fertilizer burn....

More likely it is Powdery Mildew or some other cool-weather fungus.  Looks as though the infection has proceeded in about five episodes--- see the progression upwards, from the older grey, to black, dark brown, dark tan, and light tan.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dross99_si on February 07, 2019, 10:58:54 PM
It might be a fertilizer burn....

More likely it is Powdery Mildew or some other cool-weather fungus.  Looks as though the infection has proceeded in about five episodes--- see the progression upwards, from the older grey, to black, dark brown, dark tan, and light tan.

You’re right. I see the progression. How should I tend to this issue to keep the tree alive and back to healthy state?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropheus76 on February 08, 2019, 09:45:11 AM
Where are you guys finding Keystone 350DP or Biomaster online? Not driving halfway across the state for it. I am trying to find a good foliar fert that I can simply order and am not having any luck. Whats good on Amazon? Would a citrus tree foliar work for mango as well? Already spraying CMB blend on the blooms.

Will Liquid Fish work just as well?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Frog Valley Farm on February 08, 2019, 10:28:00 AM
Where are you guys finding Keystone 350DP or Biomaster online? Not driving halfway across the state for it. I am trying to find a good foliar fert that I can simply order and am not having any luck. Whats good on Amazon? Would a citrus tree foliar work for mango as well? Already spraying CMB blend on the blooms.

Will Liquid Fish work just as well?

A small bag of a quality compost made into a tea is an excellent foliar spray which is full biological control agents that fight pathogens, insect herbivores and help plants with nutrient uptake.  Milk as a foliar spray has also been helpful at controlling powdery mildew.  Both are beneficial to the tree and the soil life, unlike toxic copper which kills everything. Since this is a soil born pathogen its common sense at least to me, to treat the soil with something that will not kill the bacteria that generate biocidal substances that are capable of destroying plant pathogens and insect invaders in and on the soil.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropheus76 on February 08, 2019, 12:55:26 PM
We have weevils here and the only thing that stops them is cold weather(which we have had plenty of 40s nights, but nothing cold enough to kill them) and systemic imidacloprid. I will use organic methods when its doable and cheap enough(like liquid fish) but overall, organic farming is incredibly inefficient. Organic farming on any larger scale is next to impossible in FL due to massive pest and disease pressure and generally poor soils. Oddly enough I haven't had an issue with mildew in the 6 or so years I have grown mangoes. Maybe its the high iron and sulfur content in the ground water of my shallow well.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Frog Valley Farm on February 08, 2019, 02:00:32 PM
We have weevils here and the only thing that stops them is cold weather(which we have had plenty of 40s nights, but nothing cold enough to kill them) and systemic imidacloprid. I will use organic methods when its doable and cheap enough(like liquid fish) but overall, organic farming is incredibly inefficient. Organic farming on any larger scale is next to impossible in FL due to massive pest and disease pressure and generally poor soils. Oddly enough I haven't had an issue with mildew in the 6 or so yearsk I have grown mangoes. Maybe its the high iron and sulfur content in the ground water of my shallow well.

We are in Florida and have zero pest and disease pressure and have been creating incredible black loam soils without buying any outside inputs mostly thru the use of homemade foliar sprays made from a variety of different compost recipes.   Some of our composts are thermophilic Biodynamic manure based, some are fermented and made from seeds, fruits and flower buds, some are from the roots and leaf tips of nitrogen fixing plants and some are from Black Soldier Fly larvae, some are from collected mushrooms and humus collected from the farm.  We also keep our entire orchard floor as an insectarium planted with plants that attract insect predetors. This not only works but works incredibly well in Florida and it’s mostly free.  It’s not the most attractive manicured look that most people like but it works and the plants, livestock and wildlife love it.  We also practice basic soil health principles.  We have not used any fish or fish byproducts, yet.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on February 09, 2019, 09:34:57 AM
Where are you guys finding Keystone 350DP

Find a rep and then order.  Some Crop Protection Services ops have it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on February 09, 2019, 09:53:25 AM
We are in Florida and have zero pest and disease pressure....

Really?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on February 16, 2019, 08:51:11 PM
Now that non stop rain has stopped for a day, I went out to take a look at Carrie flowers. Most of the flower panicles turned black. We had lots of rain, and lows of 32 F some nights. Is it some kind of black mold on the panicles? Is there a remedy? Thanks.


(https://i.postimg.cc/ZBS2JSz3/Carrie-panicle.jpg) (https://postimg.cc/ZBS2JSz3)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 16, 2019, 10:33:45 PM
Nutritional spray containing chelated Calcium and Boron, may help the remaining flowers to set fruit.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on February 16, 2019, 11:14:25 PM
Nutritional spray containing chelated Calcium and Boron, may help the remaining flowers to set fruit.

Would you recommend a foliar spray that contains both calcium and boron? I have Southern Ag  citrus spray but it seems it doesn’t contain boron. Thanks for your help :)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on February 17, 2019, 07:03:44 AM
Har...I started sprayin  Brexil multi about 4 -5 months ago on all my trees,I did it twice and for the last few weeks directly on open flowers
so as the flower pentacles open about every two or three days I've been hitting them with it
In the hopes that fruit sets and does not drop off.. I've also hit them with 62%copper spray,to protect the pinnacles and fruit that is forming
So far seems I'm getting a lot of fruit set,now can just hold on I'll have a fantastic year

 magnesium, boron, magnesium, and zinc

(https://i.postimg.cc/xkzJN7RS/IMG-20190217-063833.jpg) (https://postimg.cc/xkzJN7RS)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 17, 2019, 11:49:20 AM
Yes, a chelated metals spray--- iron, manganese, zinc, and a little copper, and also boron and magnesium---is excellent to help improve fruit set and fruit set retention, especially if there is also applied a separate spray of chelated calcium and boron.  Well nourished plants are also more resistant to various issues in general.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on February 17, 2019, 10:13:15 PM
Where can I buy Brexil multi at a reasonable price? Cheapest I saw $74.99 on eBay for 5 lbs.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: OCchris1 on February 18, 2019, 02:34:12 AM
I'm going out on a limb and saying that your flowers are suffering from your cold, dry winds. You want them to have some humidity but not too much or you'll have other problems. It's kind of reflective of life in general. Good luck.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: OCchris1 on February 18, 2019, 02:49:52 AM
My Carrie always aborts the first flush and rebounds the second time.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on February 18, 2019, 04:34:20 AM
Halkfish, I paid about $50 for a 5 pound bag
In Boynton Beach, after Har suggested here on this thread.(thanks Har).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: weiss613 on February 20, 2019, 11:20:14 PM
has anyone noticed that with younger mango trees, that when buds start swelling there is a simultaneous blackening of many leaves on the tree? It seems like those leaves look sick but it may just be a normal process???
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on February 21, 2019, 07:42:17 AM
has anyone noticed that with younger mango trees, that when buds start swelling there is a simultaneous blackening of many leaves on the tree? It seems like those leaves look sick but it may just be a normal process???

Yep, like a black powdery mildew look.  I recently sprayed them with a mix of Pristine, copper with a surfactant.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Garoh on February 26, 2019, 10:56:42 AM
hello everybody
Im in kuwait and 5 days ago we had a cold windy weather . One of my mango trees was positioned in a bad windy place it was planted one month and a half ago . It has a huge flowering and good health until we had that cold windy weather 5 days ago as i mentioned . Since that the flowers started to die and get dry . See the pics . Anyone has an idea about this ??

(https://i.postimg.cc/06RKf7y3/3-B702-F78-9-A22-4-CE3-8363-2234919-ADDFD.jpg) (https://postimg.cc/06RKf7y3)

(https://i.postimg.cc/w7rm1C89/71040-FBC-89-B2-44-FB-B5-AC-D425-EE955-B4-D.jpg) (https://postimg.cc/w7rm1C89)

(https://i.postimg.cc/r0q06cWN/DBB4203-D-CF3-F-4905-83-BC-A7-FEA6222-BA4.jpg) (https://postimg.cc/r0q06cWN)

Good morning

Here is my alphonso mango tree after one month or more since it’s got hit by a very cold wind .
Since then it’s getting worse everyday . Some branches dried and i cut them as shown in the pics . Also there some stains on trunk and branches and when i made a cut i found out this black and brown stain inside . I sprayed carbendazim fungicide and painted the cut .
Please anyone has an idea about how to deal with this problem because i see this tree is dying slowly .
Check these pics for the dried branches and the stain.


(https://i.postimg.cc/NLgZhR7S/0-C98-BD56-F8-CB-4216-8587-9-B7-EFBD1-FC7-B.jpg) (https://postimg.cc/NLgZhR7S)

(https://i.postimg.cc/nM0gnM3z/19-F88-B2-A-86-C8-4275-BCC6-A7429-E267-ED1.jpg) (https://postimg.cc/nM0gnM3z)

(https://i.postimg.cc/MfKLy8pq/3353-A1-E3-147-E-42-C5-9738-740-EFEB3-E2-EE.jpg) (https://postimg.cc/MfKLy8pq)

(https://i.postimg.cc/6yqSqwPh/3-FAF61-FA-D858-4-E4-E-B3-BB-7-A9-B079-ED136.jpg) (https://postimg.cc/6yqSqwPh)

(https://i.postimg.cc/Fdv8HStf/B05-C4-E71-6-D41-4-C61-AC89-7-E2-A4-B39-D3-F9.jpg) (https://postimg.cc/Fdv8HStf)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 26, 2019, 12:38:50 PM
Internal staining like that is usually serious.  Consider mailing an infected-but-still-alive branch to a lab that diagnoses plant diseases.  Ask the lab how to package it.

Meanwhile, treat with systemic fungicides and bactericies.  I don't know which products might be available in your country.

Copper Sulfate Pentahydrate (active ingredient, not product name), or any phosphite or phosphonate, may help.  Usually one does not mix the two (Copper and phos*).

Alliette or Flanker are conventional, systemic products that would probably help a lot.  Don't eat fruit for at least a year afterwards.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Garoh on February 27, 2019, 05:37:44 PM
Internal staining like that is usually serious.  Consider mailing an infected-but-still-alive branch to a lab that diagnoses plant diseases.  Ask the lab how to package it.

Meanwhile, treat with systemic fungicides and bactericies.  I don't know which products might be available in your country.

Copper Sulfate Pentahydrate (active ingredient, not product name), or any phosphite or phosphonate, may help.  Usually one does not mix the two (Copper and phos*).

Alliette or Flanker are conventional, systemic products that would probably help a lot.  Don't eat fruit for at least a year afterwards.

thanks for the reply Har

i have Copper oxychloride and sulfur  80 % WP & WG

also i have phosphoric Acid . some friends advice me to stop watrering for a few days . I also heared that injecting the staining on the main trunck with phosphoric acid will stop this problem  ::)
i'm gonna do my best to save this tree .
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 27, 2019, 07:19:12 PM
Most Copper products (except cuprous oxide  or copper octanoate) become excessively toxic if mixed with very acidic products, such as elemental Sulfur or phosphoric acid.

I haven't heard of injecting plant trunks with phosphoric acid, which is quite different from phosphorous acid.  Phosphorous acid products can be sprayed on trunks with a penetrant adjuvant.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on February 27, 2019, 10:34:30 PM
hello everybody
Im in kuwait and 5 days ago we had a cold windy weather . One of my mango trees was positioned in a bad windy place it was planted one month and a half ago . It has a huge flowering and good health until we had that cold windy weather 5 days ago as i mentioned . Since that the flowers started to die and get dry . See the pics . Anyone has an idea about this ??

(https://i.postimg.cc/06RKf7y3/3-B702-F78-9-A22-4-CE3-8363-2234919-ADDFD.jpg) (https://postimg.cc/06RKf7y3)

(https://i.postimg.cc/w7rm1C89/71040-FBC-89-B2-44-FB-B5-AC-D425-EE955-B4-D.jpg) (https://postimg.cc/w7rm1C89)

(https://i.postimg.cc/r0q06cWN/DBB4203-D-CF3-F-4905-83-BC-A7-FEA6222-BA4.jpg) (https://postimg.cc/r0q06cWN)

Good morning

Here is my alphonso mango tree after one month or more since it’s got hit by a very cold wind .
Since then it’s getting worse everyday . Some branches dried and i cut them as shown in the pics . Also there some stains on trunk and branches and when i made a cut i found out this black and brown stain inside . I sprayed carbendazim fungicide and painted the cut .
Please anyone has an idea about how to deal with this problem because i see this tree is dying slowly .
Check these pics for the dried branches and the stain.


(https://i.postimg.cc/NLgZhR7S/0-C98-BD56-F8-CB-4216-8587-9-B7-EFBD1-FC7-B.jpg) (https://postimg.cc/NLgZhR7S)

(https://i.postimg.cc/nM0gnM3z/19-F88-B2-A-86-C8-4275-BCC6-A7429-E267-ED1.jpg) (https://postimg.cc/nM0gnM3z)

(https://i.postimg.cc/MfKLy8pq/3353-A1-E3-147-E-42-C5-9738-740-EFEB3-E2-EE.jpg) (https://postimg.cc/MfKLy8pq)

(https://i.postimg.cc/6yqSqwPh/3-FAF61-FA-D858-4-E4-E-B3-BB-7-A9-B079-ED136.jpg) (https://postimg.cc/6yqSqwPh)

(https://i.postimg.cc/Fdv8HStf/B05-C4-E71-6-D41-4-C61-AC89-7-E2-A4-B39-D3-F9.jpg) (https://postimg.cc/Fdv8HStf)

Was this freezing weather or simply “cold”? What temperature did it get to ?(please indicate Celsius or Fahrenheit).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Garoh on February 28, 2019, 08:05:44 PM
It was cold weather and the temperature got to 0 to 2 Celsius with strong dry wind .
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on February 28, 2019, 10:14:27 PM
It was cold weather and the temperature got to 0 to 2 Celsius with strong dry wind .

Well 0C with dry wind would be enough to cause that damage. How often was the tree being watered?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Garoh on March 01, 2019, 09:47:29 AM
Once a week
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on March 01, 2019, 11:14:40 AM
Once a week

Insufficient before and after a weather event like that. Should have been watered heavily.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Garoh on March 01, 2019, 05:11:19 PM
Once a week

Insufficient before and after a weather event like that. Should have been watered heavily.

How often it should be watered ?
i didnt want to give it more water becuase of the flowers . but unfortunately half the flowers were burnt by cold wind .
i see this mango variety very senstive to cold . unlike keitt or other varieties .
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on March 03, 2019, 11:57:54 AM
Yes, a chelated metals spray--- iron, manganese, zinc, and a little copper, and also boron and magnesium---is excellent to help improve fruit set and fruit set retention, especially if there is also applied a separate spray of chelated calcium and boron.  Well nourished plants are also more resistant to various issues in general.

Har, would you recommend using Peter’s liquid stem for foliar feeding and occasional drenching with an 1:100 injector? It appears to contain all the metals you have mentioned above, thanks.

https://icl-sf.com/us-en/products/ornamental_horticulture/peters-professional-liquid-stem-g99068/
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 04, 2019, 09:35:36 PM
I assume that Peters mix would work, if used at a very low rate when spraying on open blooms.  Try it just on a branch or two, and watch it for 10 days--- if no harm is visible, then spray the rest.  I suspect that the amount of Iron is rather higher than needed, when compared to the other ingredients.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: WGphil on March 06, 2019, 08:48:06 AM


Good bug bad bug
(https://i.postimg.cc/bs1fb6hj/3-D8-A5-D44-1-EFA-43-CD-97-DE-CF9-D207-C504-F.png) (https://postimg.cc/bs1fb6hj)


Stink bug eating a weevil
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 06, 2019, 12:28:21 PM
Nice! 
I hadn't heard of a predatory stinkbug!
Did you get another picture of the back of the predator?  From that angle it looks like a beetle.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: WGphil on March 06, 2019, 03:57:10 PM

(https://i.postimg.cc/DmwdXrCZ/4561700-C-304-D-4-A14-97-EA-9158-C52442-EE.png) (https://postimg.cc/DmwdXrCZ)


Here you go

Looks a lot like assassin bug
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: chad6159 on March 06, 2019, 03:59:48 PM
Now if I could only get some of them in my yard! These weevils are eating everything up. They are usually just on my peach but they have now started taking a liking to my mango trees new growth!  >:( :-\
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: WGphil on March 06, 2019, 04:02:34 PM
And a screen shot of the photographer and his lectures

I just stumbled upon it today


(https://i.postimg.cc/SXCFcXGT/57695-C5-C-C892-40-DE-91-A8-666-EAD372-F7-C.jpg) (https://postimg.cc/SXCFcXGT)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 07, 2019, 07:55:06 AM
Wow!  And that stretched "radiation symbol" on the back should be easy to remember!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on March 07, 2019, 12:58:14 PM
A couple of my Pim Seng Mun seedlings have this happening to some of their leaf stems. It's not superficial like sooty mold, but is in the tissue. What is it and what can I do about it? Thanks!
(https://i.postimg.cc/z3zVQwMr/20190307-123745-1.jpg) (https://postimg.cc/z3zVQwMr)

(https://i.postimg.cc/YjdhBGKm/20190307-123748-1.jpg) (https://postimg.cc/YjdhBGKm)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 07, 2019, 03:48:28 PM
Could a metal-handled tool, on a hot day, been leaned against the tree?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on March 07, 2019, 04:23:02 PM
Do you think it's some sort of burn? The seedlings aren't that big, so haven't had to support any tools yet! I'd be happy if it was just a burn as opposed to some sort of bacterial or fungal infection.

Would it be wise to spray with copper or sulphur or cut and throw away those particular leaves, as a precaution?

Thanks!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on March 07, 2019, 04:51:17 PM
Here's a picture of the leaf that is attached to that stem:

(https://i.postimg.cc/SYdF00b1/20190307-164630.jpg) (https://postimg.cc/SYdF00b1)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on March 20, 2019, 08:24:07 PM
Unfortunately, my 3 gallon coconut cream from plantogram appeared to develop floral malformation. It was planted September 2018, and has grown a few feet since then. It started to form multiple flower panicles lately, and most of them look like below. What is the best remedy? Cut all the flowers if it has a chance in the future without the use of fungicides? Or, should I cut my losses and remove it so the disease doesn't spread to healthy trees. Thanks in advance.



(https://i.postimg.cc/K4tMKFRR/IMG-0637.jpg) (https://postimg.cc/K4tMKFRR)


(https://i.postimg.cc/k2H41hB0/IMG-0638.jpg) (https://postimg.cc/k2H41hB0)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: simon_grow on March 20, 2019, 10:02:51 PM
Unfortunately, my 3 gallon coconut cream from plantogram appeared to develop floral malformation. It was planted September 2018, and has grown a few feet since then. It started to form multiple flower panicles lately, and most of them look like below. What is the best remedy? Cut all the flowers if it has a chance in the future without the use of fungicides? Or, should I cut my losses and remove it so the disease doesn't spread to healthy trees. Thanks in advance.



(https://i.postimg.cc/K4tMKFRR/IMG-0637.jpg) (https://postimg.cc/K4tMKFRR)


(https://i.postimg.cc/k2H41hB0/IMG-0638.jpg) (https://postimg.cc/k2H41hB0)

That is not Mango Malformation disease. That is a pretty typical flowering panicle in Winter for SoCal grown Mangos. You can just leave the blooms or cut off 1/2-2/3 just to take some weight off the branch.

Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: simon_grow on March 20, 2019, 10:32:27 PM
A couple of my Pim Seng Mun seedlings have this happening to some of their leaf stems. It's not superficial like sooty mold, but is in the tissue. What is it and what can I do about it? Thanks!
(https://i.postimg.cc/z3zVQwMr/20190307-123745-1.jpg) (https://postimg.cc/z3zVQwMr)

(https://i.postimg.cc/YjdhBGKm/20190307-123748-1.jpg) (https://postimg.cc/YjdhBGKm)

I believe that is a fungus. I have seen that in a lot of trees in SoCal, looks like you guys have it in Florida too. Sometimes you can see a hole where the darkening begins. It usually starts on that little stem where the leaf begins, just like the picture you posted.

In our colder climate, the darkening progressively moves down the central vein of that leaf and the leaf eventually dries up, sometimes staying attached to the branch after it’s dead. Sometimes, dieback of the stem occurs around areas that show these symptoms.

I would spray with Copper fungicide recommended for mango and alternating it with Sulfur per manufacturers instructions. If you use a systemic copper like Magnabon CS2005, it will work better than some of the cheaper coppers.

Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on March 20, 2019, 11:30:14 PM
Thank you, Simon!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on March 21, 2019, 11:17:27 AM
Unfortunately, my 3 gallon coconut cream from plantogram appeared to develop floral malformation. It was planted September 2018, and has grown a few feet since then. It started to form multiple flower panicles lately, and most of them look like below. What is the best remedy? Cut all the flowers if it has a chance in the future without the use of fungicides? Or, should I cut my losses and remove it so the disease doesn't spread to healthy trees. Thanks in advance.



(https://i.postimg.cc/K4tMKFRR/IMG-0637.jpg) (https://postimg.cc/K4tMKFRR)


(https://i.postimg.cc/k2H41hB0/IMG-0638.jpg) (https://postimg.cc/k2H41hB0)

That is not Mango Malformation disease. That is a pretty typical flowering panicle in Winter for SoCal grown Mangos. You can just leave the blooms or cut off 1/2-2/3 just to take some weight off the branch.

Simon

I am relieved to see your diagnosis, I was ready to yank the tree to save the rest. One thing though, CC is the only tree with deformed or dwarf flower panicles, rest have normal looking long panicles. Thanks.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: simon_grow on March 21, 2019, 06:22:57 PM
It could be nutritional or due to the size(establishment) of your trees. Your Coconut Cream looks like it could use some fertilizer based on the light green color of your leaves.

Your other trees may have a more established root system and canopy so it may have more energy to push out larger blooms.

Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on March 21, 2019, 06:36:03 PM
It could be nutritional or due to the size(establishment) of your trees. Your Coconut Cream looks like it could use some fertilizer based on the light green color of your leaves.

Your other trees may have a more established root system and canopy so it may have more energy to push out larger blooms.

Simon

I have been feeding 20-20-20 with micros through Ez-Flo during regular watering which is a few times a week, and fish emulsion + kelp every two weeks. Can it be in a nutrient lock condition for any reason?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on March 21, 2019, 06:37:24 PM
Unfortunately, my 3 gallon coconut cream from plantogram appeared to develop floral malformation. It was planted September 2018, and has grown a few feet since then. It started to form multiple flower panicles lately, and most of them look like below. What is the best remedy? Cut all the flowers if it has a chance in the future without the use of fungicides? Or, should I cut my losses and remove it so the disease doesn't spread to healthy trees. Thanks in advance.



(https://i.postimg.cc/K4tMKFRR/IMG-0637.jpg) (https://postimg.cc/K4tMKFRR)


(https://i.postimg.cc/k2H41hB0/IMG-0638.jpg) (https://postimg.cc/k2H41hB0)

Post photos when the flowers open.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: simon_grow on March 22, 2019, 10:23:50 PM
It could be nutritional or due to the size(establishment) of your trees. Your Coconut Cream looks like it could use some fertilizer based on the light green color of your leaves.

Your other trees may have a more established root system and canopy so it may have more energy to push out larger blooms.

Simon

I have been feeding 20-20-20 with micros through Ez-Flo during regular watering which is a few times a week, and fish emulsion + kelp every two weeks. Can it be in a nutrient lock condition for any reason?

Those ratios are too high for Mangos grown in SoCal, especially when combined with fish emulsion. Unless you are using the 20-20-20 in diluted feedings, you can be causing nutrient lock but it depends on many factors.

Going into the fall and especially in Winter, Mangos don’t need much if any fertilizer since they basically stop growing vegetatively when it’s cold.

Too much Nitrogen in Fall and Winter will encourage wayward( out of season) growth that may start out vegetatively but will end up usually turning into blooms. This out of season growth is exposed to cold weather and the growth often gets injured by the cold or fungus.

Your fertilizer regimen may work well in the warmer months between May through August but I would decrease Nitrogen and increase Silica, Iron, Magnesium, Manganese and Zinc around September. Increasing these micros and some of the minors around this time will help your tree uptake these elements before it gets too cold. When it gets too cold, it becomes more difficult for mango trees to uptake these nutrients partly because of slower respiration and partly because of decreased microbial activity in the soil.

Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on March 23, 2019, 09:54:27 PM
You are right Simon, I was likely over fertilizing the trees during winter. I noticed flushes during January/February are lighter green than the past flashes. Some like Maha Chanok, cogshall, small 3 g ice cream flowered a lot. I made a mistake of cutting flower panicles in the muddle of January which killed the trees except maha that is in ground, but in a bad shape. Trees started drying up from the top and eventually died. I haven’t seen that to trees I didn’t cut flower panicles. I am hoping CC doesn’t have malformation and it’s current status is due to over fertilization.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on March 26, 2019, 09:15:04 PM
Unfortunately, my 3 gallon coconut cream from plantogram appeared to develop floral malformation. It was planted September 2018, and has grown a few feet since then. It started to form multiple flower panicles lately, and most of them look like below. What is the best remedy? Cut all the flowers if it has a chance in the future without the use of fungicides? Or, should I cut my losses and remove it so the disease doesn't spread to healthy trees. Thanks in advance.


Post photos when the flowers open.

Here are some pictures with open flowers, a few opened so far. That is the case with my other mangoes as well. Most flowered but flowers didn't open yet as we were still getting low 40s until last week and a few low 40s in the forecast next week as well.



(https://i.postimg.cc/k2gQj0zg/IMG-0654.jpg) (https://postimg.cc/k2gQj0zg)


(https://i.postimg.cc/kVkWgB42/IMG-0652.jpg) (https://postimg.cc/kVkWgB42)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Daintree on March 26, 2019, 10:35:32 PM
The eggs/cocoons look like those laid by parasitic wasps, but I have only ever seem them lay them on tomato hornworms.
Maybe you can take some of the eggs off, place them in a TIGHTLY sealed jar and see what hatches! Otherwise, whatever they are may leave before you see them.
I did that when I was a kid - thought I had a million baby dragonflies.  Turned out to be a million mosquitoes...

Carolyn
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 26, 2019, 10:38:18 PM
The side branches of the inflorescence look stunted or dwarfed, but otherwise, all the tissue appears healthy.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on March 26, 2019, 11:00:36 PM
The side branches of the inflorescence look stunted or dwarfed, but otherwise, all the tissue appears healthy.

What a relief! I was waiting to hear your opinion, good thing I didn’t yank the tree thinking it developed malformation disease. Thanks.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 27, 2019, 09:56:09 AM
A paper published in India, quite a few years ago, indicated that mango flowers infected with mango malformation, could be made to set fruit anyway by spraying them with Ascorbic Acid / Vitamin-C.  This is only relevant for hopelessly infested trees, where it would be financially ruinous to cut them all down.

If malformation begins on a mostly healthy tree, the infected branch should be cut off, including cutting off at least several inches of healthy-looking branch--- some growers prefer to remove 2-3 feet of healthy-looking branch.  Clippers or saws should be sanitized between cuts, and prunings should be removed from the grove.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: savemejebus on April 01, 2019, 03:24:06 PM
What's going on with my lemon zest tree? This is (thus far) only happening on a couple branches - everything else appears to be healthy. Not entirely clear from the photo, but the leaves are severely curling up which is what first caught my eye.


(https://i.postimg.cc/4HtyN2vb/20190401-072222.jpg) (https://postimg.cc/4HtyN2vb)

(https://i.postimg.cc/N5qLPYYN/20190401-072233.jpg) (https://postimg.cc/N5qLPYYN)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 01, 2019, 09:26:57 PM
Powdery Mildew.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on April 01, 2019, 10:32:47 PM
I noticed blackened leaves near the petiole and part of the branch, I cut it off as a precaution. Should I be worried if I see more of this, and is there a remedy? Thanks.

(https://i.postimg.cc/Kk5Djb73/IMG-0675.jpg) (https://postimg.cc/Kk5Djb73)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 02, 2019, 08:22:04 AM
Inside the branch where you cut it, was the wood clean creamy white?  Or were there dark stains?

If the dark stains go on down to the roots, the tree is probably a gonner, and the ground contaminated;  however, you might be able to save the tree by drenching the ground with a conventional systemic fungicide, such as Alliette or Flanker, which often bring plants back from the edge of death.

If the wood looked clean where you cut it, you still might want to drench the soil with a Potassium Phosphite product, such as Organocide Plant Doctor (NOT Organocide 3-in-1).  You may have to follow the directions for drenching avocadoes, as most labels don't manage to mention drenching mangoes, as established trees in groves are unlikely to need it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on April 02, 2019, 09:10:31 AM
Cut part of the branch was creamy white. I am going to drench the affected Alphonso with Organocide systemic fungicide once I get it tomorrow. Does it kill beneficial organisms when applied, if not I can drench all mango trees as a precaution?  Thanks.

Edit: Alphonso was in a 15 gallon pot until yesterday when I planted it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 02, 2019, 03:03:29 PM
it is pretty strong stuff, so measure carefully.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on April 02, 2019, 04:41:04 PM
it is pretty strong stuff, so measure carefully.

Har, I can only find foliar and bark injection rates for mango and avocado on the label online. Should I use soil drench rate given for conifers 2-4 teaspoons/gallon, or 2/3 oz per gallon? I can make a stock solution at .66 oz/gallon or more, and drench the soil at 1:100 rate with dosatron; however, 0.66 oz/gallon rate is higher than the foliar rate given for both mango and avocado. Thanks for your help.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 02, 2019, 08:32:05 PM
You are right.  [about the label specs for mango and avocado]

[In recent years I have sprayed with Potassium Phosphite products labeled as fertilizers, and coming in 2 1/2-gallon jugs, and those don't have specific recommendations for drenching mango trees either, as everything would have to be just right to avoid injuring the trees.]

If your small mango tree has plenty of healthy leaves on it, then the labeled instructions for spraying the foliage, at 2 teaspoons per gallon, will work best.  It is systemic in action, just as it would be if entering the roots.  And this way you will be strictly per label.

If, however, the tree looks as though it is going to die anyway, then nothing worse than death will happen to it if it is drenched at the ornamental bedding plant rate of 1/8 teaspoon in just one gallon of water over that 15-gallon-sized rootball.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on April 02, 2019, 10:07:05 PM
Thanks Har, I will use recommended foilar spray rate or 2 teaspoons/gallon for drenching as you recommended. I will probably drench all the mangoes since they are in ground for only 6 months or less.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 03, 2019, 09:17:16 AM
That is probably too strong for drenching, because the volume of mix that you are applying to the plant is far greater.

Soil drenching rates are usually different from foliar spraying rates.

What I mentioned as Probably safe for drenching is 1/8 teaspoon per gallon.  If you go with stronger, than just do one and observe it for at least a month before doing any others.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on April 03, 2019, 10:24:48 PM
Har, thanks for pointing that out, or I would have used too much. I bought a quart size and at this rate it should last me decades since there is no expiration date. I used 1 ml/2 gallon of water. Thanks again.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: simon_grow on April 03, 2019, 10:58:05 PM
I noticed blackened leaves near the petiole and part of the branch, I cut it off as a precaution. Should I be worried if I see more of this, and is there a remedy? Thanks.

(https://i.postimg.cc/Kk5Djb73/IMG-0675.jpg) (https://postimg.cc/Kk5Djb73)

I call that black stuff “Black Death”. If untreated, the blackened areas gradually increase in size and cause leaf death and eventually die back of the infected area. The PPK lineage seems really susceptible to this type of die back. Lemon Zest and PPK can get it really bad. I don’t have enough data on Orange Sherbet.

Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on April 03, 2019, 11:27:05 PM
I noticed blackened leaves near the petiole and part of the branch, I cut it off as a precaution. Should I be worried if I see more of this, and is there a remedy? Thanks.

(https://i.postimg.cc/Kk5Djb73/IMG-0675.jpg) (https://postimg.cc/Kk5Djb73)

I call that black stuff “Black Death”. If untreated, the blackened areas gradually increase in size and cause leaf death and eventually die back of the infected area. The PPK lineage seems really susceptible to this type of die back. Lemon Zest and PPK can get it really bad. I don’t have enough data on Orange Sherbet.

Simon

I drenched the affected tree with Organocide systemic fungicide as Har suggested. I haven't seen black spot in other areas or on other trees, fingers crossed.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Vernmented on April 05, 2019, 10:58:51 AM
Someone emailed me these pictures. They said it was only on the trunk and branches. Any ideas?

(https://live.staticflickr.com/7836/46627227945_0fc2c15809_c.jpg)

(https://live.staticflickr.com/7814/47489887422_4459ab9d36_c.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: savemejebus on April 05, 2019, 11:47:33 AM
picrure quality isn't great, but kinda looks like lobate scale (though I've never seen it on mango before).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: ivan79 on April 05, 2019, 06:39:55 PM
Hello all. Below I'm attaching some photos of my two year old fruit punch mango tree,for some reason the new growth is not turning totally green,and the tips seem to go brown on me,so question is,I'm i over fertilizing? Or is this something i can correct by applying some type of spray to the leaves?
Thanks all.
(https://i.postimg.cc/HJJZPJLg/20190405-182959.jpg) (https://postimg.cc/HJJZPJLg)

(https://i.postimg.cc/zyGPK2Z3/20190405-183005.jpg) (https://postimg.cc/zyGPK2Z3)

(https://i.postimg.cc/Xr118K4L/20190405-183010.jpg) (https://postimg.cc/Xr118K4L)

(https://i.postimg.cc/Jy96w1yB/20190405-183018.jpg) (https://postimg.cc/Jy96w1yB)

(https://i.postimg.cc/3dBcy5qP/20190405-183031.jpg) (https://postimg.cc/3dBcy5qP)

(https://i.postimg.cc/hJwwSLYv/20190405-183039.jpg) (https://postimg.cc/hJwwSLYv)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 05, 2019, 08:10:08 PM
What type of soil do you have?  pH?  What types of fertilizers have you used?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: simon_grow on April 05, 2019, 09:33:23 PM
It looks like Iron or possibly Manganese deficiency since it’s affecting the younger growth.

Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 06, 2019, 08:25:18 AM
Could also be deficiencies of Magnesium or Sulfur.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on April 09, 2019, 02:55:10 PM
Is my VP stunted for some reason? It’s been in ground for 6 months and haven’t grown at all except for showing some green buds. It was a leggy tree from the beginning. Is there something I can do  to bring it out of dormancy?
(https://i.postimg.cc/5QLYg6Qb/6905-EFD3-7368-46-B5-B4-AF-F6-B3-B03-C35-C4.jpg) (https://postimg.cc/5QLYg6Qb)

(https://i.postimg.cc/7504LS8x/E4-F97964-361-E-480-A-8164-2-CD956743114.jpg) (https://postimg.cc/7504LS8x)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 10, 2019, 10:21:44 AM
Did you cut off the circling roots when you removed your VP from its container?  If not, your tree is probably root-bound.

It is also desireable for a tree to concentrate its energies on root system enhancement, before increasing the canopy.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on April 10, 2019, 10:43:30 AM
Did you cut off the circling roots when you removed your VP from its container?  If not, your tree is probably root-bound.

It is also desireable for a tree to concentrate its energies on root system enhancement, before increasing the canopy.

I haven't cut the circling roots during planting. Should I dig around the VP to disturb the roots? Or, is it too late for the tree? Thanks.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 10, 2019, 08:25:47 PM
If you remember the pot size, you can slice down deep with a long sharpened spade, with one edge of the spade toward the trunk, at four points.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on April 10, 2019, 10:58:39 PM
If you remember the pot size, you can slice down deep with a long sharpened spade, with one edge of the spade toward the trunk, at four points.

Good idea, I just drove a spade in all 4 corners of the VP. It was from a 5 gallon. Thanks for your advice.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: shinzo on April 11, 2019, 01:59:30 AM
In case of circling Roots, Can you describe how we should proceed before planting? Uncircle them and make the cuts? What about the tap Root? Should we prune it if it is circling? Thanks you in advance
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 11, 2019, 11:41:02 AM
I use needle-nosed clippers.  I cut all roots of any size that were touching the pot, bottom and sides. 

I don't dig more than 1/4 inch into the root-ball--- usually 1/8--- unless a plant is terribly potbound with already fat roots;  then maybe one has to dig 2 inches into the sides to cut one-inch thick circling roots.  A terribly root-bound tree, after root-pruning, should be re-potted, placed under 70-85% shade, staked and the top of the plant should be bagged with a clear plastic bag, for about two months.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Oncorhynchus on April 14, 2019, 09:44:29 PM
Can someone tell me what is going on with this Ataulfo seedling? It grew these long curving leaves and weird clumps of buds last year and hasn’t done anything since.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Oncorhynchus on April 14, 2019, 09:45:57 PM
My picture didn’t load last time, trying again.

*edit - didn’t load this time either, trying to figure out what I’m doing wrong.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on April 26, 2019, 09:21:34 PM
I cut off all cold damaged branches of my Maha Chanok, new leaves are pushing now. But most of the leaves are curling and crumbling. Is it due to some deficiencies or excessive  micro/macro nutrients? Thanks.

(https://i.postimg.cc/yWgYC5NM/0-F13536-E-FD99-430-A-9-DEC-F9137-CAF0-FCD.jpg) (https://postimg.cc/yWgYC5NM)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 26, 2019, 10:25:52 PM
The soil looks like compost.  How deep is that?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on April 26, 2019, 10:31:57 PM
The soil looks like compost.  How deep is that?

~2’ and consists of planting mix, worm gold plus and native soil. I spread ~6-12” of  compost outside of the black plastic edging, some compost may have made it inside the ring near the tree.

Edit: it used to be a healthy tree until I pinched the fruitlets and cut the panicles, and made it susceptible to cold damage in December.

(https://i.postimg.cc/YjjZycCF/83419533-E7-BC-4019-8330-6-F1323-F9-AD98.jpg) (https://postimg.cc/YjjZycCF)

(https://i.postimg.cc/T5Wk26KH/AC3-CCF20-6-A8-F-462-F-B7-FB-754-F73-B05-E37.jpg) (https://postimg.cc/T5Wk26KH)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on May 01, 2019, 05:32:10 PM
I never amend backfill especially if in clay.  That creates a non draining pot.  Add humus from the top down by top dressing with mulch.

J rooting, spin out and girdling of the roots will either stunt or kill a tree.  Lost a Pickering because of it. Nursery grown pots are notorious for this problem and another good reason why smart ones are going with injection molded RootMaker pots.  I have some of their 2 gal. pots from an old and large Texas nursery and they are the bomb.  The pot has different levels, about 3 tiers, each with ribs to direct the roots and holes to air prune the root tips which induces profuse lateral fibrous branching,

If a small tree is pot bound with severe root spin out I run a sharp knife 4 times around the rootball from the top to the bottom about 1/2" deep.  This will cut thru any spin out and will also induce good root development and no it won't promote disease entry into the cuts.  Blast the rootball clean with a hose so you can inspect its condition.

Am also in the camp of giving a young mango a high N food like the 50# of a  10 mo. Osmocote I just got - 18-5-9 with the broadest micro package of any food I've seen.  Don't over do the high P food when the tree is young.  https://www.amleo.com/osmocote-19-5-8-slow-release-fertilizer/p/1958/ (https://www.amleo.com/osmocote-19-5-8-slow-release-fertilizer/p/1958/)  Free shipping too!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: simon_grow on May 01, 2019, 06:27:37 PM
I cut off all cold damaged branches of my Maha Chanok, new leaves are pushing now. But most of the leaves are curling and crumbling. Is it due to some deficiencies or excessive  micro/macro nutrients? Thanks.

(https://i.postimg.cc/yWgYC5NM/0-F13536-E-FD99-430-A-9-DEC-F9137-CAF0-FCD.jpg) (https://postimg.cc/yWgYC5NM)

Looks like more cold damage and some minor fungal infection. When the weather warms up some more, the growth should start looking more normal. Do you get a lot of moisture or dew in the early morning?

Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on May 02, 2019, 07:35:33 AM
I'd check for spider mites too.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EvilFruit on May 02, 2019, 11:54:46 AM
Please Id the deficiency on the new growth, Is it Magnesium or Iron ?.


(https://i.postimg.cc/3yDnPr4k/IMG-20190501-185316.jpg) (https://postimg.cc/3yDnPr4k)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 02, 2019, 06:56:23 PM
Both, and Manganese.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EvilFruit on May 03, 2019, 08:38:19 AM
Thank you very much, Har.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 03, 2019, 10:44:01 AM
That label of Osmocote 19-5-8, listed above on this thread, is kind of odd.

The footnote listing of slow-release percentages, which presumably are percentages of the whole content of the bag, same as the percentages listed in the main column, are almost equal to the total percent of each element, which is very good, and meets one's expectations for a fully-coated mix such as this.  [If the slow-release percentages are viewed as only percentages of the total of each individual element, then the amount of slow-release action is very low and not credible for fully-coated products.]

EXCEPT, that the slow-release soluble Potassium is somehow 3% higher than the total soluble Potassium in the bag!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Das Bhut on May 06, 2019, 12:10:46 PM
this tree doesn't look too bad but it hasn't fruited, it's a seedling but seems way too big to not have ever flowered

https://imgur.com/5DueNr7

https://imgur.com/jdggrv7

any ideas?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on May 08, 2019, 07:31:06 AM
That label of Osmocote 19-5-8, listed above on this thread, is kind of odd.

The footnote listing of slow-release percentages, which presumably are percentages of the whole content of the bag, same as the percentages listed in the main column, are almost equal to the total percent of each element, which is very good, and meets one's expectations for a fully-coated mix such as this.  [If the slow-release percentages are viewed as only percentages of the total of each individual element, then the amount of slow-release action is very low and not credible for fully-coated products.]

EXCEPT, that the slow-release soluble Potassium is somehow 3% higher than the total soluble Potassium in the bag!

Not following your potassium thoughts.   For starts it's a 8-9 month.  Since I couldn't get my usual Polyon I took advantage of that terrific buy. If you can beat $85 for that 50# SHIPPED I'd like to know.  Here's the specs. If I had what I presume is the sand you guys have plus your frequent rainfall I'd be using a slow release product - https://icl-sf.com/us-en/products/ornamental_horticulture/osmocote-blend-a901316-19-5-8/

Back in 2005 I started a farm and since then I have literally field planted 10,000 or so Xmas, nut, fruit, shade trees and grapevines. EVERY one of them got a handful of Polyon 18-4-9  at their base.  I also use 10 - 12 month Polyon on all greenhouse tropical fruit trees adding supplemental potassium sulphate when need be.  It is complete including Ca which mangos love.

(https://i.postimg.cc/68X2dk5y/Polyonsend.jpg) (https://postimg.cc/68X2dk5y)

(https://i.postimg.cc/NLPj45By/First-Tree-Planted3-6-2006.jpg) (https://postimg.cc/NLPj45By)

EvilFruit, what's the NPK of the food that mango is getting, what's your soil profile like including the pH?   Not a Mg issue.  Mg deficiencies only show on lower leaves as a pale yellow hue but can work its way to the mid level. It's a mineral transportation thingie regarding Mg. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EvilFruit on May 08, 2019, 06:23:35 PM
Quote
EvilFruit, what's the NPK of the food that mango is getting, what's your soil profile like including the pH?   Not a Mg issue.  Mg deficiencies only show on lower leaves as a pale yellow hue but can work its way to the mid level. It's a mineral transportation thingie regarding Mg. 

Hi Mark,

This mango is supposed to be Ewais or Taimoor Mango from Egypt.

My soil is pure sand, desert sand. It is very poor in almost all elements that is essential for plant life. As for NPK, I use water soluble fertilizer (19-19-19+1MgO) that is injected to the irrigation line and granular Fertilizer (8-8-16). I also add Trace Elements powder every three weeks and I use potassium sulfate before the plant start flowering. I don't use the full recommended dosage by the manufacture, I use only 1/3 of recommended dosage and some organic fertilizer (manure, compost) when I have it.

I have never tasted my soil pH.

Here is the products I use.

http://www.adfert.com/product_item/sulotaste/19-19-19.html (http://www.adfert.com/product_item/sulotaste/19-19-19.html)
http://www.adfert.com/product_item/granular_npk/8-8-16.html (http://www.adfert.com/product_item/granular_npk/8-8-16.html)
http://www.adfert.com/product_item/ws_TE/combi1.html (http://www.adfert.com/product_item/ws_TE/combi1.html)

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: BPelkey on May 08, 2019, 07:25:28 PM
A few weeks ago I noticed these white objects on some Lemon Meringue mango leaves.  Pic attached.  Any advice on what they are?
(https://i.postimg.cc/zL1L1wwQ/00100d-PORTRAIT-00100-BURST20190507083503786-COVER.jpg) (https://postimg.cc/zL1L1wwQ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 08, 2019, 08:54:51 PM
Mango scale.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: BPelkey on May 09, 2019, 08:55:31 AM
Thank you Har.  I have looked up pics of Mango Scale and you are correct.
I initially tried to simply wipe the white spots off the mango leaves, but they came back.
In this forum you have suggested Neem oil and Insecticidal Soap as remedies.  Does liquid Sevin work?  I also found a link suggesting Bayer Tempo SC.  Any experience with this?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on May 09, 2019, 09:13:44 AM
Thank you Har.  I have looked up pics of Mango Scale and you are correct.
I initially tried to simply wipe the white spots off the mango leaves, but they came back.
In this forum you have suggested Neem oil and Insecticidal Soap as remedies.  Does liquid Sevin work?  I also found a link suggesting Bayer Tempo SC.  Any experience with this?

Apply Bonide All Season Hort. Oil or any high quality paraffinic oil. Shake before applying as it contains an emulsifier, a non ionic surfactant
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on May 09, 2019, 09:17:53 AM
Quote
EvilFruit, what's the NPK of the food that mango is getting, what's your soil profile like including the pH?   Not a Mg issue.  Mg deficiencies only show on lower leaves as a pale yellow hue but can work its way to the mid level. It's a mineral transportation thingie regarding Mg. 

Hi Mark,

This mango is supposed to be Ewais or Taimoor Mango from Egypt.

My soil is pure sand, desert sand. It is very poor in almost all elements that is essential for plant life. As for NPK, I use water soluble fertilizer (19-19-19+1MgO) that is injected to the irrigation line and granular Fertilizer (8-8-16). I also add Trace Elements powder every three weeks and I use potassium sulfate before the plant start flowering. I don't use the full recommended dosage by the manufacture, I use only 1/3 of recommended dosage and some organic fertilizer (manure, compost) when I have it.

I have never tasted my soil pH.

Here is the products I use.

http://www.adfert.com/product_item/sulotaste/19-19-19.html (http://www.adfert.com/product_item/sulotaste/19-19-19.html)
http://www.adfert.com/product_item/granular_npk/8-8-16.html (http://www.adfert.com/product_item/granular_npk/8-8-16.html)
http://www.adfert.com/product_item/ws_TE/combi1.html (http://www.adfert.com/product_item/ws_TE/combi1.html)

I took a look at the photo of those leaves again. I don't see a real problem based on the mature leaves.  They are dark green with no chlorosis evident.  The new immature leaves show a very minor chlorosis but nothing I'd be concerned about.  I think you're doing a great job considering the challenges you have.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: BPelkey on May 10, 2019, 08:25:29 AM
Thanks, Mark.  I'll try this.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EvilFruit on May 10, 2019, 06:26:56 PM
Quote
EvilFruit, what's the NPK of the food that mango is getting, what's your soil profile like including the pH?   Not a Mg issue.  Mg deficiencies only show on lower leaves as a pale yellow hue but can work its way to the mid level. It's a mineral transportation thingie regarding Mg. 

Hi Mark,

This mango is supposed to be Ewais or Taimoor Mango from Egypt.

My soil is pure sand, desert sand. It is very poor in almost all elements that is essential for plant life. As for NPK, I use water soluble fertilizer (19-19-19+1MgO) that is injected to the irrigation line and granular Fertilizer (8-8-16). I also add Trace Elements powder every three weeks and I use potassium sulfate before the plant start flowering. I don't use the full recommended dosage by the manufacture, I use only 1/3 of recommended dosage and some organic fertilizer (manure, compost) when I have it.

I have never tasted my soil pH.

Here is the products I use.

http://www.adfert.com/product_item/sulotaste/19-19-19.html (http://www.adfert.com/product_item/sulotaste/19-19-19.html)
http://www.adfert.com/product_item/granular_npk/8-8-16.html (http://www.adfert.com/product_item/granular_npk/8-8-16.html)
http://www.adfert.com/product_item/ws_TE/combi1.html (http://www.adfert.com/product_item/ws_TE/combi1.html)

I took a look at the photo of those leaves again. I don't see a real problem based on the mature leaves.  They are dark green with no chlorosis evident.  The new immature leaves show a very minor chlorosis but nothing I'd be concerned about.  I think you're doing a great job considering the challenges you have.

Thank you Mark.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: skhan on May 17, 2019, 11:30:18 AM
I noticed the newest leaves on my fruiting Dupuis Saigon (branch on multi grafted tree) seem unhealthy and slightly chlorotic.
Is there a specific micro I'm missing? (Its due for some fert, but the rain is not working with me)

(https://live.staticflickr.com/65535/32911945217_6d2c9b5481_n.jpg) (https://flic.kr/p/S9jjFk)

(https://live.staticflickr.com/65535/47803860162_02b661109c_n.jpg) (https://flic.kr/p/2fQghay)

(https://live.staticflickr.com/65535/33978745338_43e2488177_n.jpg) (https://flic.kr/p/TLzXbS)

Also, on the same tree but different branch i have Lemon Zest.
Is this MBBS, it looks like a scuff to me, and i don't see and sap
Its been on the fruits for like a month or so now
(https://live.staticflickr.com/65535/33978745138_d1952c6d57_n.jpg) (https://flic.kr/p/TLzX8q)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on May 17, 2019, 01:26:45 PM
Doesn't look like mbbs on the LZ. Not sure which nutrient is lacking (zinc, mn, mg, fe), but I've been able to convert that into green via the following program:

 - Hars 0-3-16 once every 3 - 4 months
 - Helena's micronutrient mix (0-0-6) once a year
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Paquicuba on May 29, 2019, 05:08:37 PM
I'm now using Hars 0-3-16 and also recently used keyplex 350 for the micros. However, keyplex 350 caused some damaged to new tender growth. Am I not supposed to spray new growth or perhaps I used too much? I used 1 ounce per gallon following the label.  If I went overdosed, what can I do to correct the damage?  Thanks!!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on May 29, 2019, 05:11:52 PM
Hmm, that's odd. You need to spray newer growth for it to work properly. Hardened leaves form some sort of waxy layer that inhibits uptake (leading to a freckled appearance).

Pictures?

I'm now using Hars 0-3-16 and also recently used keyplex 350 for the micros. However, keyplex 350 caused some damaged to new tender growth. Am I not supposed to spray new growth or perhaps I used too much? I used 1 ounce per gallon following the label.  If I went overdosed, what can I do to correct the damage?  Thanks!!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Paquicuba on May 29, 2019, 10:44:30 PM
Here are some images from different trees. Perhaps because I used "Coco Wet Organic Wetting Agent"?

(https://i.postimg.cc/nMsLKbzx/IMG-0637.jpg) (https://postimg.cc/nMsLKbzx)

(https://i.postimg.cc/s1tgw6Qh/IMG-0638.jpg) (https://postimg.cc/s1tgw6Qh)

(https://i.postimg.cc/0bD23YDH/IMG-0640.jpg) (https://postimg.cc/0bD23YDH)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on May 29, 2019, 11:31:11 PM
It looks a little bit like a fungal infection. Does your irrigation hit those leaves?

Here are some images from different trees. Perhaps because I used "Coco Wet Organic Wetting Agent"?

(https://i.postimg.cc/nMsLKbzx/IMG-0637.jpg) (https://postimg.cc/nMsLKbzx)

(https://i.postimg.cc/s1tgw6Qh/IMG-0638.jpg) (https://postimg.cc/s1tgw6Qh)

(https://i.postimg.cc/0bD23YDH/IMG-0640.jpg) (https://postimg.cc/0bD23YDH)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 30, 2019, 07:49:50 AM
I haven't worked with Coco-Wet.  Does the label give advice about use in different weather conditions?  Did you use the low or moderate rate?

Adjuvants do often cause spray damage--- almost as often as the ingredients they are supposed to help.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on May 30, 2019, 09:40:55 AM
Here are some images from different trees. Perhaps because I used "Coco Wet Organic Wetting Agent"?


You've got fungus issues.

Does Coco Wet have a rep for being phyto-toxic when applied to young foliage which is tender and hasn't hardened off yet?

I only use non-ionic surfactants like Red River NIS.

I have been spraying my mangos with Pristine + coppers and/or 3336WP and add 1 tsp/gal. of NIS as a spreader sticker.  My carrier is always rain water.  I'll add a bit of a high N food to increase uptake in the case of systemics like Pristine.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on May 30, 2019, 10:29:07 AM
For those interested, here is a list of EPA Reduced Risk fungicides: https://www.epa.gov/pesticide-registration/reduced-risk-and-organophosphate-alternative-decisions-conventional (https://www.epa.gov/pesticide-registration/reduced-risk-and-organophosphate-alternative-decisions-conventional)

Sort by pesticide type and look for "F".

I wasn't able to achieve adequate control with organic products, but a mix of organic and RR has done reasonably well.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on May 30, 2019, 10:55:56 AM
Just for the record I only use fungicides known to be safe for personal consumption if they're holding fruit.  If they're not, I'll use whatever I want.  Am starting over with new and young trees thanks to a Jan. 2018 freeze that nailed all mangos but a Mallika.  It took 13F and gave me plenty of shoots to graft to.  It's now holding about 3 varieties one being Pineapple Pleasure.  Had a bad case of anthracnose so I sprayed it a couple of times with Pristine and MagnaBon, both systemics. 

You guys going commercial have a different hand to play.  I do know of one big time mango grower in Florida who was an organic purist until he quickly learned the hard way it doesn't work.  That op now sprays or rotates in such fungicides as Pristine.  Their fruit is wonderful.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on May 30, 2019, 11:01:09 AM
For those interested, here is a list of EPA Reduced Risk fungicides: https://www.epa.gov/pesticide-registration/reduced-risk-and-organophosphate-alternative-decisions-conventional (https://www.epa.gov/pesticide-registration/reduced-risk-and-organophosphate-alternative-decisions-conventional)

Sort by pesticide type and look for "F".

I wasn't able to achieve adequate control with organic products, but a mix of organic and RR has done reasonably well.

Good one!

What's ironical is the fact that most organophosphates are very biodegradable and quite safe compared to some of the chlorinated types like the old chlordane.    Take malathion for example.  It quickly breaks down into the harmless phosphate salt it was created from.  You have to know your pesticides.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on May 30, 2019, 02:23:23 PM
I was wondering about that myself.

What's ironical is the fact that most organophosphates are very biodegradable and quite safe compared to some of the chlorinated types like the old chlordane.    Take malathion for example.  It quickly breaks down into the harmless phosphate salt it was created from.  You have to know your pesticides.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Paquicuba on May 30, 2019, 03:47:58 PM
Thanks a lot guys for your replies. I know it's not fungus because it happened overnight after spraying the trees at night time. I guess I can only use Coco wet for palm trees and start using NIS.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on May 30, 2019, 06:30:35 PM
Wet foliage left overnight could cause a fungal infection on tender new leaves. Mango leaves at that stage are particularly vulnerable.

If it were due to the surfactant, I'd have expected larger lesions.

Thanks a lot guys for your replies. I know it's not fungus because it happened overnight after spraying the trees at night time. I guess I can only use Coco wet for palm trees and start using NIS.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gozp on May 30, 2019, 06:33:18 PM
What may have caused this?


(https://i.postimg.cc/t7g2YzS0/IMG-20190528-230810-680.jpg) (https://postimg.cc/t7g2YzS0)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 30, 2019, 08:30:36 PM
Beats me!

What low temperatures did those misshapened fruits go through?

What sources and amounts of Boron and Zinc have you provided?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gozp on May 30, 2019, 08:48:46 PM
Beats me!

What low temperatures did those misshapened fruits go through?

What sources and amounts of Boron and Zinc have you provided?

A week ago lowest i had was 43... now we are consistently getting 80 temps..


This is what i use down to earth citrus mix and seaweed.


(https://i.postimg.cc/CBrg3TsM/Screenshot-20190530-174715-Chrome.jpg) (https://postimg.cc/CBrg3TsM)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Orkine on May 30, 2019, 09:06:19 PM
I dont know what I need to do to fix this.

These are grafts on a recently top-worked tree.
The grafts took but the growth is anemic at best.  The leaves are tiny and even when there has been a second flush it sits right on the first making it look more like a rose than a mango (see fourth and fifth picture).

Should I feed this plant Nitrogen, it needs to grow.
I have or can get fertilizer with minors if that is what this baby needs.

(https://thumb.ibb.co/msGyxU/IMG_20180920_191702934.jpg) (https://ibb.co/msGyxU) (https://thumb.ibb.co/dpK7rp/IMG_20180920_191710775.jpg) (https://ibb.co/dpK7rp) (https://thumb.ibb.co/cycGj9/IMG_20180920_191713165.jpg) (https://ibb.co/cycGj9) (https://thumb.ibb.co/ffRnrp/IMG_20180920_191716615_BURST000_COVER_TOP.jpg) (https://ibb.co/ffRnrp) (https://thumb.ibb.co/byCSrp/IMG_20180920_191719308.jpg) (https://ibb.co/byCSrp)


This is my most recent graft on the same stump and the first flush here look more normal.  The blue dots are from a recent spray of copper.

(https://thumb.ibb.co/b7T0Bp/IMG_20180920_191659491.jpg) (https://ibb.co/b7T0Bp)

In case it is relevant, I don't irrigate or fertilize my lawn - which comes right up next to the tree.  I use a mulching mower to the grass clipping return to the soil.


It has been 3 months since this post and the plant nooks no different.
I want this plant to come back and want to put it on some regime for next season.
I will take very specific suggestions.
So far, I plan on fertilizing, including with nitrogen, once the cold passes.
I will test the soil to confirm that calcium is needed.
I will keep the plant warm through the winter.

Anything else?
Nothing I have tried on this tree has worked.  I am ready to try something drastic or cut the tree down to reclaim the spot.
I will take any suggestions even if failure kills the tree.  My only lemon zest was grafted onto the tree but I have one of everything else so its not a terrible loss.  I had just hoped to take advantage of what was once an extensive root system from a full grown tree.  I assume that by now most of the root system has likely died back.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on May 30, 2019, 11:18:24 PM
That's an odd one, but I'm pretty sure this is just a case of nutrient deficiency. What seems to happen is -- when a tree is initially planted there is adequate nutrition in the soil, and it grows OK. Over time, the soil gets depleted of nutrition as the tree grows. When you cut the tree back, it loses a major source of nutrition (the leaves) and now has to pull it anew from the soil, which is depleted.

If it were me, I'd invest in a high quality, slow release fertilizer with minors and nitrogen. I would also apply a separate microelement fertilizer. You're probably on sand, so you shouldn't have to worry about pH issues. Just be consistent with the fertlization and make sure to get something that is slow release.

I dont know what I need to do to fix this.

These are grafts on a recently top-worked tree.
The grafts took but the growth is anemic at best.  The leaves are tiny and even when there has been a second flush it sits right on the first making it look more like a rose than a mango (see fourth and fifth picture).

Should I feed this plant Nitrogen, it needs to grow.
I have or can get fertilizer with minors if that is what this baby needs.

(https://thumb.ibb.co/msGyxU/IMG_20180920_191702934.jpg) (https://ibb.co/msGyxU) (https://thumb.ibb.co/dpK7rp/IMG_20180920_191710775.jpg) (https://ibb.co/dpK7rp) (https://thumb.ibb.co/cycGj9/IMG_20180920_191713165.jpg) (https://ibb.co/cycGj9) (https://thumb.ibb.co/ffRnrp/IMG_20180920_191716615_BURST000_COVER_TOP.jpg) (https://ibb.co/ffRnrp) (https://thumb.ibb.co/byCSrp/IMG_20180920_191719308.jpg) (https://ibb.co/byCSrp)


This is my most recent graft on the same stump and the first flush here look more normal.  The blue dots are from a recent spray of copper.

(https://thumb.ibb.co/b7T0Bp/IMG_20180920_191659491.jpg) (https://ibb.co/b7T0Bp)

In case it is relevant, I don't irrigate or fertilize my lawn - which comes right up next to the tree.  I use a mulching mower to the grass clipping return to the soil.


It has been 3 months since this post and the plant nooks no different.
I want this plant to come back and want to put it on some regime for next season.
I will take very specific suggestions.
So far, I plan on fertilizing, including with nitrogen, once the cold passes.
I will test the soil to confirm that calcium is needed.
I will keep the plant warm through the winter.

Anything else?
Nothing I have tried on this tree has worked.  I am ready to try something drastic or cut the tree down to reclaim the spot.
I will take any suggestions even if failure kills the tree.  My only lemon zest was grafted onto the tree but I have one of everything else so its not a terrible loss.  I had just hoped to take advantage of what was once an extensive root system from a full grown tree.  I assume that by now most of the root system has likely died back.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 31, 2019, 10:07:21 AM
And if it is in sand, without a lot of visible limestone or shell-rock, and not being watered with limey canal or well water, then add gypsum.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 31, 2019, 10:13:01 AM
Gozp, that fertilizer mix looks pretty good.  The label is inadequate, as it doesn't bother to list Magnesium, Boron, Copper, Chloride, or Molybdenum, even though the source materials listed do have those ingredients.

The temperatures just a week ago are not relevant, as those contortions of the fruits occurred way before that.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on May 31, 2019, 10:19:21 AM
Thanks a lot guys for your replies. I know it's not fungus because it happened overnight after spraying the trees at night time. I guess I can only use Coco wet for palm trees and start using NIS.

I'd say it's the Keyplex causing the burn then.  Hoo nose?  1 oz/gal. is hitting it pretty heavy and if I had to guess the label didn't differentiate between young or mature foliage.  Rate might be OK if the foliage is mature and hardened off.  Big time phytotoxicity on that tender red foliage.  Have been using Keyplex 350 for years but I don't think I've ever done more than 1 maybe 2 tps. per gallon and that was using rainwater cause it's soft.  Surfactants can also burn.  You just need to find that "happy place" with your program.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Orkine on May 31, 2019, 11:01:48 PM
And if it is in sand, without a lot of visible limestone or shell-rock, and not being watered with limey canal or well water, then add gypsum.
Thanks, will try this.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on June 03, 2019, 06:11:02 PM
Is this some sort of bacterial disease on my lemon zest. Some earlier leaves are drying up and I noticed tiny bumpy dots on upper leaves. Older leaves are still green, seems only newer leaves are effected. Thanks in advance.

(https://i.postimg.cc/jnhqQDtv/8-AF5-B183-0382-403-C-A27-B-1-E3-ABACF11-AB.jpg) (https://postimg.cc/jnhqQDtv)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 03, 2019, 09:32:29 PM
The tender growth at the bottom of the picture appears to be infected with powdery mildew.  At the top of the picture, the topmost left leaf with midrib silhouetted against the white wall, appears to have a row of ... aphids maybe?  the tiny white spots on the other leaves kind-of look like galls from insect bites, maybe.

I don't see anything to urgently address.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on June 03, 2019, 10:40:31 PM
The tender growth at the bottom of the picture appears to be infected with powdery mildew.  At the top of the picture, the topmost left leaf with midrib silhouetted against the white wall, appears to have a row of ... aphids maybe?  the tiny white spots on the other leaves kind-of look like galls from insect bites, maybe.

I don't see anything to urgently address.

Thanks Har.
Title: Amazing Mango Tree has become ill and I need help to fix it
Post by: smacke01 on June 08, 2019, 12:01:39 PM
Hi Everybody,

I have an amazing mango tree in my backyard and last year it got sick.  It produces A LOT of fruit and last year all the fruit was rotten with little bugs infecting the fruit before the fruit would drop.  The entire crop was destroyed.  My yard guy said it was white fly and he treated it with some pesticide (not sure name) around the roots.  He said it should be fine next year.  Well it's not.  The tree is again producing an amazing quality and quantity of fruit on the tree, but as they are now dropping they are all infested again and rotten.  Please help me treat this tree back to health.  I have attached some pics to show as much as I can of the fruit and the tree as well as the soil it is in.  I also do not know the type of mango tree this is.

Thanks in advance for any suggestions or direction how to fix my tree.

Steve


(https://i.postimg.cc/z3Gp8gFH/IMG-0366.jpg) (https://postimg.cc/z3Gp8gFH)

(https://i.postimg.cc/Bt7p6nmY/IMG-0367.jpg) (https://postimg.cc/Bt7p6nmY)

(https://i.postimg.cc/9DZYJtCK/IMG-0369.jpg) (https://postimg.cc/9DZYJtCK)

(https://i.postimg.cc/0b6fJ138/IMG-0371.jpg) (https://postimg.cc/0b6fJ138)

(https://i.postimg.cc/crVcR5yf/IMG-0372.jpg) (https://postimg.cc/crVcR5yf)

(https://i.postimg.cc/PLMzkXLM/IMG-0373.jpg) (https://postimg.cc/PLMzkXLM)

(https://i.postimg.cc/34Jj8smQ/IMG-0374.jpg) (https://postimg.cc/34Jj8smQ)

(https://i.postimg.cc/hJnbwzGj/IMG-0375.jpg) (https://postimg.cc/hJnbwzGj)

(https://i.postimg.cc/5QXwv8sP/IMG-0377.jpg) (https://postimg.cc/5QXwv8sP)

(https://i.postimg.cc/vgqrc0tg/IMG-0378.jpg) (https://postimg.cc/vgqrc0tg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on June 08, 2019, 02:11:10 PM
smacke01, you have Mango Bacterial Black Spot, probably one of the worst diseases to affect the mango here in FL at the moment.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on June 08, 2019, 02:43:02 PM
Quote
My yard guy said it was white fly

You should ask him for a refund.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on June 08, 2019, 05:38:05 PM
HAHAHA

Quote
My yard guy said it was white fly

You should ask him for a refund.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 08, 2019, 06:24:32 PM
Ridiculous yard guy.

Besides Mango Bacterial Black Spot --- the smaller, coal-black, raised spots  with splits and lines of ooze running down--- your mangos also appear to severe cases of "The Rot"--- the very big brown spots.

Your mango is a Kent--- no longer recommended for new plantings, precisely because of what you are seeing.

Check your fruits three times a week, immediately removing from your tree and from your yard, any infected ones, before the ooze gets dissolved and spread by rain.

Spraying with a Copper Fungicide/Bactericide may also help a little, but SANITATION HARVESTING will help the most.













Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on June 09, 2019, 08:00:19 AM
That's really a shame.  One way to control that is with a high pressure gun, like 200 psi to drench the foliage.  A soil drench of a copper systemic like MagnaBon CS2005 or K-PHITE 7LP might work but then again those roots may be out in the next county by now.  Problem is getting the stuff into the tree which may mean an injection into the xylem.

Best solution?  Replace with what works with minimal inputs.

Good luck!

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: BPelkey on June 09, 2019, 07:34:22 PM
Hello again,
Today I was cutting a rotting branch off a Cogshall Mango and and found this worm (borer?) inside the branch.  Any idea what it is and the best method to eliminate it?


(https://i.postimg.cc/YjFFR8t7/IMG-20190609-143709.jpg) (https://postimg.cc/YjFFR8t7)

(https://i.postimg.cc/f3kt9f86/IMG-20190609-143716.jpg) (https://postimg.cc/f3kt9f86)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: ivan79 on June 10, 2019, 06:00:37 PM
Hello all.. I have a malika mango tree that is 5 year old,this is the 3 year fruiting  :) grafted tree from PIN.,the fruits have grown big and tast great, I give them a 8 of 10 but my wife gives them a 10 of 10.Anyways :)
The fruit ones ripen, they have a deformation inside that sometimes half of the mango is gone, can this be a genetic problem? Or is there something I'm doing wrong when fertilizing?
(https://i.postimg.cc/TpJBkDXS/20190610-174801.jpg) (https://postimg.cc/TpJBkDXS)

(https://i.postimg.cc/gnWfqK18/20190610-174803.jpg) (https://postimg.cc/gnWfqK18)

(https://i.postimg.cc/vD9JVK2G/20190610-174811.jpg) (https://postimg.cc/vD9JVK2G)

(https://i.postimg.cc/wRhnYtR1/20190610-174822.jpg) (https://postimg.cc/wRhnYtR1)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 11, 2019, 10:26:14 PM
BPelky, I don't know that white grub, presumably a larva of a beetle.  If it is simply eating dead, rotten wood, we wish it well.  I can't tell from the photos if it harmed live wood.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on June 11, 2019, 10:32:16 PM
I"m assuming that the large branch that you cut back had some damage to it, which caused the dead wood visible in the photo. I agree with Har that the grub / worm is simply chomping on already dead wood.

Hello again,
Today I was cutting a rotting branch off a Cogshall Mango and and found this worm (borer?) inside the branch.  Any idea what it is and the best method to eliminate it?

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on June 11, 2019, 10:33:07 PM
My mallika routinely get that as well. I don't know what causes it, but some mangoes seem more prone to it than others.

Hello all.. I have a malika mango tree that is 5 year old,this is the 3 year fruiting  :) grafted tree from PIN.,the fruits have grown big and tast great, I give them a 8 of 10 but my wife gives them a 10 of 10.Anyways :)
The fruit ones ripen, they have a deformation inside that sometimes half of the mango is gone, can this be a genetic problem? Or is there something I'm doing wrong when fertilizing?

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 11, 2019, 10:35:41 PM
Ivan79, that "internal break-down" is usually thought to be a result of not enough Boron; or Calcium deficiency; or, indirect Calcium deficiency, due to deficiency of Copper or Zinc or Magnesium or Boron; or due to too much Nitrogen.  Likely, a mix of these interpretations.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gychang on June 20, 2019, 03:00:57 AM
Anyone know what this is? I think it may be Anthracnose. I’ve been looking up diseases and they’re starting to look the same to me. Thanks!
(https://i.postimg.cc/9zPPCYD7/01-F52-F45-3-CF9-46-F0-9-A1-E-118437734-CC7.jpg) (https://postimg.cc/9zPPCYD7)

(https://i.postimg.cc/6TxVkmpK/F2-E0-B01-F-5-C20-4283-ACDC-657-EC1-EE514-A.jpg) (https://postimg.cc/6TxVkmpK)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 20, 2019, 12:22:16 PM
Gychang, Yes, the leaf spots, and a few small darker spots on the twig, do look like anthracnose.  The shadowy smudges on the twigs are probably harmless surface growths, probably some sort of mold.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gychang on June 20, 2019, 11:22:47 PM
Gychang, Yes, the leaf spots, and a few small darker spots on the twig, do look like anthracnose.  The shadowy smudges on the twigs are probably harmless surface growths, probably some sort of mold.

Thanks Har! Good to know the smudges on the branch’s are not Anthracnose. They’re actually two different trees so I’ll be able to treat just the one with the spots.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on June 21, 2019, 01:05:30 PM
The tender growth at the bottom of the picture appears to be infected with powdery mildew.  At the top of the picture, the topmost left leaf with midrib silhouetted against the white wall, appears to have a row of ... aphids maybe?  the tiny white spots on the other leaves kind-of look like galls from insect bites, maybe.

I don't see anything to urgently address.

Har, you are spot on, my LZ fended of PM and now growing nicely :)


(https://i.postimg.cc/Z02kFxjg/1-F4-EC4-E4-D520-4-B95-80-C6-23-AA182-E3-C89.jpg) (https://postimg.cc/Z02kFxjg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 21, 2019, 03:19:26 PM
Powdery Mildew usually isn't very active in hot weather.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gychang on June 28, 2019, 01:32:21 AM
Doesn't look like mbbs on the LZ. Not sure which nutrient is lacking (zinc, mn, mg, fe), but I've been able to convert that into green via the following program:

 - Hars 0-3-16 once every 3 - 4 months
 - Helena's micronutrient mix (0-0-6) once a year

Hi all! When you guys say Hars 0-3-16, is hars the brand or are you buying from jar the person on this forum?  I’m having trouble googling it. Thanks!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 28, 2019, 11:31:14 AM
The 0-3-16 custom mix, referred to here, is my formulation / customer request, which the manufacturer then modified to accommodate the WolfTrax minor elements products, instead of the chelates that I had requested.  The manufacturer is Wedgeworth's Inc., in Belle Glade, Florida.

This is so far only available in Palm Beach County: 1) To members of the local chapter of the Rare Fruit Council, at their twice-a-year plant sales, or by special arrangement at the monthly meetings;  2) To walk-in customers at Truly Tropical in Delray Beach;  3) to my customers, in conjunction with consultations or fruit tree service visits, in Palm Beach and Boward Counties.

Other fruit clubs, or joint-ordering groups, could carry this.   The MINIMUM ORDER is FOUR TONS, because it is a custom mix, that no warehouse carries.  The factory delivers all over south and central Florida.

The formula may be imitated by others.  I do not have any exclusivity, or earn any commission on anyone's order.

The distributor that we deal with is Mr. Kriss Ramroop, Plant Health Solutions.  krissramroop@gmail.com
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Oolie on June 28, 2019, 11:41:28 AM
If you don't mind sharing the formulation, I'm sure there's a few on the West Coast who would love to imitate it.

Especially if the formulation is quick-release/water soluble.

Fertigation is quickly catching on here due to arid climate/imported water.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: willsmith1686 on July 01, 2019, 04:47:04 AM
I was looking at a website for tips on my own mango problems shortly before reading your post. Couple of bits on this site that sound like what you are talking about...

https://docsbay.net/mango-diseases-and-their-control

Hope that helps.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tropical-farmer on July 29, 2019, 12:10:21 PM
Going around my yard this morning i noticed all the mango trees that flushed in the last 1-2 weeks have this weird curly pattern. I did not notice any bugs on the undersurface or on top and do not see any discoloration in the leaves. Could this be a response to the drought in this area, the north miami beach did not get a good rain in the last 2 weeks. Could this be some nutritional deficiency? Surprising is that the trees in the same area that flushed a few weeks back and have enlarged leaves and show no deficiency, and these affected trees are scattered around the yard. Even a potted Nam doc mai has new flushes that showed this.
Any suggestions will be appreciated.


(https://i.postimg.cc/2qh66NZV/IMG-6824.jpg) (https://postimg.cc/2qh66NZV)

(https://i.postimg.cc/D80wGXGV/IMG-6825.jpg) (https://postimg.cc/D80wGXGV)

(https://i.postimg.cc/ThCPh9pq/IMG-6826.jpg) (https://postimg.cc/ThCPh9pq)

(https://i.postimg.cc/VJbsGP4D/IMG-6827.jpg) (https://postimg.cc/VJbsGP4D)

(https://i.postimg.cc/hJWDNZ5g/IMG-6828.jpg) (https://postimg.cc/hJWDNZ5g)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tommyng on July 29, 2019, 04:06:08 PM
To see if these trees really need water you have to dig around in the dirt and see if it’s dry. Zinc deficiency can cause curling. Have you been fertilizing these trees recently?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tropical-farmer on July 29, 2019, 04:35:10 PM
I haven’t fertilized them. They dont get city water. I collect rain water and have been using them in buckets whenever dry period starts. Some of the trees have been in ground for 1 yr now and were bought as 7 gallons last year.
The soil is dry and the thick mulch isnt helping due to high heat and lack of rain. But is it common to have leaf curl due to drought, is it a mechanism of the plant to reduce loss of moisture? I will look into zinc deficiency, and how these curly leaf will look as they grow bigger. They have flushed many times before but never had this problem.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tommyng on July 29, 2019, 04:57:22 PM
Try making a berm around the trees when you water them. It’s likely the heat and not enough water causing the curling because drought conditions curl leaves on other trees.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Oolie on July 29, 2019, 05:29:52 PM
Drought can exacerbate zinc deficiency.

http://vikaspedia.in/agriculture/crop-production/integrated-pest-managment/ipm-for-fruit-crops/ipm-strategies-for-mango/nutritional-deficiencies-of-mango (http://vikaspedia.in/agriculture/crop-production/integrated-pest-managment/ipm-for-fruit-crops/ipm-strategies-for-mango/nutritional-deficiencies-of-mango)

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tropical-farmer on July 29, 2019, 05:56:27 PM
Drought can exacerbate zinc deficiency.

http://vikaspedia.in/agriculture/crop-production/integrated-pest-managment/ipm-for-fruit-crops/ipm-strategies-for-mango/nutritional-deficiencies-of-mango (http://vikaspedia.in/agriculture/crop-production/integrated-pest-managment/ipm-for-fruit-crops/ipm-strategies-for-mango/nutritional-deficiencies-of-mango)

thanks. Seems like drought and zinc deficiency is the case. Is there a way to provide  zinc through soil irrigation rather than foliar spray?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Oolie on July 29, 2019, 06:01:52 PM
Drought can exacerbate zinc deficiency.

http://vikaspedia.in/agriculture/crop-production/integrated-pest-managment/ipm-for-fruit-crops/ipm-strategies-for-mango/nutritional-deficiencies-of-mango (http://vikaspedia.in/agriculture/crop-production/integrated-pest-managment/ipm-for-fruit-crops/ipm-strategies-for-mango/nutritional-deficiencies-of-mango)

thanks. Seems like drought and zinc deficiency is the case. Is there a way to provide  zinc through soil irrigation rather than foliar spray?
No, Zinc is very immobile in soil, so consistent foliar applications are required to combat deficiency of this essential micro-nutrient.

If the tree responds well to regular foliar applications, it can "outgrow" the issue, but in many situations this does not happen. It depends on a number of factors. I had an 'Aloha' in a pot that had this real bad, but I put it in the ground and it responded extraordinarily.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tropical-farmer on July 29, 2019, 09:23:28 PM
Thanks Oolie, i did a citrus foliar spray this evening. It seems to have zinc together with manganese, copper and sulphur in it so hope this will help. There is some rain predicted in 2-3 days so hoping for the best. The vikaspedia link was also very helpful.
Title: Nam Doc Mai Suddenly Dying
Post by: BPelkey on August 15, 2019, 07:27:48 PM
This Nam Doc Mai mango was planted early this year and was growing nicely.  It looked good.

About 2 days ago 2 of 3 branches started to droop, and now they appear dead.  Where the leaves connect to the branches, and where the branches connect to the trunk, sap is oozing. 

Can anyone identify the probable cause and any solutions?

Ignore the black strings in the pics, they are holding to plant to the stakes.

(https://i.postimg.cc/wyQ5h00j/IMG-20190815-135616.jpg) (https://postimg.cc/wyQ5h00j)

(https://i.postimg.cc/wR3t7VrP/IMG-20190815-135639.jpg) (https://postimg.cc/wR3t7VrP)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tommyng on August 15, 2019, 07:52:56 PM
Is this tree in a lot of shade? I had a Nam doc Mai with a similar problem. It was a fungal infection. I used a copper spray. Cut off dead branches and took it out from under a banana tree so it could get better light. It healed up and flushing.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: BPelkey on August 15, 2019, 07:55:37 PM
This tree is in partial shade, but mostly full sun.  Pruning plus Copper seems like a good suggestion, thanks.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tommyng on August 15, 2019, 08:20:57 PM
Don’t prune, just cut off dead material.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FloridaBoy on August 15, 2019, 09:28:38 PM
I'll post pictures soon but maybe you guys can help in the meantime.  I have a little sientalone tree that is flushing out and it seems like a bunch of small red ants have made it their new home.  I dont know if theyre damaging the tree but it doesnt look good to me.  I will say that this happened on another graft I had that was flushing out.  Has anyone heard of these little red ants camping out on new leaf growth?
Title: Re: Nam Doc Mai Suddenly Dying
Post by: simon_grow on August 15, 2019, 09:31:44 PM
This Nam Doc Mai mango was planted early this year and was growing nicely.  It looked good.

About 2 days ago 2 of 3 branches started to droop, and now they appear dead.  Where the leaves connect to the branches, and where the branches connect to the trunk, sap is oozing. 

Can anyone identify the probable cause and any solutions?

Ignore the black strings in the pics, they are holding to plant to the stakes.

(https://i.postimg.cc/wyQ5h00j/IMG-20190815-135616.jpg) (https://postimg.cc/wyQ5h00j)

(https://i.postimg.cc/wR3t7VrP/IMG-20190815-135639.jpg) (https://postimg.cc/wR3t7VrP)

You really need to send in tissue samples for definitive diagnosis but it looks like the vascular tissue is dying so it could be Phomopsis or some other form of die back, potentially caused by fungi. Die back can be caused by organisms other than Phomopsis.

A systemic Fungicide may help your plant.

Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: simon_grow on August 15, 2019, 09:34:28 PM
I'll post pictures soon but maybe you guys can help in the meantime.  I have a little sientalone tree that is flushing out and it seems like a bunch of small red ants have made it their new home.  I dont know if theyre damaging the tree but it doesnt look good to me.  I will say that this happened on another graft I had that was flushing out.  Has anyone heard of these little red ants camping out on new leaf growth?

Ants can farm aphids, mealybugs and the honeydew excreted by these sucking insects can grow sooty mold. It’s best to get them off your tree by using something like tanglefoot

Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Oolie on August 16, 2019, 12:12:17 AM
I have only known Argentinian ants to farm aphids and mealybugs.

In Europe they spray a Calcium Oxide (lime) mix on the trunks of fruit trees to deter ants.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 16, 2019, 07:56:05 AM
Contact the Plant Diagnostic Clinic at the Tropical Research and Education Center, Homestead, Florida.  There is a reasonable fee.  They will want your pictures, including of the whole plant in its surroundings, and a still alive part of the plant that is infected.  If you wait until the whole plant is dead, don't send it, as it will just be thrown out.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FloridaBoy on August 16, 2019, 08:42:40 AM
I'll post pictures soon but maybe you guys can help in the meantime.  I have a little sientalone tree that is flushing out and it seems like a bunch of small red ants have made it their new home.  I dont know if theyre damaging the tree but it doesnt look good to me.  I will say that this happened on another graft I had that was flushing out.  Has anyone heard of these little red ants camping out on new leaf growth?

Ants can farm aphids, mealybugs and the honeydew excreted by these sucking insects can grow sooty mold. It’s best to get them off your tree by using something like tanglefoot

Simon

Thanks Simon,

Why are ants so dang smart?  So they chose my plant of all plants too.  Do they particularly only focus on new growth shoots?

Best Regards,

Alex
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: simon_grow on August 16, 2019, 11:44:20 AM
Not sure why but I’ve also seen ants nest in air layers placed in Lychee trees under the plastic wrap and aluminum foil. I’ve also found and nests in my potted mango trees, living in the soil of the pot.

If the ants are mostly on the new growth, you should keep your eyes out for sucking insects as sucking insects like aphids prefer newer growth.

Maybe observe them for a bit to see what they’re actually doing.

Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: SHV on August 16, 2019, 04:43:37 PM
I could use some help with a persistent problem on my Sensation Mango seedling.  This has been in the ground for 3 years, but is a 6-7 year old tree.  It produced its first fruit this year, 1 mango   8) but as long as it's been in the ground, ~50% of the new growth has a black crusty line that forms along the midrib of each leaf.  You can see it clearly in the images.  Also, a good portion of that new growth forms small leafs that often never fully develop, curl, then shrivel up and die.  Those leaves that do form normally without the black midrib are small in size (4-6 inch) compared to the leaves (8-12 in+) on my other healthy mango trees. You can see the shriveled leaf litter on the ground.  I have tried a systemic fungicide, foliar sprays (fish emulsion/Kelp), 16-16-16 pellet fertilizer with iron, zinc, manganese micronutrients.  None of these seem to eliminate the problem.  Any thoughts on this issue?  Thanks in advance!

(https://i.postimg.cc/WqN6jFhP/IMG-2618.jpg) (https://postimg.cc/WqN6jFhP)

(https://i.postimg.cc/zbSS9SDj/IMG-2619.jpg) (https://postimg.cc/zbSS9SDj)

(https://i.postimg.cc/JyXQQC9S/IMG-2620.jpg) (https://postimg.cc/JyXQQC9S)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 16, 2019, 09:04:07 PM
The leaves are probably deficient in Boron, Copper, and Zinc.

Also one needs to pull away from the trunk, anything that impedes air movement at the root-crown in rainy weather.  We prefer to see the the starting point from the root crown, of the highest root on each side.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: simon_grow on August 16, 2019, 10:15:00 PM
SHV, I agree with Har. Also, if you’ve been using all those fertilizers within a short time period, you can get nutrient lock.

What kind of watering system are you using? You should be watering around the drip line and expanding out as the tree grows. Your tree is still small so it doesn’t need too much water but if you have fast draining soil, you may need to water more.

For major nutrients, ground feed with slow release pellets unless your trees are being fertigated. For the minors and trace, Foliar feeding during active stages of growth in the evening combined with a spreader sticker should do the trick.

Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: SHV on August 16, 2019, 11:36:19 PM
Thank you Har and Simon for your observations and recommendations.  I will take these into consideration as I attempt to correct the nutrient deficiencies.  I am not using a surfactant when I foliage feed, so that should be an easy fix. Currently, I foliar spray every month since May and add slow release fertilizer every 8 weeks. Perhaps that’s a bit much.  I have clay/dg soil surrounding this tree that seems to drain fairly well, and water near the tree base with a vortex spray stake at ~15 gph for 30 mins twice a week during summer.
Thanks again!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on August 17, 2019, 03:06:22 PM
My LZ leaves are half open like in the picture and never fully open. Is it due to lack of water or any minerals? Or, is it normal for LM? Thanks for your input.


(https://i.postimg.cc/NLgGLWSf/9-DFA369-E-BD71-46-C6-A3-AA-B70-CE6-F71-E2-C.jpg) (https://postimg.cc/NLgGLWSf)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: simon_grow on August 17, 2019, 08:38:12 PM
There are multiple things that can cause the leaves to curl up. It can often be caused by environmental stress like excessive heat. I can see that your older leaves have the curl but do the young ones have it as well? Do you see yellowing on the leaves with the curl?

If you see some yellowing on the older curled leaves, it could indicate a Magnesium deficiency. Also, are you overwatering? If you check your soil right now, is it moist?

Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: simon_grow on August 17, 2019, 08:55:48 PM
LZ does have curly and slightly cupped leaves but the angle of your picture makes it look like some of the leaves are completely cupped up. I just checked my tree and depending on the angle of the picture, it can look overly cupped when I’m reality it’s just normal for LZ.

If you see yellowing, it could be Magnesium deficiency.

Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on August 17, 2019, 10:12:21 PM
Simon, I just checked the leaves and they don’t seem to have any yellowing; however, newer leaves have some red/black dots along the midrib. The soil is still moist, I do water everyday with 20-20-20 at slow setting with an ezflo.


(https://i.postimg.cc/crKcF695/10019420-0-EEA-42-BE-90-EA-168642-DB06-D6.jpg) (https://postimg.cc/crKcF695)

Update: I am suspecting over fertilization (21-5-20 and 20-20-20) along with 100+ F days are behind the leaf curling. I switched to regular watering with no fertilizer and hoping LZ will be back to healthy state in no time.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: BR on August 18, 2019, 12:13:44 PM
Hi all, I just came into care of this tree a few months ago. I'm suspecting there are multiple problems here so I wanted to get the experts opinion on what cocktail to solve it with. From browsing this thread it looks like sooty mold + anthracnose. The fruit set this year was poor and almost all fruit was damaged. I don't know the cultivar (Haden?) so I attached a picture of the tree if anyone can ID it. Thanks in advance.


(https://i.postimg.cc/mcC05m4N/IMG-6990.jpg) (https://postimg.cc/mcC05m4N)

(https://i.postimg.cc/rz8vfGPx/IMG-6991.jpg) (https://postimg.cc/rz8vfGPx)

(https://i.postimg.cc/5jnDTHhG/IMG-6992.jpg) (https://postimg.cc/5jnDTHhG)

(https://i.postimg.cc/qNCYN1NV/IMG-6993.jpg) (https://postimg.cc/qNCYN1NV)

(https://i.postimg.cc/4myjgfZ3/IMG-6994.jpg) (https://postimg.cc/4myjgfZ3)

(https://i.postimg.cc/qzFSBPMx/IMG-6995.jpg) (https://postimg.cc/qzFSBPMx)

(https://i.postimg.cc/4m4H40Fy/IMG-6965.jpg) (https://postimg.cc/4m4H40Fy)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: BR on August 18, 2019, 12:23:01 PM
While I'm at it here is a totally different tree (Pickering) which has been stuck in a 3 gal pot for longer than I would like due to the heavy rains.


(https://i.postimg.cc/Lqyg13YR/IMG-7002.jpg) (https://postimg.cc/Lqyg13YR)

(https://i.postimg.cc/n9mXN8dc/IMG-7004.jpg) (https://postimg.cc/n9mXN8dc)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Victoria Ave on August 18, 2019, 01:14:33 PM
Hawkfish,

I would suspect you are over watering and over fertilizing. I am in riverside and we are getting hot temps as well but my trees get water twice a week, including my mango in pots and they are doing well. I've killed trees in the past from both under and over watering. But they died a whole lot quicker from overwatering.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 18, 2019, 01:56:58 PM
Mango Bacterial Black Spot---leaf form.

Copper sprays, and other anti-bacterials, and nutritionals to strengthen the tree.  De-emphasize Nitrogen.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Oolie on August 18, 2019, 04:10:14 PM
Here (http://agritech.tnau.ac.in/horticolture/horti_min_fruits_mango.html) is a good link with photos for nutrient deficiency.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: BR on August 18, 2019, 05:56:15 PM
Mango Bacterial Black Spot---leaf form.

Copper sprays, and other anti-bacterials, and nutritionals to strengthen the tree.  De-emphasize Nitrogen.

Thanks for the help, Har.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on September 01, 2019, 01:05:31 PM
It appears I was over fertilizing my trees with 20-20-20 on ez-flo medium setting. I stopped applying 20-20-20 about 2 weeks ago and added some bio flora to my LZ, but didn’t change watering frequency or duration. It has rebounded nicely since :) (it was a 3 gallon stick from plantogram, planted last November)

(https://i.postimg.cc/dk0fKRW7/1573268-C-7377-4-AF7-AFA4-EBCD9-E41-C80-C.jpg) (https://postimg.cc/dk0fKRW7)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Orkine on September 13, 2019, 09:17:29 PM
A newbie (Ruby93) needs help.  He/She posted a mango disease question at link below.
Can anyone help with his symptoms? Or can an admin move his post here so it will get some attention?

(Title is Young Mango Tree - Help!!)
http://tropicalfruitforum.com/index.php?topic=33477.0 (http://tropicalfruitforum.com/index.php?topic=33477.0)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Orkine on September 14, 2019, 05:43:45 PM
I dont know what I need to do to fix this.

These are grafts on a recently top-worked tree.
The grafts took but the growth is anemic at best.  The leaves are tiny and even when there has been a second flush it sits right on the first making it look more like a rose than a mango (see fourth and fifth picture).

Should I feed this plant Nitrogen, it needs to grow.
I have or can get fertilizer with minors if that is what this baby needs.

(https://thumb.ibb.co/msGyxU/IMG_20180920_191702934.jpg) (https://ibb.co/msGyxU) (https://thumb.ibb.co/dpK7rp/IMG_20180920_191710775.jpg) (https://ibb.co/dpK7rp) (https://thumb.ibb.co/cycGj9/IMG_20180920_191713165.jpg) (https://ibb.co/cycGj9) (https://thumb.ibb.co/ffRnrp/IMG_20180920_191716615_BURST000_COVER_TOP.jpg) (https://ibb.co/ffRnrp) (https://thumb.ibb.co/byCSrp/IMG_20180920_191719308.jpg) (https://ibb.co/byCSrp)


This is my most recent graft on the same stump and the first flush here look more normal.  The blue dots are from a recent spray of copper.

(https://thumb.ibb.co/b7T0Bp/IMG_20180920_191659491.jpg) (https://ibb.co/b7T0Bp)

In case it is relevant, I don't irrigate or fertilize my lawn - which comes right up next to the tree.  I use a mulching mower to the grass clipping return to the soil.


It has been 3 months since this post and the plant nooks no different.
I want this plant to come back and want to put it on some regime for next season.
I will take very specific suggestions.
So far, I plan on fertilizing, including with nitrogen, once the cold passes.
I will test the soil to confirm that calcium is needed.
I will keep the plant warm through the winter.

Anything else?
Nothing I have tried on this tree has worked.  I am ready to try something drastic or cut the tree down to reclaim the spot.
I will take any suggestions even if failure kills the tree.  My only lemon zest was grafted onto the tree but I have one of everything else so its not a terrible loss.  I had just hoped to take advantage of what was once an extensive root system from a full grown tree.  I assume that by now most of the root system has likely died back.
.. and the tree is dead,. I will be pulling it or cutting flush and using the space for 2 new plants.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Oolie on September 14, 2019, 09:20:31 PM
when you dig it up, check for root development. Sometimes plants decline due to being pot bound/circling roots.

Though the problem appears to be classic Zinc deficiency.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Orkine on September 15, 2019, 09:37:12 AM
I will.  I think this is more me than anything else.  I cut a full grown tree to 3 feet to topwork it.  Grafted on to the regrowth and removed most of the extra growth to focus all the energy on my grafts.  To compound it, my cut was horizontal allowing the cut surface to stay wetter than it should, invitation to infection.
I think, with all the loss of vegetation, that the roots died back and without the proper additional care, I may have push passed some tipping point.

My new top work projects after this are done in sections, a third of the tree at a time and all three trees I have done since are thriving.

I am not distraught, I plan on getting two trees more closely spaced into the spot taken up by the Lancentilla.  This time, I hope the to have trees that will stay small(er).

Thanks for all the advice and suggestions to save this tree.  Very much appreciated.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Z070305 on September 16, 2019, 10:21:16 PM
I don't have images to share, but one plot of land that I have is currently facing issues of termites infestation.

It started with wings on one of the potted mango plant. I didn't pay much attention to that and it didn't occur to me that termites have landed on that pot too. Fast forward several weeks, I started noticing holes on the soil. Upon closer inspection, I discovered termites. They burrowed themselves all the way down to the soil beneath the pots. While the plants look healthy, I discovered that the roots were several destroyed and I had no choice but to discard multiple pots of plants. I have tried various methods but termites are persistent. Currently still fighting a battle with them
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 17, 2019, 08:53:34 AM
In Brazil, in the 1960's and 1970's, we bought little glass bottles with a cork, containing Arsenate powder.  We would break about an inch of the covering of a termite trail, and then tap the bottle to drop a little powder into the trail.  As it did not kill quickly, it got distributed all through the nest.  Finished.  I checked the stilts of the houses monthly, for new trails going up the outsides of the stilts--- the stilts were all of woods which termites will not burrow into.

I have no idea if this is currently available anywhere.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Oolie on September 18, 2019, 12:22:52 AM
I'm not finding much on the internet, so I thought I'd ask the experts.

I believe this is a cultivar specific phenomenon, because Lemon Zest is the only one with the problem, but all the petioles on the leaves are cracking. I first noticed it on the older leaves, but even the new ones have it.

LZ is the only tree out of 14 showing this symptom.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 18, 2019, 11:06:06 AM
Try increasing nutritional levels of Copper and Boron and Calcium, especially sprayed, to lessen splitting, or at least to lessen infections at the splits.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Oolie on September 18, 2019, 04:20:33 PM
I will, but I was under the impression that mangoes take up foliar applied nutrients best before growth hardens off. This symptom occurs on the hardened off growth, but not long after hardening.

Luckily in this location there doesn't seem to be enough humidity to promote infection. That hasn't stopped me from taking precautions.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 18, 2019, 08:14:27 PM
To be clear, I have never heard a specific nutritional cause for petiole splitting.

I have heard a claim, probably unsubstantiated, about Copper deficiency's being one of the causes of bark splitting.

And Boron deficiency is sometimes listed as contributing to fruit splitting.   And Calcium is always listed as strengthening cell walls, etc.  Could add Silicon to this list, and others.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Oolie on September 18, 2019, 08:19:36 PM
Thank you Har. I will make sure to experiment with this tree, as other LZ tree photos on this site do not show the same symptom, and I'm unable to turn up any other clues.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on September 20, 2019, 08:17:01 AM
My Baptiste has oozed gummosis from various spots that seemed to have healed. This spot, however, grows. I spray it with Liquid Copper Fungicide. But, it grows.

It produced one fruit this year, which I liked. It has new growth that looks great.

What should I do?

Thanks!

(https://i.postimg.cc/Lg6w5VCF/20190920-072653-1.jpg) (https://postimg.cc/Lg6w5VCF)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 20, 2019, 09:20:10 AM
You can cut out all the visible infection, sterilize the fresh wound with hydrogen peroxide, let dry, then spray with Copper.  Stake the tree, so that wind doesn't break the tree off at the wound, or crack it further.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fisherking73 on October 13, 2019, 09:04:01 AM
Brother in law sent me these pics of his Pickering. Says he has not fertilized much and water only from sprinklers. Aside from the obvious things I already mentioned to him as far as clearing the base from grass,  mulch. It still looks like some sort of chemical fert burn? And definitely some sort of deficiency, my best guest was magnesium. Any thoughts?
(https://i.postimg.cc/94thWLbB/592613682.jpg) (https://postimg.cc/94thWLbB)

(https://i.postimg.cc/cgFG36Vg/592613697.jpg) (https://postimg.cc/cgFG36Vg)

(https://i.postimg.cc/5Y4Mj8kW/592613728.jpg) (https://postimg.cc/5Y4Mj8kW)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Oolie on October 13, 2019, 01:59:24 PM
It appears to be damage to older growth, and the tree received fertilizer which has improved the newer growth.

It seems you have identified the root of the issue, the irrigation method which promotes shallow root development and salt buildup in soil.

The older micronutrient deprived leaves rarely improve in appearance, the best thing would be to mulch to 1.5x the dripline and switch to a deeper watering method which can flush the salts from the soil.
http://vikaspedia.in/agriculture/crop-production/integrated-pest-managment/ipm-for-fruit-crops/ipm-strategies-for-mango/nutritional-deficiencies-of-mango (http://vikaspedia.in/agriculture/crop-production/integrated-pest-managment/ipm-for-fruit-crops/ipm-strategies-for-mango/nutritional-deficiencies-of-mango)

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 13, 2019, 11:15:52 PM
Deficient in Potassium and Iron and several other nutrients.

Most mangos that I see looking like this were planted in sizable planting holes with lots of potting soil or compost in the hole.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on October 20, 2019, 10:42:26 AM
Deficient in Potassium and Iron and several other nutrients.

Most mangos that I see looking like this were planted in sizable planting holes with lots of potting soil or compost in the hole.

Quickest way to kill a tree planted in heavy clay soil is to amend the backfill with compost and/or sand.  But that's what the label says, so it must be right.  ;D  Being that Florida soils seem to be pretty sandy I doubt if ya'll have this problem.  https://s3.wp.wsu.edu/uploads/sites/403/2015/03/soil-amendments.pdf



Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mango Stein on December 14, 2019, 04:40:49 AM
Unfortunately, my tree issue is still going on. Year after year, all fruit split or necrotize when small. The boron amendment did not solve things.

Apparently some Thai mangoes suffer this problem constantly. Well this is a Kwan on dwarfing rootstock.

The only suggestions I get are irrigation issue (too much or too little) but that is not the issue. I am on clay and just wondering if amended planting mound too much and now taproot has hit clay.

Short video clip: https://streamable.com/bv3si
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Frog Valley Farm on December 14, 2019, 04:57:54 AM
I would plant (weather/season permitting) the orchard floor with poly culture or mix of deep rooted annual and perennial grasses like rye and legumes which will eventually build structure, put organic matter in the ground provide habitat for microbial life and make life more conducive for growing your mangos.  You can plant perennial trees directly into this tall grass, they will not compete with each other for water or nutrients.  Spray biodynamic preps and or other teas like compost, humus, etc.  clay is the most amenable soil type for change to soil structure also spraying the whole area not just one plant it’s all one system.   Of course adding earthworm castings to this living habitat should work wonders.  A change in structure can be seen within 10 days after using foliar spray so it not take that long to fix.  Also this is not a lawn let them grow.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mango Stein on December 15, 2019, 06:55:22 AM
I would plant (weather/season permitting) the orchard floor with poly culture or mix of deep rooted annual and perennial grasses like rye and legumes which will eventually build structure, put organic matter in the ground provide habitat for microbial life and make life more conducive for growing your mangos.  You can plant perennial trees directly into this tall grass, they will not compete with each other for water or nutrients.  Spray biodynamic preps and or other teas like compost, humus, etc.  clay is the most amenable soil type for change to soil structure also spraying the whole area not just one plant it’s all one system.   Of course adding earthworm castings to this living habitat should work wonders.  A change in structure can be seen within 10 days after using foliar spray so it not take that long to fix.  Also this is not a lawn let them grow.

Appreciate the advice. I do already have some groundcovers and stable weeds, but anyway won't doing everything you said just improve the upper stratum of earth when beneath it there will always be clay? I feel this mango issue has a very specific pathogenesis but I don't know what it is. Foliage always looks healthy, although trunk is cracked from sunburn when tree was young. Other trees are fine.
Title: Re: Mango Pests, Diseases, and Nutritional Proble
Post by: Frog Valley Farm on December 15, 2019, 09:20:22 AM
Focusing on deep rooted variety’s of grasses like rye and native plants/weeds with deep taproots will help fix your clay soil.  Ground covers are usually a mono crop and while good, without knowing them it’s hard to know what benefits they might be providing.  I am just stating known ways in which soil structure can be improved deep into clay soil.  Without knowing your exact management practices it’s hard to identify what’s actually going on with your clay.  Having growing strips between rows or intercropping with your mangos of native plants that do well in your area would also be beneficial.  Good luck.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Orkine on December 16, 2019, 10:21:24 PM
A friend needs help.  He posted a mango disease or nutrition question at link below.
Can anyone help with his symptoms? Or can an admin move his post here so it will get some attention?

(Title is Mango Help)
http://tropicalfruitforum.com/index.php?topic=35746.msg374286#msg374286 (http://tropicalfruitforum.com/index.php?topic=35746.msg374286#msg374286)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jani on December 17, 2019, 07:32:40 AM
Someone remind please ...for mango just starting to push flowers at this time, is it copper or sulfur to control/prevent fungus?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 17, 2019, 10:27:22 AM
Sulfur.  A couple of Copper-containing substances can be mixed with Sulfur:  Copper Soap (a.k.a. Copper Octanoate), such as Cueva brand;  and, Cuprous Oxide, such as Nordox 75 (if used at less than the minimum-recommended dosage).  [Other Copper products would probably be harmful if mixed with Sulfur.]

Sulfur prevents germination of Powdery Mildew spores;  it does not kill already-active Powdery Mildew.  Sulfur also kills mites, and is a nutrient.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jani on December 17, 2019, 02:52:19 PM
Thanks!

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: achetadomestica on December 17, 2019, 06:16:03 PM

Some of my mangos are showing this curling leaf? Some of my established mangos are not?
I was thinking it was a mite issue after reading some previous posts but I sprayed some good
poison and it didn't help. I thought it might be Mango scab and they need some copper spray
but a friend came by today and thought it was a nutritional issue? I used various fertilizer and
included a slow release synthetic fertilizer from Diamond R with micros last year.  Help?


(https://i.postimg.cc/qgkjH8R6/mango-leaves.png) (https://postimg.cc/qgkjH8R6)




(https://i.postimg.cc/mh2N5BXQ/mango-leaf-close-up.png) (https://postimg.cc/mh2N5BXQ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 17, 2019, 07:44:21 PM
It appears to have a deficiency of Nickel, which is the central atom in the construction of the enzyme, urease, which plants need to properly metabolize urea.  The visible indication is the tiny dead tip on each leaf.  Have you fertilized with urea?  Or used a soil mix containing urea?  Or perhaps that plant is some critters favorite spot to pee?  Some Seaweed extract would supply Nickel, and other trace nutrients.  Some fertilizers also contain traces of Nickel, which is often together with Iron or with Manganese, in minerals.

This still doesn't explain the eye-catching upward curl of the leaf margins.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: achetadomestica on December 17, 2019, 08:47:42 PM
I gave the tree rabbit manure mixed in with some potting mix. When I planted the tree
I had removed a maple tree and after I dug up the large root ball I added some potting mix to the hole.
If I water heavy and refrain from fertilizing it should eventually wash out? I could hit the tree with
some foliar for the micros next Spring? I have been using Southern Ag citrus foliar.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Frog Valley Farm on December 18, 2019, 06:38:02 AM
You are all over the place with your inputs.  First of all enzymes are basically bacteria frass so applying substances that kill bacteria just doesn’t make any sense at all.  Applying manure, synthetic fertilizers and potting soil is so much overkill and has also contributed to your problem of nutrient lockup.  Removing a rootball that probably contained the healthy biology that if left undisturbed would have colonized the rhizosphere of your new tree. The undisturbed biology along with all the carbon from the roots of the tree you removed is all you would have needed for your trees health and its natural ability to communicate with the soil biology and cycle nutrients.  No other input needed.  A good flushing with a lactobacillus spray followed with a tea made from a locally sourced unpolluted humus will help with your issues that you are creating by yourself.  Cutting the old tree down according to the lunar cycle would have contributed to its death.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jani on December 19, 2019, 07:23:39 AM
Follow up question...it looks like its gonna be rainy for the next 4 days straight with little sunshine ...what should I be doing with all these emerging flowers to limit anthracnose, mildew and other fungal issues? Spraying daily?

Sulfur.  A couple of Copper-containing substances can be mixed with Sulfur:  Copper Soap (a.k.a. Copper Octanoate), such as Cueva brand;  and, Cuprous Oxide, such as Nordox 75 (if used at less than the minimum-recommended dosage).  [Other Copper products would probably be harmful if mixed with Sulfur.]

Sulfur prevents germination of Powdery Mildew spores;  it does not kill already-active Powdery Mildew.  Sulfur also kills mites, and is a nutrient.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: strkpr00 on December 22, 2019, 06:30:15 PM
Jani, you stumped the panel.
BTW the trees I acquired from you a few years ago are all flowering. Julie is loaded, looking to load the tree with fruit. I am following your post for answers.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mango Stein on December 23, 2019, 03:13:47 AM

(https://i.postimg.cc/rRqJ5t4d/20191223-185017.jpg) (https://postimg.cc/rRqJ5t4d)
Does it mean anything that panicles are going black but fruit staying green (then later splitting)?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: j1mw3b on December 27, 2019, 04:58:22 PM
Help.  My Pineapple Pleasure obtained in about Sept/Oct this year and still in the 3-gal pot seems to be struggling with shriveling new leaf growth.  They look like someone is sucking all of the moisture out of them.  I plucked a couple and looked with about a 10x magnifier  but don't really see anything, and don't feel anything when I rub with my finger.  I sprayed yesterday over and under with Bonide (sulfur 10%/pyrethrin .25%) fungicide, then Daconil fungicide, and then malathion, and today imidacloprid (sorry to say, but desperate).  It's raining off and on so will repeat again when a good day.  My other 7 mango trees show no signs of this illness.
Hopefully, the pics might give a hint to someone - I'll cry if I lose this tree. 
Think I will also cut off all this diseased new growth. 

Thanks to all and have a very Happy New Year.

(https://i.postimg.cc/NyL41S3x/20191227-163218.jpg) (https://postimg.cc/NyL41S3x)

(https://i.postimg.cc/jW9hvvKY/20191227-163224.jpg) (https://postimg.cc/jW9hvvKY)

(https://i.postimg.cc/SnSVKJV3/20191227-163230.jpg) (https://postimg.cc/SnSVKJV3)

(https://i.postimg.cc/DSx64nMZ/20191227-163238.jpg) (https://postimg.cc/DSx64nMZ)

(https://i.postimg.cc/7fMmDg1S/20191227-163248.jpg) (https://postimg.cc/7fMmDg1S)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tropical-farmer on December 31, 2019, 11:27:50 AM
Going through my mango garden yesterday i found spots in my Cogshall mango( Picture 1) and Coconut Cream mango( Picture 2 and 3) . I think picture 1 is bacterial leaf spot or could it be antracnose? Picture 2 seems to be antracnose? these are in mature leaves and new leaves are not affected. Continuous rains here in SE Florida seems to bring this..thank god my trees havent flowered yet except the Juliette and Guava mango.
Do you guys think its antracnose or is it bacterial leaf spot or something else?
(https://i.postimg.cc/5X0W31VZ/1-C440587-E71-B-4609-938-D-43-B7-DAAEE86-D.jpg) (https://postimg.cc/5X0W31VZ)

(https://i.postimg.cc/CdG0Mm76/4729227-C-C303-43-A6-8-F18-27-DB0-F441778.jpg) (https://postimg.cc/CdG0Mm76)

(https://i.postimg.cc/kBwdKGkQ/F23-E9-D2-E-7-F6-E-4-FF7-ABC9-B3-E7509-BD009.jpg) (https://postimg.cc/kBwdKGkQ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on December 31, 2019, 11:45:20 AM
I'm battling same thing more/less.  Will try tea but copper yesterday seemed to have halted it fingers crossed.  I snap off holy leaves.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tropical-farmer on December 31, 2019, 11:51:17 AM
Yes i removed the affected leaves as well. The bacterial spot i have seen here in the forum are more larger irregular chunks of black spots over the leaves, these on picture 1 look smaller but i can’t tell if its anthracnose vs bacterial spot. Hopefully someone here will chip in, Har?
Trying Chamomile tea vs Copper vs Serenade( BT) spray in different leaves to see which one will work better. If Chamomile works as good as Serenade or Copper that would be a win win for everyone in my garden.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on December 31, 2019, 02:03:49 PM
Definitely keep us posted.  I just bought the tea bags, next is a whole lb of flowers from online.
I'd like to hear opinions on pure tea tree oil, diluted with dawn like neem.

I won't use anything hazardous, copper i drink water from, put in swimming pool, handle pipes & wires, pennies ect so i'm not worried of dying from copper.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 01, 2020, 08:17:23 PM
tropical-farmer:  That may be mango-bacterial-black-spot, but it doesn't look typical.  Photo 3 seems to show a spray pattern, that resulted in damage.  Have you sprayed with an emulsion, or an oil or a soap? During hot weather?  Or in the middle of a sunny day?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 01, 2020, 08:29:35 PM
jtm13bw:  A shorter branch has Zinc deficiency.  The others probably have a severe case of Powdery Mildew, but I am not at all sure.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 01, 2020, 09:01:13 PM
Mango Stein:  Your flower panicle has Powdery Mildew.  On some varieties, such as Nam Doc Mai, fruits hold on anyway, even on an infested pannicle.

Fruit set can be improved by sprays with Calcium, Magnesium, Boron, and Vitamin-C.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tropical-farmer on January 01, 2020, 10:07:48 PM
Thank you Har. Yes i was also thinking it should be a deficiency because there is a pattern to it and the dots are scattered in between the veins but i dont know any deficiency would cause that. I haven’t sprayed them with anything. I will keep a close eye on plant with picture 1 with potential BBS.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: j1mw3b on January 01, 2020, 11:11:42 PM
Thanks Har.  One other expert also called powdery mildew; and my neighbor - ex nursery owner - thought maybe anthracnose.  I been putting different fungicides on it.  Pretty much now resigned to losing the tree.  No uninfected leaves left.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on January 02, 2020, 10:11:26 AM
I'll post some pics of mine later.  I made chamomile haven't tried it yet.  1 tea bag 1 cup water, let it soak as i ate lunch yesterday.  It's strong.  Tried it in leaves i snapped off & see no change.
Careful weak copper & sulfur spray seems ok so far.  Tree's not growing shoots evenly so i'll have to use spray bottle not garden hose attachment when flowers open.
I lost all fruit last season.  Hurt.  That's why i'm giving it all i can this season.  Flowers last season were beautiful till powdery mildew & anthracnose killed them.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 02, 2020, 01:11:34 PM
The word "anthracnose" comes from the Greek word for "black."  Anthracnose infections are, as far as I know, always black or greyish-black.  So I wouldn't look at your white-dead leaves and say that anthracnose got them.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on January 02, 2020, 02:02:19 PM
These are better then others i snapped off days ago.  I'm considering blasting tree with straight gardenhose water tomorrow morning (no flowers yet) to remove everything i applied the past couple weeks & start fresh, rinsing leaves, and go mild copper/neem/dawn mix.  I read sulfur alone without fungicide can increase anthracnose..true?
Ed

(https://i.postimg.cc/KKRrrfc7/IMG-5842.jpg) (https://postimg.cc/KKRrrfc7)

(https://i.postimg.cc/7Gz3jL2f/IMG-5843.jpg) (https://postimg.cc/7Gz3jL2f)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on January 02, 2020, 02:38:25 PM
Happy ones

(https://i.postimg.cc/bZMzC0fH/IMG-5847.jpg) (https://postimg.cc/bZMzC0fH)

Unhappy one

(https://i.postimg.cc/VrPz1Y6J/IMG-5848.png) (https://postimg.cc/VrPz1Y6J)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on January 02, 2020, 05:04:59 PM
This was Feb 2019.  Not 1 mango survived.  None!  Was devistated.  Lesson learned, sprayed copper too late, no fertilizer.  Letting you new mango lovers know to be on your toes, don't expect fruit set without some tlc.

(https://i.postimg.cc/xqP3ZzKB/IMG-8338.jpg) (https://postimg.cc/xqP3ZzKB)

(https://i.postimg.cc/q6pXRJdm/IMG-8346.jpg) (https://postimg.cc/q6pXRJdm)

(https://i.postimg.cc/YG6zM4TG/IMG-8347.jpg) (https://postimg.cc/YG6zM4TG)

(https://i.postimg.cc/dDF9nBT8/IMG-8349.jpg) (https://postimg.cc/dDF9nBT8)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on January 02, 2020, 09:37:29 PM
Or- blast off everything & soak entire tree with tea water?
I'm lucky to have 1 shot left.  Others in my area are blooming.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 03, 2020, 02:56:26 PM
EddiedF, that does look like Anthracnose on yesterday's picture of the "unhappy one."
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on January 03, 2020, 04:22:38 PM
Guana, thank you.  I've yet to decide final move before flowers begin. Too hot to apply today.
I'm leaning towards blasting entire tree with garden hose to remove my treatments, and then use garden hose attachment which delivers up to 10 tablespoon/gallon (i dillute mix so 10 is really 1/4 that or whatever i decide) and soak tree with?  Chamomile won't be strong enough undilluted, leaning towards cocktail of copper, sulfur, foliar nutrients & dawn, all mixed weaker then label & soak entire tree.  Good?

Could it be i mix copper too weak?  I try not to have blue spotted leaves as i see in other posts.
Tree still stinks good? from previous sulfur & neem.  Worried neem might clog pores of leaves.  They shiny though, nice dark green almost too dark from copper and i see less damage spots.

Does sulfur help stop anthracnose?  I read it increases it without fungicide.
Thanks again.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Orkine on January 03, 2020, 05:59:51 PM
I don't know what others think, but I understand you wait at least 2 weeks after a treatment to reapply and that you should alternate between fungicides (copper then sulfur, repeat).
I know you are all over this tree with serious TLC, but be careful not to hurt it with too much stuff.  They are a resilient bunch and there are other things that could cause a bloom to fail.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 03, 2020, 10:47:24 PM
Any new spray mix you come up with should be tested, before you spray whole trees.

Measure what would do just one quart of spray and use that on branches that you have marked.  Take notes, including time of day, temperature, wind, and other weather.  Look at sprayed and non-sprayed branches the next day, three-five days later, and 10 days later.  If you don't see damage on flowers on the second check, then you are probably good to go with spraying the whole tree.  It takes longer to have any chance of determining benefit, but first you want to be sure that you are not causing harm. 

I have killed flowers, with several mixes that I tried.  I was glad that it was just a few panicles.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mango Stein on January 04, 2020, 01:44:42 AM
Mango Stein:  Your flower panicle has Powdery Mildew.  On some varieties, such as Nam Doc Mai, fruits hold on anyway, even on an infested pannicle.

Fruit set can be improved by sprays with Calcium, Magnesium, Boron, and Vitamin-C.

Ah ok. I could have never thought powdery mildew, since leaves are totally immune. Also there is no problem with large fruit set, just later splitting when golf-ball sized.

According to an Indian professor, the remedy is to spray with wettable sulfur, then 15 days later spray with Dinocap, then 20 days later spray with Tridemorph. Seems rather laborious.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 04, 2020, 09:56:03 AM
Sulfur sprays prevent Powdery Mildew germination.  This is strictly PREVENTATIVE.

Preventative spraying goes against the grain of persons whose motto is "Don't fix what aint broke!".  They refuse to spray until they see a problem.
Then when they spray with Sulfur, "It doesn't work."  It does nothing against already visible infections.   [But it does protect nearby areas that are not already penetrated.]  These same persons tend to love insecticides, because when insects are seen, they can be zapped.  Most fungicides don't work that way.  Exceptions are described as "curative."

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on January 04, 2020, 12:28:29 PM
Guana, reading writing as i wait for clouds & rain following as my next spray mix sits mixed.
I just read your great input about sulfur being a preventative, not a zap ya after the fact.
Mixed 2oz sulfur, 2 oz copper, 1/2oz plain Dawn & water to equal 12oz for hose sprayer set at 10tbl/gallon.
I like dilluting & using higher setting so it passes mix easier.
I know what i spray will get washed off somewhat later, but this morn i see more unhappy panicles.
Next week i have crew coming to remove 2 large pepper trees, mulch property line of my other lot, mulch center of lot some for citrus & yummy mangos.  Wonder if Anthracnose hangs out on the pep trees & wooded lot.  Lot's south of my mango tree, wind normally comes from east.  Today south west.

Btw i use hose sprayer cause i'm C7 paraplegic.  I get up close to tree with fan pattern & then back up & solid stream the rest.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 04, 2020, 09:10:37 PM
I haven't worked enough with a hose-end sprayer to figure out those rates.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on January 04, 2020, 09:35:43 PM
i sprayed it approx 3pm, light raindrops fell as i was closing patio door.  hose attachment is Garbage because it leaks out vent and should be inline not in hands.  i need to build my own for inline hose.  Probably not impossible, at all.

i'm having some of lot next to me cleared next week.  Pepper trees, stumps getting ground, lowflow machine will mulch path and open area to plant where ever i choose hopefully.

Pepper tree berries good for anything?  I'll have a bunch to grab before chipper if so. 

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Orkine on February 16, 2020, 07:19:15 AM
There are two mango trees along a route I take a walk on from time to time.
The other day, I noticed the one tree looked very stressed while the other did not.
(https://i.postimg.cc/PpXVR9TX/Pic.jpg) (https://postimg.cc/PpXVR9TX)  (https://i.postimg.cc/5YsKdg2w/Pic4.jpg) (https://postimg.cc/5YsKdg2w)  (https://i.postimg.cc/n9MRHmXN/pic5.jpg) (https://postimg.cc/n9MRHmXN)

(https://i.postimg.cc/GB7vb5vh/Pic2.jpg) (https://postimg.cc/GB7vb5vh)  (https://i.postimg.cc/nscvbJjP/Pic3.jpg) (https://postimg.cc/nscvbJjP)

Both trees are within 30 feet of each other and are not cared for.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 16, 2020, 12:22:11 PM
I usually do a "shotgun-corrective-treatment" for such severe deficiencies.  In a couple of watering cans with some water, I add a powdered mix of micronutrients and Magnesium, plus additional amounts of the individual nutrients that are visibly deficient--- in this case, Manganese.  Then the liquid is spread under the canopy and several feet beyond.

At the same time, I spread the usual amount of granular fertilizer.  If the soil is sandy, I include Gypsum.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on February 23, 2020, 09:54:17 AM
Lost 1/3 of a cocktail tree, don't have a clue why. Snapped clean off. Note a little brown in the heart of the branch. Am thinking the cause might be from a radical moisture change - going months with very little water and then a deep flooding of the bed. A week earlier I had sprayed it with a mix of Magnabon CS2005 and Pristine for anthracnose control.


(https://i.postimg.cc/bsHXKdzq/Mango-Rot-3.jpg) (https://postimg.cc/bsHXKdzq)

(https://i.postimg.cc/NyRPrz5B/MangoRot.jpg) (https://postimg.cc/NyRPrz5B)

(https://i.postimg.cc/YG3ndL6P/Mango-Rot-2.jpg) (https://postimg.cc/YG3ndL6P)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 23, 2020, 11:33:57 AM
Stumps me too.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pineislander on February 23, 2020, 09:03:13 PM
Lost 1/3 of a cocktail tree, don't have a clue why. Snapped clean off.
I've wondered if greenhouse growers had methods for toughening up/hardening trees which seldom get windblown.
Do you shake bend or stress the trees with movement? Maybe just a strong fan would do that.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on February 24, 2020, 07:30:20 AM
Lost 1/3 of a cocktail tree, don't have a clue why. Snapped clean off.
I've wondered if greenhouse growers had methods for toughening up/hardening trees which seldom get windblown.
Do you shake bend or stress the trees with movement? Maybe just a strong fan would do that.

Don't think that was it.  If the other two large branches fall off then I know I have a heart rot problem.  I could use more light then again we have very few rain days and lots of sunny skies. 

I get 40+ mph winds a lot.  Finally had to install a windbreak on the prevailing side.
(https://i.postimg.cc/gw88P0GK/Greenhouse-South.jpg) (https://postimg.cc/gw88P0GK)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 24, 2020, 08:28:10 AM
This is much less likely to happen when multiple branching is not all from the same growth node.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on February 24, 2020, 08:43:00 AM
This is much less likely to happen when multiple branching is not all from the same growth node.

OK, why is that?

I tipped my mango trees just before they went into dormancy last winter.   Worked great, each cut inducing multiple branching which produced flowering on the new branches...as it should be.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: shot on February 24, 2020, 09:39:34 AM
What Har said is on the money, weak crochet on tree limbs.Some types just produce a lot of those type crochets.Even Wood weakness varies between mango varieties a lot.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on February 24, 2020, 09:56:39 AM
What Har said is on the money, weak crochet on tree limbs.Some types just produce a lot of those type crochets.Even Wood weakness varies between mango varieties a lot.

Got it.  Not gonna worry about it, it will fill in.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 24, 2020, 07:40:50 PM
When one tops a tree an inch or two beneath a flush ring, the new branches' height from the ground will be slightly staggered, preferably by an inch or more.  These will have stronger bases.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on March 16, 2020, 10:30:59 AM
What Har said is on the money, weak crochet on tree limbs.Some types just produce a lot of those type crochets.Even Wood weakness varies between mango varieties a lot.

Damn it, lost another branch at the same crotch.  Both branches of the 3 were loaded too. I tied the remaining branch up so it can't break off.  It's loaded.

Am also going to back off the high N foods since my trees are growing so vigorously.
 
(https://i.postimg.cc/9rGp08Nk/Orange-Sherbet-Branch.jpg) (https://postimg.cc/9rGp08Nk)

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on March 16, 2020, 10:36:02 AM
When one tops a tree an inch or two beneath a flush ring, the new branches' height from the ground will be slightly staggered, preferably by an inch or more.  These will have stronger bases.

Same principle and location apply if the tree is 6' or better Har?  Here it is last month about 7'. I grafted it in 2018 from a stub.  Is also holding Pineapple Pleasure and Juicy Peach.


(https://i.postimg.cc/BXXp3Tr8/Greenhouse-Feb16-4-Mango-Tree.jpg) (https://postimg.cc/BXXp3Tr8)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on March 16, 2020, 10:45:45 AM
Even Wood weakness varies between mango varieties a lot.

Was just wondering about that.  I radically topped a Lemon Zest which produce 6 "scaffold" branches just above the graft and never had this problem. 

Hmmm, after taking a closer looks it does look like staggered or alternating branches flushed.  I believe I cut about an inch below the first node, about 6-8" above the graft.

May 2016

(https://i.postimg.cc/wRVjbRVg/Lemon-Zest-May26.jpg) (https://postimg.cc/wRVjbRVg)

August 2017

(https://i.postimg.cc/qgMc4sPs/Lemon-Zest-Aug8.jpg) (https://postimg.cc/qgMc4sPs)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on March 16, 2020, 10:53:37 AM
Odd, that looks like strong attachment in the 1st picture. Wonder if some sort of animal broke it.

Even Wood weakness varies between mango varieties a lot.

Was just wondering about that.  I radically topped a Lemon Zest which produce 6 "scaffold" branches just above the graft and never had this problem. 

Hmmm, after taking a closer looks it does look like staggered or alternating branches flushed.  I believe I cut about an inch below the first node, about 6-8" above the graft.

May 2016

(https://i.postimg.cc/wRVjbRVg/Lemon-Zest-May26.jpg) (https://postimg.cc/wRVjbRVg)

August 2017

(https://i.postimg.cc/qgMc4sPs/Lemon-Zest-Aug8.jpg) (https://postimg.cc/qgMc4sPs)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on March 16, 2020, 11:04:47 AM
Odd, that looks like strong attachment in the 1st picture. Wonder if some sort of animal broke it.


Never considered that!  We have a lot of coons but I doubt if they can jump or crawl up to the wall vent which I keep open for pollinators.  Kicker is there's nothing for an animal in that tree but flowers.

I have untouched Reed fruits and lots of sugary sweet oranges still hanging they might be interested in.

(https://i.postimg.cc/62fCX0Lv/Greenhouse-South-Vent.jpg) (https://postimg.cc/62fCX0Lv)

(https://i.postimg.cc/GHWtXDvw/Reed-March2.jpg) (https://postimg.cc/GHWtXDvw)

Huge Marrs orange next to a Moro blood.

(https://i.postimg.cc/23nKqRTQ/Oranges-March10.jpg) (https://postimg.cc/23nKqRTQ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on March 16, 2020, 11:08:18 AM
Very strange then. I've had weaker looking branch crotches that have not failed, even with a load of mangoes.

Odd, that looks like strong attachment in the 1st picture. Wonder if some sort of animal broke it.


Never considered that!  We have a lot of coons but I doubt if they can jump or crawl up to the wall vent which I keep open for pollinators.  Kicker is there's nothing for an animal in that tree but flowers.

I have untouched Reed fruits and lots of sugary sweet oranges still hanging they might be interested in.

(https://i.postimg.cc/62fCX0Lv/Greenhouse-South-Vent.jpg) (https://postimg.cc/62fCX0Lv)

(https://i.postimg.cc/GHWtXDvw/Reed-March2.jpg) (https://postimg.cc/GHWtXDvw)

Huge Marrs orange next to a Moro blood.

(https://i.postimg.cc/23nKqRTQ/Oranges-March10.jpg) (https://postimg.cc/23nKqRTQ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on March 16, 2020, 11:21:02 AM
Very strange then. I've had weaker looking branch crotches that have not failed, even with a load of mangoes.

Uh oh, suggests I may have some kind of internal rot going on.  I flooded the spots with a concentrated mix of Pristine and Phyton 35 (copper), diluted it and then drenched the tree yesterday.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gychang on March 26, 2020, 08:47:45 PM
Anyone know what's going on with these mangos?  I cant really tell if it's fertilizer burn or lack of it.  Thanks in advance!
(https://i.postimg.cc/cKP1Bz85/Screen-Shot-2020-03-26-at-2-45-2738-PM.png) (https://postimg.cc/cKP1Bz85)

(https://i.postimg.cc/xkNn8PFG/Screen-Shot-2020-03-26-at-2-46-0643-PM.png) (https://postimg.cc/xkNn8PFG)

(https://i.postimg.cc/wyhzcjz7/Screen-Shot-2020-03-26-at-2-46-2626-PM.png) (https://postimg.cc/wyhzcjz7)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 26, 2020, 10:10:16 PM
gychang,
Photo 1 looks fungal.
Photos 2 and 3 look partly fungal also;  however, several leaves also have blackened burn along the edges, which looks like excess Boron.

Is there compost in the potting mix?  Compost is often problematic for mangos.  So is constantly wet soil.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gychang on March 26, 2020, 11:56:16 PM
Thanks Har!
   Yes there's some compost in there.  It's also been kinda wet here for a few the past couple months.  Any recommendations for what to do?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Frog Valley Farm on March 27, 2020, 08:48:28 AM

Is there compost in the potting mix?  Compost is often problematic for mangos.  So is constantly wet soil.
Compost is not problematic and is great for Mangos.  Don’t use it if you are not growing organically or don’t know what finished compost is. If you think compost and a little slow release fertilizer is still organic, don’t use it. 

My kickass Demeter Certified, Fungal Aged Compost is jello like.  Never goes dry.  A jello for the soil. 🐸
(https://i.postimg.cc/yW7QwKHw/59-B08934-01-CC-4-A55-8-F61-19-A7-B6-F518-F6.jpg) (https://postimg.cc/yW7QwKHw)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 27, 2020, 10:55:28 AM
Some compost applied as a topdress or instant topsoil, on top of the soil where a mango is planted--- if applied in moderation, such as one inch deep--- is usually great.

But when mangos are planted in a pot of compost, or in a pot of organic matter that turns to compost, it will consistently become a sick or dead mango.  The same happens when a planting hole is stuffed with compost or with potting soil that later turns to compost.  Those techniques are usually fine for veggies and bananas, but almost always terrible for mangos.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Frog Valley Farm on March 27, 2020, 11:25:02 AM
Some compost applied as a topdress or instant topsoil, on top of the soil where a mango is planted--- if applied in moderation, such as one inch deep--- is usually great.

But when mangos are planted in a pot of compost, or in a pot of organic matter that turns to compost, it will consistently become a sick or dead mango.  The same happens when a planting hole is stuffed with compost or with potting soil that later turns to compost.  Those techniques are usually fine for veggies and bananas, but almost always terrible for mangos.
Compost should not “turn”.  It is finished it holds the perfect amount of water at all times it repels the rest.  It is humus it is a perfect growing medium. Sounds like your referring to what is known as organic matter, organic matter should only be added in small amounts, on the cover between the trees. I have applied up to 10”  Compost in the areas between trees 100s of lbs.  The amount of fruit produced on this system produces almost too much fruit, it works just grow a cover on it vegetables grass weeds all is best.  This real organic system using a real compost provides the exact amount of nutrients the tree needs to grow and produce at 100% of its potential.  You cannot over feed in this system, it’s impossible.  It is important that you know what compost is or it may fail and will not work correctly.


Compost replaces all fertilizers and chemicals use it on your Mangos for your trees health and for an abundance of healthy fruit.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: shot on March 27, 2020, 11:40:56 AM
If you get your soil to rich, not so good for mangos.They grow to much and not much stress and no fruit.Some crops are heavy feeders avocados,jaks,mamey ect.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on March 27, 2020, 02:38:12 PM
Yep. I found this out via experience... 10 years and over a thousand cubic yards of mulching. One of the biggest issues is internal breakdown due to the nutrient imbalance (bad Ca to K ratio). Another issue (aside from the super high P) is micronutrient lockup.

I think I found a bit of a sweet spot, with a thin layer of mulch that encourages worms and other beneficials and which works as a nutrient reserve, but doesn't present the other issues to a significant degree.

If you get your soil to rich, not so good for mangos.They grow to much and not much stress and no fruit.Some crops are heavy feeders avocados,jaks,mamey ect.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: shot on March 27, 2020, 04:38:52 PM
100% cookie, I'm going to have to cut some 4 to 8 inch wood this year.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on March 29, 2020, 10:05:13 AM
Compost is not problematic and is great for Mangos.  Don’t use it if you are not growing organically or don’t know what finished compost is. If you think compost and a little slow release fertilizer is still organic, don’t use it. 

My kickass Demeter Certified, Fungal Aged Compost is jello like.  Never goes dry.  A jello for the soil. 🐸
(https://i.postimg.cc/yW7QwKHw/59-B08934-01-CC-4-A55-8-F61-19-A7-B6-F518-F6.jpg) (https://postimg.cc/yW7QwKHw)

I practice the best of both worlds- I apply organics AND use synthetic fertilizers for better performance.

Tell me, what is the exact nutritional value of your compost, your organics?  Talking NPK and micros.  That's all a plant cares about.  Cares less about folks' lifestyles and cults they choose.

Sorry for coming off as a jerk but I really get tired of this feel good "natural" B.S..  Compost CAN be problematic. Many organic materials are laden with broadleaf herbicides and/or heavy metals.  I know of no organic purist that knows exactly what's in their rocket fuels.

One must use common sense and be a good steward of their health and the environment.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on March 29, 2020, 10:10:36 AM
Some compost applied as a topdress or instant topsoil, on top of the soil where a mango is planted--- if applied in moderation, such as one inch deep--- is usually great.

But when mangos are planted in a pot of compost, or in a pot of organic matter that turns to compost, it will consistently become a sick or dead mango.  The same happens when a planting hole is stuffed with compost or with potting soil that later turns to compost.  Those techniques are usually fine for veggies and bananas, but almost always terrible for mangos.

That is true. It's all about soil structure.  Compost will break down causing a gas exchange issue.  My soil mix is about 50% inorganics - sand, perlite and/or vermiculite. 

Folks should NEVER amend their backfill.

(https://i.postimg.cc/sQygGtL1/Soil.jpg) (https://postimg.cc/sQygGtL1)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on March 29, 2020, 10:57:21 AM
Same here, but it took me a decade of growing to figure that out. No moral reason to stay within the confines of an organic regimen (unless one is certified as doing so).

When I had my soil tested (black compost from a decade of extremely heavy mulching), P was off the chart (literally), K to Ca ratio was terrible, and micronutrients were way under represented. But it took about a decade for those conditions to develop.

As Har mentioned, moderation is good here. A thin layer of compost does a lot of good.

I practice the best of both worlds- I apply organics AND use synthetic fertilizers for better performance.

Tell me, what is the exact nutritional value of your compost, your organics?  Talking NPK and micros.  That's all a plant cares about.  Cares less about folks' lifestyles and cults they choose.

Sorry for coming off as a jerk but I really get tired of this feel good "natural" B.S..  Compost CAN be problematic. Many organic materials are laden with broadleaf herbicides and/or heavy metals.  I know of no organic purist that knows exactly what's in their rocket fuels.

One must use common sense and be a good steward of their health and the environment.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: TonyinCC on March 29, 2020, 11:02:47 AM
Re :Compost

My soil in Cape Coral is so poor that I HAVE to fill the planting hole with topsoil/compost. The topsoil in my neighborhood is really subsoil from canal excavation used to elevate the residential lots. It is sand with shells/coral rock of various sizes and almost no organic matter or life. I have no irrigation system and the well water is very salty.
When the top layer of ground dries it actually repels water. Almost everything goes chlorotic so I use a lot of liquid iron and similar granular products. I would use soluble kelp powder if it wasn't near $500 a pail.
 Once the soil is dry even a heavy rainfall will only wet the top inch or so and then it is dry as dust beneath.My first mangos were planted by the book. All struggled and most died. Filling the planting hole with compost has greatly increased survival.Sometimes I give the trees a little molasses,it seems to help.
 I have to fill the planting hole with compost and at least a 2 inch layer of compost surrounding the tree so I can successfully water from a can or hose from my Reverse osmosis system. If there is some moisture the soil drains fine. When dry, water just beads up and runs off.
  Once mangos are established I try to give them a little water around bloom to minimize fruit drop. Last year I was unable to water. The trees set a good crop but the rains came so late much of it dropped. Mature mangos do fine in the neighborhood but young trees struggle. The past two Winters it has hardy rained at all.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on March 29, 2020, 12:09:06 PM
I hear ya, I'm in the same boat here. We have a solid foot thick layer of calcium carbonate rock / rubble (from canal digging) with a 3 - 4 inch layer of sand on top.

Honestly, a lot of soils repel water when dry. Peat is especially bad, but even compost does it. The key is to keep it watered during establishment or wait until the summer rains kick in. Best time to plant a mango tree here is August, since you get the summer rains, and mangoes naturally lay down roots during the fall (the yearly cycle is roughly: dormant => fruit => grow limbs => grow roots).

To repair chlorosis, sulfur helps a lot in that it temporarily drops pH. As an experiment, I dropped the pH of 1/4 acre of land from mid to high 7's to the 3's with a literal ton of sulfur. Took a good 5 years for the pH to return to the 7's. (PS -- you can buy OMRI listed sulfur pellets if that's something you're interested in.)

Also, consistently apply micronutrients (Tiger produces some good ORMI listed micros, and conventionals are easy to obtain).  Consistent foliar application helps too.

Re :Compost

My soil in Cape Coral is so poor that I HAVE to fill the planting hole with topsoil/compost. The topsoil in my neighborhood is really subsoil from canal excavation used to elevate the residential lots. It is sand with shells/coral rock of various sizes and almost no organic matter or life. I have no irrigation system and the well water is very salty.
When the top layer of ground dries it actually repels water. Almost everything goes chlorotic so I use a lot of liquid iron and similar granular products. I would use soluble kelp powder if it wasn't near $500 a pail.
 Once the soil is dry even a heavy rainfall will only wet the top inch or so and then it is dry as dust beneath.My first mangos were planted by the book. All struggled and most died. Filling the planting hole with compost has greatly increased survival.Sometimes I give the trees a little molasses,it seems to help.
 I have to fill the planting hole with compost and at least a 2 inch layer of compost surrounding the tree so I can successfully water from a can or hose from my Reverse osmosis system. If there is some moisture the soil drains fine. When dry, water just beads up and runs off.
  Once mangos are established I try to give them a little water around bloom to minimize fruit drop. Last year I was unable to water. The trees set a good crop but the rains came so late much of it dropped. Mature mangos do fine in the neighborhood but young trees struggle. The past two Winters it has hardy rained at all.
Title: Canal soil issues
Post by: TonyinCC on March 29, 2020, 12:57:49 PM
Most grass won't even grow on this stuff without constant irrigation and fertilizer. Some palms even die. The vacant lots are about 50% bare ground with drought tolerant weeds/wildflowers covering the rest. Almost like a desert with no cactus during the dry season. I have dug up and transplanted a lot of blanketflower and beach sunflower. 
I even tried about 30 yards of mulch and raised about 10 lbs of earthworms to release, they multiplied well and ate a foot of mulch down to about 2 inches in 2 years then disappeared after the drought 2 winters ago.
  I have 2-3 feet of the shells-sand-coral mix before I hit regular sand/silt.
 I have tried sulfur in small amounts and it helps, but 50 lb bags seem unavailable locally.
Foliar soluble kelp is awesome but so expensive, I might buy a pail anyway.
 Wish I could find a source of Potassium Sulfate and Calcium Sulfate in SW Florida. Calcium Nitrate would be wonderful too.... The local Southern Ag dealer won't order bags for me.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 29, 2020, 01:19:35 PM
If your soil is truly high in Calcium Carbonate, you can transform some of that into Calcium Sulfate by adding Sulfur.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: TonyinCC on March 29, 2020, 01:39:34 PM
I have applied sulfur but need 50 lb bags to do more than spot application and I can't find a source in Ft Myers area.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on March 29, 2020, 04:17:42 PM
Wise and practical man.  I had the same experience regarding ultra high P, K and Ca.  As advised by the lab techs more compost only exacerbates the problem so "don't add it for 5 years".  Cure - using a very high N food relative to the rest of the macros.


Same here, but it took me a decade of growing to figure that out. No moral reason to stay within the confines of an organic regimen (unless one is certified as doing so).

When I had my soil tested (black compost from a decade of extremely heavy mulching), P was off the chart (literally), K to Ca ratio was terrible, and micronutrients were way under represented. But it took about a decade for those conditions to develop.

As Har mentioned, moderation is good here. A thin layer of compost does a lot of good.

I practice the best of both worlds- I apply organics AND use synthetic fertilizers for better performance.

Tell me, what is the exact nutritional value of your compost, your organics?  Talking NPK and micros.  That's all a plant cares about.  Cares less about folks' lifestyles and cults they choose.

Sorry for coming off as a jerk but I really get tired of this feel good "natural" B.S..  Compost CAN be problematic. Many organic materials are laden with broadleaf herbicides and/or heavy metals.  I know of no organic purist that knows exactly what's in their rocket fuels.

One must use common sense and be a good steward of their health and the environment.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on March 29, 2020, 04:19:55 PM
All you need is a bottomless RootBuilder "pot" - period.

Quote
author=TonyinCC link=topic=1001.msg382249#msg382249 date=1585494167]
Re :Compost

My soil in Cape Coral is so poor that I HAVE to fill the planting hole with topsoil/compost. The topsoil in my neighborhood is really subsoil from canal excavation used to elevate the residential lots. It is sand with shells/coral rock of various sizes and almost no organic matter or life. I have no irrigation system and the well water is very salty.
When the top layer of ground dries it actually repels water. Almost everything goes chlorotic so I use a lot of liquid iron and similar granular products. I would use soluble kelp powder if it wasn't near $500 a pail.
 Once the soil is dry even a heavy rainfall will only wet the top inch or so and then it is dry as dust beneath.My first mangos were planted by the book. All struggled and most died. Filling the planting hole with compost has greatly increased survival.Sometimes I give the trees a little molasses,it seems to help.
 I have to fill the planting hole with compost and at least a 2 inch layer of compost surrounding the tree so I can successfully water from a can or hose from my Reverse osmosis system. If there is some moisture the soil drains fine. When dry, water just beads up and runs off.
  Once mangos are established I try to give them a little water around bloom to minimize fruit drop. Last year I was unable to water. The trees set a good crop but the rains came so late much of it dropped. Mature mangos do fine in the neighborhood but young trees struggle. The past two Winters it has hardy rained at all.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on March 29, 2020, 04:25:21 PM
If your soil is truly high in Calcium Carbonate, you can transform some of that into Calcium Sulfate by adding Sulfur.

No shit. I don't know how many times I've had to correct the "advice" from Saturday morning talk show "experts" that recommend folks add gypsum to open up tight clay soils.  Here we are in calcareous clay soils with bicarbs and a high pH that's thru the roof.

 Sulfur can be added in powder or pastule form using a  broadcaster.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on March 29, 2020, 08:43:20 PM
Haha that's exactly what I've started doing -- halted on the compost (except for what I run through the chipper) and high N (except for the mangoes). Huge difference.

Wise and practical man.  I had the same experience regarding ultra high P, K and Ca.  As advised by the lab techs more compost only exacerbates the problem so "don't add it for 5 years".  Cure - using a very high N food relative to the rest of the macros.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: achetadomestica on March 29, 2020, 09:26:16 PM
I have applied sulfur but need 50 lb bags to do more than spot application and I can't find a source in Ft Myers area.
Diamond R sells tiger 90 in LaBelle in 50#bags. Very cheap if I remember
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on March 30, 2020, 04:21:38 PM
Any recommendations to save this potted PPK? Leaves are turning black from the edges to inside, I have applied abound ~1 tablespoon/gal rate and also applied copper fungicide. I have seen posts with similar issues, but can’t find it anymore.

Thanks.
(https://i.postimg.cc/D89tPqhx/9293-C9-F9-293-E-4-F35-8-BDB-72-D368-C8-EE98.jpg) (https://postimg.cc/D89tPqhx)

(https://i.postimg.cc/MvQLHvBV/AC3-DA50-A-DD35-4-DB0-A783-E8562-BCB7-CBC.jpg) (https://postimg.cc/MvQLHvBV)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: TonyinCC on March 30, 2020, 09:07:20 PM
Thanks , Labelle is a good drive but worth it to get some Sulfur cheap.
 Does anyone else use Diesel exhaust fluid for nitrogen? It is high purity Urea, It is the cheapest high nitrogen stuff I can find.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 30, 2020, 10:01:57 PM
Urea and ammonium are easily problematic for mangos.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 30, 2020, 10:08:54 PM
The darkening leaf edges may be from excess Boron, or maybe from too steadily-wet roots in highly organic soil.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on March 31, 2020, 07:21:08 AM
Any recommendations to save this potted PPK? Leaves are turning black from the edges to inside, I have applied abound ~1 tablespoon/gal rate and also applied copper fungicide. I have seen posts with similar issues, but can’t find it anymore.

Thanks.
(https://i.postimg.cc/D89tPqhx/9293-C9-F9-293-E-4-F35-8-BDB-72-D368-C8-EE98.jpg) (https://postimg.cc/D89tPqhx)

(https://i.postimg.cc/MvQLHvBV/AC3-DA50-A-DD35-4-DB0-A783-E8562-BCB7-CBC.jpg) (https://postimg.cc/MvQLHvBV)

Looks like anthracnose to me.  Haven't you guys had a lot of rain lately?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on March 31, 2020, 08:49:49 AM
Can anyone ID this problem..
Looks to me like it could be MBBS..
But this is a Carrie mango and it's not supposed to get that.. is it possible that the disease has mutated.  This is the second one that showed up.

(https://i.postimg.cc/RqMzYx3K/20200331-082716.jpg) (https://postimg.cc/RqMzYx3K)

(https://i.postimg.cc/z3Lk8VRr/20200331-082731.jpg) (https://postimg.cc/z3Lk8VRr)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Squam256 on March 31, 2020, 09:00:55 AM
Can anyone ID this problem..
Looks to me like it could be MBBS..
But this is a Carrie mango and it's not supposed to get that.. is it possible that the disease has mutated.  This is the second one that showed up.

(https://i.postimg.cc/RqMzYx3K/20200331-082716.jpg) (https://postimg.cc/RqMzYx3K)

(https://i.postimg.cc/z3Lk8VRr/20200331-082731.jpg) (https://postimg.cc/z3Lk8VRr)

Appears to be a split caused by a MBBS lesion.

Any mango can get MBBS including resistant varieties like Carrie. The difference is in the severity and percentage of fruit impacted. With Carrie that number will likely be single digits percentage wise, while something like Kent or Keitt can be well north of 50%.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on March 31, 2020, 09:50:00 AM
Yep. Left untreated, my infected keitt was losing nearly 100% of her crop.

Can anyone ID this problem..
Looks to me like it could be MBBS..
But this is a Carrie mango and it's not supposed to get that.. is it possible that the disease has mutated.  This is the second one that showed up.

(https://i.postimg.cc/RqMzYx3K/20200331-082716.jpg) (https://postimg.cc/RqMzYx3K)

(https://i.postimg.cc/z3Lk8VRr/20200331-082731.jpg) (https://postimg.cc/z3Lk8VRr)

Appears to be a split caused by a MBBS lesion.

Any mango can get MBBS including resistant varieties like Carrie. The difference is in the severity and percentage of fruit impacted. With Carrie that number will likely be single digits percentage wise, while something like Kent or Keitt can be well north of 50%.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on March 31, 2020, 10:18:31 AM
The darkening leaf edges may be from excess Boron, or maybe from too steadily-wet roots in highly organic soil.

Roots might be too wet due to rain and I only used potting mix from Lowe’s to plant. I will repot it in sand and topsoil mix and hope for the best, thanks.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on March 31, 2020, 10:20:21 AM
Any recommendations to save this potted PPK? Leaves are turning black from the edges to inside, I have applied abound ~1 tablespoon/gal rate and also applied copper fungicide. I have seen posts with similar issues, but can’t find it anymore.

Thanks.


Looks like anthracnose to me.  Haven't you guys had a lot of rain lately?

We had lot of rain lately, I also found some scales on the leaves following ant trails.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on March 31, 2020, 10:52:19 AM
Ok thanks Jeff and Alex
I suspected it but I didn't realize any mango can get the disease I figured Carrie was immune to it because a couple of years ago I had to two Keitt trees that I have since top worked but lost 100% of their crop, that were right next to this particular Carrie and it was not affected at that time.
  I topworked Pickering ,honey kiss and dwarf Hawaiian in their place
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: murahilin on March 31, 2020, 05:17:17 PM
Yep. Left untreated, my infected keitt was losing nearly 100% of her crop.

Jeff, if you would only be one with nature, all of your Keitts would be problem-free. Diseases can be stopped with positive energy and compost.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on March 31, 2020, 06:35:57 PM
:D

Yep. Left untreated, my infected keitt was losing nearly 100% of her crop.

Jeff, if you would only be one with nature, all of your Keitts would be problem-free. Diseases can be stopped with positive energy and compost.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropheus76 on April 20, 2020, 09:40:50 AM
Question are big veins on the outer skin of a mango normal for Sweet tarts. No pics but basically big veins like on a body builders arms, no discoloration or anything else. I am used to seeing smooth skinned mangos and this is my first real large number of mangos I have gotten.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 20, 2020, 10:14:31 AM
We do need a picture.  I am not picturing that in my mind.  Don't think I have seen such.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tropheus76 on April 20, 2020, 05:09:37 PM
(https://i.postimg.cc/K17y4pk9/20200420-170218.jpg) (https://postimg.cc/K17y4pk9)
Only a couple have this.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 20, 2020, 06:18:51 PM
You're right, that that is weird!  No idea!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: weiss613 on April 26, 2020, 02:02:53 PM
The lines on this mango come from it’s condo heritage. One of its parents is an old lady in Hallandale Florida who is known for having the worst varicose veins in the neighborhood!!!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dross99_si on April 26, 2020, 04:30:59 PM
We have some black splotchy coloration on young branches of our Carrie mango. It does not come off when I try scrubbing or scraping it so I do not suspect it to be sooty black mold. Only on the branches, not leaves. No scale or other pests to be found. What exactly is this, should we be worried and how can we treat it?
Thanks!
(https://i.postimg.cc/3y4zmK4m/3-BB05249-4900-48-BF-84-E6-7-DC706-F64-F8-C.jpg) (https://postimg.cc/3y4zmK4m)

(https://i.postimg.cc/3ysVZPm6/6356243-F-02-F9-44-C8-BC60-B202-B7-F2-F817.jpg) (https://postimg.cc/3ysVZPm6)

(https://i.postimg.cc/0rYRV2tC/6-AADC83-C-D301-4700-B75-D-853877-DD9-D30.jpg) (https://postimg.cc/0rYRV2tC)

(https://i.postimg.cc/crTqNkGg/A9-F627-B0-EA55-47-D2-857-B-944-A047-FB4-EE.jpg) (https://postimg.cc/crTqNkGg)

(https://i.postimg.cc/cvJp17dD/D0991461-D526-4-E25-A5-C7-E41-FE00-FC67-F.jpg) (https://postimg.cc/cvJp17dD)

(https://i.postimg.cc/QFnRFBtj/FA8-E584-D-A62-C-4-F91-B1-F3-F2-EFD37055-B6.jpg) (https://postimg.cc/QFnRFBtj)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on April 26, 2020, 09:09:20 PM
It's benign.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dross99_si on April 26, 2020, 09:18:17 PM
thanks
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DSotM on May 03, 2020, 09:24:39 AM
Hi guys! Any clue what damage we are seeing here? They’ve taken full sun for two years now so I don’t believe it’s sun related (although this is first flush so maybe that plays a roll)z


(https://i.postimg.cc/crkcPGcz/5018-ADEA-E8-F1-4-C96-BEAA-2078-BCCCEDF4.jpg) (https://postimg.cc/crkcPGcz)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 03, 2020, 11:44:16 AM
Looks like Powdery Mildew.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tropical-farmer on May 03, 2020, 12:15:16 PM
I am seeing this in my new flushes in Carrie, interestingly some branch flushes don’t have this. This is leading me to believe its a chemical burn or a deficiency but i want to be sure. No recent fertilizer applied but my wife has raised beds around where she puts topping of dried horse manure with mulch. The tree is not irrigation daily and looks otherwise healthy. Had 30% flowers this year and around 15 mangoes reached golf ball size then turned yellow and dropped all but one. Any idea if this is a deficiency vs burn vs pest?
(https://i.postimg.cc/v1Rc36z0/67-AE1-D03-CB1-E-4-D46-8-DE7-A9-AF78-E063-A0.jpg) (https://postimg.cc/v1Rc36z0)

(https://i.postimg.cc/67HFBCm0/77263-F31-7780-4-B14-97-FF-94-B18-AE850-A5.jpg) (https://postimg.cc/67HFBCm0)

(https://i.postimg.cc/sGWLPqD6/C38395-FF-6-B76-4-CB1-B481-AC2971914-A0-F.jpg) (https://postimg.cc/sGWLPqD6)

(https://i.postimg.cc/Cdn9VBHG/F3854568-0-E32-45-FB-B3-CC-9-BFCB2244-F4-F.jpg) (https://postimg.cc/Cdn9VBHG)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 03, 2020, 12:51:55 PM
I don't recognize that interveinal bronzing.

The dessicated, turned-up tips appear to have been killed by Powdery Mildew.

Some of the green leaves are showing deficiency of Manganese.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tropical-farmer on May 03, 2020, 05:53:53 PM
Thanks Har. I will do the Micronutriets foliar spray asap. The bronze intervenial discoloration is a mystery.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pdang on May 03, 2020, 06:22:52 PM
Are these leaves normal for my LZ? Some of the new leaves are coming out twisted/curled + have slight browning/yellowing at the very tips. Some leaves also show a little bit of browning on the edges of the leaves as well. The newer sprouts at the bottom are perfectly shaped & colored compared to the leaves at the top. I recently did a micro-nutrient spray and a iron soil drench, but it hasn't been that long enough to show any effects. I also recently fertilized with a weak fish & kelp emulsion mix. This LZ is also planted in a heavy clay soil that has been amended with a potting mix. 

PS: Ignore the red mulch!

(https://i.postimg.cc/RWsf18wQ/IMG-4284.jpg) (https://postimg.cc/RWsf18wQ)

(https://i.postimg.cc/BPBPjwqF/IMG-4285.jpg) (https://postimg.cc/BPBPjwqF)

(https://i.postimg.cc/fJM0GZKf/IMG-4286.jpg) (https://postimg.cc/fJM0GZKf)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 03, 2020, 09:42:47 PM
Damage on mango new growth in the Spring, is almost always due to Powdery Mildew and/or wind.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on May 03, 2020, 10:51:31 PM
Here's a weird one. This is my sole Ice Cream Mango from the first bloom.

There had been a second mango on the tree that fell off when quite young--would it touching this mango cause this?

The spot is soft but the mango is firm. The mango sap smelled normal, and there's no detectable off odors coming from that spot.

Any ideas? Thanks!
(https://i.postimg.cc/njrmWYYf/20200503-104909-2.jpg) (https://postimg.cc/njrmWYYf)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: stephen on May 03, 2020, 11:38:05 PM
Hi, everyone! I just realized that there's a whole thread on problems for mangos! This is great :) Please forgive me for posting my question again. Just wanted to confirm if the cause of the black spots on this nam doc mai that I received recently is anthracnose. If so, should I go ahead and spray it with copper to keep it from spreading? I'd appreciate your wisdom, as I'm new to growing mangos. I'm in Southern California. Thank you!


(https://i.postimg.cc/K3P0N3XT/01.jpg) (https://postimg.cc/K3P0N3XT)

(https://i.postimg.cc/rKTnpjWN/02.jpg) (https://postimg.cc/rKTnpjWN)

(https://i.postimg.cc/MvYsfBm2/03.jpg) (https://postimg.cc/MvYsfBm2)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Oolie on May 04, 2020, 12:16:54 AM
In case you missed it.
http://tropicalfruitforum.com/index.php?topic=39104.msg386906#msg386906 (http://tropicalfruitforum.com/index.php?topic=39104.msg386906#msg386906)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: stephen on May 04, 2020, 12:42:51 AM
In case you missed it.
http://tropicalfruitforum.com/index.php?topic=39104.msg386906#msg386906 (http://tropicalfruitforum.com/index.php?topic=39104.msg386906#msg386906)

Oh thank you, Oolie! I appreciate it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gychang on May 04, 2020, 01:55:14 AM
any ideas what this is?  It was planted in the ground 3 weeks ago w/o fertilizer.. new flush came out a week and a half ago.
(https://i.postimg.cc/Lnb7ZVvY/Screen-Shot-2020-05-03-at-7-53-4520-PM.png) (https://postimg.cc/Lnb7ZVvY)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: LarryG on May 04, 2020, 09:15:05 AM
I planted an Angie mango tree 5 years ago. It has produced well the past two years, always very clean fruit with nice color. This year several of the fruit are splitting but not in the star shape typical of BBS. The leaves appear to be healthy. I don't believe that excessive rain is a factor. Any ideas?

(https://i.postimg.cc/bSqxzs9j/IMG-5069.jpg) (https://postimg.cc/bSqxzs9j)


(https://i.postimg.cc/gx2gVBRP/IMG-5068.jpg) (https://postimg.cc/gx2gVBRP)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 04, 2020, 08:54:52 PM
Fliptop, my only guess on that is hail damage, or from a thrown rock.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 04, 2020, 09:08:46 PM
gychang.  It could be the start of Powdery Mildew, or it could be fertilizer burn, such as from urea.  Many soil mixes have urea, and fresh manures and partially-cured manure composts have urea, and urine has urea--- such as dog pee.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 04, 2020, 09:21:52 PM
LarryG,
Deficiency of Calcium, or deficiency of other elements that affect the use of Calcium:  especially Boron, Copper, Silicon, Zinc.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: stephen on May 04, 2020, 10:06:02 PM
Har, can you please confirm my photos as well? I'd really appreciate it. Thank you!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: gychang on May 04, 2020, 10:19:58 PM
gychang.  It could be the start of Powdery Mildew, or it could be fertilizer burn, such as from urea.  Many soil mixes have urea, and fresh manures and partially-cured manure composts have urea, and urine has urea--- such as dog pee.

Thanks Har!

Think it's too late to spray with copper?  Also, is there an alternative you guys know of?  I live in Hawaii and it's upwards of 86-87 a lot of days here so i'm concerned about sun damage after copper.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on May 05, 2020, 09:06:50 PM
Thanks, Har! I'm still hoping at least some part of the mango remains edible, as I only have one more on the tree from its second bloom, and I do like this mango a lot.

Here's yet another issue. This is on one of my Pickering trees and it's some sort of deep gouge. I have no idea what caused it, but there is growth and panicles and baby fruit at the end of the branch. There is no gummosis oozing out of it. I haven't "treated" with anything (i.e., copper).

Do I cut this branch off or leave it be?

(https://i.postimg.cc/ft9jYLxT/20200505-202645-1.jpg) (https://postimg.cc/ft9jYLxT)

I must say, I grew up in southeast FLA with a Haden in the yard, and I never remember any fuss being made over the tree. Now that I'm growing mangos, I've had to deal with scale, powdery mildew, gummosis, etc. Geez...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 05, 2020, 09:38:51 PM
Treating that gouge with a copper spray would be good.  Or with Hydrogen peroxide.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 05, 2020, 10:02:18 PM
Stephen, OOlie's response to you was good.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 05, 2020, 10:05:20 PM
gychang, Copper is only slightly effective against Powdery Mildew on mango.

Google "mango Hawai'i Powdery Mildew products."  I have no first-hand knowledge of products registered for sale in your state.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: obrady on May 06, 2020, 11:40:41 PM
Hi all, I picked up this sickly mango tree at the local big box store figuring I would try my luck at bringing it back to health.  It is an Orange Sherbet variety in a 7gal pot.  I believe it has black spot and powdery mildew but would love an expert diagnosis. I have had it for 4 days and am spraying of neem oil.  I have been researching and watching videos these past few days, but I'm torn on what to do.  I have considered pruning, planting in ground (we have heavy clay soil though), or up potting to whiskey barrel until it hopefully improves. Thanks!


(https://i.postimg.cc/PPCMcFk0/IMG-2829.jpg) (https://postimg.cc/PPCMcFk0)

(https://i.postimg.cc/MMtDkCHJ/IMG-2830.jpg) (https://postimg.cc/MMtDkCHJ)

(https://i.postimg.cc/QBQmm9rt/IMG-2831.jpg) (https://postimg.cc/QBQmm9rt)

(https://i.postimg.cc/LqKvjkww/IMG-2832.jpg) (https://postimg.cc/LqKvjkww)

(https://i.postimg.cc/75TmCtsS/IMG-2833.jpg) (https://postimg.cc/75TmCtsS)

(https://i.postimg.cc/F76THXZ9/IMG-2834.jpg) (https://postimg.cc/F76THXZ9)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 07, 2020, 10:59:39 PM
Old damage from Powdery Mildew.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pdang on May 09, 2020, 02:25:48 PM
Is this a result of underwatering or because of the neem oil/copper spray I used? I've held back on watering for a couple of days, but I haven't seen this damage yet, and it seems to be spreading.

(https://i.postimg.cc/tnXzqKzQ/image0.jpg) (https://postimg.cc/tnXzqKzQ)

(https://i.postimg.cc/N984wsmk/image1.jpg) (https://postimg.cc/N984wsmk)

(https://i.postimg.cc/62x0S22Q/image2.jpg) (https://postimg.cc/62x0S22Q)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 09, 2020, 09:11:56 PM
It does look like damage from oil, in hot weather.  What were the dailly high temperatures during the next two days after you sprayed?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pdang on May 10, 2020, 02:55:24 PM
The temperatures were around 80-85, it wasn't extremely hot. I made sure that I sprayed during the evening around 5-6 when the sun was coming down. I don't see anymore leaves that were affected, but it could have been the problem.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 11, 2020, 08:24:43 PM
If your sprayer doesn't have a good agitator, you have to shake your sprayer more than once a minute to keep a mix with oil from separating.  The oil will float.  When you have sprayed nearly all the mix from your tank, you will suddenly be spraying nearly pure oil.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: obrady on May 13, 2020, 09:15:07 PM
Old damage from Powdery Mildew.

Thanks, Har!

Could that also be what is causing some of these new leaves to have issues?




(https://i.postimg.cc/McgyMXrm/IMG-2939.jpg) (https://postimg.cc/McgyMXrm)


(https://i.postimg.cc/2q1QSnT5/IMG-2940.jpg) (https://postimg.cc/2q1QSnT5)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 14, 2020, 08:44:53 AM
Yes, some of that probably is Powdery Mildew.  If you look at it with magnification, when the damage is very fresh, you may be able to see white powder--- that would be definitive.

Those black spots are probably Anthracnose moving into wind-damaged spots.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: canesgirl821 on May 14, 2020, 08:24:15 PM
I posted previously but still need help, realize I should have posted here to begin with, so I’ll give it another try.

My beloved Carrie isn’t looking great, despite her marvelous fruit production this year. It looks like several issues/deficiencies may be going on, would really appreciate help diagnosing and/or recommendations.

Whatever it is, it hasn’t touched my Nam Doc Mai right next to it.

Look forward to feedback from the forum, thank you!


I got one reply which suggested low iron/high pH, but I’m not sure how to rectify. Any assistance or suggestions appreciated!
(https://i.postimg.cc/CZcSGnyr/0-E48-F304-9880-4-AAB-B8-D1-B79-E397-B8935.jpg) (https://postimg.cc/CZcSGnyr)

(https://i.postimg.cc/MfQwJsng/6-D76-C7-D8-F0-AD-42-C2-8485-F3-EA207-B5933.jpg) (https://postimg.cc/MfQwJsng)

(https://i.postimg.cc/47MGMCxz/9731-E259-AF54-4970-ADB6-EA853-B66419-A.jpg) (https://postimg.cc/47MGMCxz)

(https://i.postimg.cc/9RzVJXCm/A486-B2-DA-D130-4-F77-A1-D5-89-ABC079-C9-AA.jpg) (https://postimg.cc/9RzVJXCm)

(https://i.postimg.cc/vDgbnm0X/B79-AEF72-7754-4258-82-D2-3-C6-B3611-AC3-A.jpg) (https://postimg.cc/vDgbnm0X)

(https://i.postimg.cc/nsFn9YWQ/BE10-A08-C-0-A30-4-C2-A-A297-1-C39-AC4-AE56-A.jpg) (https://postimg.cc/nsFn9YWQ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 14, 2020, 08:53:21 PM
canesgirl,

Severe Manganese deficiency, and also Iron deficiency.

Different truck loads of fill-dirt, and buried construction debris, proximity to house pad, etc., can make that sort of difference in your results.

Were you watching when these trees were planted?  What did the soil look like when the holes were dug?  Have you had a lab analyze your soil?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: canesgirl821 on May 14, 2020, 09:11:57 PM
Har, Thank you for your reply. The Nam Doc Mai is actually closer the the house. Here’s a pic of this tree when planted 6 years ago (wish I knew why the host is rotating it), I was watching when all my trees were planted but honestly I wasn’t paying attention to the soil. I have fertilized fairly regularly, nothing special ... just 8-3-9 or 6-4-6 mixes, and I prune. I have not had the soil analyzed, only recently noticed the issue so trying to figure out how to address it. I know my soil is quite rocky, black toward the top and more grey mixed in further down, that’s about it. How would I go about getting it analyzed?
I wrote in my other post, my dream is to win the lotto and have you care for my trees! :)

(https://i.postimg.cc/1nTHNBvm/0-F15-EF29-F133-4271-BF45-93-F7660-E9022.jpg) (https://postimg.cc/1nTHNBvm)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 14, 2020, 10:56:15 PM
Thank you.

I assume, from your description of grey, rocky soil, that you have limestone or shell rock, covered with some black sandy loam or with muck, that was placed there for sodding.

You could get a 50-pound bag of prilled Sulfur, such as Tiger-90 or similar, probably for around $30, and spread it all within a circle twice the radius of the tree's canopy, to within about a foot of the trunk.  This will lower the pH of the soil's surface, and reactivate some of the fertilizer that you put down previously.  Do this, with some fruit tree fertilizer, three times a year, until the tree greens up, in a couple of years.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on May 15, 2020, 02:05:45 PM
I am still struggling with healthy mangoes suddenly drying up and dying. I noticed that it happens to mangoes with pencil sized trunk, e.g., 3-5 gallon mangoes. Mangoes with bigger trunk > 15 gals are seem to immune to this and thrive. I applied Abound and Regalia CG fungicides without any luck. If anyone has any insights or knows how to prevent this, please let me know.

Seemingly healthy Raw Honey.

(https://i.postimg.cc/4YJbtkDF/RH2.jpg) (https://postimg.cc/4YJbtkDF)

Suddenly drying up.

(https://i.postimg.cc/xNvMJtt2/RH1.jpg) (https://postimg.cc/xNvMJtt2)

Pickering with thicker trunk thriving.

(https://i.postimg.cc/21cvZqFV/pickering.jpg) (https://postimg.cc/21cvZqFV)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: canesgirl821 on May 15, 2020, 09:09:57 PM
Thank you.

I assume, from your description of grey, rocky soil, that you have limestone or shell rock, covered with some black sandy loam or with muck, that was placed there for sodding.

You could get a 50-pound bag of prilled Sulfur, such as Tiger-90 or similar, probably for around $30, and spread it all within a circle twice the radius of the tree's canopy, to within about a foot of the trunk.  This will lower the pH of the soil's surface, and reactivate some of the fertilizer that you put down previously.  Do this, with some fruit tree fertilizer, three times a year, until the tree greens up, in a couple of years.

Har, Thanks again for the advice, greatly appreciated. Last questions, any idea where I could buy Tiger 90 locally and should I water it in, like fertilizer?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: palingkecil on May 15, 2020, 09:58:13 PM
I am still struggling with healthy mangoes suddenly drying up and dying. I noticed that it happens to mangoes with pencil sized trunk, e.g., 3-5 gallon mangoes. Mangoes with bigger trunk > 15 gals are seem to immune to this and thrive. I applied Abound and Regalia CG fungicides without any luck. If anyone has any insights or knows how to prevent this, please let me know.

Seemingly healthy Raw Honey.

(https://i.postimg.cc/4YJbtkDF/RH2.jpg) (https://postimg.cc/4YJbtkDF)

Suddenly drying up.

(https://i.postimg.cc/xNvMJtt2/RH1.jpg) (https://postimg.cc/xNvMJtt2)

Pickering with thicker trunk thriving.

(https://i.postimg.cc/21cvZqFV/pickering.jpg) (https://postimg.cc/21cvZqFV)
Are those on turpentine rootstock? It happened to my Pickering and Little Gem on turpentine. No more turpentine for me, except Sweet Tart and Honey Kiss
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 15, 2020, 11:45:59 PM
Canesgirl,

Universal Growers Supply in Pompano,

Truly Tropical in Delray Beach.

rain
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 15, 2020, 11:50:20 PM
palingkecil,

I am not familiar with 'Raw Honey.'

Photo 1:  Looks like an admirable setup!  How many hours of direct sunlight?  What is in the soil mix?  Do you use city water?

Photo 2:  I have never seen that double-row of dots on mango leaves.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on May 16, 2020, 12:03:09 AM


I am not familiar with 'Raw Honey.'

Photo 1:  Looks like an admirable setup!  How many hours of direct sunlight?  What is in the soil mix?  Do you use city water?

Photo 2:  I have never seen that double-row of dots on mango leaves.

#1 It gets direct sunlight till 3 pm or so. It was in potting soil in a 15 gal pot, but when I transplanted in RB panels I used sand and
topsoil mix to fill the panels (used ~3 cuft). I use dechlorinated city water with a whole house GAC filter.

#2 those dots are probably abound residuals.

I believe raw honey is renamed Shwe Hintha from Zill.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 16, 2020, 11:56:16 AM
I do know Shwe Hintha.

Perhaps the topsoil was from a field that used to grow tomatoes or peppers or eggplants, until Southern Bacterial Wilt became a problem.  That stuff can hang around for years.  The rapid wilting looks like that, but could be from something else, such as Phytophthora fungus in the roots.  You might be able to save the tree with Flanker or Aliette, or equivalent.  While the tree is still alive, you can send samples to a lab for diagnosis;  don't send an already dead sample.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on May 16, 2020, 12:04:35 PM
I do know Shwe Hintha.

Perhaps the topsoil was from a field that used to grow tomatoes or peppers or eggplants, until Southern Bacterial Wilt became a problem.  That stuff can hang around for years.  The rapid wilting looks like that, but could be from something else, such as Phytophthora fungus in the roots.  You might be able to save the tree with Flanker or Aliette, or equivalent.  While the tree is still alive, you can send samples to a lab for diagnosis;  don't send an already dead sample.

Thank you Har for the info, I believe you are correct, it might be from infected topsoil or Gromulch. I recently lost a lychee in pot as well after adding Kellog's Gromulch on top 1" from the same batch. I will get some Aliette (found it on Amazon but no Flanker) ASAP and try to save the tree.

Thanks again for the valuable info, I didn't know about Southern Bacterial Wilt.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 16, 2020, 07:39:48 PM
Remember not to eat anything for at least a year, from any tree that you apply anything like that on, unless the label allows otherwise.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: canesgirl821 on May 16, 2020, 07:50:21 PM
Canesgirl,

Universal Growers Supply in Pompano,

Truly Tropical in Delray Beach.

rain

Har, Thanks again, will try to pick up this week and get started on this regimen.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on May 22, 2020, 08:22:34 PM

(https://i.postimg.cc/9rMYntTV/20200521-170151.jpg) (https://postimg.cc/9rMYntTV)




(https://i.postimg.cc/XZMKqRP7/20200521-170333.jpg) (https://postimg.cc/XZMKqRP7)
My mango tree is flowering but not fruiting. It has been infested with sooty mold but is getting better. The flowers look black after a few days and there are no fruitlets. What should I do?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DSotM on May 22, 2020, 08:28:30 PM
Okay, so perhaps I’m stubborn in trying to get a mango to grow here that was clearly unsuccessful the first time around. But to my defense I didn’t know if the first issue was user error or a product of location. The exact same issue occurred previously. A seemingly healthy, young grafted keitt is planted (this time it lasted an entire year), then at the start of summer it’s leaves start to droop, it’s branches from the growing top downward start wrinkling, and it eventually dies. Upon inspection both trees had tons of either palm roots, privet roots or jasmine roots completely intertwined in its own root ball. I have a healthy seedling growing at the base of another queen so I don’t believe it’s the queen palm.

Anyway, the jasmines are my neighbor’s, planted directly behind my mango and the privet is about 40 ft tall planted about 15 feet to its right. Here are some attached photos. Last time this happened I pulled it out and brought it inside, copper fungicide drenched it’s roots and then watched it die. What can I do to save it?

Is this too much competition and lack of water? It gets a lot of water but it’s area is never soggy.
(https://i.postimg.cc/7JvRXSjr/C3-C7-B9-F2-2-C27-482-E-AC02-A28140-ADC591.jpg) (https://postimg.cc/7JvRXSjr)

(https://i.postimg.cc/RNB8HQcc/F43-DB23-E-224-D-4-C32-B022-164-A15-E276-B8.jpg) (https://postimg.cc/RNB8HQcc)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 22, 2020, 11:31:44 PM
DScotM,

The base of the tree looks as though it was slapped by a weedeater.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 22, 2020, 11:37:01 PM
Jaboticaba45,

Have you had your soil analyzed, or your mango leaves analyzed, by a lab?

Have you applied Calcium and a full mixed fertilizer, with all the micronutrients?

Do you have plenty of flies or bees, to do the pollination?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DSotM on May 22, 2020, 11:43:29 PM
DScotM,

The base of the tree looks as though it was slapped by a weedeater.
No weeds! Weed eater has never been in the backyard
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Oolie on May 23, 2020, 03:01:13 AM
DScotM,

The base of the tree looks as though it was slapped by a weedeater.
No weeds! Weed eater has never been in the backyard

Looks like rabbits girdled it.

You can try to repair it by bridge grafting.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DSotM on May 23, 2020, 01:50:16 PM
Thanks but I don’t believe it is girdled. The bark has always looked that way and nothing ever damaged it
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on May 23, 2020, 08:48:38 PM
Jaboticaba45,

Have you had your soil analyzed, or your mango leaves analyzed, by a lab?

Have you applied Calcium and a full mixed fertilizer, with all the micronutrients?

Do you have plenty of flies or bees, to do the pollination?

Guanabanus,
I have not had my soil analyzed or leaves by a lab. I have just started to fertilize it with 8-3-9 because I didn't have fertilizer before, and there are plenty of insects I see on the flowers.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 23, 2020, 09:43:13 PM
I recommend that you get granular gypsum, and apply 1/4 as much as you apply of 8-3-9, each time you fertilize.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on May 24, 2020, 12:52:58 PM
Ok will do. Thanks for your help!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: shinzo on May 25, 2020, 12:51:38 PM
Hi all, i noticed a black spot on a branch of my mango seedling (unknown cultivar). The spot is exactly on the same area where there was a contact with a leaf from a second branch (the leaf was stuck against the nearby branch at a leaf node so when i displaced the leaf i found the spot and the leaf node fell, as if the prolonged contact and humidity enduced the black spot, but i am not sure if it is the case or juste a coincidence).

Should i worry about this spot? in that case should i cut the whole branch to avoid spreading to the whole tree (it is the smaller one of the 2 future main scaffold branches,the one oriented to the right).
If there is no worry about it i will leave the branch.

Here are some pics with a closeup on the spot :

(https://i.postimg.cc/x1xd2GzP/Black-spot.jpg)

(https://i.postimg.cc/y8BQjS6h/DSC-0190.jpg)

(https://i.postimg.cc/YSCXKKWh/DSC-0194.jpg)

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 25, 2020, 04:36:15 PM
Pruning it off would be easiest.

Or you could apply a Bordeaux paste (lime and Copper Sulfate, or simply spray with Copper Sulfate or with a "liquid Copper."
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Oolie on May 25, 2020, 04:38:13 PM
My Maha acquired an infection like that earlier this year. I pruned heavily to try to save it, but it killed the tree.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: shinzo on May 25, 2020, 05:09:26 PM
Thank you guys for your Quick replies. I will prune it then.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: shinzo on May 26, 2020, 09:52:57 AM
Hi all, today i cut the branch and i share here more detailed pics of the inside of the branch (a cut at the injured portion), may be it will be useful to future readers.
Apparently the black spot was limited to the bark. It also did not extend to an area out of the visible black spot. I cut the branch at the base and it was clean.
@ Oolie: I hope that the infection that killed your tree was more extended than my case (sorry for the loss by the way)

(https://scontent.ftun2-1.fna.fbcdn.net/v/t1.15752-9/100503329_244220793516955_2647978317306658816_n.jpg?_nc_cat=102&_nc_sid=b96e70&_nc_eui2=AeGWqBHMhx6OH8ZkH3j-x9G74Qz8VgO295LhDPxWA7b3kil05TlQ5nj0MVGIiBcmHPo&_nc_ohc=p5ulPZxUwLUAX-FXqqF&_nc_ht=scontent.ftun2-1.fna&oh=7ad6f3c8aec8af2f56b2b3b8cdf580ca&oe=5EF2278B)

(https://scontent.ftun2-1.fna.fbcdn.net/v/t1.15752-9/101055132_1007453499711148_5754497440602390528_n.jpg?_nc_cat=105&_nc_sid=b96e70&_nc_eui2=AeEv6HOKKDyZ22xaZz6kxXNwuyzVlvPVlzm7LNWW89WXOYZt6kJZlfUzQUn6Rnftp6Y&_nc_ohc=uHg4i_oBCKEAX-YdKO_&_nc_ht=scontent.ftun2-1.fna&oh=94597038802ad6f58b4b4154c8f5ff71&oe=5EF2CA9D)

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 26, 2020, 10:27:29 AM
That infection is all the way to the cambium layer, so it is not just superficial.  You did well to prune.  I hope you sanitized your clippers after cutting into the infected area.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: shinzo on May 26, 2020, 10:58:24 AM
That infection is all the way to the cambium layer, so it is not just superficial.  You did well to prune.  I hope you sanitized your clippers after cutting into the infected area.
Ah ok, thank you for the clarification and for your initial advice.
I cut the whole branch from the base as the first cut in order to avoid spreading any infection. then i started to explore the cut branch and take the pics away from the tree. And yes i sanitized the clippers afterwards as well for future utilizations.
Best regards
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Oolie on May 26, 2020, 07:25:21 PM
That infection is all the way to the cambium layer, so it is not just superficial.  You did well to prune.  I hope you sanitized your clippers after cutting into the infected area.
Ah ok, thank you for the clarification and for your initial advice.
I cut the whole branch from the base as the first cut in order to avoid spreading any infection. then i started to explore the cut branch and take the pics away from the tree. And yes i sanitized the clippers afterwards as well for future utilizations.
Best regards

It is better to do it this way to avoid spreading the infection.

Though in my case it did not appear to have spread from the surface, but the cambium was already infected down to the trunk, even though it was not evident from the bark. In other words I caught it too late though it looked very similar to yours. Cross your fingers.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on May 27, 2020, 08:02:28 PM
So I just found out that my mango trees have anthracnose. There were tiny black dots on the flower panicles. I sprayed them both with neem oil. Any other recommendations? I sprayed the flower panicles with it too. Is there any chance of fruit set?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 28, 2020, 10:17:03 AM
I haven't tried spraying oils on mango flowers.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Luisport on May 30, 2020, 09:38:00 AM
Hello everyone! I nead an advice. My small haden mango tree is sprouting new gowths near the base. She is not grafted. I should take them off or let her develop lower branching?

 
(https://i.postimg.cc/0KwNDVkw/DSC-1147.jpg) (https://postimg.cc/0KwNDVkw)


(https://i.postimg.cc/d7NQfbDC/DSC-1146.jpg) (https://postimg.cc/d7NQfbDC)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Orkine on May 30, 2020, 12:57:09 PM
While this is neither a desease not a nutritional problem, I say take it off.  THere is too low when it comes to branching.  Your branch and any fruits will be on the ground when and if it fruits. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Luisport on May 30, 2020, 12:58:33 PM
While this is neither a desease not a nutritional problem, I say take it off.  THere is too low when it comes to branching.  Your branch and any fruits will be on the ground when and if it fruits.
Thank you very much!  ;D
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 31, 2020, 12:32:42 PM
As your plant is not grafted, it is not a 'Haden.'  It is a "Haden seedling."  It is a new variety, which may or may not resemble a 'Haden.'  If it proves to be good, you can put your own name on it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Luisport on May 31, 2020, 12:37:57 PM
As your plant is not grafted, it is not a 'Haden.'  It is a "Haden seedling."  It is a new variety, which may or may not resemble a 'Haden.'  If it proves to be good, you can put your own name on it.
Thank's. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pocketsandmangos on June 03, 2020, 07:25:21 PM
Coconut cream flushed really good but i noticed some curling and browning on some of the flushes (tipped like i normally do). Not every leaf but probably 2-3 for every flush. Glenn flushed but did not have any curling or browning on the edges. Not sure if a deficiency or disease.
(https://i.postimg.cc/bGdx8hk1/mango-2.jpg) (https://postimg.cc/bGdx8hk1)

(https://i.postimg.cc/njDqjGdz/IMG-0611.jpg) (https://postimg.cc/njDqjGdz)

(https://i.postimg.cc/BPfHxPyC/mango-3.jpg) (https://postimg.cc/BPfHxPyC)

(https://i.postimg.cc/H8053s11/mango1.jpg) (https://postimg.cc/H8053s11)

Thanks!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 03, 2020, 08:23:11 PM
Probably Powdery Mildew.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pocketsandmangos on June 03, 2020, 08:27:45 PM
Probably Powdery Mildew.

Thanks Har!

IS there anything i should do now or just let it grow out?

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mrallniter7 on June 04, 2020, 10:47:58 AM
Hello Everyone,

Looking for help in understanding why this is happening to my mangos this year.  The mango (Kent) tree is about 8+ years old and over the last 2 or 3 years, I have noticed more and more of this issue getting worst with time.  This year 90% of the mangos have this on them and then they just drop off the tree.  Please see photo below - Thank you for any help or feedback.  :)

(https://i.postimg.cc/Snj0M5ML/mangos.jpg) (https://postimg.cc/Snj0M5ML)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on June 04, 2020, 11:54:37 AM
Hello Everyone,

Looking for help in understanding why this is happening to my mangos this year.  The mango (Kent) tree is about 8+ years old and over the last 2 or 3 years, I have noticed more and more of this issue getting worst with time.  This year 90% of the mangos have this on them and then they just drop off the tree.  Please see photo below - Thank you for any help or feedback.  :)

(https://i.postimg.cc/Snj0M5ML/mangos.jpg) (https://postimg.cc/Snj0M5ML)

I'm sorry to see you lost so many mangos.  It looks like Mango Bacterial Black Spot to me.  I've read Kent is highly susceptible to it.  I'll let others with more experience chime in though as I'm not an expert like others on the forum
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 04, 2020, 07:22:55 PM
mrallniter7,

Although Mango Bacterial Black Spot may have started this, I don't actually see it in this photo.  It looks more like a syndrome called "the rots", in which several fungal and bacterial diseases gang together.

Please send this photo to the Plant Diagnostic Clinic, Tropical Research and Education Center (TREC), Homestead, Florida.

If they are interested in a live sample, follow their collection and sending instructions.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pocketsandmangos on June 05, 2020, 11:52:49 AM
Another possibly strange flush? I have only had this lemon zest for about a month and it is flushing but the leaves look...odd?

(https://i.postimg.cc/G4q86JF5/mango5.jpg) (https://postimg.cc/G4q86JF5)

(https://i.postimg.cc/nCxXzwTW/mango6.jpg) (https://postimg.cc/nCxXzwTW)

(https://i.postimg.cc/ph8dVDjx/mango7.jpg) (https://postimg.cc/ph8dVDjx)



thanks!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 05, 2020, 06:59:41 PM
Possibly Deficiency of Zinc, but too soon to tell.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on June 17, 2020, 08:21:43 PM
Hello Everyone.  Today I picked up a brand new Guava mango tree, and noticed that the bark looks like it's rotting somewhat on the trunk.  Unfortunately I didn't have the luxury of switching it for another tree and was told that due to COVID there's not many trees available.  So now I have this tree, and want to give it a good home and a great chance of being happy and making tons of mangos.  The trunk is concave where the bark looks like it's rotting, so I'm not sure how that happened. 

What should I use to treat this area?  Should I apply copper to it on a monthly basis for the next 6 months while it's establishing its roots, or is there some other regimen?  Any idea what could have caused this?  Is this something that I'll have to deal with for the long-term where I'll always need to apply copper?  Will the tree be healthy even though it has this rot or is this a pointless exercise and I need to get rid of the tree? 

I'm happy to take more pictures and post if it's helpful.

Thanks all!!

(https://i.postimg.cc/XB7Zsp0p/IMG-20200617-183913.jpg) (https://postimg.cc/XB7Zsp0p)

(https://i.postimg.cc/RqMnSbn4/IMG-20200617-183928.jpg) (https://postimg.cc/RqMnSbn4)

(https://i.postimg.cc/87Fv8Jfv/IMG-20200617-183935.jpg) (https://postimg.cc/87Fv8Jfv)

(https://i.postimg.cc/zV2hPSv5/IMG-20200617-183943.jpg) (https://postimg.cc/zV2hPSv5)

(https://i.postimg.cc/2qhB6sw8/IMG-20200617-184011.jpg) (https://postimg.cc/2qhB6sw8)

(https://i.postimg.cc/5j3L8MMX/IMG-20200617-184238.jpg) (https://postimg.cc/5j3L8MMX)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 17, 2020, 10:36:01 PM
When trees fall over in the nursery, or when laid on their side for delivery in an open truck without good tarping, excess heat/sunburn kills the bark and cambium layer.

I suggest that you cut the tree off completely, below the affected area.  This may kill the tree.  If the tree survives by regrowing, you may have a nice, multi-trunked, low, bushy tree.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on June 18, 2020, 06:35:15 AM
When trees fall over in the nursery, or when laid on their side for delivery in an open truck without good tarping, excess heat/sunburn kills the bark and cambium layer.

I suggest that you cut the tree off completely, below the affected area.  This may kill the tree.  If the tree survives by regrowing, you may have a nice, multi-trunked, low, bushy tree.

Thanks Har.  I was afraid of severe measures.  I will try and make arrangements for a different tree.  It was a 7 Gallon, so hopefully I can exchange for a 3 Gallon if there's no more 7 Gallons.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Orkine on June 18, 2020, 10:29:24 AM
When trees fall over in the nursery, or when laid on their side for delivery in an open truck without good tarping, excess heat/sunburn kills the bark and cambium layer.

I suggest that you cut the tree off completely, below the affected area.  This may kill the tree.  If the tree survives by regrowing, you may have a nice, multi-trunked, low, bushy tree.

Thanks Har.  I was afraid of severe measures.  I will try and make arrangements for a different tree.  It was a 7 Gallon, so hopefully I can exchange for a 3 Gallon if there's no more 7 Gallons.
I have successfully brought back a couple of plants with that type of damage, 2 from sunburn and the third from a vicious rabbit attack.
That said, I wouldn't but a new tree where I have to do this unless it is heavily discounted.

Go with your instinct and have it replaced.  If you are putting it in the ground, a 3-gallon tree will be producing for you sooner than you know.


Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on June 26, 2020, 09:15:22 PM
When trees fall over in the nursery, or when laid on their side for delivery in an open truck without good tarping, excess heat/sunburn kills the bark and cambium layer.

I suggest that you cut the tree off completely, below the affected area.  This may kill the tree.  If the tree survives by regrowing, you may have a nice, multi-trunked, low, bushy tree.

Thanks Har.  I was afraid of severe measures.  I will try and make arrangements for a different tree.  It was a 7 Gallon, so hopefully I can exchange for a 3 Gallon if there's no more 7 Gallons.
I have successfully brought back a couple of plants with that type of damage, 2 from sunburn and the third from a vicious rabbit attack.
That said, I wouldn't but a new tree where I have to do this unless it is heavily discounted.

Go with your instinct and have it replaced.  If you are putting it in the ground, a 3-gallon tree will be producing for you sooner than you know.

Tree was able to be replaced so a great outcome & very happy!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on July 04, 2020, 04:23:10 PM
I topworked 2 Keitt trees because they both had bad case of MBBS..
on one tree I put Pickering and dwarf Hawaiian, on another tree Pickering and honey kiss
This is happening to both trees, all grafts, At first the new flush comes out looks perfect then it turns into what you see in the pictures, can anybody give me an idea what this could be and how to treat it?
(https://i.postimg.cc/VJMXTNVg/20200704-071224.jpg) (https://postimg.cc/VJMXTNVg)

(https://i.postimg.cc/yWb989qn/20200704-071152.jpg) (https://postimg.cc/yWb989qn)

(https://i.postimg.cc/yWb989qn/20200704-071152.jpg) (https://postimg.cc/yWb989qn)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 05, 2020, 09:14:22 AM
Looks like Powdery Mildew damage, which is unexpected in our current hot weather.  When did this damge show up?

Another possibility is that the tree is sitting in a hole that had a bunch of organic matter added, or that there is too thick a layer of mulch piled under it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on July 05, 2020, 09:44:38 AM
Thanks Har
the stump is about 7 years in the ground, and it never had the problem before I Topworked it..
it did have MBBS
It does have a lot of mulch on top probably about 8 in horse manure mix but I haven't added anything for quite a while maybe a year or so..

do you think I should put some sulfur on it now in this weather
??
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on July 05, 2020, 10:01:02 AM
Thanks Har
the stump is about 7 years in the ground, and it never had the problem before I Topworked it..
it did have MBBS
It does have a lot of mulch on top probably about 8 in horse manure mix but I haven't added anything for quite a while maybe a year or so..

do you think I should put some sulfur on it now in this weather
??

Horse manure is no bueno for mango.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 05, 2020, 01:45:12 PM
After severe prunings, what remains of the tree becomes much more sensitive to too much fertilizer.  So your tree is reacting now to the horse manure, which the tree was better able to handle before.

Sulfur sprays are harmful in hot weather.  Only spray Sulfur when the forecasts for the next 3 days are for a maximum of 85-degrees F.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Capt Ram on July 06, 2020, 10:57:22 AM
okay thanks Har..
It's been about a year but I suppose there's still enough in there to make a difference, I won't put anymore on that's for sure
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JulianoGS on July 08, 2020, 12:10:15 PM
Is this a good method to remove fungus or other tree related issues?

https://www.youtube.com/watch?v=yFD97jAdtKU (https://www.youtube.com/watch?v=yFD97jAdtKU)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 08, 2020, 05:40:23 PM
Test spray!  Find out.

I prefer to use Potassium Bicarbonate, instead of Sodium Bicarbonate (baking soda), as I don't want to build up excess Sodium levels.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bovine421 on July 08, 2020, 07:24:29 PM
I got a Ice Cream and Julie 7 gal mango tree's from Truly Tropical s in the beginning June. The trees were very clean but after being advised on this forum of their susceptibility issues, i would like to start a fungicide regimen for anthracnose. After studying this forum there two products mention here that i am interested in. First a protective  Bonide Copper Fungicide which I already have secondly is a preventive organocide plant doctor systemic fungicide.
I understand that i can not use both at same time. For a simplified long term regimen which would you use first and would you alternate? At first sign of flowering would you switch to sulfur fungicide until temperatures reach 85 degrees? Would you suggest bi-weekly or monthly applications? and finally is there any months that Julie and Ice Cream would not have to be treated?  I would like to thank the hero members for contributing to my education :)
(https://i.postimg.cc/w1Fx6xV0/thumbnail-1-nnb.jpg) (https://postimg.cc/w1Fx6xV0)
I've noticed some deterioration in Ice Cream leaves

(https://i.postimg.cc/1fTLv5kT/thumbnail-1-xxxz.jpg) (https://postimg.cc/1fTLv5kT)
Julie lives in low rent district unlike granddaughter Dot who has prime real estate.Lol :D
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: y0rascal on July 09, 2020, 04:22:47 PM
Pictures of my 7 gallon orange essence seems to have stalled the growth. Also leaves might be burning? Not sure

(https://i.postimg.cc/6TkTK3N4/20200709-140236.jpg) (https://postimg.cc/6TkTK3N4)

(https://i.postimg.cc/RW9F3DhM/20200709-140241.jpg) (https://postimg.cc/RW9F3DhM)

(https://i.postimg.cc/PCrHnsN8/20200709-140249.jpg) (https://postimg.cc/PCrHnsN8)

(https://i.postimg.cc/VSJc5qqf/20200709-140252.jpg) (https://postimg.cc/VSJc5qqf)

(https://i.postimg.cc/68jX9jGb/20200709-140303.jpg) (https://postimg.cc/68jX9jGb)

(https://i.postimg.cc/cgYyBdkP/20200709-140315.jpg) (https://postimg.cc/cgYyBdkP)

(https://i.postimg.cc/JHLwTS90/20200709-140318.jpg) (https://postimg.cc/JHLwTS90)

(https://i.postimg.cc/H84qFBg2/20200709-140323.jpg) (https://postimg.cc/H84qFBg2)

LSO PICTURES OF MY HONEY KISS TREE, I RECENTLY PLABTED UP TO A 15 GALLON AS THE ROOTS WHERE COMING OUT OF THE BOTTOM OF THE POT.


(https://i.postimg.cc/mz7JF8ts/20200709-140339.jpg) (https://postimg.cc/mz7JF8ts)

(https://i.postimg.cc/3076jmvD/20200709-140343.jpg) (https://postimg.cc/3076jmvD)

(https://i.postimg.cc/SX2wmy4j/20200709-140353.jpg) (https://postimg.cc/SX2wmy4j)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bovine421 on July 09, 2020, 10:10:39 PM
I got a Ice Cream and Julie 7 gal mango tree's from Truly Tropical s in the beginning June. The trees were very clean but after being advised on this forum of their susceptibility issues, i would like to start a fungicide regimen for anthracnose. After studying this forum there two products mention here that i am interested in. First a protective  Bonide Copper Fungicide which I already have secondly is a preventive organocide plant doctor systemic fungicide.
I understand that i can not use both at same time. For a simplified long term regimen which would you use first and would you alternate? At first sign of flowering would you switch to sulfur fungicide until temperatures reach 85 degrees? Would you suggest bi-weekly or monthly applications? and finally is there any months that Julie and Ice Cream would not have to be treated?  I would like to thank the hero members for contributing to my education :)
(https://i.postimg.cc/w1Fx6xV0/thumbnail-1-nnb.jpg) (https://postimg.cc/w1Fx6xV0)
I've noticed some deterioration in Ice Cream leaves

(https://i.postimg.cc/1fTLv5kT/thumbnail-1-xxxz.jpg) (https://postimg.cc/1fTLv5kT)
Julie lives in low rent district unlike granddaughter Dot who has prime real estate.Lol :D
All for none and none for all! This is what i came up with from grinding this forums search engine.
Powdery mildew prevention at first sign of flowering start sulfur fungicide spraying weekly.Stop spraying when flowers open until fruit set. Resume spraying when fruit are the size of BB.  Stop again then the fruit are the size of golf balls or high day time temperatures are above 80 degree's. Switch to Cooper fungicide for anthracnose spraying Bi-weekly until  a couple weeks before harvest. Prune after harvest stop spraying after October during the dry season. Resume again during flowering season. Backyard growers simplified regimen of spraying for susceptible varieties such as (Ice Cream) (Julie) (White Piri) (Dot)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 09, 2020, 11:24:43 PM
YouRascal, your tree is full of new growth in your pictures.

And next time when you worry that it has been a while since the last flush of new growth, remember that trees alternate between flushes of root growth, and flushes of branch growth---  month or two between branching flushes, except on ridiculously fast growers like VP.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: y0rascal on July 11, 2020, 06:55:23 AM
Har I meant to say that this new growth seems to have stalled. its been like you see in the pictures for about a month.

Also what about the large brown spots on the leaves of the honey kiss?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 11, 2020, 11:52:32 AM
y0rascal,

I see two spots of sunburn or oil burn, such as from spraying in hot weather.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: sampatel on July 19, 2020, 03:01:55 PM
Hi All,
Please help with issues affecting new growth on Kesar tree. Tree is 3 year old and was growing fine so far. Starting this year, the new growth leaeves are very thin and curly. Also many shoots come out of one node - sometimes as many a 8-10 - some of them get aborted and then again tree pushes with more shoots but none of the new shoots are in healthy condition. Tree is received enough water and 0-3-16 fertilizer. I will appreicate any help. Thank you.


(https://i.postimg.cc/p5WcgNWm/Mango1.jpg) (https://postimg.cc/p5WcgNWm)

(https://i.postimg.cc/gnBtBBf0/Mango-2.jpg) (https://postimg.cc/gnBtBBf0)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pineislander on July 19, 2020, 04:52:00 PM
Looks like a minor nutrient deficiency maybe more than one and the tree is fighting with grass growing right in the root zone. Have you given it any micronutrients at all?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: sampatel on July 19, 2020, 08:42:00 PM
Looks like a minor nutrient deficiency maybe more than one and the tree is fighting with grass growing right in the root zone. Have you given it any micronutrients at all?
I am giving it fertilizer 0-3-16 (Har's mix) which is supposed to contain all micronutrients. The grass is not next to trunk for 4 foot diameter area. after that grass is there but it is same for other mangoes as well and no such problems on other trees?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on July 19, 2020, 10:31:58 PM
Looks like a minor nutrient deficiency maybe more than one and the tree is fighting with grass growing right in the root zone. Have you given it any micronutrients at all?
I am giving it fertilizer 0-3-16 (Har's mix) which is supposed to contain all micronutrients. The grass is not next to trunk for 4 foot diameter area. after that grass is there but it is same for other mangoes as well and no such problems on other trees?

That tree looks a little small/young to be using that fertilizer (the 0-3-16 is for a tree that is more on the mature side).  Hard to tell how big the tree really is, maybe post a full picture.

If I am right about its suze, you might want to use a micro nutrient foliar and a more rounded fertilizer like 8-2-12 or 8-3-9.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: sampatel on July 20, 2020, 08:17:11 AM
Looks like a minor nutrient deficiency maybe more than one and the tree is fighting with grass growing right in the root zone. Have you given it any micronutrients at all?
I am giving it fertilizer 0-3-16 (Har's mix) which is supposed to contain all micronutrients. The grass is not next to trunk for 4 foot diameter area. after that grass is there but it is same for other mangoes as well and no such problems on other trees?

That tree looks a little small/young to be using that fertilizer (the 0-3-16 is for a tree that is more on the mature side).  Hard to tell how big the tree really is, maybe post a full picture.

If I am right about its suze, you might want to use a micro nutrient foliar and a more rounded fertilizer like 8-2-12 or 8-3-9.

Sorry for missing to state size of the tree. The pictures are just one branch of the tree. The entire tree is about 12 foot tall and about 9-10 foot wide in diameter with 4 wide trunk. So far it was given 8-3-9 (Excalibur) every 2 months in summer. However this year it developed this problem right from spring and so I tried with 0-3-16.

If you think it needs foliar spray then please recommend product name. Thank you.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: weiss613 on July 20, 2020, 09:14:09 AM
In the spring up till the beginning of June we were in drought conditions so fertilizers had a better chance of causing burns. And also watering is very subjective. There are so many factors that effect how much water gets down to the roots which I won’t get into that also could have effected those leaves. Additionally when I used the Har’s fertilizer I got the same problem you did on many of my trees. Please don’t think I am badmouthing the fertilizer. I just probably misused it by applying too much to those trees at the wrong time without enough rain to stop it from causing burns. So your signs and symptoms of a problem will probably pass if you let Mother Nature get that tree back to neutral by flushing out the fertilizer as it continues to rain during our rainy season. Good luck. I know your frustration with this problem it’s a horrible to experience this big unknown. PS I just remembered that when I had your problem it occurred mostly on smaller trees than yours and I thought that perhaps the fertilizer had too much boron. But that was a wild guess. https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/boron-toxicity-symptoms.htm (https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/boron-toxicity-symptoms.htm)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 20, 2020, 04:26:16 PM
Sanpatel,
It may be an infection of Fusarium fungus which causes Mango Malformation disease;  if you cut it off, you did the right thing.  I hope you sanitized your clippers or saw, before doing any other cuts.

Mango Malformation typically makes a much tighter ball of buds, with no leaves developing;  that is why I am not sure that your tree has it. 

I saw one similar case, with less-narrow leaves, at a commercial mango grove in western Florida.  My fertilizer had never been there.

If Boron is at issue, it is deficiency, not excess.  Excess causes blackish brown marginal burns on leaves.  Deficiency causes tip die-back and buds that don't develop properly.  So this actually could be the problem.  The fertilizer manufacturer did change my customer-request-formulation, reducing all the micro-nutrients, including Boron.

Another possibility is volatilization of an herbicide being applied up-wind, even on another property, or weed-and-feed application anywhere within five times the radius of the mango's canopy.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: achetadomestica on July 20, 2020, 05:32:25 PM
I had a similiar problem last year and it was suggested it may need Zinc.
I sprayed with Southern Ag 2 weeks apart the suggested dosage for trees
that are deficient. This month the tree is flushing and looks much better

https://www.homedepot.com/p/Southern-Ag-1-pint-Citrus-Plant-Nutritional-Spray-100048939/100599817?mtc=&cm_mmc=---&msclkid=e129d324a4791aa4662d8c32a8b4bcff&gclid=CNe4wK3j3OoCFRbfDQodXS4G5A&gclsrc=ds (https://www.homedepot.com/p/Southern-Ag-1-pint-Citrus-Plant-Nutritional-Spray-100048939/100599817?mtc=&cm_mmc=---&msclkid=e129d324a4791aa4662d8c32a8b4bcff&gclid=CNe4wK3j3OoCFRbfDQodXS4G5A&gclsrc=ds)

I also have/use miracle grow and the Southern Ag has more Zinc
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mbmango on July 20, 2020, 08:36:47 PM
Latest flush was very chlorotic, although it has greened up a little
(https://i.postimg.cc/87Wp6kZb/IMG-2102.jpg) (https://postimg.cc/87Wp6kZb)

However, seeing yellowing in the previous flush, and older, throughout the leaves but more towards the tips
(https://i.postimg.cc/4KQXWLk7/IMG-2104.jpg) (https://postimg.cc/4KQXWLk7)

Had applied a thin (1") mulch a few months ago, mostly fine wood chips screened from bagged "bark" for other potting purposes, so I'm thinking I messed up the nutrient balance but I'm not familiar enough with mangos to guess at what might be wrong.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 20, 2020, 10:57:56 PM
mbmango,

Bacteria beginning to digest mulch, can consume any nitrogen available in the upper topsoil.  Give the tree some complete fertilizer, with 6-10 percent Nitrogen--- preferably mostly nitrate.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mbmango on July 20, 2020, 11:28:41 PM
Thanks Har!  Very much appreciated!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on July 21, 2020, 03:16:13 PM
My mallika just set fruit to 6 mangoes(about 2 inches long now). I have a question. Should I thin them or will all 6 grow to be medium sized mangoes. I would like good sized mangoes, not 6 tiny ones. So is it wise to thin or just leave them alone. Thanks
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 21, 2020, 05:57:21 PM
All on one pannicle?  What size tree?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on July 21, 2020, 11:12:15 PM
My mallika just set fruit to 6 mangoes(about 2 inches long now). I have a question. Should I thin them or will all 6 grow to be medium sized mangoes. I would like good sized mangoes, not 6 tiny ones. So is it wise to thin or just leave them alone. Thanks

In addition to the question abive, how big/old is the tree and what size pot is it in?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on July 22, 2020, 10:19:50 AM
My mallika just set fruit to 6 mangoes(about 2 inches long now). I have a question. Should I thin them or will all 6 grow to be medium sized mangoes. I would like good sized mangoes, not 6 tiny ones. So is it wise to thin or just leave them alone. Thanks

In addition to the question abive, how big/old is the tree and what size pot is it in?
Over 3 panicles. Tree went inground this spring as I am getting a big enough greenhouse for it. Tree is a little less than 6 feet and about 4 years old from nursery.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 22, 2020, 11:03:18 AM
Your tree should be able to handle those six Mallika fruits.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on July 22, 2020, 11:06:52 AM
Thanks :)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: zands on July 22, 2020, 11:15:26 AM
just want to say thanks to Guanabanus for my neighbor. He was talking about Dwarf Hawaiian,  how he wanted one and I never asked him why. Why bother. I told him to go to Truly Tropical in Delray for a grafted Dwarf Hawaiian. He headed up there with family in tow and got a dwarf Hawaiian and a Carrie tree too.  What great choices! He has Keitt too so is mango covered for long months.

Both are already planted so I looked at them. I  saw but did not inspect the Carrie tree but the graft on the Dwarf H was exquisite and probably done by Har/Gunabanus
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitGrower on July 22, 2020, 01:11:27 PM
I have an in ground Orange Sherbet tree (4 months from 7 gal) that is showing the same signs mentioned in post #1609. I know the recommendation in that case was to cut the tree below the damaged area but if I do that I will lose 3/4 of the tree as the damage is just above the first set of branches. Is there any way I can repair the tree or leave it alone in hopes that it grows fine, since it’s an otherwise beautiful and healthy tree, or am I risking problems down the line by going that route?
(https://i.postimg.cc/G4wqvpyv/2-A39018-B-0-C2-C-4-BEB-891-B-97-B87-D0-E0009.jpg) (https://postimg.cc/G4wqvpyv)

(https://i.postimg.cc/fkPHTCW2/33275-FFB-5059-4-C49-8988-6-C9239-C08721.jpg) (https://postimg.cc/fkPHTCW2)

(https://i.postimg.cc/bZxLgjxW/ACAA00-CD-CE7-D-463-E-824-A-CC0-D2-D8-DA94-F.jpg) (https://postimg.cc/bZxLgjxW)

(https://i.postimg.cc/svZTBWvV/F2-C72695-E0-D7-4839-941-E-991-C5-CB5-F5-A5.jpg) (https://postimg.cc/svZTBWvV)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: weiss613 on July 22, 2020, 03:40:52 PM
I had a similar mango tree problem 6 months ago. I came home one day and the Lemon M almost 3 y/o sized tree was laying on its side. I was pissed because I thought someone took a baseball bat and knocked it over. I looked where the impact was and could not find any. Then I saw why it went down. In Irma the tree was blown over and because the bark on the side the tree was leaning on separated bacteria etc were eating away more bark from underneath. So I started to remove the not attached bark until it was almost 3/4ths of the entire diameter. The most famous avocado expert on this TFF told me to leave it when I asked him if I should top it as high as I can but below the diseased part. I topped it and I'm glad I did because I have at least 10 branches coming out and it's exploding with growth. Your case looks way worse than mine with serious deep trunk damage so in my opinion do it because you'll be very happy when you see how fast it will recover unless it's rotten down the insides. Believe me with the rain and this high growth time within 3 weeks you will be soooo happy when you see the buds popping out and really taking off. I put a short video below of 4 Mango trees I had to do this to in the last 6 months and you will see exactly what I mean. These 4 mango trees I tried to nurse them back to health with various problems and then treatments for at least a year and they never got healthy so I just went ahead and topped them above their respective grafts as high as possible.
https://youtu.be/TLDtSCASWSg
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 22, 2020, 08:02:02 PM
Between that injury and the strap below it is a nice green, already swollen bud.  Cut the tree off about half-an-inch above that bud, without injuring the bud, and it will be fine.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitGrower on July 23, 2020, 02:49:59 AM
Thank you Weiss and Har for your your advice and encouragement.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bulldawg305 on July 28, 2020, 10:57:12 AM
Is spraying micronutrients in the summer recommended? I just saw that the product I am using has sulpher in it. Last year, my trees had a mystery leaf burn which looks like it may be attributed to this.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 28, 2020, 12:08:24 PM
Avoid most types of spraying in the heat of the day, or when bright sunlight is hitting the wet spray on the leaves.  And of course, measure ingredients carefully.  If, even so, damage occurred, then change the formula, such as by halving the dose.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bulldawg305 on July 28, 2020, 02:25:16 PM
Thanks Har. I have been only spraying late afternoons so I will try dilluting the formula next time.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitGrower on July 29, 2020, 09:58:20 PM
I planted a 7-gal Lemon Merengue tree last fall as a replacement for a sick Lemon Zest that I was never able to recover - in the same spot. The LM is showing the exact same issues as the LZ was before I pulled it. It’s in a row of trees that includes a healthy Kesar, M-4, and Fruit Punch, two of those just 10 feet away. They are growing in the same conditions and receiving the same treatment but this LM has just gone downhill since planted and has not improved with repeated applications of 8-3-9 fert, minors, cheated iron, or foliar sprays. For this reason, I am inclined to think this is some type of disease. Would it be possible that there was some kind of disease in the area left behind by the lemon zest that infected the lm? I would like to pull this tree out to see if I can nurse it back to health at my home (this tree is at my old house that I still take care of), what would be recommended to do that? More importantly, I would like to replace the tree with a different cultivar but I am concerned to plant something else in the area. Is there anything l should do to prevent issues with whatever I plant there?
(https://i.postimg.cc/bG3tfQLf/72-F94798-DF12-4-EF2-B48-A-D6-B9930-ECC11.jpg) (https://postimg.cc/bG3tfQLf)

(https://i.postimg.cc/N9n25BWN/9-A24-E82-D-8-C2-D-49-E0-BD11-C9-AE205356-E1.jpg) (https://postimg.cc/N9n25BWN)

(https://i.postimg.cc/Xr6FfNXm/9-DFE57-B1-4-A6-E-4-A78-928-E-28-AF151-C6-BE0.jpg) (https://postimg.cc/Xr6FfNXm)

(https://i.postimg.cc/LY5Z9n0Y/B8-A9-D415-1369-4-BB1-BADD-4-D301-F82413-E.jpg) (https://postimg.cc/LY5Z9n0Y)

(https://i.postimg.cc/nXKm08Dz/C4-F413-C1-F1-E0-4359-B19-F-8272-EC9-EEF10.jpg) (https://postimg.cc/nXKm08Dz)

(https://i.postimg.cc/McWQLs7Y/C5-B045-AD-62-A5-43-C4-A303-F2414-BD5303-D.jpg) (https://postimg.cc/McWQLs7Y)

(https://i.postimg.cc/LJjtwYrm/F8-B686-B7-B482-45-E2-82-DD-0-F33-C9446-FDA.jpg) (https://postimg.cc/LJjtwYrm)

PS. I did cut that diseased center branch just after taking these pics.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 30, 2020, 10:16:16 AM
Deficient in Zinc, Boron, Potassium....

Probably a root problem.

What is the soil like; and how was it planted?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitGrower on July 30, 2020, 10:50:57 AM
Thank you Har!! The soil is a 8-12 inch layer of mostly sand over a hard layer of limestone that I broke up in the planting area. I added all the minors you mentioned (Both granular and foliar) several times but I’m guessing if it’s a root problem then they all not being taken in by the tree. I will dig up the tree and take some more pics of everything this afternoon. Thanks again!!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: 599gh888 on July 30, 2020, 01:00:35 PM
@fruitgrower, I am not an expert with mango trees but for stone fruits, if you plant it in the same hole without removing the old dead roots and dirt, it will not thrive.  the main reason is due to the dead roots in and around the hole.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 30, 2020, 01:59:36 PM
FruitGrower, you could do frequent, heavy applications of granular Sulfur, such as Tiger-90.  This will lower the pH and release the tied-up nutrients.  It will also breakdown some Calcium Carbonate from the limestone and make Calcium Sulfate (Gypsum), which the plant will be able to use.

If you have already dug up the tree, you could replant it in a bottomless raised bed over the same spot, to give more root depth and better soil.  Avoid compost.  And don't bury the root crown.  Do cut circling roots.  Provide shade for recovery from transplanting.

Unless there is indication of diseased roots, non-hardwood dead roots are just providing organic matter in the soil;  they are unlikely to be an impediment.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tirandaz on July 30, 2020, 07:56:43 PM
These are Alphonso mangoes grown in Grant Fl.  The outward appearance is great however, the taste is very sour around the stone. These fruits were produced by 4 year old trees.  Any idea on what could be the cause?  Also, are there any known solutions to this? Thanks!




(https://i.postimg.cc/wyWFHb0G/IMG-5678-1.jpg) (https://postimg.cc/wyWFHb0G)

(https://i.postimg.cc/c6HXT0Jy/IMG-5679.jpg) (https://postimg.cc/c6HXT0Jy)

(https://i.postimg.cc/vDNXNk11/IMG-5680-2.jpg) (https://postimg.cc/vDNXNk11)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 30, 2020, 09:34:10 PM
That is Internal Breakdown.   It is from bad nutrition--- too much Nitrogen and not enough Calcium, and possibly not enough Boron.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bovine421 on July 30, 2020, 11:02:26 PM
Was this ppk die back?

planted Feb

(https://i.postimg.cc/bs6FrKXB/ppk.jpg) (https://postimg.cc/bs6FrKXB)

April (no fertilizer was applied)

(https://i.postimg.cc/5XLvTCmS/ppkk.jpg) (https://postimg.cc/5XLvTCmS)


(https://i.postimg.cc/9zsD2f08/ppkkk.jpg) (https://postimg.cc/9zsD2f08)

Now




(https://i.postimg.cc/NKX2kfm2/ppk2.jpg) (https://postimg.cc/NKX2kfm2)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bovine421 on July 30, 2020, 11:31:49 PM
This is much less likely to happen when multiple branching is not all from the same growth node.
Most first growth rings are like this one. Going to prune after second growth ring
(https://i.postimg.cc/HJxmjfkZ/ppkkkkk.jpg) (https://postimg.cc/HJxmjfkZ)
But a few first growth rings are like this. Should all multiple branch's except main vertical be pruned?

(https://i.postimg.cc/w748ZwVD/ppkkkk.jpg) (https://postimg.cc/w748ZwVD)
Elementary ? but i have to ask
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bulldawg305 on August 06, 2020, 08:26:57 PM
Is this Anthracnose? All new growth has black spots and dying. I am having to continually cut lower and lower. How effective is it to spray copper when it rains almost daily.

(https://i.postimg.cc/kD54kv1Y/20200806-170135.jpg) (https://postimg.cc/kD54kv1Y)

(https://i.postimg.cc/K1tvnqjj/20200806-170514.jpg) (https://postimg.cc/K1tvnqjj)

(https://i.postimg.cc/cKmxzvQN/20200806-170529-1.jpg) (https://postimg.cc/cKmxzvQN)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 06, 2020, 11:50:13 PM
Bovine,
Your second picture shows too many new branches--- very easy to fix right now.

Method One: Leave the straight up central leader untouched.  Leave only three new side branches, carefully breaking or cutting all the others, one at a time, so as not to injure the bark or damage the branches that you want to keep.  This method is less shocking to the plant and to you.  The plant will make a nice-looking plant sooner.  It will probably fruit sooner also.  On the down side, the canopy may get too dense sooner, and production will decrease, until corrective pruning is done.

Method Two:  Decapitate the tree!  Right under the top, tightly packed group of mature leaves, well under all that beautiful, tender,  new growth.
This could have been done before the new growth started to show.  When many leaf-axil buds burst into new branches, leave only three or four of them, in a symmetical descending zigzag.  As they grow, and are still limber, train them, if necessary to grow outward and upward, to form an open-middle "V" or "goblet.  When most of the leaves get at least a few minutes of hot, bright sunlight every day, the tree is more productive, and makes sweeter fruits--- as compared to when the tree needs to send glucose to shaded-out, parasitic leaves.  On the downside, this shock could kill the plant, by rootrot, when the under-fed roots are watered too much, or fertilized too much while there is not plenty of canopy to use that much fertilizer, or by an infection getting into the initial cut.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 07, 2020, 12:01:08 AM
Bulldawg,

Too much tipping / cutting off terminals.

Leave only one--to-three of the new branches in the last photo.  Visualize how the space right above them will be filled by new branches.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: evelin on August 07, 2020, 04:38:06 AM
Hey!
Can someone help me please?
My mango tree stopped growing. Tried to bring some new leaves a million times but it always felt down.
I don't know what should i do:(



(https://i.postimg.cc/5XMJcWym/mango-2.jpg) (https://postimg.cc/5XMJcWym)


(https://i.postimg.cc/7GJtYbQJ/mango1.jpg) (https://postimg.cc/7GJtYbQJ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bulldawg305 on August 07, 2020, 11:54:46 AM
Bulldawg,

Too much tipping / cutting off terminals.

Leave only one--to-three of the new branches in the last photo.  Visualize how the space right above them will be filled by new branches.

Har,

I plan on removing most of those branches but was waiting to see if any of the leaves grew out clean. Both trees have had 3 growth flushes that die off. Any recommendations for this?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Irakleousm on August 07, 2020, 01:51:01 PM
Received two mango trees from an Italian nursery (I live in Cyprus).
Is that gummosis?
I don't see any sap oozing, but the cracks are all over the place, on both of them.
I would appreciate any advice of how to treat them (or not, if there's no hope).
(can you see the pics? 'cause I cant)


(https://i.postimg.cc/4mmjKx4M/IMG-20200807-192517.jpg) (https://postimg.cc/4mmjKx4M)

(https://i.postimg.cc/c65bNG7c/IMG-20200806-073312.jpg) (https://postimg.cc/c65bNG7c)

(https://i.postimg.cc/4mmjKx4M/IMG-20200807-192517.jpg) (https://postimg.cc/4mmjKx4M)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 07, 2020, 02:20:19 PM
Irakle,
Spray with a Copper-containing product mixed with a micro-nutrient product.  Also apply gypsum (Calcium Sulfate) and a palm fertilizer on the soil.  Such cracks can heal up pretty fast.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Irakleousm on August 07, 2020, 02:51:31 PM
Irakle,
Spray with a Copper-containing product mixed with a micro-nutrient product.  Also apply gypsum (Calcium Sulfate) and a palm fertilizer on the soil.  Such cracks can heal up pretty fast.

Much appreciated feedback, thanks a lot.
Never seen those cracks in my mango plants, it was a bit of a shock to me.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 08, 2020, 01:01:59 PM
Evelin,
What kind of fertilizer have you put around your potted mango?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bovine421 on August 08, 2020, 01:32:15 PM
Bovine,
Your second picture shows too many new branches--- very easy to fix right now.

Method One: Leave the straight up central leader untouched.  Leave only three new side branches, carefully breaking or cutting all the others, one at a time, so as not to injure the bark or damage the branches that you want to keep.  This method is less shocking to the plant and to you.  The plant will make a nice-looking plant sooner.  It will probably fruit sooner also.  On the down side, the canopy may get too dense sooner, and production will decrease, until corrective pruning is done.

Method Two:  Decapitate the tree!  Right under the top, tightly packed group of mature leaves, well under all that beautiful, tender,  new growth.
This could have been done before the new growth started to show.  When many leaf-axil buds burst into new branches, leave only three or four of them, in a symmetical descending zigzag.  As they grow, and are still limber, train them, if necessary to grow outward and upward, to form an open-middle "V" or "goblet.  When most of the leaves get at least a few minutes of hot, bright sunlight every day, the tree is more productive, and makes sweeter fruits--- as compared to when the tree needs to send glucose to shaded-out, parasitic leaves.  On the downside, this shock could kill the plant, by rootrot, when the under-fed roots are watered too much, or fertilized too much while there is not plenty of canopy to use that much fertilizer, or by an infection getting into the initial cut.
Thanks I did not realize you answered my question. The first growth ring on the branch after the last pruning cut. I kept the main vertical and one side branch to the very outside but if I'm understanding retaining what you're saying in the future I could keep up to 3 side branches on the growth ring
Ps on another thread we had discussed Bonide ready to use copper fungicide I was concerned about with the rain that it would wash off but I found in a Q&A that they say there is no sticker Slicker needed and I find that is true my ice cream mango tree is very clean now. Thank you! You're a very valuable asset to this forum :)

The main vertical branch has reached about 18 inches in length from last pruning cut. I will wait a little longer and prune  under the second growth ring where leave are stagered
(https://i.postimg.cc/XBVWJFkR/20200805-184914.jpg) (https://postimg.cc/XBVWJFkR)

Ice Cream mango tree


(https://i.postimg.cc/18gQfyD3/20200807-182624.jpg) (https://postimg.cc/18gQfyD3)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on August 08, 2020, 02:02:59 PM
I used to be a proponent of tip pruning.  Since I planted out my house in 2017, and after seeing a friend's planting that I helped in selections,  I have done absolutely zero tip pruning.   Everything planted as 3 gal or small 7 gal (when 3s were not available), has great natural branching with more strength to the branches.  By their current shape and size,  I cant see where there would have had any benefit from tip pruning.

Pictures of trees available upon request, just let me kniw what variety...

Side note, trees with worst shape and most difficulty in shaping?  Those I brought with me that were tip pruned and in a 15 gal and 25 gal.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bovine421 on August 08, 2020, 03:13:41 PM
I used to be a proponent of tip pruning.  Since I planted out my house in 2017, and after seeing a friend's planting that I helped in selections,  I have done absolutely zero tip pruning.   Everything planted as 3 gal or small 7 gal (when 3s were not available), has great natural branching with more strength to the branches.  By their current shape and size,  I cant see where there would have had any benefit from tip pruning.

Pictures of trees available upon request, just let me kniw what variety...

Side note, trees with worst shape and most difficulty in shaping?  Those I brought with me that were tip pruned and in a 15 gal and 25 gal.
Thanks for bringing that up I think with my Julie and the ice cream I will let them just do their own thing
(https://i.postimg.cc/0r56NH2H/20200808-150503.jpg) (https://postimg.cc/0r56NH2H)

And thank you I have learned much from you much appreciated :)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bovine421 on August 08, 2020, 03:17:09 PM
Bovine,
Your second picture shows too many new branches--- very easy to fix right now.

Method One: Leave the straight up central leader untouched.  Leave only three new side branches, carefully breaking or cutting all the others, one at a time, so as not to injure the bark or damage the branches that you want to keep.  This method is less shocking to the plant and to you.  The plant will make a nice-looking plant sooner.  It will probably fruit sooner also.  On the down side, the canopy may get too dense sooner, and production will decrease, until corrective pruning is done.

Method Two:  Decapitate the tree!  Right under the top, tightly packed group of mature leaves, well under all that beautiful, tender,  new growth.
This could have been done before the new growth started to show.  When many leaf-axil buds burst into new branches, leave only three or four of them, in a symmetical descending zigzag.  As they grow, and are still limber, train them, if necessary to grow outward and upward, to form an open-middle "V" or "goblet.  When most of the leaves get at least a few minutes of hot, bright sunlight every day, the tree is more productive, and makes sweeter fruits--- as compared to when the tree needs to send glucose to shaded-out, parasitic leaves.  On the downside, this shock could kill the plant, by rootrot, when the under-fed roots are watered too much, or fertilized too much while there is not plenty of canopy to use that much fertilizer, or by an infection getting into the initial cut.
I think I may have done your second suggestion with the decapitation of my fruit punch tree
(https://i.postimg.cc/dhsNNFqj/20200715-192141.jpg) (https://postimg.cc/dhsNNFqj)

(https://i.postimg.cc/5jHm00tr/20200715-192213.jpg) (https://postimg.cc/5jHm00tr)

(https://i.postimg.cc/MvWgNV5B/20200808-150016.jpg) (https://postimg.cc/MvWgNV5B)

(https://i.postimg.cc/xJMPTpfd/20200808-150559.jpg) (https://postimg.cc/xJMPTpfd)




Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bovine421 on August 08, 2020, 03:31:15 PM
Was this ppk die back?

planted Feb

(https://i.postimg.cc/bs6FrKXB/ppk.jpg) (https://postimg.cc/bs6FrKXB)

April (no fertilizer was applied)

(https://i.postimg.cc/5XLvTCmS/ppkk.jpg) (https://postimg.cc/5XLvTCmS)


(https://i.postimg.cc/9zsD2f08/ppkkk.jpg) (https://postimg.cc/9zsD2f08)

Now




(https://i.postimg.cc/NKX2kfm2/ppk2.jpg) (https://postimg.cc/NKX2kfm2)
At first I thought maybe it was die back because i was kind of ill formed but in retrospect as I've gained knowledge i think instead it was more transplant shock. After watching Hars video on rootbound plants I made sure the roots where trimmed pruned and cut to my satisfication. I knew in my mind there is not nar 1 root that is pointed inward. That analogy of roots can't straighten themself back out like a worm resonated with my countryfied self
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: evelin on August 10, 2020, 07:12:47 AM
Evelin,
What kind of fertilizer have you put around your potted mango?

Guanabanus,
I mixed general soil with acid fertilizer, the pH level around 6,5-7.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pineislander on August 10, 2020, 07:51:22 AM
I planted a 7-gal Lemon Merengue tree last fall as a replacement for a sick Lemon Zest that I was never able to recover - in the same spot. The LM is showing the exact same issues as the LZ was before I pulled it. It’s in a row of trees that includes a healthy Kesar, M-4, and Fruit Punch, two of those just 10 feet away. They are growing in the same conditions and receiving the same treatment but this LM has just gone downhill since planted and has not improved with repeated applications of 8-3-9 fert, minors, cheated iron, or foliar sprays. For this reason, I am inclined to think this is some type of disease. Would it be possible that there was some kind of disease in the area left behind by the lemon zest that infected the lm? I would like to pull this tree out to see if I can nurse it back to health at my home (this tree is at my old house that I still take care of), what would be recommended to do that? More importantly, I would like to replace the tree with a different cultivar but I am concerned to plant something else in the area. Is there anything l should do to prevent issues with whatever I plant there?
(https://i.postimg.cc/bG3tfQLf/72-F94798-DF12-4-EF2-B48-A-D6-B9930-ECC11.jpg) (https://postimg.cc/bG3tfQLf)

(https://i.postimg.cc/N9n25BWN/9-A24-E82-D-8-C2-D-49-E0-BD11-C9-AE205356-E1.jpg) (https://postimg.cc/N9n25BWN)

(https://i.postimg.cc/Xr6FfNXm/9-DFE57-B1-4-A6-E-4-A78-928-E-28-AF151-C6-BE0.jpg) (https://postimg.cc/Xr6FfNXm)

(https://i.postimg.cc/LY5Z9n0Y/B8-A9-D415-1369-4-BB1-BADD-4-D301-F82413-E.jpg) (https://postimg.cc/LY5Z9n0Y)

(https://i.postimg.cc/nXKm08Dz/C4-F413-C1-F1-E0-4359-B19-F-8272-EC9-EEF10.jpg) (https://postimg.cc/nXKm08Dz)

(https://i.postimg.cc/McWQLs7Y/C5-B045-AD-62-A5-43-C4-A303-F2414-BD5303-D.jpg) (https://postimg.cc/McWQLs7Y)

(https://i.postimg.cc/LJjtwYrm/F8-B686-B7-B482-45-E2-82-DD-0-F33-C9446-FDA.jpg) (https://postimg.cc/LJjtwYrm)

PS. I did cut that diseased center branch just after taking these pics.
Some grass around your tree looks like it may have gotten herbicide or for some reason is yellowed, just a possibility.
Lots of house builders use a special mined compaction fill I think it is a byproduct of limerock mining. I am building and the builder specified 24 inches of fill that was also highly compacted with a huge vibratory roller, they tested and got near to 100%. I plan on completely removing the stuff where I intend to plant better trees. I have noticed other folks with problems close to a house foundation. Just a thought.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on August 10, 2020, 10:40:24 AM
I'm having an issue (or issues) with a few of my potted mango seedlings (all around one year old). The last growth flush was during that week or so of daily heavy afternoon rains here on the coast of SW FL a month or so ago. Several of my seedlings had fungal issues on the new growth. Others that did not have obvious fungal issues pushed leaves that were yellow and/or had ripples in the leaf surface. Other seedlings in the exact same soil/containers/location pushed healthy new growth without issue, so I put it off on fungus. Unfortunately the latest flush finds those seedlings that had issues still having problems. Here are photos of what I'm seeing:


(https://i.postimg.cc/QK5M8XK9/WIN-20200810-09-59-10-Pro.jpg) (https://postimg.cc/QK5M8XK9)
Mustard-yellow leaves with small amounts of green

(https://i.postimg.cc/7f86BTjg/WIN-20200810-09-59-22-Pro.jpg) (https://postimg.cc/7f86BTjg)
Green leaves with very large ripples across the leaf surface, new flush looks pretty healthy so far

(https://i.postimg.cc/NLrF7xCs/WIN-20200810-09-59-31-Pro.jpg) (https://postimg.cc/NLrF7xCs)
Pineapple Pleasure with 3 issues: very washed-out yellow leaves, rippling, and what looks like fungus damage

(https://i.postimg.cc/jLHjBSrB/WIN-20200810-09-59-47-Pro.jpg) (https://postimg.cc/jLHjBSrB)
Ice Cream on the right with washed-out leaves and rippling

(https://i.postimg.cc/SnmK4bSR/WIN-20200810-09-59-57-Pro.jpg) (https://postimg.cc/SnmK4bSR)
Alphonso seedling with little rippling, but no green in the current or last flush

I mixed a little less than a tablespoon of Osmocote Plus into each container back in February and I've been giving all a dose of 5-1-1 fish fertilizer each month or so. Anybody know what I'm dealing with here?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 10, 2020, 06:07:51 PM
JakeFruit,

Rippling is an identifying characteristic of many mango varieties.  Some mango varieties, such as Keitt, have flat leaves.

I see multiple mineral deficiencies, probably including Iron, Sulfur, Calcium, and Copper.  Try adding gypsum and a mix of chelated micro-nutrients.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitGrower on August 11, 2020, 12:37:14 AM
Thank you Har and pineislander for your help.

Har, you actually came to do a consultation at my place a couple of years ago and did recommend tiger 90 at that time. I think I may not have been using enough (a handful for each tree, twice a year), so I will increase the frequency and amount applied. I have already done one heavy application the week after you recommended but haven’t noticed any improvement yet.

Pineislander, that area on the side of my house was used for storage before I got into this hobby so I had removed the soil there and filled it with sand covered by cypress mulch, which is mostly decomposed but you see a little bit is left. Here is a pic of it.
(https://i.postimg.cc/ctrqQcRv/6-B793-C47-FC81-4-B60-83-D1-7737-D3-B338-D9.jpg) (https://postimg.cc/ctrqQcRv)
The grass is grass that grew over from the neighbors side and is dead because I had covered it with cardboard to kill it in the area near the trunk. I will be sure to keep an eye on the roots and the foundation, thanks.

The
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on August 11, 2020, 07:21:05 AM
JakeFruit,

Rippling is an identifying characteristic of many mango varieties.  Some mango varieties, such as Keitt, have flat leaves.

I see multiple mineral deficiencies, probably including Iron, Sulfur, Calcium, and Copper.  Try adding gypsum and a mix of chelated micro-nutrients.
Thanks Har. All these seedlings (Pineapple Pleasure, Ice Cream, Alphonso) had typical-looking leaves before this problem arose, but I'm sure you are right about the nutrient deficiency being the problem. I still have another year or so before I have their final in-ground planting spots figured out. Do you have a recommendation for a time-released fertilizer that works well for potted mangoes?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on August 11, 2020, 08:00:14 AM
JakeFruit,

Rippling is an identifying characteristic of many mango varieties.  Some mango varieties, such as Keitt, have flat leaves.

I see multiple mineral deficiencies, probably including Iron, Sulfur, Calcium, and Copper.  Try adding gypsum and a mix of chelated micro-nutrients.
Thanks Har. All these seedlings (Pineapple Pleasure, Ice Cream, Alphonso) had typical-looking leaves before this problem arose, but I'm sure you are right about the nutrient deficiency being the problem. I still have another year or so before I have their final in-ground planting spots figured out. Do you have a recommendation for a time-released fertilizer that works well for potted mangoes?

There is at least one thread about what osmocote is best to use.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 11, 2020, 12:07:35 PM
For potted plants, a fully coated, slow-release fertilizer is better than quick release.  Among those, Calibercote and Nutricote and a couple of others, tend to be more expensive, and better too, than Osmocote.

With careful, sparing, monthly use, an inexpensive quick-release fruit-tree fertilizer, such as the Rare Fruit Council's 8-3-16, or Excalibur's 8-3-9, work quite well in containers.

Palm fertilizers work well for most fruit trees in the ground, but often harm potted plants.  I use Helena 8-2-12 a lot around trees in the ground, but I have hurt potted ones with it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 11, 2020, 12:19:13 PM
Fruit Grower,
Spread Tiger-90 on the entire area of ground within twice the radius of the canopy, with enough so that the granules are practically touching each other, for the initial corrective dose.

For maintenance, spread 1-3 times as much Tiger-90 as you do fertilizer.

Results will probably not be apparent for a couple of months.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: canesgirl821 on August 11, 2020, 12:36:37 PM
Fruit Grower,
Spread Tiger-90 on the entire area of ground within twice the radius of the canopy, with enough so that the granules are practically touching each other, for the initial corrective dose.

For maintenance, spread 1-3 times as much Tiger-90 as you do fertilizer.

Results will probably not be apparent for a couple of months.

Har, You gave me similar advice a few months back, just a follow up question. How often would you suggest reapplying the Tiger 90 as follow up/maintenance after the initial dose?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 11, 2020, 01:05:33 PM
As often as you use a fertilizer.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitGrower on August 11, 2020, 01:45:25 PM
Fruit Grower,
Spread Tiger-90 on the entire area of ground within twice the radius of the canopy, with enough so that the granules are practically touching each other, for the initial corrective dose.

For maintenance, spread 1-3 times as much Tiger-90 as you do fertilizer.

Results will probably not be apparent for a couple of months.

Thank you!!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on August 11, 2020, 06:12:58 PM
Here's what I found at the local Big Earth Supply for $30 per 50lb bag. They made the mix specifically for the local Rare Fruit Council, it says it feeds for up to 3 months. What it doesn't say on the bag is the application rate for a potted tree. Any guesses on what would be a safe application rate based on pot or trunk diameter?
(https://i.postimg.cc/fJRSskYt/WIN-20200811-17-45-47-Pro.jpg) (https://postimg.cc/fJRSskYt)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 11, 2020, 10:40:40 PM
A monthly application on a small mango in a 3-gal. pot: one level teaspoon, well spread over most of the soil surface, but not touching the trunk.  Rounded up teasppon if the plant is over 2 feet tall.

For mangos, that mix is a bit heavy on ammonium and urea.  If the leaf wax starts to look as though it has melted and run down a couple of millimeters, look for a different fertilizer.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tirandaz on August 11, 2020, 11:24:46 PM
That is Internal Breakdown.   It is from bad nutrition--- too much Nitrogen and not enough Calcium, and possibly not enough Boron.

Thank you , is it ok for me to put lime around the trees , if so how much per tree , what should I  add to supplement Boron ? The trees are 4 yrs old 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on August 12, 2020, 08:37:28 AM
A monthly application on a small mango in a 3-gal. pot: one level teaspoon, well spread over most of the soil surface, but not touching the trunk.  Rounded up teasppon if the plant is over 2 feet tall.

For mangos, that mix is a bit heavy on ammonium and urea.  If the leaf wax starts to look as though it has melted and run down a couple of millimeters, look for a different fertilizer.
Thanks again Har!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on August 12, 2020, 09:20:52 AM
Keep in mind when fertilizing potted plants with any type of fertilizer,  the amount of watering and/or rain will have an impact on effectiveness and life of the fertilizer.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 12, 2020, 09:28:54 AM
Tirandaz,
Use Gypsum, Calcium Sulfate.  Unlike lime, gypsum doesn't raise the pH;  raising pH tends to tie-up many nutrients.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on August 12, 2020, 10:25:57 AM
Keep in mind when fertilizing potted plants with any type of fertilizer,  the amount of watering and/or rain will have an impact on effectiveness and life of the fertilizer.
If we aren't getting any rain, I aim to give them a 15 minute soak from my well irrigation every 3 to 4 days this time of year (crazy hot and humid), I back off to watering once a week when we cool off. Does that sound about right? Would you fertilize monthly year round with the same amounts each time or back off in the winter? 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tirandaz on August 12, 2020, 12:33:59 PM
Tirandaz,
Use Gypsum, Calcium Sulfate.  Unlike lime, gypsum doesn't raise the pH;  raising pH tends to tie-up many nutrients.

Thank you Har  ,  someone at the nursery had recommended   oyster shells what  are thoughts about that ?
How do I supplement Boron ?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 12, 2020, 02:35:23 PM
Whole oyster shells would not be helpful.

For Boron, one usually uses a mixed granular fertilizer, or a micro-nutrient mix, which contains Boron.  Read the labels.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tirandaz on August 12, 2020, 10:32:36 PM
Whole oyster shells would not be helpful.

For Boron, one usually uses a mixed granular fertilizer, or a micro-nutrient mix, which contains Boron.  Read the labels.

Can I use washed crushed regular sea shells?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Oolie on August 13, 2020, 02:19:43 AM
Whole oyster shells would not be helpful.

For Boron, one usually uses a mixed granular fertilizer, or a micro-nutrient mix, which contains Boron.  Read the labels.

Can I use washed crushed regular sea shells?

Similar to oyster shell you'd be adding Calcium Carbonate. The pH would rise from this addition compounding micronutrient lockup.

For a resolution, gypsum is the cheapest, most available option.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tirandaz on August 13, 2020, 12:09:17 PM
Whole oyster shells would not be helpful.

For Boron, one usually uses a mixed granular fertilizer, or a micro-nutrient mix, which contains Boron.  Read the labels.

Can I use washed crushed regular sea shells?
Thanks
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tirandaz on August 16, 2020, 07:32:21 PM
Tirandaz,
Use Gypsum, Calcium Sulfate.  Unlike lime, gypsum doesn't raise the pH;  raising pH tends to tie-up many nutrients.

Thank you Har  ,  someone at the nursery had recommended   oyster shells what  are thoughts about that ?
How do I supplement Boron ?
How much Gypsum should I apply around each tree which are 4 yrs old?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Oolie on August 16, 2020, 11:31:44 PM
Go nuts.

The application ratio of gypsum is hard to exceed.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on August 17, 2020, 12:46:06 PM

(https://i.postimg.cc/1n6gXbsB/20200816-133438.jpg) (https://postimg.cc/1n6gXbsB)

(https://i.postimg.cc/6Tr2XsH5/20200816-133449.jpg) (https://postimg.cc/6Tr2XsH5)

So when do I pick this mallika mango?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: achetadomestica on August 17, 2020, 02:23:36 PM
For me this year the my first 2 Malikas turned yellow on the tree and I picked
them and they were very sweet. I watched a youtube video and it said to pick them
green when the shoulders are full and wrap in newspaper. I tried this on 5 or 6
and they turned yellow in around a week and they were very sweet also.
I also ate one still green and a little firmer then when they were yellow and
it was a little tangy and sweet. I ended up with around 20 this year and most
of them I ate yellow and they were sweet. I need more practice but it looks like
the mango in the picture has full shoulders and will ripen nicely in newspaper.
My malikas started getting ripe at the beginning of June and I was done before July.
Is it your only fruit?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on August 17, 2020, 02:49:22 PM
Yes, correct, the shoulders should fill out.  Also keep an eye on the stem, it should turn brown where it connects to the mango (its still very green).  It can be picked from mature green and ripened it a warm location (not an air conditioned room) or at first yellow color break.

The taste should be very sweet with the orange creamsicle flavor profile  (with similarities to LZ but a prefect Mallika can be better than a LZ in my opinion).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on August 17, 2020, 02:54:31 PM
For me this year the my first 2 Malikas turned yellow on the tree and I picked
them and they were very sweet. I watched a youtube video and it said to pick them
green when the shoulders are full and wrap in newspaper. I tried this on 5 or 6
and they turned yellow in around a week and they were very sweet also.
I also ate one still green and a little firmer then when they were yellow and
it was a little tangy and sweet. I ended up with around 20 this year and most
of them I ate yellow and they were sweet. I need more practice but it looks like
the mango in the picture has full shoulders and will ripen nicely in newspaper.
My malikas started getting ripe at the beginning of June and I was done before July.
Is it your only fruit?
I have 4 more on the tree but they are smaller and dont look ready.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 17, 2020, 03:28:47 PM
This thread is about disease and plant-nutrition problems, not about variety flavors and harvesting times.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tirandaz on August 17, 2020, 09:39:30 PM
Go nuts.

The application ratio of gypsum is hard to exceed/quote]
So just to clarify, 2-3 lbs of gypsum around these trees will not hurt
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Oolie on August 17, 2020, 09:49:09 PM
Not likely. I say go for it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 18, 2020, 02:36:13 PM
Spread widely, from near the trunk, out to twice the length of the longest side branch.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: ammoun on August 24, 2020, 04:27:12 PM
(https://i.postimg.cc/3dHzGy9g/IMG-3792.jpg) (https://postimg.cc/3dHzGy9g)


Besides the leaf tip salt burn, are the dark spots on the top set anthracnose? (This is an old image)

Could flies increase anthracnose? I notice them very often hanging on mango leaves.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 24, 2020, 10:16:09 PM
Ammoun,

The top leaves' burn looks like excessive Boron.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: ammoun on August 25, 2020, 02:58:08 PM
Thank you Har.

It just seems to me that Boron toxicity spots would be more evenly distributed on the leaf, don't you think?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: UplanderCA on August 25, 2020, 06:53:11 PM
Hello,
I have a cocktail mango tree with several grafts pushing new growth (3 & 4 growth flush).  I have one graft (Mahachanok) where the growth is mottled looking.  The other grafts are growing normally.  I don't believe it's a fertilizer issue or all of the other new growth would be affected.  It looks like an infection of some sort.  Attached are photos of the affected growth.  I just notice that the third photo on a different MC branch includes an insect (small grasshopper?).  I'm not aware that grasshoppers are a pest on Mango trees.
Only the MC new growth is affected.  The orange sherbet, lemon zest, NDM, and Carrie new growth doesn't have the leaf issue.   Should I cut out the affected new growth?

Note: the graft is about 8 ft. high.  No chemicals were used or sprayed in the area.  However, about a 8 weeks ago, I painted the trunk with white tree trunk paint (Arizona's Best). I typically lightly spray and wash down the entire tree once a week after the sun sets to remove the spider webs and dust from the leaves.

Maha discolored leaves
(https://i.postimg.cc/4YXr3gXC/MCP1.jpg) (https://postimg.cc/4YXr3gXC)

Close-up of Maha leaves (orange sherbet graft next to Maha with normal growth)
(https://i.postimg.cc/6Tc9LYTN/MCP2.jpg) (https://postimg.cc/6Tc9LYTN)

Different Maha branch with insect
(https://i.postimg.cc/fJkh7s6x/MCP3.jpg) (https://postimg.cc/fJkh7s6x)


Tony
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 25, 2020, 07:21:56 PM
Uplander,
That may be Powdery Mildew, but that is unusual in the heat of Summer.  Maybe it is another fungus.

The interveinal blackening looks like severe Potassium deficiency, but that probably would not distort the leaves like that. 

Hopefully someone else will know.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: UplanderCA on August 25, 2020, 08:10:04 PM
Har,

Thank-you for the reply.   I only see powdery mildew in the winter time on the NDM mango tree and the roses.  The last three weeks had high day-time temperatures 89-105, evening temperatures 68-78.  Full Sun, no rain, little to no humidity, and a dusting of ash from the wildfires.  My last application of fertilizer was July 18 with Ironite Plus 12-10-10 with secondary and micro-nutrients.  I have a 2" layer of mulch of pine and oak from a tree trimming outfit.  I deep water once a week.
All my mango trees are loving the high temperatures as there has been constant growth flushes the past month.   My concern is that I haven't seen the strange discoloration before and it doesn't look healthy.  I'm keeping a close watch on this.  Any additional information and help is greatly appreciated.

Tony
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tirandaz on August 25, 2020, 08:31:31 PM
Spread widely, from near the trunk, out to twice the length of the longest side branch.
( 1 inch

Thanks for your suggestions
What can I use as a sealant after prunnig 1 inch or more thicker branches and after Bark grafting.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 25, 2020, 09:56:30 PM
Tirandaz,
We don't normally recommend sealing pruning cuts in Florida climate.  I am not sure about it in desert climates.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 25, 2020, 10:00:18 PM
UplanderCA,

Low 70's F. at night is cool enough for Powdery Mildew to activate, if there is some available humidity on leaf surfaces.  Have you had any dew?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tirandaz on August 25, 2020, 10:33:33 PM
Tirandaz,
We don't normally recommend sealing pruning cuts in Florida climate.  I am not sure about it in desert climates.
Thanks, but what about sealing after Bark grafting?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on August 28, 2020, 08:59:36 AM
Thanks, but what about sealing after Bark grafting?

Parafilm or buddy tape work great.

Never seal pruning cuts.

PM does not flourish when temps are 90+.

Your leaves suggest some kind of virus.  Best all around copper pentahydrate system spray is Magnabon CS2005.  2 tsp/gallon.  DO NOT forget to add a non ionic surfactant.

Good luck...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: UplanderCA on August 28, 2020, 06:27:04 PM
UplanderCA,

Low 70's F. at night is cool enough for Powdery Mildew to activate, if there is some available humidity on leaf surfaces.  Have you had any dew?

Har,
No dew forming that I'm aware of...very little humidity. (almost the same environment as Palm Springs except 10-20 degrees cooler).  Most of the leaves have dropped - see photo.
(https://i.postimg.cc/DWthdsbH/update-leaves.jpg) (https://postimg.cc/DWthdsbH)

A 3rd branch from the Maha scion also has some of the same symptom...not as severe
(https://i.postimg.cc/KRXNSYnb/3rd-branch.jpg) (https://postimg.cc/KRXNSYnb)

Mark,
Thank-you for the info on Magnabon CS2005.  Would Jet-Dry work as the non-ionic surfactant?

Tony
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: UplanderCA on August 28, 2020, 06:47:41 PM
Hello Again,

I have been paying close attention to my mango trees because of potential fungal / virus infection responses to my previous posts.  I have two photos and I'm wondering if the trees have nutritional issues. 
The majority look like the following photo or are a much darker shade of green (which I consider normal and healthy).
(https://i.postimg.cc/ygGDRnmR/Normal.jpg) (https://postimg.cc/ygGDRnmR)


I have seen a few leaves of the newer (growth 3-4 weeks) with the following mottled coloration.
(https://i.postimg.cc/ZWf40nFB/Motteled.jpg) (https://postimg.cc/ZWf40nFB)
Is this coloration and pattern normal? 

Thanks in advance for any info and help.

Tony
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 28, 2020, 09:52:42 PM
UplanderCA,
Looks like Manganese and Potassium deficiencies.

What have you fertilized with lately?  And what is your soils' pH?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mango Stein on August 29, 2020, 04:58:15 AM
My Kwan mango gets powdery mildew every year. I have thought about using mancozeb, but it is quite toxic. Also, the product labels never mention treating mango and when I asked the manufacturer they said they don't know.

I have since read that home remedies are quite effective: 60% milk solution or bicarbonate solution or vinegar solution. Anyone have success with these? I also read neem oil works on powdery mildew, however it is not supposed to be sprayed on flowers. But that is exactly where powdery mildew starts in mangoes...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 29, 2020, 11:12:51 AM
Food-grade Potassium Bicarbonate leavening works.  It is better for the trees than Baking Soda (Sodium Bicarbonate).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mango Stein on August 29, 2020, 12:55:15 PM
Thanks Guanabanus. Do I have to spray the foliage too? Because the Kwan's leaves seem to be completely unaffected by powdery mildew... though I am not sure if they can still covertly harbor the fungus that then ravage the flowers.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: UplanderCA on August 29, 2020, 03:37:09 PM
UplanderCA,
Looks like Manganese and Potassium deficiencies.

What have you fertilized with lately?  And what is your soils' pH?

Har,

Using a Luster Leaf Rapidtest Digital Soil pH meter (model 1845), I get an average reading of 6.6 pH reading.  I took 9 sample readings at various distances from the trunk 1 ft, 3 ft. and 6 ft.  Lowest reading was 6.4, Highest was 6.7.  The last time any type was applied was in in early July.  Ironite plus 12-10-10, plus essential micro-nutrients.

Tony
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 30, 2020, 12:18:08 PM
Uplander,

That all sounds good.

Sometimes, the deficiency in the leaves is simply caused by a temporary condition that reduces the efficiency of the roots, right while some new growth is expanding---  most commonly from the topsoil's having gotten too dry for a couple of days, which kills off hair-roots.  If the soil gets waterlogged for days, or gets too cold or too hot, the hair-roots are also impacted.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on August 30, 2020, 06:12:50 PM
Uplander,

That all sounds good.

Sometimes, the deficiency in the leaves is simply caused by a temporary condition that reduces the efficiency of the roots, right while some new growth is expanding---  most commonly from the topsoil's having gotten too dry for a couple of days, which kills off hair-roots.  If the soil gets waterlogged for days, or gets too cold or too hot, the hair-roots are also impacted.

It's "root hars", not hair-roots, har ;D
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tirandaz on August 30, 2020, 11:16:16 PM

(https://i.postimg.cc/0MyFXmk6/leaf-eating-pest.jpg) (https://postimg.cc/0MyFXmk6)

(https://i.postimg.cc/0bw349sC/flying-leaf-mango-leaf-eating-pest.jpg) (https://postimg.cc/0bw349sC)
 Hi
these are white winged beetle like insects  possibly eating mango  and lyche leaves  does anybody know what they are and how can they be treated ,How damaging are they to the tree
THank You
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 30, 2020, 11:30:37 PM
Sri Lankan weevil,

Only important when trees are small, such as under 5-feet tall.  Smash them.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on August 31, 2020, 07:18:33 PM

(https://i.postimg.cc/DWzK4tJN/20200831-163306.jpg) (https://postimg.cc/DWzK4tJN)

(https://i.postimg.cc/Q99G01qk/20200831-163320.jpg) (https://postimg.cc/Q99G01qk)

Is this normal? Fruit punch mango has "veins" on the new flush. Should I be worried? Thanks.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tirandaz on August 31, 2020, 10:12:17 PM

(https://i.postimg.cc/DWzK4tJN/20200831-163306.jpg) (https://postimg.cc/DWzK4tJN)

(https://i.postimg.cc/Q99G01qk/20200831-163320.jpg) (https://postimg.cc/Q99G01qk)

Is this normal? Fruit punch mango has "veins" on the new flush. Should I be worried? Thanks.
thanks
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 31, 2020, 11:58:38 PM
It does look a bit crinkley and bulgey.  Please show it to us again when the leaves harden up.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mango Stein on September 01, 2020, 05:06:01 AM

(https://i.postimg.cc/DWb2WGDm/20200901-165447-1.jpg) (https://postimg.cc/DWb2WGDm)

Hey 'Banus, what do you think the leaves here are suffering from? Not many on the tree, but here and there.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 01, 2020, 10:42:38 AM
Old spray burn.
Title: Re: Mango Pests, Diseases, and Nutritional Problems CC crack / split
Post by: Danielofthecastle on September 03, 2020, 09:42:43 AM
Hello All, have a Coconut Cream in 25 gallon pot, grown outside on concrete patio( in 25g pot stands about 8 ft tall). Soil: Peat moss, pearlite, local soil (Palm Beach Gardens) . I started noticing these black cracks or slots in the branches. Looks like a combo of Canker and Gummosis !?!? Early August I cut back branches to increase circulation and decrease bacterial/ fungal pressures. Besides copper fungicide every week for 6-10 weeks is there any advantageous adjuvant ( short of pugging the tree... if I must, so be it). The lowest non-affected portion is about 2 inches below the main crotch (branching point) of the tree.
(https://i.postimg.cc/CBvLQ0p0/14-FB5-AC2-0-D3-D-4140-9380-A40-B6-B43-FF7-B.jpg) (https://postimg.cc/CBvLQ0p0)

(https://i.postimg.cc/gnj6dMg4/44134-F3-E-91-AA-44-A7-8740-CA04-BFA265-B5.jpg) (https://postimg.cc/gnj6dMg4)

(https://i.postimg.cc/p9JdK80p/5-A6-BEA03-B80-E-4119-ABBF-28443-F0-F11-E4.jpg) (https://postimg.cc/p9JdK80p)

(https://i.postimg.cc/G4Yth6GP/5-E2-AB602-E1-FF-4-CED-9-A23-E03-C127-B0724.jpg) (https://postimg.cc/G4Yth6GP)

(https://i.postimg.cc/McSTctmC/7-B393-F55-9-C3-A-4-F2-C-B6-E9-7-C57-D7388-FAF.jpg) (https://postimg.cc/McSTctmC)

(https://i.postimg.cc/1nR3BtTM/9-BF82-E7-F-C7-C2-4-D98-A582-CDDCD43693-CD.jpg) (https://postimg.cc/1nR3BtTM)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 03, 2020, 11:11:33 AM
Either Pentra-Bark or Kinetic are good adjuvants to increase penetration.  Many other products are, presumably, just as good.
About 1/4 teaspoon per gallon.  1/2 teaspoon probably O.K.  [Higher rates of adjuvants often cause harm.]

Adding a multi micro-nutrient product, such as chelates or seaweed extract, could also be useful.  And use gypsum on the soil when you fertilize, to keep a good balance of nutrients.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Danielofthecastle on September 03, 2020, 01:50:33 PM
Thank You for your timely response Har!!

Would you cut off branches with black cuts/ pugg under lowest lesion? My concern being that it has penetrated the tree and potentially rot in the future...then back to square one?


Where is the best (price) place to purchase such said products (i.e., adjuvants, micro-nutrients, chelates, gypsum (in Palm Beach County?))? I have used Diamond Fertilizer (too far), and/or Big Box stores?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 04, 2020, 04:49:51 AM
Don't cut off any more, and one of those is just old sunburn on the green branch.

Try the internet.  Try Landscape Site One.  Or Universal Grower's Supply in Pompano.  Also Truly Tropical has Gypsum.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: keri_guy on September 05, 2020, 12:12:07 AM
Can someone help me as to why my mango leaves are pale green? Does it need more fertilizer or does it have some type of disease.
(https://i.postimg.cc/zLBmt9b3/20200729-183707.jpg) (https://postimg.cc/zLBmt9b3)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Danielofthecastle on September 05, 2020, 12:28:20 AM
Nothing is wrong, it’s just new growth. It will darken up as it matures, no worries.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: ibliz on September 05, 2020, 09:03:23 AM
UplanderCA,

Low 70's F. at night is cool enough for Powdery Mildew to activate, if there is some available humidity on leaf surfaces.  Have you had any dew?

Har,
No dew forming that I'm aware of...very little humidity. (almost the same environment as Palm Springs except 10-20 degrees cooler).  Most of the leaves have dropped - see photo.
(https://i.postimg.cc/DWthdsbH/update-leaves.jpg) (https://postimg.cc/DWthdsbH)

A 3rd branch from the Maha scion also has some of the same symptom...not as severe
(https://i.postimg.cc/KRXNSYnb/3rd-branch.jpg) (https://postimg.cc/KRXNSYnb)

Mark,
Thank-you for the info on Magnabon CS2005.  Would Jet-Dry work as the non-ionic surfactant?

Tony

Hi Uplander,

I had experienced the same leaves distortion and necrosis back in 2015. Back then i recorded it as unknown disorder.

(https://i.postimg.cc/HrX0kSh6/Unknown-Disorder.jpg) (https://postimg.cc/HrX0kSh6)


But now I am quite convinced it was mango scab. Easily fixed by copper
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 05, 2020, 12:59:12 PM
Ibliz,

Interesting that Copper resolved that.

It looks like Zinc deficiency.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: UplanderCA on September 06, 2020, 04:29:10 PM
UplanderCA,

Low 70's F. at night is cool enough for Powdery Mildew to activate, if there is some available humidity on leaf surfaces.  Have you had any dew?

Har,
No dew forming that I'm aware of...very little humidity. (almost the same environment as Palm Springs except 10-20 degrees cooler).  Most of the leaves have dropped - see photo.
(https://i.postimg.cc/DWthdsbH/update-leaves.jpg) (https://postimg.cc/DWthdsbH)

A 3rd branch from the Maha scion also has some of the same symptom...not as severe
(https://i.postimg.cc/KRXNSYnb/3rd-branch.jpg) (https://postimg.cc/KRXNSYnb)

Mark,
Thank-you for the info on Magnabon CS2005.  Would Jet-Dry work as the non-ionic surfactant?

Tony

Hi Uplander,

I had experienced the same leaves distortion and necrosis back in 2015. Back then i recorded it as unknown disorder.

(https://i.postimg.cc/HrX0kSh6/Unknown-Disorder.jpg) (https://postimg.cc/HrX0kSh6)


But now I am quite convinced it was mango scab. Easily fixed by copper

Hi ibliz,

Thank-you for the reply.  I'm not sure what was the cause for the strange growth and discoloration of the leaves.  However, I do suspect an insect infestation of some sort...possibly some newly hatched grasshoppers that feasted on the tender new growth.  I have found grasshoppers next to new growth missing sections of leaves.  I also saw a previous post by Skahm and Cookie Monster on April 23, 2016 with the exact same strange growth and discoloration on new growth due to insect infestation.  I believe that Sevin was applied to new growth and appeared to correct the situation.   I haven't applied any insecticide at this point as the affected leaves have dropped and the new growth appears to be normal.

Tony
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: TheFlyingFarmer on September 09, 2020, 11:07:46 AM
just bought a 7 gal cogshall and was wondering if any of this looks normal to you guys.




(https://i.postimg.cc/NLk4CJvg/20200908-174724.jpg) (https://postimg.cc/NLk4CJvg)

(https://i.postimg.cc/RNZGykmM/leaf-curl-2.jpg) (https://postimg.cc/RNZGykmM)

(https://i.postimg.cc/N5CbcdGR/cogshall.jpg) (https://postimg.cc/N5CbcdGR)

(https://i.postimg.cc/CRWNZdq1/mold-1.jpg) (https://postimg.cc/CRWNZdq1)

(https://i.postimg.cc/G8jJSQS8/trunk-1.jpg) (https://postimg.cc/G8jJSQS8)

(https://i.postimg.cc/y3YXqZwf/mold-2.jpg) (https://postimg.cc/y3YXqZwf)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 09, 2020, 07:23:54 PM
Fifth picture looks like old sunburn, when plant was tipped over.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitGrower on September 12, 2020, 01:35:31 AM

(https://i.postimg.cc/t7q1MYpk/2-E8-F612-A-3-FC8-4520-A5-AF-FB90-AEAD7089.jpg) (https://postimg.cc/t7q1MYpk)

(https://i.postimg.cc/hzrXGqbV/4-FD00683-8-D91-4-CDF-9-BC4-91-A594-E4-F28-D.jpg) (https://postimg.cc/hzrXGqbV)

(https://i.postimg.cc/nXj9Ggpt/619-ADDE8-89-A8-4-DEC-9860-0-A2482-B22-F9-B.jpg) (https://postimg.cc/nXj9Ggpt)

(https://i.postimg.cc/JDmymhJ1/69-F9-B435-00-CB-45-EB-B537-C986-BC4745-AF.jpg) (https://postimg.cc/JDmymhJ1)

(https://i.postimg.cc/7JZfGQmd/E66327-EB-5044-4430-9636-1-C88-A6874087.jpg) (https://postimg.cc/7JZfGQmd)

I noticed some of the leaves on my Mahachanok were growing deformed. It’s only a few branches on an otherwise healthy looking tree. I have never seen this before, has anyone else?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 12, 2020, 10:40:40 AM
At an earlier, more tender stage of new growth, there may have been some insects on it, such as aphids or potato leaf-hoppers.  Or heat stress?

While the leaves are still partially tender, is a good time to apply nutritional sprays.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitGrower on September 12, 2020, 05:54:59 PM
Thank you Har!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Honest Abe on September 12, 2020, 09:01:47 PM
Hi,
I have these same spots on my tiny Pickering, and my young Keitt. There aren’t many but they seem to be increasing slowly with rainy season. The neighbors’ Haden is infested with these spots, but the fruit was clean. I should mention I burned the Pickering with osmocote plus last year.
My house is in north Miami area. 4 miles west of ocean 2 miles west of Biscayne Bay. Sandy soil.
Thank you


Keitt:
 
(https://i.postimg.cc/Fd3BrHLW/9907-D81-A-2-E85-4067-BB03-1546-FB2-B1-DB6.jpg) (https://postimg.cc/Fd3BrHLW)
Pickering:
(https://i.postimg.cc/ctW5rG7s/EA6-AF211-38-FE-48-C7-8995-44-F06910218-E.jpg) (https://postimg.cc/ctW5rG7s)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 13, 2020, 11:45:11 AM
Honest Abe,

Do your lawn sprinklers hit your mangos' leaves?  It looks like mineral deposits from water.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on September 13, 2020, 01:05:03 PM
Honest Abe,

Do your lawn sprinklers hit your mangos' leaves?  It looks like mineral deposits from water.

I think he means the dark spots which look like MBBS.  The deposits may be from copper being sprayed?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 13, 2020, 06:10:27 PM
bsbullie, you are right.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on September 13, 2020, 07:48:12 PM

(https://i.postimg.cc/G9Vx6BxY/20200913-192159.jpg) (https://postimg.cc/G9Vx6BxY)

(https://i.postimg.cc/VJcBL3Tk/20200913-192233.jpg) (https://postimg.cc/VJcBL3Tk)

(https://i.postimg.cc/rDCGdfXC/20200913-192238.jpg) (https://postimg.cc/rDCGdfXC)

Any help is appreciated. Sad to know that these are acting up as I bought these from a reputable nursery in FL not to long ago...Should've looked at the leaves more closely before buying them.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Honest Abe on September 13, 2020, 10:07:30 PM
Thank You Guanabanus and BSBullie, I’ve never sprayed them with copper, but the MBBS Is bad news. I’m sad to hear this. Maybe the fruit will be unaffected...I hope.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 14, 2020, 08:58:03 AM
Jaboticaba45,

I am not sure that there is a problem, but maybe the tree is a little low on Zinc and maybe Copper too.

Have you fertilized the tree since you got it?  What is the soil like?


HonestAbe,

I have seen several trees with abundant foliar Mango Bacterial Black Spot, which trees never had it on their fruit--- and several trees with infested fruits and clean leaves.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on September 14, 2020, 10:51:04 AM
Guanabanus,


They are in the same soil when purchased at the nursery(sand woodchips, etc). One of them I repotted with peat/perlite and I have not fertilized them. Also have a question about anthracnose. How to treat it? I read to spray with copper fungicide...

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 14, 2020, 01:27:45 PM
Copper spray is a good preventive of anthracnose infections getting started.  Nothing fixes damage already done.

Do give your tree micronutrients, at least.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on September 14, 2020, 01:29:55 PM
Thank you Guanabanus!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on September 14, 2020, 04:49:39 PM
Iron drenching question-
Is there a general diluted percent of iron in drenching water to shoot for?
Meaning, i could use 5 gallons or 10 gallons 1/2 strength of 5 gallons.
Typical sandy Florida soil.
Thank you.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on September 14, 2020, 07:12:11 PM
Guanabanus,


They are in the same soil when purchased at the nursery(sand woodchips, etc). One of them I repotted with peat/perlite and I have not fertilized them. Also have a question about anthracnose. How to treat it? I read to spray with copper fungicide...

I dont see any anthracnose on the leaves in that picture.  Also, unless the tree came to you with it, not sure you woukd have any issues in Tennessee.  If you dont need to, dont spray it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 14, 2020, 08:23:26 PM
Most products come with directions on the label.  I have never seen a liquid micronutrient product that was intended for use without considerable dilution.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: achetadomestica on September 14, 2020, 09:09:20 PM

(https://i.postimg.cc/G9Vx6BxY/20200913-192159.jpg) (https://postimg.cc/G9Vx6BxY)

(https://i.postimg.cc/VJcBL3Tk/20200913-192233.jpg) (https://postimg.cc/VJcBL3Tk)

(https://i.postimg.cc/rDCGdfXC/20200913-192238.jpg) (https://postimg.cc/rDCGdfXC)

Any help is appreciated. Sad to know that these are acting up as I bought these from a reputable nursery in FL not to long ago...Should've looked at the leaves more closely before buying them.

I used Southern Ag and had good results this year. It has more Zinc then miralce grow

https://www.bing.com/search?q=southern+ag+citrus+spray&form=ANNNB1&refig=05dee1949319461586a5c74daf410420&sp=3&qs=AS&pq=southern+ag+citrus&sk=PRES1AS2&sc=4-18&cvid=05dee1949319461586a5c74daf410420 (https://www.bing.com/search?q=southern+ag+citrus+spray&form=ANNNB1&refig=05dee1949319461586a5c74daf410420&sp=3&qs=AS&pq=southern+ag+citrus&sk=PRES1AS2&sc=4-18&cvid=05dee1949319461586a5c74daf410420)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on September 15, 2020, 08:05:00 AM
 
Guanabanus,


They are in the same soil when purchased at the nursery(sand woodchips, etc). One of them I repotted with peat/perlite and I have not fertilized them. Also have a question about anthracnose. How to treat it? I read to spray with copper fungicide...

I dont see any anthracnose on the leaves in that picture.  Also, unless the tree came to you with it, not sure you woukd have any issues in Tennessee.  If you dont need to, dont spray it.
Ok thanks!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on September 16, 2020, 05:21:34 PM
Keyplex 350 is the best.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HoangNguyen on September 16, 2020, 09:18:26 PM
Please help to ID the issue of my mango leaf.
(https://i.postimg.cc/MM1Qckxm/KeoLeaf.jpg) (https://postimg.cc/MM1Qckxm)

(https://i.postimg.cc/RJ9nKPZ5/KeoLeaf1.jpg) (https://postimg.cc/RJ9nKPZ5)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 17, 2020, 07:25:38 PM
Perhaps deficient in Boron and Potassium--- I am not at all confident about that.

It hasn't been splashed with deck cleaner, has it?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mango Stein on September 17, 2020, 07:58:10 PM
This Coconut Cream seedling was fine all winter. Now all of sudden the tips look like they have been painted with black tar. It's in a container still. No other pests on leaves and not near other trees.

(https://i.postimg.cc/r04kLbVX/20200917-173228.jpg) (https://postimg.cc/r04kLbVX)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: HoangNguyen on September 18, 2020, 01:59:29 AM
Perhaps deficient in Boron and Potassium--- I am not at all confident about that.

It hasn't been splashed with deck cleaner, has it?

Hi Har,

Do you refer to my mango leaf issue?  If you do, thank you.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 20, 2020, 12:19:34 PM
Yes, Hoang.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 20, 2020, 12:22:54 PM
Mango Stein,

I would cut off less than an inch of that stem, if the wood at your cut is clean inside, then spray whole plant with Copper and a micro-nutrient mix.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on September 20, 2020, 04:08:48 PM
A monthly application on a small mango in a 3-gal. pot: one level teaspoon, well spread over most of the soil surface, but not touching the trunk.  Rounded up teaspoon if the plant is over 2 feet tall.
Just realized I (almost) doubled the application of the fertilizer on all my potted mangoes earlier today; mixed it in real well, no possibility of backing it out (I could scoop the top 4" of potting mix out of each pot, but that would be a lot of wasted mix). It's only the second application of this time-released 8-3-9 fertilizer, used fish emulsion and compost tea before this. What do you think I should do now? What do I look for as an indicator that I have a problem? Should I water more or less now?

Thanks!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 20, 2020, 07:29:06 PM
Water more.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on September 20, 2020, 07:55:37 PM
Easy enough, it's raining as I type right now. Thanks Har.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mango Stein on September 22, 2020, 04:23:57 AM
Har, I have bad news. Though I was able to cut an inch off until there was clean wood, I did not show you the other stem where the same problem exists only at a lower node. Interestingly the tip of the branch looks healthy. Now what do I do? Cut off everything down to the node?

I still don't know the source of this disease. In your videos you would always instruct us to "look above" for the source. Or the underside of leaves for critters. But neither is applicable here. This is a "lone wolf" pest. Some kind of fungus I think.

(https://i.postimg.cc/YvFXQDdp/20200917-173150-1.jpg) (https://postimg.cc/YvFXQDdp)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 22, 2020, 11:29:52 AM
Yes it does look like fungus or bacteria.  I would consider cutting that other branch below the infection, if the infection has penetrated below the leaf bases.

A foliar or soil application of a phosphite fertilizer product may also help.  Such as Super Foliar Phosphite, or Ag-phite.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: skhan on September 26, 2020, 08:47:15 AM

(https://i.postimg.cc/7GcH2x1K/IMG-20200920-100248085-HDR.jpg) (https://postimg.cc/7GcH2x1K)

(https://i.postimg.cc/mcm2T3Pf/IMG-20200920-100252302-HDR.jpg) (https://postimg.cc/mcm2T3Pf)

(https://i.postimg.cc/w3yTdmHZ/IMG-20200920-100256943-HDR.jpg) (https://postimg.cc/w3yTdmHZ)


I saw this on a few of my father's trees.
Any ideas
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 26, 2020, 11:18:22 AM
skhan,

I don't know.

Has weed-and-feed type fertilizer been used within 40 feet of the tree--- his yard or the neighbor's?  Has 2,4-D or specialty herbicides been sprayed upwind of the tree?

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: skhan on September 26, 2020, 12:13:41 PM
skhan,

I don't know.

Has weed-and-feed type fertilizer been used within 40 feet of the tree--- his yard or the neighbor's?  Has 2,4-D or specialty herbicides been sprayed upwind of the tree?

Thanks Har,

Weed and feed is possible from the neighbor. All around the trees (on his side) is hardscaped. 
I'll take a look at there lawn when i go by next time.
Its in a pretty nice residential area, so i doubt any of the homeowners are using anything crazy. But you never know i guess
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: strkpr00 on September 27, 2020, 09:07:30 PM
Lakes are routinely with weed killer, maybe the water in the back round was treated.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: alejandro on October 04, 2020, 04:41:53 PM
May be a dumb question, but is there any benefit ( or downside) to planting while its raining a lot?

The upside is you won't have to irrigate as much during the rainy season to get your new trees established.   This may save you time.  :)  The downside is that by not irrigating as often, you won't see your trees as often and be able to provide updates on the forum as often.   ;)

weirdo
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: ammoun on October 08, 2020, 10:34:12 AM
(https://i.postimg.cc/LhXzn8b0/image.png) (https://postimg.cc/LhXzn8b0) (https://i.postimg.cc/TLH5rn4N/image.png) (https://postimg.cc/TLH5rn4N) (https://i.postimg.cc/bsnStDHL/image.png) (https://postimg.cc/bsnStDHL) (https://i.postimg.cc/m1HkCJMh/image.png) (https://postimg.cc/m1HkCJMh) (https://i.postimg.cc/6yV5Kdhs/image.png) (https://postimg.cc/6yV5Kdhs) (https://i.postimg.cc/hJvSVNRg/image.png) (https://postimg.cc/hJvSVNRg) (https://i.postimg.cc/k2X9dL48/image.png) (https://postimg.cc/k2X9dL48)

I'm not worried about the salt burn, but are the black spots anthracnose? They are very recent. (Newer leaves seem unaffected) It hasn't rained here in my arid mediterranean climate since at least 3 weeks, but I do notice sometimes some fog drip at night.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bovine421 on October 25, 2020, 06:25:43 PM
Help help I need help :) HoneyKiss
(https://i.postimg.cc/p9gzYhT7/20201025-181914.jpg) (https://postimg.cc/p9gzYhT7)
Started at the bottom and now it's working its way to the top
(https://i.postimg.cc/QVgYCsYs/20201025-181929.jpg) (https://postimg.cc/QVgYCsYs)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on October 25, 2020, 06:41:19 PM
Sooty mold? Happened to my tree also. I hear that it doesnt do any damage... let us see what others have to say.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on October 25, 2020, 07:11:47 PM
Help help I need help :) HoneyKiss
(https://i.postimg.cc/p9gzYhT7/20201025-181914.jpg) (https://postimg.cc/p9gzYhT7)
Started at the bottom and now it's working its way to the top
(https://i.postimg.cc/QVgYCsYs/20201025-181929.jpg) (https://postimg.cc/QVgYCsYs)

Looks like sooty mold, at least from what I can tell on the pictures.   Its caused by excrement from pests.  Look for scale, white fly or aphids on that tree or other trees in the immediate vicinity.  It will be exacerbated by humid and shaded conditions.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on October 25, 2020, 07:38:37 PM
Does regular spraying of  trees with neem & some dawn help prevent issues like these?
Asking for future problems.
Also, can neem hurt by smothering leaves if over applied?
Thank you.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 25, 2020, 08:17:39 PM
Ammoun, I am not sure what that is.  Maybe your guess is right, if the black spots do not rub off.

Bovine, Black Sooty Mold, and under the leaves you will probably find mango scale.  Spray undersides of leaves with an insecticide.

Eddi, follow directions on labels for amount per gallon,  time of day and temperature during spraying time.  Oils only work during slow-drying conditions.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bovine421 on October 25, 2020, 08:38:58 PM
Ammoun, I am not sure what that is.  Maybe your guess is right, if the black spots do not rub off.

Bovine, Black Sooty Mold, and under the leaves you will probably find mango scale.  Spray undersides of leaves with an insecticide.

Eddi, follow directions on labels for amount per gallon,  time of day and temperature during spraying time.  Oils only work during slow-drying conditions.
(https://i.postimg.cc/GBzH74qz/20201025-202855.jpg) (https://postimg.cc/GBzH74qz)
Wow this looks like ick like my guppies get when I don't have their thermostat on. :)
(https://i.postimg.cc/MMvK9dcK/20201025-202938.jpg) (https://postimg.cc/MMvK9dcK)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on October 25, 2020, 09:48:43 PM
Thanks Har.  I used it once last yr, didn't solve problems but leaves had nice waxy look i liked.
Does anyone here use it as regular maintenance/prevention?


Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 25, 2020, 10:39:35 PM
Bovine,

Mango scale and masses of their eggs and crawlers.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bovine421 on October 25, 2020, 11:41:07 PM
Bovine,

Mango scale and masses of their eggs and crawlers.
(https://i.postimg.cc/3kq8fzG4/ee4290d3ead746b08be00b9ba746b08c.jpg) (https://postimg.cc/3kq8fzG4)

(https://i.postimg.cc/bG2z7L06/61id-HZh-Mr7-L-AC-UL320.jpg) (https://postimg.cc/bG2z7L06)

Which would work best soap or oil
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 26, 2020, 09:32:07 AM
Soap first.  Let it dry.  Then neem oil.    All in slow-drying conditions.  If either spray dries in fewer than 15 minutes, it probably won't have accomplished anything.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dross99_si on October 27, 2020, 08:54:10 AM
Looks like fungus starting to show up on our Carrie, Edward and Coconut Cream. Powdery mildew, Anthracnose, something else? SE Florida zone 10a.
I sprayed potassium bicarbonate (Green Cure) about a week ago at first sign of disease.
Next will be copper soap and micronized sulfur.

(https://i.postimg.cc/mPMcyRGs/154353-D9-2-EDC-4-A6-E-8-F94-FF6-FF71880-F6.jpg) (https://postimg.cc/mPMcyRGs)

(https://i.postimg.cc/zV4bhv67/6098-DBF9-CA2-E-4347-81-EE-0-B7702-BBB7-D7.jpg) (https://postimg.cc/zV4bhv67)

(https://i.postimg.cc/JGsHtZ6t/8-DA4-A7-BF-D977-44-C9-91-EF-7-DCBAFB00024.jpg) (https://postimg.cc/JGsHtZ6t)

(https://i.postimg.cc/F1sL520y/EA21-B2-D9-D5-B1-41-F6-8-A22-365-DE6-B3-B18-E.jpg) (https://postimg.cc/F1sL520y)

(https://i.postimg.cc/XZbr2hVy/EEF76450-2-CAC-4269-B3-CF-13-F93-CB1381-F.jpg) (https://postimg.cc/XZbr2hVy)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 27, 2020, 11:54:37 AM
dross,
First three pictures:
Fungus yes;  Powdery-Mildew is unlikely in all this rain;  doesn't look like Anthracnose.  Perhaps it is Cylindrocladium, but there are also other fungi that do circular rings.

Last two Pictures:
Salt burn is unlikely in all this rain, unless you put down a high amount of quick-release fertilizer.  It looks like Potassium deficiency with fungus moving in on the weakness.

I am not qualified as a plant pathologist.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 27, 2020, 12:00:21 PM
dross,

Your spray materials are good.

You might also use a Phosphite product, such as Plant Doctor, from Organocide brand.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dross99_si on October 27, 2020, 12:07:49 PM
dross,
First three pictures:
Fungus yes;  Powdery-Mildew is unlikely in all this rain;  doesn't look like Anthracnose.  Perhaps it is Cylindrocladium, but there are also other fungi that do circular rings.

Last two Pictures:
Salt burn is unlikely in all this rain, unless you put down a high amount of quick-release fertilizer.  It looks like Potassium deficiency with fungus moving in on the weakness.

I am not qualified as a plant pathologist.

Thanks Har.
As far as the recent potassium bicarb spray, do I have to wait a certain amount of time before applying the copper/sulfur mix? The Green Cure label does not specify. Have not used any oil product recently. I want to nip this as soon as possible.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on October 27, 2020, 12:51:57 PM
Looks like fungus starting to show up on our Carrie, Edward and Coconut Cream. Powdery mildew, Anthracnose, something else? SE Florida zone 10a.
I sprayed potassium bicarbonate (Green Cure) about a week ago at first sign of disease.
Next will be copper soap and micronized sulfur.

(https://i.postimg.cc/mPMcyRGs/154353-D9-2-EDC-4-A6-E-8-F94-FF6-FF71880-F6.jpg) (https://postimg.cc/mPMcyRGs)

(https://i.postimg.cc/zV4bhv67/6098-DBF9-CA2-E-4347-81-EE-0-B7702-BBB7-D7.jpg) (https://postimg.cc/zV4bhv67)

(https://i.postimg.cc/JGsHtZ6t/8-DA4-A7-BF-D977-44-C9-91-EF-7-DCBAFB00024.jpg) (https://postimg.cc/JGsHtZ6t)

(https://i.postimg.cc/F1sL520y/EA21-B2-D9-D5-B1-41-F6-8-A22-365-DE6-B3-B18-E.jpg) (https://postimg.cc/F1sL520y)

(https://i.postimg.cc/XZbr2hVy/EEF76450-2-CAC-4269-B3-CF-13-F93-CB1381-F.jpg) (https://postimg.cc/XZbr2hVy)

In the first two pictures, I have seen that look on Coco Creams grown in pots with poor airflow at nurseries.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dross99_si on October 27, 2020, 02:33:41 PM
Looks like fungus starting to show up on our Carrie, Edward and Coconut Cream. Powdery mildew, Anthracnose, something else? SE Florida zone 10a.
I sprayed potassium bicarbonate (Green Cure) about a week ago at first sign of disease.
Next will be copper soap and micronized sulfur.

(https://i.postimg.cc/mPMcyRGs/154353-D9-2-EDC-4-A6-E-8-F94-FF6-FF71880-F6.jpg) (https://postimg.cc/mPMcyRGs)

(https://i.postimg.cc/zV4bhv67/6098-DBF9-CA2-E-4347-81-EE-0-B7702-BBB7-D7.jpg) (https://postimg.cc/zV4bhv67)

(https://i.postimg.cc/JGsHtZ6t/8-DA4-A7-BF-D977-44-C9-91-EF-7-DCBAFB00024.jpg) (https://postimg.cc/JGsHtZ6t)

(https://i.postimg.cc/F1sL520y/EA21-B2-D9-D5-B1-41-F6-8-A22-365-DE6-B3-B18-E.jpg) (https://postimg.cc/F1sL520y)

(https://i.postimg.cc/XZbr2hVy/EEF76450-2-CAC-4269-B3-CF-13-F93-CB1381-F.jpg) (https://postimg.cc/XZbr2hVy)

In the first two pictures, I have seen that look on Coco Creams grown in pots with poor airflow at nurseries.

What do you suspect it is Rob?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 27, 2020, 02:54:13 PM
Plant Doctor is not an oil product.  Perhaps you are thinking of "Organocide 3-in-1".
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dross99_si on October 27, 2020, 05:51:33 PM
Plant Doctor is not an oil product.  Perhaps you are thinking of "Organocide 3-in-1".

No I'm just saying I have not used any oil products on these trees recently but I did spray potassium bicarb yesterday morning. The question is how long do I need to wait before spraying the copper soap/sulfur?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on October 27, 2020, 06:10:00 PM
Looks like fungus starting to show up on our Carrie, Edward and Coconut Cream. Powdery mildew, Anthracnose, something else? SE Florida zone 10a.
I sprayed potassium bicarbonate (Green Cure) about a week ago at first sign of disease.
Next will be copper soap and micronized sulfur.

(https://i.postimg.cc/mPMcyRGs/154353-D9-2-EDC-4-A6-E-8-F94-FF6-FF71880-F6.jpg) (https://postimg.cc/mPMcyRGs)

(https://i.postimg.cc/zV4bhv67/6098-DBF9-CA2-E-4347-81-EE-0-B7702-BBB7-D7.jpg) (https://postimg.cc/zV4bhv67)

(https://i.postimg.cc/JGsHtZ6t/8-DA4-A7-BF-D977-44-C9-91-EF-7-DCBAFB00024.jpg) (https://postimg.cc/JGsHtZ6t)

(https://i.postimg.cc/F1sL520y/EA21-B2-D9-D5-B1-41-F6-8-A22-365-DE6-B3-B18-E.jpg) (https://postimg.cc/F1sL520y)

(https://i.postimg.cc/XZbr2hVy/EEF76450-2-CAC-4269-B3-CF-13-F93-CB1381-F.jpg) (https://postimg.cc/XZbr2hVy)

In the first two pictures, I have seen that look on Coco Creams grown in pots with poor airflow at nurseries.

What do you suspect it is Rob?

Not sure.  I would say a fungus of some type but it not only causes the spots but causes curling and deformation of tff he leaves.  I would look toward a systemic fungicide, perhaps Abound if you can get it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on October 27, 2020, 06:12:29 PM
Plant Doctor is not an oil product.  Perhaps you are thinking of "Organocide 3-in-1".

No I'm just saying I have not used any oil products on these trees recently but I did spray potassium bicarb yesterday morning. The question is how long do I need to wait before spraying the copper soap/sulfur?

I doubt copper is going to tackle the issues on the Coco Cream.  See my message above regarding Abound.

If its not PM, why bother with the sulfur.  Less is more when applying chemicals.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dross99_si on October 27, 2020, 06:24:40 PM
Plant Doctor is not an oil product.  Perhaps you are thinking of "Organocide 3-in-1".

No I'm just saying I have not used any oil products on these trees recently but I did spray potassium bicarb yesterday morning. The question is how long do I need to wait before spraying the copper soap/sulfur?

I doubt copper is going to tackle the issues on the Coco Cream.  See my message above regarding Abound.

If its not PM, why bother with the sulfur.  Less is more when applying chemicals.

Wow that is some expensive stuff!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on October 27, 2020, 07:23:18 PM
ndm is flowering now. I noticed lots of ants on the flowers. Are they of any concern? Thanks.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on October 27, 2020, 07:33:48 PM
ndm is flowering now. I noticed lots of ants on the flowers. Are they of any concern? Thanks.

Look on or under leaves for scale or aphids.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on October 27, 2020, 07:35:01 PM
Plant Doctor is not an oil product.  Perhaps you are thinking of "Organocide 3-in-1".

No I'm just saying I have not used any oil products on these trees recently but I did spray potassium bicarb yesterday morning. The question is how long do I need to wait before spraying the copper soap/sulfur?

I doubt copper is going to tackle the issues on the Coco Cream.  See my message above regarding Abound.

If its not PM, why bother with the sulfur.  Less is more when applying chemicals.

Wow that is some expensive stuff!

Yeah but its a good product.  Good to have if you have peaches/nectarines,  too.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 28, 2020, 09:43:54 AM
Labels normally contain information about intervals between spraying the label's product and products that are super common, if there is a known issue.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Fishinsteeg234 on October 29, 2020, 06:03:39 PM
Hey Guys, so what’s my 1.5 year old VP telling me is wrong? Starting seeing this about 3 weeks ago. I sprayed southern AG Foliar spray for citrus, advocation, mango just two days ago to try to correct micronutrient deficiency. Seems within last 2 days things have gotten worse. What do you think this is and What do you recommend to correct the issue?
(https://i.postimg.cc/bGBtz5h8/17-E41-D0-F-C655-40-B8-BEE6-7-F190-D2760-A9.jpg) (https://postimg.cc/bGBtz5h8)

(https://i.postimg.cc/n989mQrP/3-D067-A5-C-EF50-4548-AF49-63-D9-B18-D6-A3-B.jpg) (https://postimg.cc/n989mQrP)

(https://i.postimg.cc/BX01QDd8/84510-F8-C-BABF-4-C1-F-8356-C4658-E7-C0565.jpg) (https://postimg.cc/BX01QDd8)

(https://i.postimg.cc/jWgzD5yp/9-F2-D42-C8-78-FB-448-E-ABD6-4-AE244116144.jpg) (https://postimg.cc/jWgzD5yp)

(https://i.postimg.cc/JtJkLKdV/AF0522-D1-96-B5-4-A01-9-DC3-A7-E9-EC9-C837-F.jpg) (https://postimg.cc/JtJkLKdV)

(https://i.postimg.cc/CBnfd4h8/BD517-B15-F644-418-B-8-D34-5-B660-E2-A85-B6.jpg) (https://postimg.cc/CBnfd4h8)

(https://i.postimg.cc/bZLn5JVZ/C3851580-A8-C8-4-D17-97-B0-E20-D1-BBDF8-EB.jpg) (https://postimg.cc/bZLn5JVZ)

(https://i.postimg.cc/f3LdQN1B/F55-B15-E0-74-F8-4-E3-C-B4-AD-6-CC06-B562141.jpg) (https://postimg.cc/f3LdQN1B)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on October 29, 2020, 06:48:24 PM
Sandy soil, very high pH, these are all seedlings. Thanks!
 
A- (https://i.postimg.cc/Vdj8F0Zc/image.png) (https://postimg.cc/Vdj8F0Zc) B- (https://i.postimg.cc/62gXMrNB/image.png) (https://postimg.cc/62gXMrNB) C- (https://i.postimg.cc/DJt9r7qZ/image.png) (https://postimg.cc/DJt9r7qZ) D- (https://i.postimg.cc/hhmWS7B7/image.png) (https://postimg.cc/hhmWS7B7)  E- (https://i.postimg.cc/dk8BfFbD/image.png) (https://postimg.cc/dk8BfFbD)


Soil analysis, I have added a lot of compost since this test (A year ago)
(https://i.postimg.cc/bSqwx00d/image.png) (https://postimg.cc/bSqwx00d)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 29, 2020, 08:41:14 PM
Fishingsteeg,

Possibly MangoBacterialBlackSpot, but could be a fungus.  For either one, spray Copper products, to reduce the spread.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 29, 2020, 09:05:04 PM
Mangoba,

The only thing I see out of kilter is low Manganese--- it should be equal to or greater than Iron.  Could also be low Sulfur.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Fishinsteeg234 on October 29, 2020, 09:53:11 PM
Fishingsteeg,

Possibly MangoBacterialBlackSpot, but could be a fungus.  For either one, spray Copper products, to reduce the spread.

Thanks Har,

I’ll start to tackle it. Thanks
-Alex
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: palingkecil on November 03, 2020, 02:18:52 PM
Please help rescue my new mango! This is a Triple Sec/ Seacrest. Last week it arrived healthy after 3 days shipping from Florida. It was wrapped with its soil(pic 1). I put it in a 5 gallon pot with fast drain potting soil temporarily before plant it in the ground. Slowly the leaves turn yellow, and the leaves drop one by one. The other 2 trees are not experiencing this. I water everyday because I thought it is okay with the fast drain soil. The water goes out immidiately from the bottom.
What did I do wrong? Too much water? Any fungus root maybe? Should I repot it soon? The tree was under the full shade before, but I moved it to get about 2 hours sun now to dry the soil in case of overwatering.
Thank you for any advice.

(https://i.postimg.cc/ppBF4bss/20201026-161812.jpg) (https://postimg.cc/ppBF4bss)

(https://i.postimg.cc/wt1R1tgr/20201103-101618.jpg) (https://postimg.cc/wt1R1tgr)

(https://i.postimg.cc/R3tfP3yH/20201103-101520.jpg) (https://postimg.cc/R3tfP3yH)

(https://i.postimg.cc/9whDgJZ3/20201103-101652.jpg) (https://postimg.cc/9whDgJZ3)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 03, 2020, 06:30:20 PM
Three-days'-shipping in total darkness is hard on trees--- they start to starve--- then it went into "total shade"--- more starvation.  The only food plants have is glucose from Photosynthesis.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: palingkecil on November 03, 2020, 09:30:23 PM
Three-days'-shipping in total darkness is hard on trees--- they start to starve--- then it went into "total shade"--- more starvation.  The only food plants have is glucose from Photosynthesis.

Thanks, Har. I moved it to a sunny location. Hopefully it will recover soon.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on November 04, 2020, 10:06:22 PM
From my experience, trees shipped from Florida by ground without pot takes 6-12 months to recover. That is if it doesn’t die during winter. Trees shipped with pot fare much better but still takes at least 3 months to recover.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: spaugh on November 04, 2020, 11:44:48 PM
From my experience, trees shipped from Florida by ground without pot takes 6-12 months to recover. That is if it doesn’t die during winter. Trees shipped with pot fare much better but still takes at least 3 months to recover.

That always pissed me off when they shook off half the dirt and wrapped them without a pot.  Totally ruins the tree doing that to them.  Its even worse on lychee trees. 

Better to just grow seedlings and graft them yourself.  And way cheaper.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MangoTango on November 05, 2020, 11:41:08 PM

(https://i.postimg.cc/K1h5hThV/VP.jpg) (https://postimg.cc/K1h5hThV)



Whats wrong with this VP, it has stopped growing, there are black spots on the top stem and the top nodes look black on the 2 top stems.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MangoTango on November 05, 2020, 11:45:53 PM

(https://i.postimg.cc/WtW2ymgN/VP2.jpg) (https://postimg.cc/WtW2ymgN)

(https://i.postimg.cc/YhvpB4z1/VP3.jpg) (https://postimg.cc/YhvpB4z1)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MangoTango on November 05, 2020, 11:48:23 PM
Are these bottom leaves from rootstock? do they look like turpentine mango leaves?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 06, 2020, 03:02:44 PM
Not Turpentine leaves.

Spray with Copper and other micro-nutrients.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MangoTango on November 06, 2020, 07:39:22 PM
Thanks Har, so bottom leaves are also Valencia Pride, thats good to know. I will spray with Copper.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on November 16, 2020, 06:01:30 PM
(https://i.postimg.cc/gxn4w3xH/20201104-163305.jpg) (https://postimg.cc/gxn4w3xH)

does this look ok? Since this is a grafted tree, I assume that this is turpentine. Is this rot? if so what should I do? Thanks
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 16, 2020, 08:30:01 PM
Not O.K.   Spray the cracks, and the whole plant with a Copper product that penetrates, such as ones that contain Copper Sulfate Pentahydrate.  Good Copper and Calcium nutrition fortifies bark, and so does soluble Silicon, such as Potassium Silicate products.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on November 20, 2020, 03:36:27 PM
Thanks a lot Har!

Is there a known anomaly with apical buds to halt for no apparent reason? Cold maybe? As you can see, lower buds are engaging.


(https://i.postimg.cc/jw5DNWQP/image.png) (https://postimg.cc/jw5DNWQP)  (https://i.postimg.cc/bZpNkDqr/image.png) (https://postimg.cc/bZpNkDqr)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 20, 2020, 06:52:24 PM
Probably microscopic bud-mites.  Hard to deal with.  Need systemic miticides.  Or pruning.

Deficiencies of Boron, Copper, Calcium, etc., can also cause terminal bud problems.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Andika on December 07, 2020, 08:04:07 AM
Hello,

I discovered a black spot on my 2.5 years old mango seedling:( Is this some kind of disease? Should I do something? Thank you for your help!

(https://i.postimg.cc/K1b9fcZZ/20201207-123621.jpg) (https://postimg.cc/K1b9fcZZ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 07, 2020, 02:38:44 PM
It could be an infection, or it could be sap oozing from a bug bite or other small wound.  Spray with a Copper-containing product that will penetrate.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Dangermouse01 on December 07, 2020, 05:06:28 PM
Hello,

I discovered a black spot on my 2.5 years old mango seedling:( Is this some kind of disease? Should I do something? Thank you for your help!

(https://i.postimg.cc/K1b9fcZZ/20201207-123621.jpg) (https://postimg.cc/K1b9fcZZ)

When zoomed in on it, it kind of looks like some type of soft scale.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Andika on December 08, 2020, 06:16:47 AM
Thanks Har and Dangermouse01!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on December 10, 2020, 08:51:30 AM
(https://i.postimg.cc/0zrpTsN7/image.png) (https://postimg.cc/0zrpTsN7)   (https://i.postimg.cc/K1dgC3wy/image.png) (https://postimg.cc/K1dgC3wy)

This happens every year around this time, temperatures drop to around 44 at night. Rain is scarce but every now and then we get some. Thanks
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 10, 2020, 10:47:23 AM
Mango Ba, have you had your soil tested?

Cold roots are less able to absorb minerals, so imbalances are more likely to occur. 

The leaves look deficient in Magnesium, or maybe have too much salt; they also may have damage from Thrips insects, which multiply in dry chilly weather.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on December 10, 2020, 02:08:48 PM
Mango Ba, have you had your soil tested?

Cold roots are less able to absorb minerals, so imbalances are more likely to occur. 

The leaves look deficient in Magnesium, or maybe have too much salt; they also may have damage from Thrips insects, which multiply in dry chilly weather.

Thanks!

Here is the test:
(https://i.postimg.cc/wy6d9W8h/image.png) (https://postimg.cc/wy6d9W8h)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 10, 2020, 08:41:10 PM
Check the leaves with a magnifying glass for Thrips or their exoskeletons;  if you find them, then that is, or was, the main problem.  Spray with an insecticide labeled for Thrips.

If Thrips aren't the problem, then sprinkle a handful of elemental Sulfur within an 18-inch circle, and about a teaspoon of Epsom Salt (Magnesium Sulfate).  Some chelated Manganese would also help.  And spray with Copper Sulfate.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on December 11, 2020, 03:05:28 PM
Thank you Har, how much should I put from this product please as I have plenty of it.

https://s3-us-west-1.amazonaws.com/www.agrian.com/pdfs/Brexil_Multi_Label1k.pdf (https://s3-us-west-1.amazonaws.com/www.agrian.com/pdfs/Brexil_Multi_Label1k.pdf)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 11, 2020, 05:48:20 PM
1/4 teaspoon in half a gallon of water.  Repeat in a month.  Still use extra Magnesium;  Epsom Salt is also known as Bitter Salt, and is usually available in pharmacies, for foot soaking.

It may also be beneficial to pull the pebble mulch back a couple of inches from the trunk.

Use granular fertilizer with at least 10% Potassium.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on December 12, 2020, 11:35:03 AM
1/4 teaspoon in half a gallon of water.  Repeat in a month.  Still use extra Magnesium;  Epsom Salt is also known as Bitter Salt, and is usually available in pharmacies, for foot soaking.

It may also be beneficial to pull the pebble mulch back a couple of inches from the trunk.

Use granular fertilizer with at least 10% Potassium.

I was able to acquire 2lb of Magnesium Sulfate, and I already have some Potassium Sulfate. I hope the Sulphate in both products will be enough to substitue the elemental Sulphur since I cannot find it here. I'm unable to see any thrips on the leaves, but I've had multiple symptoms of micro deficiencies in several seedlings. (Pale leaves, stunted growth, leaf deformation...) The colder temperatures seem to trigger extreme deficiencies. For some reason, I was wrongly under the impression that these plants would just stop doing anything during Nov to Feb, so won't need any food.

My collection :):

Magnesium Sulfate
Potassium Sulfate
Diammonium phosphate
12-5-20+2CaO+2MgO 2M Slow release https://icl-sf.com/uk-en/products/turf_amenity/proturf-12-5-20-2cao-2mgo/ (https://icl-sf.com/uk-en/products/turf_amenity/proturf-12-5-20-2cao-2mgo/)
20-20-20 + TE Foliar https://www.atlanticaagricola.com/en/fertilizantes-foliaresy-liquidos/plantifol-20-20-20 (https://www.atlanticaagricola.com/en/fertilizantes-foliaresy-liquidos/plantifol-20-20-20)
16-11-10+2MgO+TE 8M Slow release https://icl-sf.com/ie-en/products/ornamental_horticulture/8748-osmocote-pro-8-9m/ (https://icl-sf.com/ie-en/products/ornamental_horticulture/8748-osmocote-pro-8-9m/)
Copper
Brexil Multi https://s3-us-west-1.amazonaws.com/www.agrian.com/pdfs/Brexil_Multi_Label1k.pdf (https://s3-us-west-1.amazonaws.com/www.agrian.com/pdfs/Brexil_Multi_Label1k.pdf)
Sequestrene 138

Summers here are hot, and city water is above 3gr/L. I don't have access to mulch, so I just cover the sand with compost to try to keep as much moisture during the heat, since my access to stored rain water is limited. I put around half a cup of  8M 16-11-10 osmocote pro in the summer and the same amount of 2M 12-5-20 10 weeks ago so it should be all gone.

Here is how it looks after I pulled away the layers of compost, you may see some of 8M osmocote left:
(https://i.postimg.cc/dDCtB5gd/image.png) (https://postimg.cc/dDCtB5gd)


Here an other seedling with what seems to be the same issue just developing, it's driving me crazy.
(https://i.postimg.cc/TpyjCvf0/image.png) (https://postimg.cc/TpyjCvf0)

An other that I think might end up doing the same, those seedlings don't get any water but rain/collected rain, so unless it's fertilizer salt, I would rule out the irrigation water salt.
(https://i.postimg.cc/nj21RMp5/image.png) (https://postimg.cc/nj21RMp5) (https://i.postimg.cc/fkWC37vh/image.png) (https://postimg.cc/fkWC37vh)





I will be adding 1/2 teaspoon/gallon of Brexil Multi, I was wondering about the dosage of Mg and K Sulfates please. the seedlings are about 10" tall.

Thank you.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on December 12, 2020, 11:42:21 AM
An other case, I hope I'm not abusing your niceness Har. The issue with this one is that the new growth started very healthy and happy, until the tempearures starting reaching 45-50f at night. Day temperatures are in the 65-70f. I waited too long for the new growth to harden and get green, but instead the new leaves are just deteriorating.

(https://i.postimg.cc/87tsfw0v/image.png) (https://postimg.cc/87tsfw0v)

The white residue is copper.

(https://i.postimg.cc/yDY8Kc88/image.png) (https://postimg.cc/yDY8Kc88)

PS: I wouldn't be surprised if each seedling has a different deficiency since the genetic diversity between them is large.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 12, 2020, 05:16:24 PM
With the 1/2 teaspoon Brexil Multi and 1/4 teaspoon Epsom Salt and 1/2 teaspoon Potassium Sulfate in one gallon of water, put one-half gallon at one plant.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 12, 2020, 05:19:11 PM
Avoid adding Nitrogen in late Fall or Winter;  that includes Nitrogen in Compost that is unfinished (that would still go into heat production if the compost were still in a heap one meter high).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on December 13, 2020, 07:15:32 AM
While I was distributing the halves gallon, I saw these insects that triggered a sight that I have been seeing all year regardless of the season. I recorded this video but in a nutshell every time I pour water thousands of these little insects start jumping all over the area. I have never seen them on leaves though. I'm not sure if they are decomposing the organic matter or maybe the thrips that I'm after? Thanks!

https://youtu.be/7wNxCE56jKE
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 13, 2020, 11:32:04 AM
I don't have any idea what those insects are.  Not thrips.  Not Fungus Gnats--- at least the ones that I know are black.

Probably your country's agriculture department or federal university would have a pest identification specialist.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on December 13, 2020, 07:22:58 PM
I just learned that they're called Springtails and shouldn't be harmful, I thought you may be interested.

https://www.youtube.com/watch?v=OwOL-MHcQ1w (https://www.youtube.com/watch?v=OwOL-MHcQ1w)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 14, 2020, 06:49:55 AM
Yes, interesting.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on December 16, 2020, 06:42:27 PM
Should I be looking for a chelated Manganese product? I'm not sure if Brexil Multi Mn will be available to the roots, what do you think please?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 16, 2020, 10:30:13 PM
The Manganese in Brexil Multi is chelated.  Great for roots.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on December 19, 2020, 08:58:40 AM
Har, I was able to find some Sulphur but it was the fongicide version %80 WP. It was about $1.50 per lb. Can this product have an effect on pH if I add it to the soil? If so, how much could I put per seedling please. Thanks!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 19, 2020, 10:39:17 AM
One handful, wearing a rubber or vinyl glove.

The Sulfur will lower the pH, which will be an improvement, making most of the other nutrients more available to the roots.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: skhan on December 20, 2020, 09:21:22 AM
These are two separate VPs in my father's front yard.
Both seem to have the same issue and don't really fruit that well.
(https://i.postimg.cc/4KSmsLRj/IMG-20201219-132826944.jpg) (https://postimg.cc/4KSmsLRj)

(https://i.postimg.cc/HJxrGGRQ/IMG-20201219-132833064.jpg) (https://postimg.cc/HJxrGGRQ)


This VP is on the same side where all the mature mango trees have struggled this year. We think the neighbors lawn people put some herbicide down.
(https://i.postimg.cc/14NN5QtB/IMG-20201219-132903567.jpg) (https://postimg.cc/14NN5QtB)

(https://i.postimg.cc/FYhfZkxC/IMG-20201219-132909398.jpg) (https://postimg.cc/FYhfZkxC)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: cbss_daviefl on December 20, 2020, 10:52:36 AM
I have no idea what herbicide damage looks like. Assuming it is not herbicide damage, I see a symmetrical yellowing of the leaf edges. That is typically magnesium. The necrosis could be potassium or fungus. Some extra 0-0-22 k-mag or 0-3-16 would be my plan. If your dad sprays fungicides on flowering mangos, that should help if it is a fungus issue.

These are two separate VPs in my father's front yard.
Both seem to have the same issue and don't really fruit that well.
(https://i.postimg.cc/4KSmsLRj/IMG-20201219-132826944.jpg) (https://postimg.cc/4KSmsLRj)

(https://i.postimg.cc/HJxrGGRQ/IMG-20201219-132833064.jpg) (https://postimg.cc/HJxrGGRQ)


This VP is on the same side where all the mature mango trees have struggled this year. We think the neighbors lawn people put some herbicide down.
(https://i.postimg.cc/14NN5QtB/IMG-20201219-132903567.jpg) (https://postimg.cc/14NN5QtB)

(https://i.postimg.cc/FYhfZkxC/IMG-20201219-132909398.jpg) (https://postimg.cc/FYhfZkxC)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 20, 2020, 03:34:07 PM
I agree with cbss,

I see old Powdery Mildew damage from last Spring, plus some Magnesium deficiency.

Alternatively, there could be a salt issue.  Is this near the seashore?  Or was a pool drained nearby?  Or was a lot of rich compost or manure placed nearby?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: skhan on December 21, 2020, 09:12:55 AM
Thanks guys,

The plants don't get as much fertilizer as they should and there have been fruit trees all over the yard for over 20 years so I'm sure the soil is depleted.
I'll start adding some potassium and magnesiun.

We are out near the glades and he fill in his pool about 4 years ago.
 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: weiss613 on December 23, 2020, 10:39:04 AM
Why don’t you ask your neighbor if he has used any weed and feed on his grass or weed and grass killer. But even if he says yes it can’t be the problem because he applied it to his earth and the only way it could affect those trees is if he over-sprayed or his property drains it’s surface water by those trees. You can’t say it’s from lack of water because we had many months of heavy rain in S Fl. It’s important that you look at the new leaves that emerge. If they look like crap or that they will worsen their black/brown spots it’s got to be chemical damage or anthracnose. Too much fertilizer can cause burns too.
No matter what caused it take some cultural action after this mango season or as soon as you might have to realize you won’t get fruit this year. Cut the tree down to 16’ and cut out all the branches on the inside so air can circulate and so that the ratio of the amount of roots to tree size gives the tree way more nutrition and way more sunlight and wind and heat to dry the rain and moisture that may be causing your tree to possibly have multiple funguses. I do this to my VP at the end of every season. You having nothing to lose since you haven’t been getting fruit.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jagmanjoe on December 23, 2020, 01:39:01 PM
I know it has been brought up before but it is easy to forget.  If you are using a well with a water softener it can cause issues.  I have a well but if I forget to shut the softener side and tank off beforehand, my hose will tend to drain the tank first which is softened water.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on December 23, 2020, 05:08:28 PM
I have a fertilizer/nutritional question.
Is it ok to fertilize while buds are just starting to show?
Suppose i should've asked before i did today, leaves looked like they were still a little hungry.
Just a couple lbs on 20yr old 1' or more diameter trunk, pruned maybe 10' high & 20' wide.
Possibly Kent, used this & watered it heavily.  I can't help wanting to fert when chance of rain coming.  Thanks.

(https://i.postimg.cc/Js47WpBX/IMG-2652.jpg) (https://postimg.cc/Js47WpBX)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 24, 2020, 05:52:11 PM
That is an excellent fruit-tree fertilizer (except that it is low in Manganese for mangos), but it is not appropriate from mid December through late February.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on December 24, 2020, 05:56:36 PM
Looking for some assistance please.  I was admiring my Venus trees today and happy that it's about to send out blooms.  But on one of the branches, I saw a lot of dark spots on the limbs.  Is this normal or something to be concerned over?


(https://i.postimg.cc/n97CjgWW/IMG-20201224-094450.jpg) (https://postimg.cc/n97CjgWW)

(https://i.postimg.cc/CB9RKScD/IMG-20201224-094458.jpg) (https://postimg.cc/CB9RKScD)

(https://i.postimg.cc/MMncxvmq/IMG-20201224-094505.jpg) (https://postimg.cc/MMncxvmq)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on December 25, 2020, 10:47:35 AM
Har, thank you, felt good hearing my fert's good stuff!  I won't use again till March.
Ordering manganese powder now.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 25, 2020, 11:45:32 AM
FLMickey,

I can't see very clearly.  Scrape a couple of those spots off and look underneath for live stuff and eggs.  It may be a waxy scale insect.

If that is what it is, brush off what you can with a toothbrush or similar, and soapy water.  Then spray with horticultural spray-oil or with neem oil, which work great in cool weather, but not when a freeze is predicted.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: skhan on December 25, 2020, 03:08:42 PM
These are two separate VPs in my father's front yard.
Both seem to have the same issue and don't really fruit that well.
(https://i.postimg.cc/4KSmsLRj/IMG-20201219-132826944.jpg) (https://postimg.cc/4KSmsLRj)

(https://i.postimg.cc/HJxrGGRQ/IMG-20201219-132833064.jpg) (https://postimg.cc/HJxrGGRQ)


This VP is on the same side where all the mature mango trees have struggled this year. We think the neighbors lawn people put some herbicide down.
(https://i.postimg.cc/14NN5QtB/IMG-20201219-132903567.jpg) (https://postimg.cc/14NN5QtB)

(https://i.postimg.cc/FYhfZkxC/IMG-20201219-132909398.jpg) (https://postimg.cc/FYhfZkxC)

Took some more pictures of the what was going on the north side of my dad's property.
I'll definitely get a soil test soon.

Malika (over 10yrs)
It flushed out in summer and the new leaves died back
(https://i.postimg.cc/tYZ15chC/IMG-20201225-123947028.jpg) (https://postimg.cc/tYZ15chC)

(https://i.postimg.cc/JsjswB6f/IMG-20201225-124005356.jpg) (https://postimg.cc/JsjswB6f)

Juliette (7yrs)
Same problem as Malika, right next door.
My dad cut the branches back after the leaves fell off

(https://i.postimg.cc/K3XXy4sW/IMG-20201225-124037164.jpg) (https://postimg.cc/K3XXy4sW)

(https://i.postimg.cc/DWZ3r9Xx/IMG-20201225-124051290.jpg) (https://postimg.cc/DWZ3r9Xx)

(https://i.postimg.cc/jwnV9yvN/IMG-20201225-124110424.jpg) (https://postimg.cc/jwnV9yvN)

Cotton Candy (2yrs)
Wavy new leaves, bunching branches, tiny internode spacing

(https://i.postimg.cc/d7Xp8Lv0/IMG-20201225-124312079.jpg) (https://postimg.cc/d7Xp8Lv0)

(https://i.postimg.cc/4HR0SqYk/IMG-20201225-124324250.jpg) (https://postimg.cc/4HR0SqYk)

(https://i.postimg.cc/8fdYQ4vF/IMG-20201225-124335884.jpg) (https://postimg.cc/8fdYQ4vF)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 25, 2020, 07:35:47 PM
skhan,

Two possibilities, neither of them easy to deal with:

Mango malformation, caused by internal infections of Fusarium Fungus, especially the second photo of your Father's pruned-back tree.  Infected branches should be removed--- cut several inches below the lowest visible infection, and the whole tree should be sprayed with Copper Sulfate Pentahydrate and a penetrant adjuvant.  A separate spray with several nutrients plus Ascorbic Acid (Vitamin-C) can also help.

Microscopic bud-mites.  Prune off infestations.  Follow up with a suffocating oil spray, or with a penetrating miticide.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on December 27, 2020, 09:40:05 PM
FLMickey,

I can't see very clearly.  Scrape a couple of those spots off and look underneath for live stuff and eggs.  It may be a waxy scale insect.

If that is what it is, brush off what you can with a toothbrush or similar, and soapy water.  Then spray with horticultural spray-oil or with neem oil, which work great in cool weather, but not when a freeze is predicted.

I scraped some of them off but didn't see an insect.  But I'll do as you say and brush off and use the neem oil.  Thank you so much Har for the help!  I really appreciate it!!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 28, 2020, 02:28:36 PM
If it is sap oozing through the bark, spray Copper.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: skhan on December 28, 2020, 07:45:22 PM
skhan,

Two possibilities, neither of them easy to deal with:

Mango malformation, caused by internal infections of Fusarium Fungus, especially the second photo of your Father's pruned-back tree.  Infected branches should be removed--- cut several inches below the lowest visible infection, and the whole tree should be sprayed with Copper Sulfate Pentahydrate and a penetrant adjuvant.  A separate spray with several nutrients plus Ascorbic Acid (Vitamin-C) can also help.

Microscopic bud-mites.  Prune off infestations.  Follow up with a suffocating oil spray, or with a penetrating miticide.

Thanks Har,

The Juliette has only produced a handful of fruits so far so this gives me an accuse to top work it

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on December 29, 2020, 04:33:27 PM
So, all 5 mangos i bought last month have/had black patches & spots on leaves, stems ect so i hit them with copper/neem mix 2x.
Neem because leaves were getting chewed on.  Foliar fed, fertilized & watered to the limit before hand.
Was cool this month when spraying neem/copper.

Used ag copper 1oz, dynagrow neem 1oz & touch of dawn to dissolve neem 1st.  Per gallon.
Buds forming on every plant.

Does this look like copper overdose?  Leaves weren't perfect when i got them, Pickering was/is best.

Fruit cocktail, Maha Chanok, cogshall, raw honey, pickering.


(https://i.postimg.cc/cKHynr7S/IMG-2930.jpg) (https://postimg.cc/cKHynr7S)

(https://i.postimg.cc/wRDSpJzh/IMG-2932.jpg) (https://postimg.cc/wRDSpJzh)

(https://i.postimg.cc/rKLB9hGg/IMG-2933.jpg) (https://postimg.cc/rKLB9hGg)

(https://i.postimg.cc/ZCF1srVm/IMG-2934.jpg) (https://postimg.cc/ZCF1srVm)

(https://i.postimg.cc/G9Y0G0DH/IMG-2936.jpg) (https://postimg.cc/G9Y0G0DH)

(https://i.postimg.cc/9Dms6rn7/IMG-2939.jpg) (https://postimg.cc/9Dms6rn7)

(https://i.postimg.cc/nX3Nppyw/IMG-2940.jpg) (https://postimg.cc/nX3Nppyw)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 29, 2020, 11:09:50 PM
Southern Ag's Liquid Copper (Is that what you used?) labeled rate for mangos is 4 teaspoons per gallon--- you used 6!  Registered pesticide labels are incorporated in pesticide law.  If you use registered pesticides, you must read and follow the label.

The Dawn probably increased the toxicity.  Dish detergents are often played with in home plant remedies, and sometimes actually work, such as when used in tiny amoiunts with cooking oil (which sometimes kills both the bugs and the leaves);  however, one doesn't normally recommend dish detergents mixed with registered pesticides, such as Liquid Copper.

For dissolving food-grade un-refined Neem Oil, such as Dyna-Gro Leaf Polish, you can use hot water with soy lecithin, and/or you can use hot water with Potassium Silicate fertilizer, of any brand, including Dyna-Gro Pro-TeKt.  Or you can use Dr. Bronner's Liquid Bath Soap (which is true Castille Soap made of Potassium Salts of Fatty Acids, not a detergent), which actually has on-line labelling for use on plants and is exempt from registration.  Any of these variations should probably be used as a separate spray--- I do not know if they would be compatible with Liquid Copper.

When you devise a new mix of your own, divide gallon rates by four to mix just one quart;  put it in a spray bottle and spray individual twigs or small branches with leaves and watch for several days to see if damage occurs.  Mark branches and note weather conditions and time of day.  If no damage occurs, then you have a candidate mix to use on larger areas, to then see if it actually does some good.



Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on December 30, 2020, 05:23:12 PM
Har, thank you.  No more dish soap & i'll force myself to do as you said & test different areas/mixes.
Yes southern ag copper i used (and many times over the yrs) but this time i over did it.
Also i'm thinking never mix copper & neem again.  Neem did its job coating leaves very well, so good i can't blast the copper/neem off. 
These mangos were the 1st i ever bought.  Another lesson learned is look real good for black spots & black stems/shoots before you buy.  Was slim pickings, both places told me due to covid, trees got bought up over the stay home thing.  Plus 2020 72" rain probably didn't help nursery anthracnose none.
I have chamomile tea, might try that on (just a few) leaves & soon to be buds on 20yr old tree tomorrow.

Spider mites looks to be next to tackle, noticed white sacks all over avocado i topped today next to old mango.  Squashed one with finger & looked like sack bled.  What's weapon of choice for that?

Thanks again.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 30, 2020, 08:37:00 PM
For mites in cool weather, spray Sulfur, or spray oil, two weeks apart--- don't mix.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on December 30, 2020, 10:10:38 PM
Edit- erased my late night babble.

Har, thanks again. 
I used 6 not 4 spoons mistakenly, confused it with another product.  I promise to read/follow labels here on out.
Learned mixing Neem with other products could be good but also bad news.  Can't rinse off if mistake.
Neem i'll think of as a sealer or wax.
I'll take new photos today, i have a hunch the leaves were in poor health before spray.
Pickering was in good health, got same spray & still looks great.

Got the sulfur powder, read label, will go play spider man shortly.
Thanks again.




Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on December 31, 2020, 10:24:07 PM
Windy day so instead of sulfur, i blasted mango trees, leaves, tiny buds with garden hose 3x.  Tried rubbing stems & some blackish buds with paint brush even!  Gave it my all.
Hopefully i'll do so good, they'll be lots of flowers or pea size mangos to remove.
1 ordered that soap.  Looks like great bath & shower soap for us humans.

(https://i.postimg.cc/kBg0qcgZ/IMG-2981.jpg) (https://postimg.cc/kBg0qcgZ)

(https://i.postimg.cc/JtqffgMZ/IMG-2984.jpg) (https://postimg.cc/JtqffgMZ)

(https://i.postimg.cc/fJq6L93b/IMG-2986.jpg) (https://postimg.cc/fJq6L93b)

(https://i.postimg.cc/8sN8nDQT/IMG-2988.jpg) (https://postimg.cc/8sN8nDQT)

(https://i.postimg.cc/D8NMF3DJ/IMG-2992.jpg) (https://postimg.cc/D8NMF3DJ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 31, 2020, 11:53:51 PM
Those blackish smudges on the twigs' bark are not anthracnose, and is generally considered harmless.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bovine421 on January 01, 2021, 12:02:08 AM
And what is this all about my Pickering has this going on all over it. My other trees just have a clear little bit of sticky business going on
(https://i.postimg.cc/Kks5mTLy/20201231-235147.jpg) (https://postimg.cc/Kks5mTLy)
By the by it sounds like happy New Year
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bovine421 on January 01, 2021, 11:26:16 AM
The Battle of sooty mold

Battle of Sooty mold was fought by my allies without any help from me.

I never knew there were so many varieties of wasp could not get photos of all of the varieties
(https://i.postimg.cc/t1LSTyrB/20210101-104729.jpg) (https://postimg.cc/t1LSTyrB)

(https://i.postimg.cc/LJ7KzcC1/20201219-140601.jpg) (https://postimg.cc/LJ7KzcC1)

(https://i.postimg.cc/G8x0YHTM/20210101-120713.jpg) (https://postimg.cc/G8x0YHTM)
After noticing so many wasp and varieties of wasp I decided to reevaluate I went and watch truly Tropicals video on sooty mold and decided the Nature Boy to just let nature run its course.
After a two-month hard-fought battle it looks like the scales a turn brown and have exit holes in them.
The only thing that I noticed missing from the battle was the usual ladybugs that visit me
(https://i.postimg.cc/8jpx6pH5/20210101-114416.jpg) (https://postimg.cc/8jpx6pH5)
Early in the battle I tried to clean to sooty mold but it was very tedious was still a little sticky
So I kind of gave up but now I noticed that as time is going on and it's dried out that the sooty mold is almost peeling off by itself and you can very easily take your fingernail and rub it off.

(https://i.postimg.cc/KR1rVCcf/20210101-104808.jpg) (https://postimg.cc/KR1rVCcf)

I do have neem oil and insecticide soap coming but I really don't think I will use them because it's attracting so many pollinators and this is  flowering season.


What do I do now coach >:( :(
Do not want scale infestation to magnify and multiply and spread to other trees
(https://i.postimg.cc/xXV8Mj5W/20210101-130152.jpg) (https://postimg.cc/xXV8Mj5W)

(https://i.postimg.cc/8FP1m76n/20210101-130141.jpg) (https://postimg.cc/8FP1m76n)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Seanny on January 01, 2021, 12:28:48 PM
Baby shampoo has a different wetting agent than dish soap.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 01, 2021, 01:11:28 PM
Bovine,
Sap flow in night shot is perhaps from a mechanical injury or bite, or from a deficiency of Copper.  Spray Copper.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bovine421 on January 01, 2021, 03:05:12 PM
I just noticed there's another battle going on the Battle of soursop I notice a lot of little dead looking scales then webs. I've also noticed them on the battle of sooty mold.
(https://i.postimg.cc/SjpTsRnw/20210101-145446.jpg) (https://postimg.cc/SjpTsRnw)
I will not show this to my wife she has arachnia phobia
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 04, 2021, 10:43:34 AM
Specific spray formula against Powdery Mildew, using Sulfur, Copper Soap, and Kelp.  Only good with spray equipment having a good motorized agitator.
At Truly Tropical.

https://www.youtube.com/watch?v=_bpK527Y8JQ (https://www.youtube.com/watch?v=_bpK527Y8JQ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on January 04, 2021, 11:17:26 AM
Thank you Har (and Chris) for another great informative video.  Timely too.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bovine421 on January 05, 2021, 06:46:04 AM
Update on the Battle of sooty mold
Over the weekend I observed that the WASP have lost interest in my honey kiss mango tree
Per your advice I purchased a half gallon pressure sprayer and concentrated bonide neem oil. I sprayed the underneath side thoroughly the trunk all branches then topside looking down
Honeykiss has shown no signs of pushing flowers even though in the month of December we only had a handful of days above 59 degrees at night. Neelam  is the only other hold out and that's all I'm going to say because of mangostition . :)
(https://i.postimg.cc/Lqn8wk6J/20210104-173937.jpg) (https://postimg.cc/Lqn8wk6J)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on January 05, 2021, 09:12:19 PM
Har, i viewed Chris' Jan 2020 blooms & fruitsets video.  Excellent, thank you all.

What did you learn & what will you (if any) try differently? 

Does watering effect fruit set?
Would nutrient drench effect fruit set?
Would a low pH vit c spray fight molds?
How low of a pH can leaves handle?

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Keysbob on January 06, 2021, 11:15:52 AM
Hi all.  I've been following this thread for a long time.  Lot's of very good info here so thanks to all for this Mango Culture 101 course.  My question is related to potassium bicarbonate.  I have used this with great success as a foliar prophylactic treatment for fungus and as a nutritional supplement in the past on my mango trees...but not during flowering.  Is there any harm in spraying K bicarbonate on mango inflorescences?   
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 06, 2021, 09:42:53 PM
Should be O.K. on emerging spikes, but I haven't used it on open flowers.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Keysbob on January 07, 2021, 08:12:25 AM
Thanks Har. I think I will try at 1/4 to 1/2 strength on a few flowering panicles. If I were a betting man, I would guess it will be no problem and could even be nutritionally beneficial. We shall see.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on January 12, 2021, 04:34:47 PM
Happy to see these starting & look realitively clean for dense privacy hedge & my guess Kent.
Is it ok to continue copper on all but the longest ones?  I switched to little squirt bottle so i can selectively spray.

Thanks as always,
Ed


(https://i.postimg.cc/vgbbPP3W/IMG-3188.jpg) (https://postimg.cc/vgbbPP3W)

(https://i.postimg.cc/t7R9WM1b/IMG-3192.jpg) (https://postimg.cc/t7R9WM1b)

(https://i.postimg.cc/CnKY0Ry5/IMG-3193.jpg) (https://postimg.cc/CnKY0Ry5)

(https://i.postimg.cc/3WLYBFpv/IMG-3194.jpg) (https://postimg.cc/3WLYBFpv)

(https://i.postimg.cc/1f2PxRvR/IMG-3201.jpg) (https://postimg.cc/1f2PxRvR)

(https://i.postimg.cc/r0fXfqdk/IMG-3206.jpg) (https://postimg.cc/r0fXfqdk)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 12, 2021, 04:43:49 PM
All pictured spikes are still sprayable with Copper.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on January 12, 2021, 05:15:46 PM
Thank you Har, trying my hardest this yr.  I'm gaining weight watching your great tasting table videos.  Inspirational.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on January 12, 2021, 10:02:36 PM
Continue copper as needed till flower(s) open...

switch to sulfur on open flowers to protect,

pea or bb size mangos resume copper & nutrition.

Sound good?  I've been watering almost daily since i tossed a few lbs of fert & some calcium & potassium.
I cut at least 10 garbage pails off that tree every year.  Been double that height 10yrs ago.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JulianoGS on January 14, 2021, 06:21:24 PM
What could this be in my mango leaf? Some have it, others dont.

(https://i.postimg.cc/jDmgVPxZ/20210114-163927.jpg) (https://postimg.cc/jDmgVPxZ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 14, 2021, 07:42:10 PM
Eddie F., Have you seen a recommendation to spray Sulfur on Open Bloom?  I don't remember if I have tried that.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on January 14, 2021, 08:09:11 PM
Har, i thought i saw a video (not yours) that suggested it but, i've almost killed bananas doing what i read in reviews (not here) as well.  If you don't spray blooms with sulfur, i surely won't.
Powdery mildew hits this tree hard every year.  I'll do whatever you suggest.  Tree's looking very good preparing for bloom now that i'm staying on it with copper, 3 not 4 tsp.  Hoping i won't get tree in trouble using weaker more often.  I don't mind, easy enough.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 15, 2021, 03:14:41 PM
I certainly do spray Bloom Spikes with Sulfur, but one has to be very careful with fully open flowers.  If you try on just a few and they look good a few hours or a day later, and then set fruit, then you know your mix was a good one to use.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on January 15, 2021, 08:00:20 PM
Thanks Har good to know & i will.  I sprayed copper yesterday (1oz on that whole tree) which was 1 tsp/gallon shy of spec which seems strong enough.  No flowers yet.

How many days should i plan to wait before switching from copper to sulfur? 
And when is latest i should apply sulfur?  My guess soon as flowers begin to open to avoid hurting pollen.
I take it my job is to have sulfur on pentacles right before bloom so the sulfur protects hopefully till fruit sets.

Thanks again, i'm sure others are gaining knowledge from this. 
I really do love these mangos.  Drops are all i ever eat, my favorite.  I get out early & check ground for them before ants do heh.  It's the perfect ripeness.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on January 16, 2021, 06:08:12 PM
Photos today.  Mixed copper but too windy to spray.  Panicles not shown have black spots & see it on buds too.  Should i hit it with copper 1 more time or switch to sulfur?  Thank you.

South east side has the action.

(https://i.postimg.cc/D8YjKbgS/IMG-3285.jpg) (https://postimg.cc/D8YjKbgS)

(https://i.postimg.cc/21bHj8c2/IMG-3272.jpg) (https://postimg.cc/21bHj8c2)

(https://i.postimg.cc/FdZpCfzs/IMG-3271.jpg) (https://postimg.cc/FdZpCfzs)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 16, 2021, 09:41:55 PM
Copper.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JulianoGS on January 20, 2021, 03:02:34 PM
What could this be in my mango leaf? Some have it, others dont.

(https://i.postimg.cc/jDmgVPxZ/20210114-163927.jpg) (https://postimg.cc/jDmgVPxZ)

Please, can someone guide me in the right direction with my mango tree?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 20, 2021, 07:14:06 PM
Probably the leaf form of Mango Bacterial Leaf Spot.  Spraying with Copper will slow the spread of the infection.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on January 21, 2021, 10:30:38 PM
Update-

So far so good, copper whole tree 1oz or less, every few days it seems.
Panicles are facing east south east.
Anthracnose on dark north side been there 10yrs, i personally enjoy privacy just as much there.

Thank you Har.

(https://i.postimg.cc/QVbYZhdC/IMG-0012.jpg) (https://postimg.cc/QVbYZhdC)

(https://i.postimg.cc/0z6VSSdK/IMG-0013.jpg) (https://postimg.cc/0z6VSSdK)

(https://i.postimg.cc/YvJbzSbn/IMG-0014.jpg) (https://postimg.cc/YvJbzSbn)

(https://i.postimg.cc/fJR2wpVK/IMG-0015.jpg) (https://postimg.cc/fJR2wpVK)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Lightman on January 22, 2021, 05:15:52 PM
Hey all, first post in here as I finally got some mango trees! Two weeks ago I drove over to West Palm and picked up several trees which I hauled back in an enclosed trailer. All are 25 gallon size trees aside from one 15. Two Maha Chanok, two orange sherbet, a lemon zest, a NDM4, a VP, and an Edward were our choices based on having tasted and liked all of these several times. we are not ready with our yard yet to plant them in the ground so they are going to stay in containers probably until mid-summer. They are getting full sun now. Straddling 9b/10a in Sarasota. Some of them look great, some of them look a little pale and droopy. Hopefully over the course of the next couple weeks with the help of this forum I can get up to speed on a proper spraying and feeding regimen. I've watched as many truly tropical videos as I can and have been researching and trying to absorb as much as I can.
Lets start with my Orange Sherbet - it has several burnt or dead looking leaf tips and some of the older lower leaves look a little pale. I have not fed or sprayed anything yet on this tree, just gave it water once after transport as the soil felt bone dry as far as my fingers could reach. If any of you folks could offer some advice on what deficiencies I might have, and a proper feeding/spraying/watering regimen for this time of year and stage in the plant's life that would be fantastic!
(https://i.postimg.cc/LYSTJfvn/IMG-20210122-164800211.jpg) (https://postimg.cc/LYSTJfvn)

(https://i.postimg.cc/5Yk6hWHb/IMG-20210122-164857151.jpg) (https://postimg.cc/5Yk6hWHb)

(https://i.postimg.cc/87VjQHCJ/IMG-20210122-164957249.jpg) (https://postimg.cc/87VjQHCJ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 22, 2021, 10:30:47 PM
Your trees look fine.  Those bottom leaves are at the end of their lives.  Only recognizable symptom on those older leaves is Manganese deficiency, but what they have, including Nitrogen, is being pulled out to re-use elsewhere.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Lightman on January 23, 2021, 11:18:12 AM
Thank you, Har, that is reassuring.  Being that this is in a container, what do you recommend as far as watering this time of year?
Especially in containers, there doesn't seem to be a lot of consistent information I can find about proper feeding and or spraying regimens for the winter. Some people say  dont water, feed, or do anything...but especially in a container that feels risky to me. My goal is to have a healthy tree that is ready to go in the ground this summer... I'm not really concerned about fruit. What's the right approach?

Your trees look fine.  Those bottom leaves are at the end of their lives.  Only recognizable symptom on those older leaves is Manganese, but what they have, including Nitrogen, is being pulled out to re-use elsewhere.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 23, 2021, 10:53:57 PM
Water containers every couple of days in Winter, unless the soil is still wet looking.  Dailly when warm and windy.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on January 26, 2021, 09:28:52 AM
Been a few days since copper.  Wondering if it's sulfur time for panicles while i selectively spray copper on north side with anthracnose & buds that haven't started panicles yet.
I also have kelp, would a drench or foliar be benificial now?

Thank you,
Ed

(https://i.postimg.cc/CdjzK5NV/IMG-0071.jpg) (https://postimg.cc/CdjzK5NV)

(https://i.postimg.cc/hXVCy985/IMG-3430.png) (https://postimg.cc/hXVCy985)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 26, 2021, 06:51:10 PM
All good ideas.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Andika on January 31, 2021, 12:26:46 PM
Someone on another forum asked what was wrong with their mango seedling, can you help her?
(https://i.postimg.cc/FdqYq2hd/beteg-mango.jpg) (https://postimg.cc/FdqYq2hd)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 31, 2021, 10:19:53 PM
Cut top off, down to where the plant is clean.  Don't use compost or high-nitrogen fertilizer.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Andika on February 01, 2021, 03:47:37 AM
Cut top off, down to where the plant is clean.  Don't use compost or high-nitrogen fertilizer.

Thanks! So is this not a disease but overfeeding?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 01, 2021, 01:48:40 PM
Over-feeding Nitrogen increases susceptibility to pests and disease.

After pruning, spray several times with insecticidal soap, and separate times with Copper.  Follow label instructions.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Andika on February 02, 2021, 05:52:23 AM
Over-feeding Nitrogen increases susceptibility to pests and disease.

After pruning, spray several times with insecticidal soap, and separate times with Copper.  Follow label instructions.

OK, thank you very much!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on February 05, 2021, 08:13:49 PM
Photos today.
I haven't sprayed sulfur yet cause they look so pretty.
Since last post, i did a little kelp drench (no foliar) and sprayed non bloom areas with copper.
Am i asking for trouble not spraying sulfur on blooms?  Thank you.


(https://i.postimg.cc/dhkCmg3k/m1.jpg) (https://postimg.cc/dhkCmg3k)

(https://i.postimg.cc/ygBSKdPc/m10.jpg) (https://postimg.cc/ygBSKdPc)

(https://i.postimg.cc/F1TJthJk/m11.jpg) (https://postimg.cc/F1TJthJk)

(https://i.postimg.cc/D8YsG7v3/m2.jpg) (https://postimg.cc/D8YsG7v3)

(https://i.postimg.cc/WdBk9Sq9/m3.jpg) (https://postimg.cc/WdBk9Sq9)

(https://i.postimg.cc/4KphjtzX/m4.jpg) (https://postimg.cc/4KphjtzX)

(https://i.postimg.cc/wRjytGnB/m5.jpg) (https://postimg.cc/wRjytGnB)

(https://i.postimg.cc/wyVRjpfP/m6.jpg) (https://postimg.cc/wyVRjpfP)

(https://i.postimg.cc/fkz0gVkh/m7.jpg) (https://postimg.cc/fkz0gVkh)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: weiss613 on February 05, 2021, 09:59:30 PM
Get yourself a moisture reader so you’ll know exactly when to water.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bob_tu on February 12, 2021, 04:54:26 PM
Hey everyone first time posting in this thread. So just got this plant in the mail minutes ago and was wondering what these black spots are on on my Coconut Cream. Im looking back through the thread and i assume its anthracnose or black spot, duh? How would i go about treating this? Thanks

(https://i.postimg.cc/WFTYKKgn/20210212-MP2.jpg) (https://postimg.cc/WFTYKKgn)

(https://i.postimg.cc/t1hmByZJ/20210212-MP5.jpg) (https://postimg.cc/t1hmByZJ)

(https://i.postimg.cc/SJf61sVw/20210212-2-MP.jpg) (https://postimg.cc/SJf61sVw)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rainking430 on February 12, 2021, 10:13:59 PM
Unfortunately I have some mango trees that are pretty susceptible to anthracnose. I want to use Organocide Plant Doctor this year due to the systemic action, as well as its ability to fertilize the tree and encourage more blooms, if I am reading it right. The trees are just starting to bud where the panicles will be, however the instructions say to spray during the blossom period. Would there be any benefit or harm to start spraying them now? I want to give them a good head start if I can. I emailed the company about a week ago and haven't heard back. Thanks!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 13, 2021, 09:26:32 AM
Your trees ARE in the blossom period.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rainking430 on February 13, 2021, 10:01:28 PM

Your trees ARE in the blossom period.


Thanks for clarifying Har, I thought that meant when the panicles were actually mature and the blooms were visible rather than the green buds that are just starting to come out on my trees (they seem a bit late this year). I will get spraying then. Thank you.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Corey_Mango on February 15, 2021, 01:09:11 PM
Hey everyone! I just picked up this coconut cream from TT two weeks ago. Has about 12 small fruit on it. Most of which will probably fall though I do hope it holds some. The leaves have black spots and it since I got it home they seem to be getting worse. I have a few other mango trees that look clean and would like to get this one looking the same. I haven’t put it in the ground yet because I don’t want to shock it and have the hopes of some fruit fall to the ground. Please let me know if this is anthracnose or black spot or what? And what to do. Thanks!


(https://i.postimg.cc/WFH0pRK1/0-A610486-F547-4-B6-F-A5-F7-537-B641-D5-FFE.jpg) (https://postimg.cc/WFH0pRK1)

(https://i.postimg.cc/QHpKwWXt/427-D801-D-7149-48-CB-A2-DE-A51716-DE102-E.jpg) (https://postimg.cc/QHpKwWXt)

(https://i.postimg.cc/kVCcLm3r/43-DC804-F-88-A5-4-C6-A-B7-FC-0252-BCCF55-E1.jpg) (https://postimg.cc/kVCcLm3r)

(https://i.postimg.cc/2qX1hQxH/9-B7463-D2-9-BE5-42-CB-B18-E-700589-A8584-F.jpg) (https://postimg.cc/2qX1hQxH)

(https://i.postimg.cc/rDj0FXR2/A72-F3-DE2-A545-46-D6-B2-CC-956-E22-E582-B0.jpg) (https://postimg.cc/rDj0FXR2)

(https://i.postimg.cc/1nnfH8Cy/B44-F27-B4-BF0-E-416-D-8-B07-3-B09-BBD4-E48-A.jpg) (https://postimg.cc/1nnfH8Cy)

(https://i.postimg.cc/3ywykS24/E14-E2692-2-B52-4-E5-F-93-B8-7-EC1-EB2-F6850.jpg) (https://postimg.cc/3ywykS24)

(https://i.postimg.cc/WqqghWL6/E24-CE1-F2-1629-43-AE-B2-EF-F9901-A3711-DB.jpg) (https://postimg.cc/WqqghWL6)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 15, 2021, 03:30:09 PM
Spray with A Copper product.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Corey_Mango on February 15, 2021, 03:37:04 PM
Thanks Har. How many times how often? Is there something else other than copper? I read it can harm the good bugs. I can bring this plant out into the street to spray because it is still in the pot if I had to I guess. Thanks!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Corey_Mango on February 15, 2021, 07:09:35 PM
Har is this anthracnose or mango bacterial black spot? What’s the difference?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 15, 2021, 08:38:34 PM
Follow label.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on February 15, 2021, 08:39:42 PM
Har is this anthracnose or mango bacterial black spot? What’s the difference?

One is a fungal disease and one is bacterial.  Let Google be your friend...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on February 19, 2021, 11:34:02 AM
One of my trees is pushing out panicles that have a "sooty" blackish tint to them, see below. All the panicles on the tree look similar to this (even when just emerging), but the Sweet tart at the same stage of panicles right next to it (within a foot or so of each other's branches on one side) is clean with no soot whatsoever (second pic). The parent tree I took the scions from had a very similar look at it's earlier stage of budding, but is loaded with healthy flowers now. Is this an issue that needs correcting?
(https://i.postimg.cc/9RJ4vdfc/q95g36se.png) (https://postimg.cc/9RJ4vdfc)

(https://i.postimg.cc/Y4xjW6YQ/cief3wum.png) (https://postimg.cc/Y4xjW6YQ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 19, 2021, 03:45:19 PM
Probably fine.  Different varieties have flowers of different colorations. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on February 20, 2021, 05:33:38 AM
That's a relief to read, thanks Har.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Julie on February 20, 2021, 11:05:18 AM

(https://i.postimg.cc/21HZT9sH/3232-BD5-C-5-B6-A-4788-9-E28-58846434-C30-C.jpg) (https://postimg.cc/21HZT9sH)

This is my Carrie mango. Is this classic iron deficiency? I live in Miami where there is a limestone bedrock. Is it necessary to apply multiple chelated iron soil drenches per year or should I just treat it as needed?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Julie on February 20, 2021, 11:29:56 AM
This is my orange sherbet mango.
(https://i.postimg.cc/PvpMWsVn/2-BCA5850-D6-DD-4-F0-A-A8-E9-6394-C39061-B9.jpg) (https://postimg.cc/PvpMWsVn)

There is some black spot on the new growth

(https://i.postimg.cc/RWrgThzs/E419171-D-19-C4-4261-9-C26-D3-C3043-CE211.jpg) (https://postimg.cc/RWrgThzs)

I also found these small flies on the undersides of all the leaves
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Julie on February 20, 2021, 11:38:08 AM
This is my cogshall mango, it has black spots primarily on the undersides of the leaves


(https://i.postimg.cc/JG8qyg3v/E63-FDDB1-D915-4-CF8-8-EE0-B015-FCE85-B1-E.jpg) (https://postimg.cc/JG8qyg3v)

(https://i.postimg.cc/5YF3vWRd/F9257-F31-8-C43-47-FA-8-AE5-69674-B580463.jpg) (https://postimg.cc/5YF3vWRd)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Julie on February 20, 2021, 11:42:48 AM

(https://i.postimg.cc/62GkQSVT/B273-F93-B-CE0-A-4-E4-B-8-BF3-2107444-F3-C04.jpg) (https://postimg.cc/62GkQSVT)

(https://i.postimg.cc/HJKGdHyf/EDAFC1-EE-0-BAA-423-C-AFDD-446-A6-B622679.jpg) (https://postimg.cc/HJKGdHyf)

This is my Pickering mango. There are black spots on the leaves more so on that he undersides.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Honest Abe on February 20, 2021, 07:41:01 PM
Jake fruit, like Har said, as an example, my “Keitt” had the same dark tint on all
Blooms and is totally healthy now and setting a bunch of pea size mangos.

Har, I continue to thoroughly enjoy reading your vast knowledge this thread.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 20, 2021, 08:13:15 PM
Julie,
Yes, your Carrie probably is also deficient in Iron, but I believe that the color-pattern refers more to Manganese deficiency.

Your Orange Sherbet's new growth looks deficient in Zinc and Sulfur.

Often these undesireable colors show up from root inefficiencies during cold and drought.

I usually treat with multiple chelated micro-nutrients, rather than single-element treatments.

The various tiny spots on the leaves are less important.  They tend to get less frequent when the trees' nutrition is improved.

I don't know from fly identification.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Julie on February 20, 2021, 08:50:51 PM
Thank you so much Har for responding I really appreciate it. Do you know of any organic products you could recommend for mango nutrition? I’ve seen your YouTube video where you recommend K Mag so I will get that, do you have any products you could recommend for iron and other nutrients mangoes need?

I’ve been able to find chelated iron and chelated manganese from Albion Organics and I’m considering azomite and kelp meal for the micronutrients but I have no experience with this and don’t want to hurt my trees.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 20, 2021, 09:48:26 PM
Those products are good.  Add to those chelated Zinc, and Epsom Salt.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: K-Rimes on February 21, 2021, 01:31:08 PM

(https://i.postimg.cc/BPvCBHzp/5-B8097-CD-DA79-4-A70-BB92-894-E426-EADDC.jpg) (https://postimg.cc/BPvCBHzp)

Looks like the Black Death to me. All other potted mangoes I’ve had have met the same fate. Any thoughts or is it a goner? I’ve tried copper fungicide, serenade, etc no help. Is it possible to lop the top off and the bottom will re grow? It is still moderately healthy below.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 21, 2021, 05:32:21 PM
That looks typical of mangos planted in rich black soil and over-watered.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on February 21, 2021, 07:24:19 PM

(https://i.postimg.cc/BPvCBHzp/5-B8097-CD-DA79-4-A70-BB92-894-E426-EADDC.jpg) (https://postimg.cc/BPvCBHzp)

Looks like the Black Death to me. All other potted mangoes I’ve had have met the same fate. Any thoughts or is it a goner? I’ve tried copper fungicide, serenade, etc no help. Is it possible to lop the top off and the bottom will re grow? It is still moderately healthy below.

Is that in a pot?  Purchased from Florida?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: K-Rimes on February 22, 2021, 05:43:28 PM
That looks typical of mangos planted in rich black soil and over-watered.

I fixed this about a year ago. It is planted in about 70% sand, 10% pumice and 20% black soil. It was doing fabulously till a week ago.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: K-Rimes on February 22, 2021, 05:45:15 PM

(https://i.postimg.cc/BPvCBHzp/5-B8097-CD-DA79-4-A70-BB92-894-E426-EADDC.jpg) (https://postimg.cc/BPvCBHzp)

Looks like the Black Death to me. All other potted mangoes I’ve had have met the same fate. Any thoughts or is it a goner? I’ve tried copper fungicide, serenade, etc no help. Is it possible to lop the top off and the bottom will re grow? It is still moderately healthy below.

Is that in a pot?  Purchased from Florida?

It is in a 25 gallon pot 70% sand, 20% black soil, 10% pumice. It is a grafted Florida plant but had been living in CA problem free for a year. I thought my greenhouse would save me this winter but evidently not. Interestingly, it survived better without it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: sapote on February 22, 2021, 06:17:38 PM
Looks like the Black Death to me. All other potted mangoes I’ve had have met the same fate. Any thoughts or is it a goner? I’ve tried copper fungicide, serenade, etc no help. Is it possible to lop the top off and the bottom will re grow? It is still moderately healthy below.

Cut the brown wood (dark brown or black stain inside the woody part) off until get the the healthy wood. The remain trunk will grow out. Grafted mango plants from FL have this issue in California. I suggest to grow from seedling then graft after it bear fruits.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: K-Rimes on February 23, 2021, 02:51:09 PM
Looks like the Black Death to me. All other potted mangoes I’ve had have met the same fate. Any thoughts or is it a goner? I’ve tried copper fungicide, serenade, etc no help. Is it possible to lop the top off and the bottom will re grow? It is still moderately healthy below.

Cut the brown wood (dark brown or black stain inside the woody part) off until get the the healthy wood. The remain trunk will grow out. Grafted mango plants from FL have this issue in California. I suggest to grow from seedling then graft after it bear fruits.

I bought this one before finding out about the seedling thing - have Florida seedlings a plenty now, all growing happy in the sand based soils. I chopped right back. Sad, but kinda had to.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitGrower on February 28, 2021, 05:46:29 PM
This is one I haven’t seen before.
I had a 15 gal “Alampur Baneshan” mango that started showing symptoms of “Black Death” referenced above. The tree had just flowered so I wanted to try to avoid cutting it back so I sprayed and drenched it with sulfur instead. I
(https://i.postimg.cc/PP81Hrqw/2-E20-EB9-E-AD6-A-4985-9199-94-F47-AD6-EAA9.jpg) (https://postimg.cc/PP81Hrqw)

(https://i.postimg.cc/Dm0qCck5/39017335-36-C6-497-C-AAD8-B0072-B6-BAA40.jpg) (https://postimg.cc/Dm0qCck5)

(https://i.postimg.cc/t7cF8V9b/F6-DC2990-D5-F8-4684-9-E72-0-ACD5-FB959-C5.jpg) (https://postimg.cc/t7cF8V9b)

A few days later, it was clear that the sulfur wasn’t effective as the flowers were now wilting and the black area had spread to other branches. I did what I should have done initially and cut back the tree until there was no black visible, which only left me with a couple of inches above the graft. 

(https://i.postimg.cc/VdBLn3Gh/5-D7-B254-F-5-E11-4410-A15-A-267354-A66008.jpg) (https://postimg.cc/VdBLn3Gh)

(https://i.postimg.cc/TpX3yR9m/91-A0-A7-F1-57-C0-44-DF-877-F-B17995043581.jpg) (https://postimg.cc/TpX3yR9m)

(https://i.postimg.cc/FYTrn0Qg/9-AB622-EF-830-D-45-A9-BCAC-A7-F9-F87817-F8.jpg) (https://postimg.cc/FYTrn0Qg)


(https://i.postimg.cc/bZw8bd2G/80-CBD1-C1-B8-D5-4-EA2-B9-E1-780861-F5-E88-A.jpg) (https://postimg.cc/bZw8bd2G)

I removed it from the pot to check its roots and to my surprise, I didn’t find a soggy mess. Instead, what I found was that the medium that was used when it was up-potted from a 7 to a 15 gallon, had been colonized by mycelium, creating a hard outer layer that the roots were not growing into (there were a few roots that got through, but not fibrous). I removed the encrusted outer layer and got down to healthy roots, which brought me back to a 7-gallon size rootball, and I planted it.



Has anyone ever seen this before? I’m guessing the roots were deprived of oxygen by being encased in that mycelium but I had always heard that it’s beneficial to roots, thoughts?
I have some citrus that needs to be potted up, would you use that mycelium-colonized medium (looks like pine bark and sawdust) at a diluted ratio, or should I just spread it like mulch over an in-ground tree?
(https://i.postimg.cc/3dRDBXV7/028-F1-B26-51-AF-4820-9-D76-80-E207-CCE95-D.jpg) (https://postimg.cc/3dRDBXV7)

(https://i.postimg.cc/ThQDg7kC/D288-F61-D-AF1-C-4-E73-BED9-6-F744-E4038-E3.jpg) (https://postimg.cc/ThQDg7kC)

(https://i.postimg.cc/XBNBtdvf/ED6-FD651-937-F-4-B22-851-D-947464-B238-E0.jpg) (https://postimg.cc/XBNBtdvf)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 01, 2021, 09:57:14 AM
We don't worry much about black sooty mold on the OUTSIDE of branches and trunks--- spray oil or insecticidal soap or BioWash or Copper sprays keep that in check or even clean it up.

Was the underbark and wood INSIDE your tree's main trunk discolored?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitGrower on March 01, 2021, 10:48:53 AM
We don't worry much about black sooty mold on the OUTSIDE of branches and trunks--- spray oil or insecticidal soap or BioWash or Copper sprays keep that in check or even clean it up.

Was the underbark and wood INSIDE your tree's main trunk discolored?

To my eye, yes, there was discoloration inside the trunk almost to the graft line. You can see it in the pictures of the branches above. It was less discolored as I went lower on the trunk.  Here’s some better pictures:

(https://i.postimg.cc/KKk0HFvr/2-F51-A229-9130-4-E16-8-C6-F-1-DF7-CD5-B5699.jpg) (https://postimg.cc/KKk0HFvr)

(https://i.postimg.cc/Z9GwkgWk/B35-D738-E-9096-4594-8089-1632531-CE1-BE.jpg) (https://postimg.cc/Z9GwkgWk)

(https://i.postimg.cc/JGMd49PM/CD7397-D1-4-E11-4-BBF-8-CAB-1970658-E5401.jpg) (https://postimg.cc/JGMd49PM)

(https://i.postimg.cc/qNZmwg0v/F2-D789-DC-614-C-400-F-9-F30-1-D330-B1361-BF.jpg) (https://postimg.cc/qNZmwg0v)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Oncorhynchus on March 01, 2021, 02:25:38 PM
Can anyone tell me what is going on with the Fruit Punch flowers? They seem to be curling or growing at an angle.
(https://i.postimg.cc/5jBsmvRN/83-B21366-7-DEB-448-E-8-C3-E-60-E824-C58137.jpg) (https://postimg.cc/5jBsmvRN)

(https://i.postimg.cc/4mXB2dDv/C8-C9-C108-7-B30-49-CA-BC7-E-2-A09-FC155-EAD.jpg) (https://postimg.cc/4mXB2dDv)

(https://i.postimg.cc/ZCjjGmmG/F5-F09437-5-C13-4-F64-8616-6-E2-FCE7889-BE.jpg) (https://postimg.cc/ZCjjGmmG)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hawkfish007 on March 02, 2021, 10:56:33 AM
We don't worry much about black sooty mold on the OUTSIDE of branches and trunks--- spray oil or insecticidal soap or BioWash or Copper sprays keep that in check or even clean it up.

Was the underbark and wood INSIDE your tree's main trunk discolored?

To my eye, yes, there was discoloration inside the trunk almost to the graft line. You can see it in the pictures of the branches above. It was less discolored as I went lower on the trunk.  Here’s some better pictures:


I thought black death, underbark discoloration and ultimate demise of mango trees are limited to SoCal. I lost quite a few trees  when I started planting mangoes to these symptoms, I tried abound, regalia, copper etc., but none worked once a mango started to dry up from the top. At the beginning I used rich black soil when planting, now I switched to native soil and sand. But I still loose one or two young mangoes here and there. I would like to know the real reason behind these symptoms. Most folks here in SoCal blame the rootstock, but it can't be true because I lost mangoes on Manilla and Corrientes as well.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 02, 2021, 12:43:00 PM
FruitGrower,
You were right about the discoloration.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 02, 2021, 12:47:24 PM
Oncorhynchus,
Those do look a little odd, but not likely a problem.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitGrower on March 02, 2021, 06:04:54 PM
FruitGrower,
You were right about the discoloration.

Thank you Har!!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitGrower on March 02, 2021, 11:23:09 PM
We don't worry much about black sooty mold on the OUTSIDE of branches and trunks--- spray oil or insecticidal soap or BioWash or Copper sprays keep that in check or even clean it up.

Was the underbark and wood INSIDE your tree's main trunk discolored?

To my eye, yes, there was discoloration inside the trunk almost to the graft line. You can see it in the pictures of the branches above. It was less discolored as I went lower on the trunk.  Here’s some better pictures:


I thought black death, underbark discoloration and ultimate demise of mango trees are limited to SoCal. I lost quite a few trees  when I started planting mangoes to these symptoms, I tried abound, regalia, copper etc., but none worked once a mango started to dry up from the top. At the beginning I used rich black soil when planting, now I switched to native soil and sand. But I still loose one or two young mangoes here and there. I would like to know the real reason behind these symptoms. Most folks here in SoCal blame the rootstock, but it can't be true because I lost mangoes on Manilla and Corrientes as well.

When I started growing I lost several mangos in the winter with these same symptoms. Those were potted plants in regular potting soil (mostly peat moss) and were likely over-watered. I always assumed that this combination of factors resulted in an overly-saturated medium that was devoid of oxygen. This was why I was surprised when I didn’t see that in my potted “Alampur Baneshan “ referenced above.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 03, 2021, 04:52:39 PM
The tender new growth going into a severe wilt like that may have been from volatilization of the Sulfur sprayed on them, when the leaf-surface temperature was over 85-degrees Fahrenheit, in the next three days after spraying.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitGrower on March 05, 2021, 02:06:13 PM

(https://i.postimg.cc/YGwcG1gW/632309-C8-9-FFE-4-E19-852-C-ABFFD45-C8-AEB.jpg) (https://postimg.cc/YGwcG1gW)

(https://i.postimg.cc/3dfPCMm7/F0146296-8245-4-C78-BAF9-67-B0-E90-E8-F2-E.jpg) (https://postimg.cc/3dfPCMm7)

(https://i.postimg.cc/RN2gZvw3/18248-F43-9-EAE-4-DB6-AE00-C04-C87-CC5868.jpg) (https://postimg.cc/RN2gZvw3)

(https://i.postimg.cc/MvLFf7Jp/3-D574-EF5-EB88-476-A-B353-F870-B91-C9-FA6.jpg) (https://postimg.cc/MvLFf7Jp)

I have a CAC that is about 1 year in ground from 15 gal and currently holding some small fruit. I noticed this damage on the trunk yesterday. I know the conventional wisdom is to cut the tree to below the damage but in this case, the damage goes to only an inch above the graft line. A couple of questions:

1) would it be possible that the tree outgrows this damage without any adverse effects in the future?
) if the answer to the above is no and I have to cut, can I wait till after the fruit come off the tree or is it something I should do right away?

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Orkine on March 05, 2021, 07:16:42 PM
The damage I had was from a rabbit gnawing away at the stem,  I tried multiple things but the tree in the end covered the wound by itself.  Would have had the same outcome had I just cleaned it and let it be.
In my research though I came across Bridge Grafting (this was not the video I saw but a quick search yielded this which was similar to my situation https://www.youtube.com/watch?v=HyK2XVQDTlE (https://www.youtube.com/watch?v=HyK2XVQDTlE))

I tried a bridge graft which failed but I cleaned the wound before making the graft and over time the tree closed the wound.  It is today a fine looking tree.

You may want to take a graft a branch in case you lose the tree eventually.  You may also want to clean off the damaged material and if you can try a bridge graft similar to what the video shows.  Even if the graft does not work like mine didn't, the tree may take care of itself over time.

Good luck.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitGrower on March 05, 2021, 07:49:00 PM
Thankfully I do have it grafted somewhere else and I also have another tree, so the variety should be safe. I think I am going to wait and keep a close eye on it. If it worsens, I will cut, if not, I will let it hold fruit to maturity (if it can) and then cut. Thanks for the feedback!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Orkine on March 06, 2021, 12:44:52 AM
you might want to remove the dead wood and get to some clean bark
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitGrower on March 06, 2021, 02:02:33 AM
you might want to remove the dead wood and get to some clean bark

I will do that, thank you.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitGrower on March 06, 2021, 07:42:33 PM

(https://i.postimg.cc/30kQ2xfz/FD510-D7-A-9517-4-C75-9-CE6-C051607-C3818.jpg) (https://postimg.cc/30kQ2xfz)

Here it is cleaned up. I’ll update the outcome for the benefit of others when o get the fruit.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 07, 2021, 09:17:56 PM
Weed-Eater damage.  Whenever you spray Copper, spray that old wound too.  I expect the tree to eventually cover it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitGrower on March 07, 2021, 09:54:13 PM
Weed-Eater damage.  Whenever you spray Copper, spray that old wound too.  I expect the tree to eventually cover it.

Thank you.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Lightman on March 15, 2021, 12:01:59 PM
My leaves seem to be developing a reddish color in spots, and don't seem super healthy. They also have a dusty powder on the leave. I have hesitated to fertilize or spray because the flowers are open. Any advice appreciated!

(https://i.postimg.cc/vg7sJJ0T/IMG-20210315-114410535.jpg) (https://postimg.cc/vg7sJJ0T)

(https://i.postimg.cc/4mDWcYfC/IMG-20210315-114424771-HDR.jpg) (https://postimg.cc/4mDWcYfC)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 16, 2021, 11:27:09 PM
Lightman,

Damage from mites.  Happens nearly every Spring, during dry weather.  Give them artificially wet weather, with a garden hose nozzle, from below, and from above.

Edited:  Do above 3 times a week, until problem subsides.  Or use pesticides labelled for mites on fruit trees.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Lightman on March 17, 2021, 08:49:56 AM
Thank you !!

Lightman,

Damage from mites.  Happens nearly every Spring, during dry weather.  Give them artificially wet weather, with a garden hose nozzle, from below, and from above.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Lightman on March 18, 2021, 09:38:07 AM
Har, I gave it a little rinse yesterday and the leaves seem a bit cleaner. However, I did notice a few on the ground yesterday and today I looked at the tree and half of the flowers have blown off the panicles and they look bare!  We've had some wins lately but nothing crazy. What do you suspect would cause this? Any suggestions?

Lightman,

Damage from mites.  Happens nearly every Spring, during dry weather.  Give them artificially wet weather, with a garden hose nozzle, from below, and from above.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 18, 2021, 10:29:32 AM
Always most flowers fall, as it is impossible to have 300 fruits on one panicle.  The question is, "Are there a few tiny fruit sets on each pannicle?"
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Lightman on March 18, 2021, 10:24:31 PM
Unfortunately no, not like my other trees that progress from new flowers to open flowers to pollinated flowers where everything dies off and fruit set remains. Furthermore, it looks even worse today!
Always most flowers fall, as it is impossible to have 300 fruits on one panicle.  The question is, "Are there a few tiny fruit sets on each pannicle?"
(https://i.postimg.cc/kDXhm783/IMG-20210318-184915346-MP.jpg) (https://postimg.cc/kDXhm783)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 18, 2021, 10:31:25 PM
If you have a sprayer with an agitator, or if you shake a small sprayer while you spray, you can spray the mites with horticultural spray oil, or with neem oil.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: strkpr00 on March 22, 2021, 09:56:26 AM
My Florigon  and Chocanon has this on quite a few flushes
(https://i.postimg.cc/KRvddWzp/20210320-105800.jpg) (https://postimg.cc/KRvddWzp)

(https://i.postimg.cc/sv6tyJGj/20210320-105807.jpg) (https://postimg.cc/sv6tyJGj)

(https://i.postimg.cc/s1Rz0K7b/20210320-110115.jpg) (https://postimg.cc/s1Rz0K7b)
Thinking of eliminating the new growth.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 22, 2021, 10:07:01 AM
Powdery Mildew.  Removal of new growth will be unnecessarily extreme, unless you are also wanting to do size-control pruning.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: strkpr00 on March 22, 2021, 11:09:36 AM
Thanks Har. They seem to be somewhat aggresive growers in my yard and get clipped every year. I will get an early start.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: GatorMango on March 22, 2021, 06:54:41 PM
Hi everyone - new to the forum and new to mango trees (not new to eating mangos!).  I have questions on two different trees at home.

We moved to a new home 2 yrs ago with an established mango tree - and have yet to get any successful mangos.  Not sure of age or type but I've had several people tell me it's a solid tree that's several years old.  Previous owner said she got fruit from it - but no details.

This year we had lots of blooms that now seem to either be completely dried up or fallen off, and a handful of tiny mangos have appeared on the top branches of the tree. (photos below) Any thoughts?


(https://i.postimg.cc/gXZrHDW7/IMG-3161.jpg) (https://postimg.cc/gXZrHDW7)

(https://i.postimg.cc/14DfgJMn/IMG-3162.jpg) (https://postimg.cc/14DfgJMn)

(https://i.postimg.cc/187txTRT/IMG-3163.jpg) (https://postimg.cc/187txTRT)

(https://i.postimg.cc/c6dvPPQx/IMG-3164.jpg) (https://postimg.cc/c6dvPPQx)

We also planted a Choc Anon tree this year that is expected to fruit in 2 years.  It's been in the ground at our house for more than a month now and I'm starting to see spots on the leaves (closeup photos below)- any thoughts?

Thank you! :)



(https://i.postimg.cc/yJXVPYpF/IMG-3151.jpg) (https://postimg.cc/yJXVPYpF)

(https://i.postimg.cc/njFnwbNN/IMG-3152.jpg) (https://postimg.cc/njFnwbNN)

(https://i.postimg.cc/GHVh3fss/IMG-3153.jpg) (https://postimg.cc/GHVh3fss)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 23, 2021, 09:52:37 PM
Powdery Mildew on bloom.  Last two photos show mite damage.  Both are common in late Winter and Spring.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on March 29, 2021, 09:59:13 AM
Found this wound on one of my Pim Seng Mun seedlings this morning. It is about 2 1/2 - 3 feet above the ground. I'm thinking it's a bite mark from a squirrel or rat? Any other ideas? Also, what should I do about it? I was thinking a spray with Liquid Copper Fungicide and maybe an insecticide to prevent any insects wanting to take advantage of the wound.

The trunk is wet due to the morning fog that has been a regular occurrence recently.

Thanks!

(https://i.postimg.cc/2b8PhvL3/20210329-082008-1.jpg) (https://postimg.cc/2b8PhvL3)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 29, 2021, 03:23:25 PM
The tree will heal that wound just fine.  If you are out spraying anyway, Copper would be good.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: goalaso on April 01, 2021, 04:12:58 PM
Half the mangos on my Julie dwarf seem to be dying of whatever this is. Anyone know? And what to do?


(https://i.postimg.cc/XXzXx77B/IMG-20210401-154842-0.jpg) (https://postimg.cc/XXzXx77B)

(https://i.postimg.cc/8F4zvT05/IMG-20210401-155021-0.jpg) (https://postimg.cc/8F4zvT05)

(https://i.postimg.cc/Z0C59tFb/IMG-20210401-154936-1.jpg) (https://postimg.cc/Z0C59tFb)

(https://i.postimg.cc/F7SFZyBw/IMG-20210401-155136-0.jpg) (https://postimg.cc/F7SFZyBw)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 01, 2021, 06:03:02 PM
I  don't know.  Maybe Boron deficiency?

Does the fertilizer that you use have Boron in it?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: goalaso on April 01, 2021, 08:49:12 PM
I use the Vigoro Citrus and Avocado fertilizer, which does list Boron (0.02%) in the ingredients... From the look of the particles adherent to the end of the mango in the first photo, I assumed this was a disease or a pest rather than deficiency. But I really have no idea.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 01, 2021, 10:05:41 PM
Yes, there could be a disease there.

The picture that had a split in the fruit made me think of Boron deficiciency.  Indeed, the amount of Boron in that fertilizer is extremely low--- should be around 0.10% to 0.20%.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jose Spain on April 02, 2021, 06:54:26 AM
Any idea of what could it be?


(https://i.postimg.cc/CZ4jCFZZ/IMG-20210402-124324.jpg) (https://postimg.cc/CZ4jCFZZ)

(https://i.postimg.cc/w18JStLy/IMG-20210402-124331.jpg) (https://postimg.cc/w18JStLy)

(https://i.postimg.cc/wtFmy0PL/IMG-20210402-124402.jpg) (https://postimg.cc/wtFmy0PL)

(https://i.postimg.cc/WDsZ1Q9s/IMG-20210402-124412.jpg) (https://postimg.cc/WDsZ1Q9s)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 02, 2021, 12:07:03 PM
Jose Spain,
Have you sprayed with a soap, or an oil, or an emulsifiable concentrate?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jose Spain on April 02, 2021, 12:29:59 PM
Jose Spain,
Have you sprayed with a soap, or an oil, or an emulsifiable concentrate?

No, this is the first flush of a graft that didn't show any problem until now so I didn't spray it with anything like that as far as I remember. Could be some bacterial or virus infection?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Honest Abe on April 02, 2021, 06:31:04 PM
Hello Mango Experts
My 2.5 year in ground 7 foot Keitt  has been very healthy looking and it’s got over two dozen large grape sized fruitlets on it.

In less than two weeks, many of the lower leaves are drying up and curling and browning. none of the fruitlets are dropping. They look good. It’s been very dry and I didn’t water much but if anyone can help I’d be very appreciative. Also there are some black spots on most of the leaves.
THANK YOU

-Abe


(https://i.postimg.cc/BjBY6r2V/07-F1-E1-DC-771-A-473-E-BB97-9-CC754283-E93.jpg) (https://postimg.cc/BjBY6r2V)

(https://i.postimg.cc/7CBK1Ss1/2-A148572-E81-D-4526-B7-E1-C01-E8-D83-C119.jpg) (https://postimg.cc/7CBK1Ss1)

(https://i.postimg.cc/gr1BBqYN/3-F3694-FD-0-FBB-4-F20-A2-AC-3-DFE18781-F13.jpg) (https://postimg.cc/gr1BBqYN)

(https://i.postimg.cc/sQvwT1qk/802-C7514-516-E-43-A5-A014-022-DF50690-BB.jpg) (https://postimg.cc/sQvwT1qk)

(https://i.postimg.cc/QVFybnrF/A8-C0-D206-B3-B1-4-E26-B063-A26-E92-DA1-A9-B.jpg) (https://postimg.cc/QVFybnrF)

(https://i.postimg.cc/Bj07JSPF/BC376-EA1-51-A3-4726-BB9-C-59-E9-C9-F90-D4-E.jpg) (https://postimg.cc/Bj07JSPF)

(https://i.postimg.cc/8Fw0y256/FE1-EBDBA-AB19-4328-825-E-F2945592-B5-A6.jpg) (https://postimg.cc/8Fw0y256)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 02, 2021, 07:59:24 PM
Honest Abe, I don't know what is hitting the Keitt's leaves.  Maybe Powdery Mildew, but doesn't look typical.
Was compost applied under the tree?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Honest Abe on April 02, 2021, 10:33:41 PM
Har, nothing has been applied in months. However, you inspired me to have my septic tank drained, you make me wonder if maybe the drain field is overflowing into the root system/taproot. I planted it 15 ft away from edge of it (I thought). 😂
Thank you for your help.

A long shot, but a shot?  That would be a sh$&ty situation...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: skhan on April 11, 2021, 09:16:03 AM

(https://i.postimg.cc/zycXJBnY/IMG-20210411-090119953.jpg) (https://postimg.cc/zycXJBnY)

(https://i.postimg.cc/18t3h6VK/IMG-20210411-090124201.jpg) (https://postimg.cc/18t3h6VK)

(https://i.postimg.cc/nCThPTrz/IMG-20210411-090135312.jpg) (https://postimg.cc/nCThPTrz)

(https://i.postimg.cc/rRNwcN9f/IMG-20210411-090139660-HDR.jpg) (https://postimg.cc/rRNwcN9f)

My 15-18ft ndm tree is pushing diseased looking growth from it's big branches.
I'm in the process of topworking it and even those branches don't look optimal.
I haven't sprayed anything in a while and only applied 8-2-12 about a month ago.
It's in the middle of my yard so Weed and feed type products haven't been applied in a few years.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 11, 2021, 11:24:38 AM
Skhan,
Powdery Mildew is attacking tender new growth, which is already nutritionally deficient, probably including in Zinc, Copper, and Calcium.  Since all the mature leaves look healthy, we are seeing a temporary condition which is affecting the current flush.  This is caused by the topsoil being so dry that the root hairs die.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: skhan on April 11, 2021, 12:43:13 PM
Thanks Har,
This certainly has been a long dry season.
Didn't realized would have such an effect on an established tree.
Your explanation make perfect sense to me
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rainking430 on April 18, 2021, 09:47:28 AM
Har, I have a Pickering that is showing signs of manganese deficiencies (yellow-white leaves with dark green veins). Someone gave me an old bottle of KeyPlex 350 DP they had lying around to try on the tree but the directions are for spraying per acre. Any suggestion if this is ok to use, and if so how much per gallon would you suggest and for how often? Thanks!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 18, 2021, 12:09:48 PM
Rainking430,
I have not worked with Keyplex 350 DP.

If the label doesn't specify how many gallons of spray mix to use on 1 acre, then the default calculation is to figure that the product will be used in 100 gallons of water to be applied on one acre.  So 100th of that amount will be what you will use in 1 gallon.

Whitish-yellowish leaves with green veins: Iron deficiency.  Pale veins with a narrow green strip to either side:  Manganese deficiency.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bovine421 on April 18, 2021, 12:32:54 PM
Someone from Malaysia asked me what systemic fungicide I was using and I responded plant doctor organocide with main active ingredients
Mono- and di-potassium Salts of Phosphorus Acid*

This was his response
 Thank you for that generous information. Appreciate it v much. Mkp..mono potassium phosphate is mild but we use phosphorus acid h3po3 to cure.


I did a Google search and think I found a commercial product from California but I got bewildered in the minutiae of all the details I can't tell if it's for lawn and landscaping or it can be used in Garden applications

Just out of curiosity do recognize or know what he is talking about
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rainking430 on April 19, 2021, 12:54:00 PM
Someone from Malaysia asked me what systemic fungicide I was using and I responded plant doctor organocide with main active ingredients
Mono- and di-potassium Salts of Phosphorus Acid*

This was his response
 Thank you for that generous information. Appreciate it v much. Mkp..mono potassium phosphate is mild but we use phosphorus acid h3po3 to cure.


I did a Google search and think I found a commercial product from California but I got bewildered in the minutiae of all the details I can't tell if it's for lawn and landscaping or it can be used in Garden applications

Just out of curiosity do recognize or know what he is talking about

bovine421, I can't answer your question but out of curiosity do you use Plant Doctor with anything else for powdery mildew? I used Plant Doctor this year for the first time and really like using it, but I'm kind of new at this and didn't account for powdery mildew which ended up taking out my fruit anyway.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rainking430 on April 19, 2021, 01:03:59 PM
Rainking430,
I have not worked with Keyplex 350 DP.

If the label doesn't specify how many gallons of spray mix to use on 1 acre, then the default calculation is to figure that the product will be used in 100 gallons of water to be applied on one acre.  So 100th of that amount will be what you will use in 1 gallon.

Whitish-yellowish leaves with green veins: Iron deficiency.  Pale veins with a narrow green strip to either side:  Manganese deficiency.

Thanks Har! Especially for the difference in iron vs manganese. This stuff has both though so hopefully it will help either way.

The instructions say 2-3 quarts per acre but not how many gallons. so assuming 100 gallons/acre @ 3 quarts = about 1 oz per gallon, so I will try that. It doesnt' say how often though. What would you suggest? Once a week? more, less?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bovine421 on April 19, 2021, 01:59:00 PM
Someone from Malaysia asked me what systemic fungicide I was using and I responded plant doctor organocide with main active ingredients
Mono- and di-potassium Salts of Phosphorus Acid*

This was his response
 Thank you for that generous information. Appreciate it v much. Mkp..mono potassium phosphate is mild but we use phosphorus acid h3po3 to cure.


I did a Google search and think I found a commercial product from California but I got bewildered in the minutiae of all the details I can't tell if it's for lawn and landscaping or it can be used in Garden applications

Just out of curiosity do recognize or know what he is talking about

bovine421, I can't answer your question but out of curiosity do you use Plant Doctor with anything else for powdery mildew? I used Plant Doctor this year for the first time and really like using it, but I'm kind of new at this and didn't account for powdery mildew which ended up taking out my fruit anyway.

I used this during bloom then plant doctor organocide after fruit set
(https://i.postimg.cc/nC0kxtCw/FS-32oz-RTS-Fungicidebottle-7004-BK-1.jpg) (https://postimg.cc/nC0kxtCw)



(https://i.postimg.cc/D4b8ML4T/DRE1023.jpg) (https://postimg.cc/D4b8ML4T)
I really like it and it smells good to. So much so my right brain says hey that would make a great breath freshener. Left brain says don't do it!!  Lol
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rainking430 on April 19, 2021, 04:45:22 PM
I used this during bloom then plant doctor organocide after fruit set
(https://i.postimg.cc/nC0kxtCw/FS-32oz-RTS-Fungicidebottle-7004-BK-1.jpg) (https://postimg.cc/nC0kxtCw)



(https://i.postimg.cc/D4b8ML4T/DRE1023.jpg) (https://postimg.cc/D4b8ML4T)
I really like it and it smells good to. So much so my right brain says hey that would make a great breath freshener. Left brain says don't do it!!  Lol

Good to know, I will have to remember this next year. I am also looking at Garden Safe Fungicide3 which seems to work on both powdery mildew and anthracnose. I confirmed with the company that it can be used on mango.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 19, 2021, 10:24:18 PM
Probably not more than once a month.

In between, you could use seaweed extract.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on April 26, 2021, 03:33:30 PM
Premature fruit drop question.
Wondering which nutrients are key to keep young fruit from falling.
I had at least a dozen golf ball size Kents drop.  Couple dozen nice ones still on tree (record for me).
I know trees need many nutrients, i fertilize, what would top 2 most important nutrients be?
I have 50# bag of calcium too.

Thanks a bunch,
Ed

(https://i.postimg.cc/VJwrP9Yh/IMG-5292.jpg) (https://postimg.cc/VJwrP9Yh)

(https://i.postimg.cc/QFqB8BCd/IMG-5293.jpg) (https://postimg.cc/QFqB8BCd)

(https://i.postimg.cc/xXdkdfzG/IMG-5299.jpg) (https://postimg.cc/xXdkdfzG)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Orkine on April 26, 2021, 04:41:46 PM
Ed, I have had a fair amount of fruit drop as well but mine is due to lack of adequate moisture.
It has been very dry with occasional rain in spurts.  I should apply some water, even the large established trees.  Its just been too dry.

Does your tree get enough water to exclude that as a possible cause?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: sumognat on April 26, 2021, 05:10:52 PM
Premature fruit drop question.
Wondering which nutrients are key to keep young fruit from falling.
I had at least a dozen golf ball size Kents drop.  Couple dozen nice ones still on tree (record for me).
I know trees need many nutrients, i fertilize, what would top 2 most important nutrients be?
I have 50# bag of calcium too.

Thanks a bunch,
Ed

(https://i.postimg.cc/VJwrP9Yh/IMG-5292.jpg) (https://postimg.cc/VJwrP9Yh)

(https://i.postimg.cc/QFqB8BCd/IMG-5293.jpg) (https://postimg.cc/QFqB8BCd)

(https://i.postimg.cc/xXdkdfzG/IMG-5299.jpg) (https://postimg.cc/xXdkdfzG)

My Kent is dropping lots of little fruit, too.  I am guessing it's because of the lack of rain, but it also does seem to regularly drop small fruits each year.  There's also a ton of fruit on it, too, so I imagine it can't hold onto everything?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on April 26, 2021, 07:29:25 PM
Orkine, i do water it now & then.  It's putting out new leaves & fruit that drops has sap.
I somehow hear Har saying calcium.  Could be from watching countless hrs of great TT youtube videos heh.

Sumo, maybe?  Could it be we need to fill it's belly with more fert before rainy season ends?  I'll give it more this summer.  This was my 1st time giving it calcium & i'll guess 5lbs.  I have Potassium too.  50lbs each.

Tomorrow morn i'll give it a nutrient shower of micros.
Ed
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 26, 2021, 08:47:00 PM
Good mineral nutrition in general helps to hold on to fruit set, especially Boron and Calcium.  And sufficient topsoil moisture.

Besides being dry, we have had an inordinate amount of wind;  many locations had gusts at tropical storm strength; this knocks down many fruits.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on April 27, 2021, 07:41:50 PM
Har, thank you for knowledge.  You're the reason i have calcium sulfate after watching a fertilizer video, stating how well it prevents leaf tip burn when fertilizing, i tried it, it worked.

This morning i gave entire tree a shower with 2oz UltraRx 1.5 tablespoon/gallon.  Used a little on grapefruit too.

Then i got out calcium & spread maybe 4lbs, and a few lbs of fert, and finally hosed it all in till saturation in hopes of dispersing it all evenly to soak in.
I'll water it again when soil looks dry.  I know the fertilizer's on me if i did it when i shouldn't.
Trunk's 12" or more, tree maybe 12' tall.  I cut feet off every yr.

Ed

Edit- removed photos of fert & spray because it didn't help drop problem, did make leaves healthier looking.
Fruit that dropped after sitting in sun on patio for days were rotten badly inside.  My guess they dropped from mbbs or anthracnose or some type of bacteria.  I'll be looking into systemic treatment.  Large healthy fruit looking good on tree atm.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 27, 2021, 08:17:13 PM
Looks good.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: BR on May 08, 2021, 04:34:27 PM

(https://i.postimg.cc/V5dgvmKT/IMG-0529.jpg) (https://postimg.cc/V5dgvmKT)

(https://i.postimg.cc/6Tg0GgSQ/IMG-0531.jpg) (https://postimg.cc/6Tg0GgSQ)

Can anyone help me with this PPK? No flowers and no growth this year. You can see it is also only growing on one side. I gave it a healthy dose of Helena 8-2-12 about 6 weeks ago and still nothing. It has been very dry this year, but every other mango I have has flowered or pushed or done something. This one has just been dormant. It had a those green bumps like it was trying to push, but nothing happened. Any ideas?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 08, 2021, 09:54:07 PM
If the fertilizer has stayed dry most days, it hasn't been doing anything most days.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: bsbullie on May 08, 2021, 10:13:40 PM

(https://i.postimg.cc/V5dgvmKT/IMG-0529.jpg) (https://postimg.cc/V5dgvmKT)

(https://i.postimg.cc/6Tg0GgSQ/IMG-0531.jpg) (https://postimg.cc/6Tg0GgSQ)

Can anyone help me with this PPK? No flowers and no growth this year. You can see it is also only growing on one side. I gave it a healthy dose of Helena 8-2-12 about 6 weeks ago and still nothing. It has been very dry this year, but every other mango I have has flowered or pushed or done something. This one has just been dormant. It had a those green bumps like it was trying to push, but nothing happened. Any ideas?

Not unusual characteristics for a PPK.  Make sure it gets water to go with the fert this growing season.

As for one sided growth, it looks to be lacking any true main branches on that off side.  Without doing major pruning to reshape, it may remain that way.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: BR on May 09, 2021, 02:49:46 PM
Har and bsbullie, thanks for your responses. Hopefully the problem will resolve itself once the rain starts and fertilizer seeps in. Here's to a good growing season.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: INaba on May 11, 2021, 10:18:05 PM
Mango growers I need your expertise please
What deficiency this mahachanok tree show. Do I have to spray it with something?

(https://i.postimg.cc/Z0VPQRNP/20210511-182441.jpg) (https://postimg.cc/Z0VPQRNP)

Is this boron poisoning on leaves shows this picture?
(https://i.postimg.cc/YjsGgmgP/20210511-182502.jpg) (https://postimg.cc/YjsGgmgP)
One more question:
What could be the reason tree dropped all fruits from top part of the  tree. And there are some fruits on bottom part of the tree. Prior year it had twice more fruits.
 
Also what the problem with this florigon? Do I have to cut top part off?

(https://i.postimg.cc/z3Vw9NF9/20210511-182550.jpg) (https://postimg.cc/z3Vw9NF9)
Thanks.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 13, 2021, 01:32:42 PM
INaba,
Mahachanok has deficiency of Magnesium, and perhaps of Zinc.  Treat with Epsom Salt (Magnesium Sulfate):  1 Tablespoon per gallon in a watering can, 4 gallons total.  Walk around the drip ring, swinging the watering can back and forth, under and outside the canopy.

Your Florigon has Mango Malformation.  Cut trunk off, several inches below the malformed wood knot.  Sanitize clippers.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: INaba on May 13, 2021, 06:44:05 PM
Mahachanok has deficiency of Magnesium, and perhaps of Zinc.  Treat with Epsom Salt (Magnesium Sulfate):  1 Tablespoon per gallon in a watering can, 4 gallons total.  Walk around the drip ring, swinging the watering can back and forth, under and outside the canopy.

Your Florigon has Mango Malformation.  Cut trunk off, several inches below the malformed wood knot.  Sanitize clippers.
Har, thanks a lot for your expertise.
For Florigon do I need to spray with fungicide after.
For mahachanok can I do a zinc foliar spray?
Thanks a million.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on May 14, 2021, 05:32:47 PM

(https://i.postimg.cc/QBf0ZznS/20210514-172440.jpg) (https://postimg.cc/QBf0ZznS)

There is some bark crack on this mango and some sap is coming out. What caused this? Would heat be a factor? It gets over 100 in the greenhouse. Should I cut below the wound?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 15, 2021, 10:42:24 AM
Jaboticaba45,

Splitting like that can be from Copper deficiency, resulting in inadequate strenthening of the bark, which then splits under sudden changes of hydration or temperature.  Then infection can move into the open wound, and move into tissues having inadequate Copper, Zinc, Calcium, Silicon, Manganese, or Sulfur.

You could spray just that black cracked spot with 3% hydrogen peroxide, with its spray bottle from the drugstore, undiluted [not recommended for general spraying on plants, due to undeclared ingredients which are not labelled for use on plants].  [Good for sanitizing tools too.]

Spray trunk with any Copper Sulfate Pentahydrate fertilizer or fungicide, at the maximum recommended rate on the fungicide label, then add water to dilute, and spray the foliage.  If you already have ammoniated copper, that should work too.  Either one will penetrate quickly.  Any other Copper molecules are likely to act mostly on the outside, and slowly penetrate some.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 15, 2021, 10:47:36 AM
INaba,

Spraying the sanitization-pruning wound with hydrogen peroxide can be helpful.  Then with any Copper spray.

Spraying all your mangos' foliage with a multiple micronutrient mix is usually good, if not mixed too strong.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: INaba on May 16, 2021, 10:42:41 PM


Spraying all your mangos' foliage with a multiple micronutrient mix is usually good, if not mixed too strong.
Har, thanks a lot for answering every question.
Is this one good micro elements complex ?

(https://i.postimg.cc/QHRYLvfs/20210515-191152.jpg) (https://postimg.cc/QHRYLvfs)




(https://i.postimg.cc/QVYnmF5F/20210515-191214.jpg) (https://postimg.cc/QVYnmF5F)

And I red on this forum about 90% of questions your recommendation is cooper spray. How often we need to spray with cooper? Can I substitute spraying sulfur or this fungicide  which seems like organic friendly version. And how often to use all fungicides



(https://i.postimg.cc/Cn5rY0yM/20210515-191437.jpg) (https://postimg.cc/Cn5rY0yM)

And one very last question.  What is this on my peach cobbler?
And if I need to do something in this case?
Thanks, thanks, thanks for your expertise.
Irene.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: INaba on May 16, 2021, 10:45:29 PM
Forgot picture of peach cobbler
(https://i.postimg.cc/5QfQTBr8/20210515-191820.jpg) (https://postimg.cc/5QfQTBr8)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 17, 2021, 08:35:45 AM
The Citrus nutritional mix should help some.  Chelated mixes are better.  Lignosulfonate chelates are allowed in organic production;  EDTA's are not.

Copper Sulfate Pentahydrate is a substance allowed in Organic production;  Ammoniated Copper is not.  These are not product/sales package names.

Copper is an essential nutrient for plants and humans;  it is not to be avoided.  It must be used in moderation, sensibly.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 17, 2021, 08:38:07 AM
That Garden Friendly Fungicide won't do anything for a Copper deficiency.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on May 17, 2021, 09:20:31 AM
Hi Har-

Would you consider this a good chelated nutritional spray on mangoes?
https://southernag.com/residential-products/chelated-general-purpose-flower-garden-nutritional-spray/ (https://southernag.com/residential-products/chelated-general-purpose-flower-garden-nutritional-spray/)

or how about this one?
https://www.fertilome.com/ProductFiles/Chelated%20Liquid%20Iron-16oz%20PRS-10625.pdf (https://www.fertilome.com/ProductFiles/Chelated%20Liquid%20Iron-16oz%20PRS-10625.pdf)
https://www.domyown.com/fertilome-chelated-liquid-iron-and-other-micro-nutrients-p-1984.html (https://www.domyown.com/fertilome-chelated-liquid-iron-and-other-micro-nutrients-p-1984.html)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 18, 2021, 08:40:43 AM
JakeFruit,

That Southern Ag product looks very good, and the other one should work too.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on May 18, 2021, 11:49:41 AM
Great, thank you Har.

If you don't mind, one more question I've been meaning to ask you. I had asked your opinion on a timed-release fertilizer about a year ago, you said it looked good except there was a little more urea than you'd prefer to see in it. You said to watch the leaf wax for signs of "melting" if I recall correctly. I'm wondering if that's what I have going on now. Do these photos show the issue you were warning me about?

(https://i.postimg.cc/tYkxQpDp/IMG-3171-1.jpg) (https://postimg.cc/tYkxQpDp)
(https://i.postimg.cc/BtGpJZ5K/IMG-3170-1.jpg) (https://postimg.cc/BtGpJZ5K)

I've been using a multi-nutrient foliar citrus spray (the Southern Ag one INaba linked above, actually) with a little dish soap every few weeks in Jan-Mar. I was assuming what I was seeing was the spray. Want to be certain before I apply my next round of fertilizer to my potted mangoes.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 18, 2021, 09:05:35 PM
Jake,

You are right, that that is spray residue, or irrigation-water mineral residue.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on May 19, 2021, 08:33:10 AM
You are a savant  :)

I do indeed water off my shallow well, overspray leaves rust stains on PVC, concrete, etc.,. I noticed leaves located higher up didn't have the residue on the them, which makes sense now because they were above the irrigation spray.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: lebmung on May 23, 2021, 05:26:26 AM
New growth gets damaged.  I can't see any insects.
Is this from spidermites or some fungal problem?

(https://i.postimg.cc/FYCgGFXf/DSC-3070.jpg) (https://postimg.cc/FYCgGFXf)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on May 27, 2021, 05:03:17 AM
I posted in the main forum but I didn't get an answer.

How would you treat an extremely severe calcium deficiency in 2-3 years old mango seedlings that look like 6 months old please?

I added 40gr (almost 3 Tbsp) of calcium nitrate to each one's roots (diluted in irrigation water) and I also have been spraying a lower dose of the same product for the last 3 days. I do see progress but I'm too worried that I might not be doing enough. Sandy soil with >8 pH and low Mg content. I have been spraying Mg before and I gave Mg sulfate about a month ago. Let me know if I should be doing more, or less please...

Thanks Har!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 28, 2021, 06:15:27 PM
Calcium deficiencies can only be corrected slowly.  Calcium Nitrate may help some, but can quickly add too much nitrate, which can actually make Calcium deficiency worse.  Preferably use Calcium Sulfate (gypsum), or chelated Calcium.  If soil is extremely acidic, small amounts of Calcium Carbonate (lime) can help.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 28, 2021, 06:22:45 PM
Lebmung,

Zinc deficiency, caused likely by carbohydrate deficency in the roots--- starvation, due to no leaves synthesizing.

The burns on the tiny new leaves can be from fungus or salt burn--- such as from too much fertilizer, too much dog pee, pool water, salty rain, etc.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on May 29, 2021, 07:39:13 PM
Calcium deficiencies can only be corrected slowly.  Calcium Nitrate may help some, but can quickly add too much nitrate, which can actually make Calcium deficiency worse.  Preferably use Calcium Sulfate (gypsum), or chelated Calcium.  If soil is extremely acidic, small amounts of Calcium Carbonate (lime) can help.

My soil test shows a Boron deficiency as well, do you have any recommendations for the kind of Boron that I could use in Alkaline soil of >8 pH please? For some reason, Boron chelation seems more complicated than other micros? Thanks!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: 3rdgrey on May 30, 2021, 02:27:01 PM
Hi. Im in 9b. I have several mango vareities each exhibiting varying degrees of health although they all recieve the same treatment. Recently i acquired two large 7 or so ft. tall additions, a Glenn and a Valencia Pride. I had mound planted them due to the periods of past standing water. However,  we have had several weeks of 30 to 40 mph winds so planted them in the ground. Two days ago i noticed the majority of the Glenn's leaves on the ground. The Valencia is beginning to do the same. I had been watering them daiy by hand. No rain herebeither for weeks. My others have yellow leaves dropping. Too much water? Is the Glenn finished? Appreciate any help.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 31, 2021, 10:08:06 PM
Often chelated mixes of micro-nutrients have Magnesium Sulfate and Boric Acid, neither of which is chelated, but usually work fine, for foliar sprays.  The pH of the soil is immaterial for foliar sprays.  For soil drenches, with micros, I imagine that Sodium Borate might work better, as far as not getting "tied up."
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on June 02, 2021, 09:12:24 AM
Often chelated mixes of micro-nutrients have Magnesium Sulfate and Boric Acid, neither of which is chelated, but usually work fine, for foliar sprays.  The pH of the soil is immaterial for foliar sprays.  For soil drenches, with micros, I imagine that Sodium Borate might work better, as far as not getting "tied up."

I have to help out with a soil drench as I'm having problems with what appears to be the immobile nutrients, so it's mentally challenging me to think that newer leaves could benefit from Boron/calcium when fed to older leaves. How mobile are immobile nutrients Har? Thanks
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 04, 2021, 09:14:37 PM
Well-supplied leaves will be less of a demand on sap passing by to the new growth.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on June 05, 2021, 09:25:19 AM
Solubor (boron) and Keyplex 350DP are in my toolbox.  Boron should be applied about a month before flowering on most fruiting plants/trees/grapevines albeit it in very small amounts.  Avocados especially benefit from an application via the foliage.  Be sure and add a non ionic surfactant to your spray or you're wasting your time.  Will become rainfast as soon as it dries/sets.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 10, 2021, 08:35:33 AM
Trees with susceptibility to Mango Bacterial Black Spot are not consistent from one year to the next.  They can be terrible, one year, or two or three years in a row, and then clean up.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on June 10, 2021, 06:18:28 PM
Trees with susceptibility to Mango Bacterial Black Spot are not consistent from one year to the next.  They can be terrible, one year, or two or three years in a row, and then clean up.

Depends on your pressures such as periods of constant rain. 

Highly recommend a foliar spray of Pristine, a systemic broad spectrum fungicide/bactericide, when disease pressures are high.  It will take care of your MBSBS, and much more.  We vineyard owners use this Aggie recommended product on many fruits and vines.  Have used it on mangos.   Pristine includes a "strobby".  I know of one very large commercial Fl. mango grower/seller that uses it.  His fruit is indeed "pristine".

1 - 4 with 4 having the highest protection.  Notice "black rot" and bunch rot ratings.

(https://i.postimg.cc/LnRzQNKn/Fungicides.jpg) (https://postimg.cc/LnRzQNKn)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rainking430 on June 14, 2021, 05:09:02 PM

Depends on your pressures such as periods of constant rain. 

Highly recommend a foliar spray of Pristine, a systemic broad spectrum fungicide/bactericide, when disease pressures are high.  It will take care of your MBSBS, and much more.  We vineyard owners use this Aggie recommended product on many fruits and vines.  Have used it on mangos.   Pristine includes a "strobby".  I know of one very large commercial Fl. mango grower/seller that uses it.  His fruit is indeed "pristine".

1 - 4 with 4 having the highest protection.  Notice "black rot" and bunch rot ratings.

(https://i.postimg.cc/LnRzQNKn/Fungicides.jpg) (https://postimg.cc/LnRzQNKn)


I would love to get my hands on that but unfortunately I'm merely a hobbyist with only have a few trees, so I can't justify paying $400. I wish there was something sold in a smaller quantity that is just as effective. I prefer systemics and really like Organocide Plant Doctor, but I need something that can also tackle powdery mildew and MBBS (Plant Doctor says it only handles anthracnose in mangos).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on June 15, 2021, 07:54:50 AM
I would love to get my hands on that but unfortunately I'm merely a hobbyist with only have a few trees, so I can't justify paying $400. I wish there was something sold in a smaller quantity that is just as effective. I prefer systemics and really like Organocide Plant Doctor, but I need something that can also tackle powdery mildew and MBBS (Plant Doctor says it only handles anthracnose in mangos).

Do a group buy.  I split a jug with a friend probably 12 years ago.  Still have some left.   $329 on ebay.   
https://www.ebay.com/itm/402745533955?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=402745533955&targetid=882300791467&device=c&mktype=pla&googleloc=9027556&poi=&campaignid=1669934603&mkgroupid=65058347419&rlsatarget=pla-882300791467&abcId=1123856&merchantid=6296724&gclid=EAIaIQobChMIysvY1MmZ8QIVPW1vBB3CywOREAQYBSABEgJyQvD_BwE (https://www.ebay.com/itm/402745533955?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=402745533955&targetid=882300791467&device=c&mktype=pla&googleloc=9027556&poi=&campaignid=1669934603&mkgroupid=65058347419&rlsatarget=pla-882300791467&abcId=1123856&merchantid=6296724&gclid=EAIaIQobChMIysvY1MmZ8QIVPW1vBB3CywOREAQYBSABEgJyQvD_BwE)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jagmanjoe on June 15, 2021, 01:01:02 PM

Depends on your pressures such as periods of constant rain. 

Highly recommend a foliar spray of Pristine, a systemic broad spectrum fungicide/bactericide, when disease pressures are high.  It will take care of your MBSBS, and much more.  We vineyard owners use this Aggie recommended product on many fruits and vines.  Have used it on mangos.   Pristine includes a "strobby".  I know of one very large commercial Fl. mango grower/seller that uses it.  His fruit is indeed "pristine".

1 - 4 with 4 having the highest protection.  Notice "black rot" and bunch rot ratings.

(https://i.postimg.cc/LnRzQNKn/Fungicides.jpg) (https://postimg.cc/LnRzQNKn)


I would love to get my hands on that but unfortunately I'm merely a hobbyist with only have a few trees, so I can't justify paying $400. I wish there was something sold in a smaller quantity that is just as effective. I prefer systemics and really like Organocide Plant Doctor, but I need something that can also tackle powdery mildew and MBBS (Plant Doctor says it only handles anthracnose in mangos).

Not sure how it compares to Pristine but I have had some great success on my mango trees with Monterey LG3374 Complete Concentrate Fungicide & Bactericide which is available through Amazon in small quantities.  Wish I had some scientific analysis knowledge to compare for you.  Perhaps someone else has more knowledge for comparison and can chime in.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rainking430 on June 16, 2021, 10:18:32 AM
Not sure how it compares to Pristine but I have had some great success on my mango trees with Monterey LG3374 Complete Concentrate Fungicide & Bactericide which is available through Amazon in small quantities.  Wish I had some scientific analysis knowledge to compare for you.  Perhaps someone else has more knowledge for comparison and can chime in.

Thanks, I will look into it!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rainking430 on June 16, 2021, 10:29:48 AM
Har, I posted this in a new thread but hoping I can get your input on it. Someone suggested to me using composted manure on my mango trees. I'm a little skeptical. What do you think?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 16, 2021, 01:20:54 PM
"Skeptical" is good.  I would only use manure compost, lightly, around a mango, if the mango looks severely Nitrogen deficient--- ratty, defoliating, dieback.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 25, 2021, 10:40:40 PM
It seems that one should separately rate skin and pulp in their resistance to Mango Bacterial Black Spot.

With Keitt, neither the skin nor the pulp is resistant;  even what look like minor surface spots of the disease will have deep lines of visible infection to  the seed and then laterally along the seed.  Even while the fruit is still green, it can all be ruined already.

With Lemon Zest, each fruit will have one infection on the shoulder, and it penetrates to the seed;  however, most of that same fruit ripens properly and is absolutely prime.

Some fruits get many spots of the disease, which stay right near the skin in the pulp, and the rest is good to eat.

A few varieties hardly get the disease at all, and when a spot gets started, it piles above the skin, as a cosmetic blemish, and stays out of the pulp entirely.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rainking430 on June 26, 2021, 12:14:30 PM
It seems that one should separately rate skin and pulp in their resistance to Mango Bacterial Black Spot.

With Keitt, neither the skin nor the pulp is resistant;  even what look like minor surface spots of the disease will have deep lines of visible infection to  the seed and then laterally along the seed.  Even while the fruit is still green, it can all be ruined already.

With Lemon Zest, each fruit will have one infection on the shoulder, and it penetrates to the seed;  however, most of that same fruit ripens properly and is absolutely prime.

Some fruits get many spots of the disease, which stay right near the skin in the pulp, and the rest is good to eat.

A few varieties hardly get the disease at all, and when a spot gets started, it piles above the skin, as a cosmetic blemish, and stays out of the pulp entirely.

Thanks for the really good insights Har. I've heard a lot about how disease resistant sweet tart is, would you consider it among those that hardly get MBBS?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 26, 2021, 03:13:54 PM
The disease that I often see on Sweet Tart is a soft stem-end rot, probably Phomopsis.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on June 26, 2021, 03:42:41 PM
It seems that one should separately rate skin and pulp in their resistance to Mango Bacterial Black Spot.

With Keitt, neither the skin nor the pulp is resistant;  even what look like minor surface spots of the disease will have deep lines of visible infection to  the seed and then laterally along the seed.  Even while the fruit is still green, it can all be ruined already.

With Lemon Zest, each fruit will have one infection on the shoulder, and it penetrates to the seed;  however, most of that same fruit ripens properly and is absolutely prime.

Some fruits get many spots of the disease, which stay right near the skin in the pulp, and the rest is good to eat.

A few varieties hardly get the disease at all, and when a spot gets started, it piles above the skin, as a cosmetic blemish, and stays out of the pulp entirely.

Hi Har!

This is great and very informational!

May I ask, other than Keitt, what are some other varieties where MBBS makes the fruit inedible?

On the opposite end of the spectrum, what are some varieties that are MBBS resistant or the fruit is still edible despite a little MBBS?

How do your other "supremely delicious" mangos, other than Lemon Zest, rate with MBBS (Fruit Punch, Jakarta, Kathy, M-4, Orange Essence, Pram Kai Meu, Carrie)?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on June 26, 2021, 06:43:30 PM
On our mango hunt deep into the heart of Bokeelia, Stanley's Mango Stand had some Mun Kun Si mangos for sale. Outwardly they looked good, but cutting into them, this is what I done seen. So what is this affliction? Also: Is the seed from this specimen not fit for planting? Thanks!

(https://i.postimg.cc/9rQRJ0Bq/20210626-182959-1-2.jpg) (https://postimg.cc/9rQRJ0Bq)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Paquicuba on June 26, 2021, 09:53:14 PM
Need help identifying what's going on with my Sweet Tart. New growth is looking sick and not developing. Please see attached pics. Thanks so much for looking at it.

(https://i.postimg.cc/McPwp1NR/IMG-0920.jpg) (https://postimg.cc/McPwp1NR)

(https://i.postimg.cc/G4jr6WjX/IMG-0921.jpg) (https://postimg.cc/G4jr6WjX)

(https://i.postimg.cc/21Yrcknq/IMG-0922.jpg) (https://postimg.cc/21Yrcknq)

(https://i.postimg.cc/Lq6RSxC2/IMG-0923.jpg) (https://postimg.cc/Lq6RSxC2)

(https://i.postimg.cc/9rZcYRw5/IMG-0924.jpg) (https://postimg.cc/9rZcYRw5)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 27, 2021, 12:22:23 PM
Paquicuba,

Multiple nutrient deficiencies, especially of Zinc and Copper and Manganese, possibly even of Potassium and Calcium.

This sudden difference, compared to healthy previous growth, was probably caused by drought over part of the root area;  however, there is a possibility that the deficiencies were caused by vein blockage, such as that caused by Fusarium fungus, as the last picture looks like Mango Malformation just getting started.

Whatever the cause from nature, it was made worse by your going on a kick to cut back most of the branches, which is excessive at any time of year, and made even worse by doing so during the dry Spring.  Most pruning should be done in Summer or early Fall, when there is plenty of moisture and heat for tree recovery.

Pruning cuts on small branches should be made below growth flush rings.  When pruning is done just above growth flush rings, as shown in these pictures, an excess of sprouting occurs.  Excess sprouts should be removed right away, so that no more than four sprouts remain from one branch, and fewer than that if there is no obvious space for new branches to occupy without dense crowding.

If, after removal of excess sprouts and after improved watering and mineral nutrient provision, the branch in the last picture continues to be aberrant, cut it off.

Sanitize fingers and clippers after any contact with possibly infected branches, before touching branches that appear healthy.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 27, 2021, 12:42:18 PM
FlMikey,

I haven't observed Kathy, M-4, or Orange Essence under high disease pressure from Mango Bacterial Black Spot.  The few fruits I have seen on topworked branches of big trees, haven't seemed problematic. 

Carrie is very resistant.

Fruit Punch is also usually clean, with only localized penetration of pulp at worst.

Pram Kai Mea (Brahm Kay Meu) is usually clean fruited, but the tree is highly susceptible to the foliar form of MBBS.  When spots occur on the very ripe fruits, pulp penetration tends to be about 1/8 of an inch, and these bad spots peel right off with the skin.

All of these observations are at Truly Tropical, under usually ideal weather conditions for mangos.  When I picked the experimental collection/grove at Zill's in 2015, MBBS was not present.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 27, 2021, 12:45:06 PM
Fliptop,

Those internal defects look like Boron deficiency.  Still edible.  Seed should still be good.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on June 27, 2021, 01:13:36 PM
Thanks, as always, Har!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on June 28, 2021, 08:52:09 AM
Not sure how it compares to Pristine but I have had some great success on my mango trees with Monterey LG3374 Complete Concentrate Fungicide & Bactericide which is available through Amazon in small quantities.  Wish I had some scientific analysis knowledge to compare for you.  Perhaps someone else has more knowledge for comparison and can chime in.

Active Ingredient:Bacillus amyloliquefaciensstrain D747* ..............................  98.85%

I can vouch for the effectiveness of Pristine having used it for 15 years.  Texas Agrilife has some incredible fruit and grape scientists and updates their fungicide list often.

The label also recommends rotating it with other chemical classes, a practice all growers should practice whether the back yard gardener with 10 mango trees or commercial doing 1,000.  3X per year max is what's recommended I believe.  Kicker is it's so damn expensive.

Probably the cheapest fungicide/bactericide for you Florida growers is a local Fl. product called Magnabon CS2005.  It's also OMRI certified in case you roll that way.  Use at a rate of 2 tsp/gallon and don't forget to add NIS, a non ionic surfactant, to your spray or you're wasting your time.  It will be rainfast as soon as it dries for an hour or two.  1 tsp./gallon for most NIS strengths.  Scale up for large volume mixes.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Paquicuba on July 06, 2021, 04:50:40 PM
Thanks so much Har for your very informative expert advice!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FlMikey on July 06, 2021, 05:46:28 PM
FlMikey,

I haven't observed Kathy, M-4, or Orange Essence under high disease pressure from Mango Bacterial Black Spot.  The few fruits I have seen on topworked branches of big trees, haven't seemed problematic. 

Carrie is very resistant.

Fruit Punch is also usually clean, with only localized penetration of pulp at worst.

Pram Kai Mea (Brahm Kay Meu) is usually clean fruited, but the tree is highly susceptible to the foliar form of MBBS.  When spots occur on the very ripe fruits, pulp penetration tends to be about 1/8 of an inch, and these bad spots peel right off with the skin.

All of these observations are at Truly Tropical, under usually ideal weather conditions for mangos.  When I picked the experimental collection/grove at Zill's in 2015, MBBS was not present.

Thank you very much for the information Har!  Really useful!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jagmanjoe on July 06, 2021, 05:59:16 PM
Not sure how it compares to Pristine but I have had some great success on my mango trees with Monterey LG3374 Complete Concentrate Fungicide & Bactericide which is available through Amazon in small quantities.  Wish I had some scientific analysis knowledge to compare for you.  Perhaps someone else has more knowledge for comparison and can chime in.

Active Ingredient:Bacillus amyloliquefaciensstrain D747* ..............................  98.85%

I can vouch for the effectiveness of Pristine having used it for 15 years.  Texas Agrilife has some incredible fruit and grape scientists and updates their fungicide list often.

The label also recommends rotating it with other chemical classes, a practice all growers should practice whether the back yard gardener with 10 mango trees or commercial doing 1,000.  3X per year max is what's recommended I believe.  Kicker is it's so damn expensive.

Probably the cheapest fungicide/bactericide for you Florida growers is a local Fl. product called Magnabon CS2005.  It's also OMRI certified in case you roll that way.  Use at a rate of 2 tsp/gallon and don't forget to add NIS, a non ionic surfactant, to your spray or you're wasting your time.  It will be rainfast as soon as it dries for an hour or two.  1 tsp./gallon for most NIS strengths.  Scale up for large volume mixes.

Thanks so much for your post and suggestion relative to Magnabon CS2005, Mark.  I will look into purchasing some of it and adding it to my fungicide rotation.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on July 06, 2021, 06:28:02 PM
Thanks so much for your post and suggestion relative to Magnabon CS2005, Mark.  I will look into purchasing some of it and adding it to my fungicide rotation.

Owner is Frank Miele.   Don't forget the surfactant.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on July 13, 2021, 11:13:12 AM
Har and Mark,

I appreciate all your help and the free golden tips that you give here!

I have been trying to grow mangoes in my Mediterranean climate for a few years now. The story is always the same, seeds germinate, start very happy for 3 months or so and 2 years later succumb and die. Before they die, they get stuck and cannot put any more growth for many months no matter how warm the weather gets...

I have spent thousands on fertilizer and I have seen all kinds of deficiencies/surprises and nutrient blockages after abusing one or an other, but I'm not giving up :)  And this time I will use your help from the start. So here is my soil test, obviously from the areas outside of where I have been butchering seedlings.

(https://i.postimg.cc/wy6d9W8h/image.png) (https://postimg.cc/wy6d9W8h)

As you can notice already, I have one of the toughest conditions to grow really anything, let alone those tasty sensitive fruits. But savoring a lovely LZ makes me think again that everything is possible.

I'm not worried about cold here, it does get chilly during winter but below 40 would probably be a once in a century event.

Besides Sulphur for reducing pH and chelated micros, when you look at my soil test, what would be the standard fertilizer that I should be relying on as the resources inside the seed get depleted and roots start to look for nutrients... Is the soil too poor in everything that I should be looking at 20-20-20 for example?

Please keep in mind that this is a very tricky condition, P does mess up with calcium and Potassium is scarce but may also mess up with other elements when over applied?

Would you think of a different NPK formula that should work better in my conditions please? Maybe less P, more K? I don't wanna make this post even longer, we can discuss Mg/Ca later. (Apparently despite the abundance of Ca in the soil, mango roots are very finicky and don't like it? Or I could have just abused giving P)

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 13, 2021, 10:30:10 PM
Magnesium is low.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on July 14, 2021, 11:46:43 PM
Sulphur as well right? But Har with magnesium being mobile, would you expect a seedling to halt any new growth (Just buds not able to develop) without showing an Mg deficiency on older leaves?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 24, 2021, 11:07:36 AM
It seems that one should separately rate skin and pulp in their resistance to Mango Bacterial Black Spot.

With Keitt, neither the skin nor the pulp is resistant;  even what look like minor surface spots of the disease will have deep lines of visible infection to  the seed and then laterally along the seed.  Even while the fruit is still green, it can all be ruined already.

With Lemon Zest, each fruit will have one infection on the shoulder, and it penetrates to the seed;  however, most of that same fruit ripens properly and is absolutely prime.

Some fruits get many spots of the disease, which stay right near the skin in the pulp, and the rest is good to eat.

A few varieties hardly get the disease at all, and when a spot gets started, it piles above the skin, as a cosmetic blemish, and stays out of the pulp entirely.

Hi Har!

This is great and very informational!

May I ask, other than Keitt, what are some other varieties where MBBS makes the fruit inedible?

On the opposite end of the spectrum, what are some varieties that are MBBS resistant or the fruit is still edible despite a little MBBS?

How do your other "supremely delicious" mangos, other than Lemon Zest, rate with MBBS (Fruit Punch, Jakarta, Kathy, M-4, Orange Essence, Pram Kai Meu, Carrie)?

When Mango Bacterial Black Spot first arrived, 'Kent' were the most affected for several years, but lately, the five trees that I pick have been clean and really nice.  Did they develop resistance on their own?  Were they lucky not to be exposed the last couple of seasons?  Were my proprietary nutritional sprays and nutritional drenches really that effective on Kent, but not on Keitt?

All the above mentioned supremely delicious mangos continue to be largely resistant to MBBS in the grove that I pick.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Seanny on July 25, 2021, 12:55:03 AM
Are there any trees there are immune to MBBS planted next to Kent?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 25, 2021, 12:57:10 PM
I don't know of any immune varieties, anywhere.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: INaba on July 26, 2021, 12:14:32 AM
Har,
Is this mango malformation? On this tree.

(https://i.postimg.cc/06Gw3ZHR/20210725-173917.jpg) (https://postimg.cc/06Gw3ZHR)

Also, please what wrong with this pineapple pleasure seed

(https://i.postimg.cc/bSZdzRLv/20210725-155120.jpg) (https://postimg.cc/bSZdzRLv)

(https://i.postimg.cc/CRTdgk8F/20210725-155736.jpg) (https://postimg.cc/CRTdgk8F)

(https://i.postimg.cc/xk9CkQgh/20210725-155140.jpg) (https://postimg.cc/xk9CkQgh)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 26, 2021, 09:35:48 PM
I see all those extra activated buds at the twig bases, but so far it doesn't look typical of mango malformation.

Alternating sprays of a Potassium Phosphite-containing product, with a penetrating Copper product, could combat Fusarium in the veins, if there is actually some there.

That seed you got at the Leprosarium?  Warts?  Cancer?  Seriously, I don't know!  Might just be a Boron deficiency.  The root and shoot actually look healthy.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: INaba on July 26, 2021, 09:52:18 PM
Yes, right looks like it horrible sick.
From horror movie. Actually it was amazing pineapple pleasure mango.
Thank you for your expertise, helpful always.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rainking430 on July 27, 2021, 01:01:37 PM
Hi Har, I want to plan a spraying methodology for next year's crop. I am determined to get something off my cursed Southern Blush especially and it's been fun experimenting with different sprays. What's your guidance on the best regime for combatting the big three (powdery mildew, anthracnose, MBBS)? Keep in mind I'm just a home owner with a few trees so I need to be able to buy chemicals in smaller retail size quantities.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: palingkecil on July 30, 2021, 11:46:50 PM

(https://i.postimg.cc/BjD9ZQBq/20210730-200401.jpg) (https://postimg.cc/BjD9ZQBq)

(https://i.postimg.cc/NKRSqCQF/20210730-200405.jpg) (https://postimg.cc/NKRSqCQF)

This year my unknown mango tree has some yellow patch in the middle.
It only shows on old leaves, the new young leaves look normal. This tree is about 3 years old, 2nd year in the ground. About 6 ft tall.
Is it lack of nitrogen? Or too much water?
Other Zill varieties grafted are doing well.
They all get the same fertilizer and same watering schedule.

Thanks everyone!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 31, 2021, 11:35:37 AM
I do not recognize that yellow pattern.  I suspect that it was caused by pests.

Normally, one should take photos of both the topside and the underside of affected leaves.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rainking430 on August 19, 2021, 02:32:20 PM
Hi Har, I have been having this ongoing problem with a Pickering. You can see in this photo where new leaves start off healthy and dark green but are beginning to fade. In time they will get really pale between the veins. Iron deficiency? I have been spraying it once a month with an old bottle of Keyplex 350 someone gave me years ago, at a rate of 1oz per gallon, but it doesn't seem to help. (link to product info: https://www.keyplex.com/product/keyplex-350/ (https://www.keyplex.com/product/keyplex-350/)) Any idea what could be causing it, and recommendations? And it didn't bear fruit this season, could this be why?


(https://i.postimg.cc/wyZVFWpJ/PXL-20210819-181451255.jpg) (https://postimg.cc/wyZVFWpJ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 19, 2021, 09:58:24 PM
Many correctives mostly affect the next flush of new growth.  Old leaves can be improved some, but only if you are using a penetrating adjuvant.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tiendadefruta on August 20, 2021, 04:06:24 AM
How old are your Zill Mango trees? Mine are around 40 years and are starting to have the same disease you show on the photos :(

I'm planning to prune them after the harvest season to see if I can refresh them and recover

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rainking430 on August 20, 2021, 01:17:50 PM
Many correctives mostly affect the next flush of new growth.  Old leaves can be improved some, but only if you are using a penetrating adjuvant.

Thanks Har. But that's the thing, this is the new growth. The old growth was even worse, and I want to stop new growth from becoming the same. I cut the plant back quite a bit back in June I think (once the last of its blooms dropped off) to get rid of much of the old nearly white leaves. I've been spraying it monthly for about a year but the new growth keeps doing the same thing. It wouldn't be the rocky soil would it?

And by "using a penetrating adjuvant" would you have a specific one in mind? Not really sure what that means but would that be why the Keyplex stuff says to add "Urea or Potassium nitrate" to increase leaf absorption? Maybe there is a better micronutrient spray you would recommend?


How old are your Zill Mango trees? Mine are around 40 years and are starting to have the same disease you show on the photos :(

I'm planning to prune them after the harvest season to see if I can refresh them and recover

This one is young actually, only planted it maybe 4 years ago.


Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on August 20, 2021, 03:34:43 PM
Many correctives mostly affect the next flush of new growth.  Old leaves can be improved some, but only if you are using a penetrating adjuvant.

Thanks Har. But that's the thing, this is the new growth. The old growth was even worse, and I want to stop new growth from becoming the same. I cut the plant back quite a bit back in June I think (once the last of its blooms dropped off) to get rid of much of the old nearly white leaves. I've been spraying it monthly for about a year but the new growth keeps doing the same thing. It wouldn't be the rocky soil would it?

And by "using a penetrating adjuvant" would you have a specific one in mind? Not really sure what that means but would that be why the Keyplex stuff says to add "Urea or Potassium nitrate" to increase leaf absorption? Maybe there is a better micronutrient spray you would recommend?


How old are your Zill Mango trees? Mine are around 40 years and are starting to have the same disease you show on the photos :(

I'm planning to prune them after the harvest season to see if I can refresh them and recover

This one is young actually, only planted it maybe 4 years ago.

Strange, how are you feeding it and do you have an idea about your soil analysis.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 20, 2021, 09:48:15 PM
Fertilizers such as Urea and Potassium Nitrate, do improve penetration of micro-nutrients;  however, I was speaking of adjuvants.

Kinetic is a good wetter-spreader-penetrant.  So is Pentra-Bark.  There are many others that I have not tried.  Be sure that the product is allowed on food plants.  Availability of products varies per state, and per in-trade credentials or per consumer retail.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rainking430 on August 21, 2021, 02:19:10 PM
Strange, how are you feeding it and do you have an idea about your soil analysis.

3 times a year (around Jan, May, and Sep), I sprinkle a little 0-0-50 around the drip line and then water it in. I also spray with Keyplex 350 monthly. it also has cypress mulch around it. This is same as my other trees which are doing fine, including one just a few steps from it in the same type of soil I think. I have not done a soil analysis unfortunately.

Fertilizers such as Urea and Potassium Nitrate, do improve penetration of micro-nutrients;  however, I was speaking of adjuvants.

Kinetic is a good wetter-spreader-penetrant.  So is Pentra-Bark.  There are many others that I have not tried.  Be sure that the product is allowed on food plants.  Availability of products varies per state, and per in-trade credentials or per consumer retail.

Thanks for the info Har I will check those out.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on August 22, 2021, 04:54:42 PM
Strange, how are you feeding it and do you have an idea about your soil analysis.

3 times a year (around Jan, May, and Sep), I sprinkle a little 0-0-50 around the drip line and then water it in. I also spray with Keyplex 350 monthly. it also has cypress mulch around it. This is same as my other trees which are doing fine, including one just a few steps from it in the same type of soil I think. I have not done a soil analysis unfortunately.


I'm guessing it's a magnesium deficiency. Try to give it some Magnesium Sulfate.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rainking430 on August 23, 2021, 09:35:52 AM
I'm guessing it's a magnesium deficiency. Try to give it some Magnesium Sulfate.

Maybe so but my monthly spray includes magnesium. Thanks for the suggestion though. I may have to try what Har is suggesting with including an additive in the spray to get it to absorb better into the leaves.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mattyboydesigns on August 30, 2021, 09:18:41 AM
Any guesses as to what's going on with my sweet tart and how to treat.
(https://i.postimg.cc/PLVyxSS2/IMG-20210829-185625338.jpg) (https://postimg.cc/PLVyxSS2)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Seanny on August 30, 2021, 07:00:22 PM
Bird’s poop that spattered onto the stem?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 31, 2021, 11:32:23 AM
Mango Bacterial Black Spot.  Spray with Copper to reduce spread of MBBS.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MANGOSCOPE on August 31, 2021, 01:33:42 PM
Mango Bacterial Black Spot.  Spray with Copper to reduce spread of MBBS.


To reduce Mango BBS with copper, one may need frequent applications. Before, going through the process one should ascertain their current micronutrient analysis specially "Copper". Foliar spray shows little more promising in Alkaline soil than the banding/side dressing or brodcasting. copper toxicity in plants causing symptoms such as chlorosis and necrosis, stunting, leaf discoloration, and inhibition of root growth.
Copper impedes lignin synthesis in Toxic level which in turn interferes the process of photosynthesis, essential for plant respiration thus plant metabolism of carbohydrates and proteins are depleted.
To reduce spread or to contain to some extent we can spray Copper Oxychloride or Copper Oxide in a recommended doses.

KNOWING MANGO BACTERIAL BLACK SPOT IN FLORIDA:

https://edis.ifas.ufl.edu/publication/HS1369


ASSESSING COPPER THRESHOLDS FOR
PHYTOTOXICITY AND POTENTIAL DIETARY
TOXICITY IN SELECTED VEGETABLE CROPS:

https://irrec.ifas.ufl.edu/irsws/History%20Publications/1/JESHYang2002.pdf
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on September 01, 2021, 11:05:35 AM
My 1 yr old Neelam graft on Kent rootstock hasn't been doing great, at all. It's getting the same fertilizer regimen as several other seedlings, all others doing fine.
It's had two flushes this season, but the leaves are up-turned and the trunk is thin, spindly-looking. The graft union isn't great, but seems well-healed. The rootstock has black pocks all over it (interestingly, none on the scion); guessing that's MBBS, but I also had a bad problem with anthracnose when we were getting rains nearly every day for the last two months. Maybe it's scion/rootstock incompatibility, but I'm thinking it's something wrong with the rootstock.
(https://i.postimg.cc/LgvRtVN8/IMG-3564.jpg) (https://postimg.cc/LgvRtVN8) (https://i.postimg.cc/qgHcgHS7/IMG-3565.jpg) (https://postimg.cc/qgHcgHS7) (https://i.postimg.cc/Lgm2gWkW/IMG-3566.jpg) (https://postimg.cc/Lgm2gWkW)

Does it look salvageable? I'm hoping to see some swelling buds before the grafting season is over, I'd feel better grafting onto another rootstock. It seems completely stalled/stunted at this point. Maybe I should hit it with fish fertilizer every week or so to see if that kicks it into gear.



Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 01, 2021, 02:32:09 PM
If the spots on the trunk are depressed, they are likely anthracnose;  if the spots are raised, they are likely Mango Bacterial Black Spot.

Copper sprays can fight the further spread of either disease.  Potassium Silicate spray can toughen the surface.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on September 01, 2021, 07:49:30 PM
Thanks Har. The centers of the spots are all definitely sunken, the edge/rim around the sunken spots are slightly raised, though. A few of the spots also have a slight yellow halo. The more I look at the state of the rootstock, the more I want to get a Neelam scion off it asap.

Any recommendations on forcing it to push new growth? It's getting a monthly time-released fertilizer with micros.
Would girdling the trunk 6" or so below the top do anything?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on September 01, 2021, 07:58:51 PM
If the dark spot on the graft union upper right bevel is sap, I wouldn't wait!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mattyboydesigns on September 02, 2021, 09:10:08 AM
Mango Bacterial Black Spot.  Spray with Copper to reduce spread of MBBS.

Thank you
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Tony714 on September 02, 2021, 12:23:21 PM
Hi,
I bought this Lemon Zest from parking lot sale.  It looks like graft on Manila rootstock.   I bought it late Apr but leaves like this.  Can you please let me know what may be and how to fix it?  I
I appreciate it.

Soil - perlite,  sand, potting soil
Sprayed Organocide

(https://i.postimg.cc/Ppq3H9PQ/20210829-082906.jpg) (https://postimg.cc/Ppq3H9PQ)

(https://i.postimg.cc/sGQTQWPB/20210829-082918.jpg) (https://postimg.cc/sGQTQWPB)

(https://i.postimg.cc/PP1MgTSk/20210829-082926.jpg) (https://postimg.cc/PP1MgTSk)

(https://i.postimg.cc/hQT9R1b0/20210829-082948.jpg) (https://postimg.cc/hQT9R1b0)

(https://i.postimg.cc/3kJDtT61/20210829-083005.jpg) (https://postimg.cc/3kJDtT61)

(https://i.postimg.cc/dkmyWVqW/20210829-083047.jpg) (https://postimg.cc/dkmyWVqW)

(https://i.postimg.cc/NyCVKQhz/20210814-101243.jpg) (https://postimg.cc/NyCVKQhz)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 02, 2021, 03:01:43 PM
Potassium deficiency, and other deficiencies.  Also may have been exposed to urea, which mangos mostly don't like.

Last couple of photos seem to show the leaf form of MBBS.
























Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MANGOSCOPE on September 02, 2021, 05:24:00 PM
Thanks Har. The centers of the spots are all definitely sunken, the edge/rim around the sunken spots are slightly raised, though. A few of the spots also have a slight yellow halo. The more I look at the state of the rootstock, the more I want to get a Neelam scion off it asap.

Any recommendations on forcing it to push new growth? It's getting a monthly time-released fertilizer with micros.
Would girdling the trunk 6" or so below the top do anything?


Going back to Basics: To regulate plants normal vigor.
==============================================

1) Sunlight: Needs 6-8 hours of Sunlight

2) Watering: Frequent watering kills more mango trees than less watering. Rely more on rain water than sprinkler or other irrigation systems unless, there is a serous drought going on. For established mango trees watering isn't required.

3) Fertilizers: Try to go with 10-10-10(having  primary and secondary macronutrients with micro) to boost vegetative growth, root growth and overall plant health and vigor,1-2 months apart, in a recommended dose. If you have been using 8-3-9, stop that for few months. 

4) Pesticides: Use it, depending on the disease condition.

5)Soil condition: Test soil ph and correct it if it is adverse for the growth. Mangoes do like little alkaline soil.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on September 03, 2021, 09:56:02 AM
1) Sunlight: Needs 6-8 hours of Sunlight

2) Watering: Frequent watering kills more mango trees than less watering. Rely more on rain water than sprinkler or other irrigation systems unless, there is a serous drought going on. For established mango trees watering isn't required.

3) Fertilizers: Try to go with 10-10-10(having  primary and secondary macronutrients with micro) to boost vegetative growth, root growth and overall plant health and vigor,1-2 months apart, in a recommended dose. If you have been using 8-3-9, stop that for few months. 

4) Pesticides: Use it, depending on the disease condition.

5)Soil condition: Test soil ph and correct it if it is adverse for the growth. Mangoes do like little alkaline soil.

Thanks for the suggestions! I am using a soilless mix with pine bark fines. I thought mangos preferred slightly acidic soils, but tolerate slight variance on either side of neutral.
I should get a good 10-10-10 for use with seedlings. I don't think my 8-3-9 with micros feeds the young ones enough.

As luck would have it, the Neelam is just starting to push again as of this morning; looks like I will get a scion off of it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MANGOSCOPE on September 03, 2021, 11:50:42 AM
No problem Jakefruit. You're welcome.
If you use solely Pine bark, the ph of which is slightly acidic for mangoes around 4.0 -5.0. And of course, lot of fruit trees love that like Lychees. So, you may consider increasing the ph a bit around 6.0-6.5. By adding lime,  probably, it will solve the ph issue though...
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on September 03, 2021, 06:18:27 PM

(https://i.postimg.cc/BjD9ZQBq/20210730-200401.jpg) (https://postimg.cc/BjD9ZQBq)

(https://i.postimg.cc/NKRSqCQF/20210730-200405.jpg) (https://postimg.cc/NKRSqCQF)

This year my unknown mango tree has some yellow patch in the middle.
It only shows on old leaves, the new young leaves look normal. This tree is about 3 years old, 2nd year in the ground. About 6 ft tall.
Is it lack of nitrogen? Or too much water?
Other Zill varieties grafted are doing well.
They all get the same fertilizer and same watering schedule.

Thanks everyone!

Just read this today and thought of you.


(https://i.postimg.cc/064SzvSt/image.png) (https://postimg.cc/064SzvSt)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on September 07, 2021, 01:13:13 PM
Har and Mark,

I always bring the brain teaser questions.

So I have few 1 year old mango seedlings in ground that showed at some point Phosphorus deficiency (8.4 pH/leaching sandy soil/ 90% Calcium). So for the last 5 weeks, I have been giving 2 Tbsp of 18-18-18 and that helped them tremendously. The seedling that had showed the least deficiency is now showing what appears to be a toxicity as described in this paragraph.

Quote
Mango trees appear to be quite sensitive to heavy phosphorus fertilization accumulating as much as 0.84 per cent phosphorus in leaves on dry weight basis against 0.08 – 0.175 per cent in normal leaves. This excessive phosphorus resulted in a spotting of mature leaves in fall, first appearing on the lower surface, but later on also on the upper surface.

Necrotic areas also developed on the margins of some leaves. Leaves become chlorotic and shed heavily. It also causes some drying of shoots.

How would you deal with this problem please? I have Potassium Nitrate for next week fertilizer dose and I also have Calcium Nitrate. Can I give some calcium to lock up some Phosphorus?

Thanks

Edit: One week I remembered that I skipped 18-18-18 but gave about 75gr of DAP and 75gr of Potassium Nitrate  :'( :'( :'(
Edit: Just gave 20gr of Sequestrene and 15gr of EDTA chelated mix with 0.6% Zinc.
Edit: Added an image, after cleaning all the older leaves that dried up and died already.




(https://i.postimg.cc/dhzVMPCZ/image.png) (https://postimg.cc/dhzVMPCZ)  (https://i.postimg.cc/sMzTT16M/1631123015874.jpg) (https://postimg.cc/sMzTT16M)
(https://i.postimg.cc/n9jnS3LG/image.png) (https://postimg.cc/n9jnS3LG)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on September 17, 2021, 04:44:10 PM
Har and Mark,

I always bring the brain teaser questions.

So I have few 1 year old mango seedlings in ground that showed at some point Phosphorus deficiency (8.4 pH/leaching sandy soil/ 90% Calcium). So for the last 5 weeks, I have been giving 2 Tbsp of 18-18-18 and that helped them tremendously. The seedling that had showed the least deficiency is now showing what appears to be a toxicity as described in this paragraph.

You sure don't need any more Ca. Saltpeter (14-0-43) might be a good food but your faves still need micros.  Contrary to Fl. growers I push my young mangos with a moderate to high N food.  Osmocote Indoor/Outdoor Plus would be good choice for your younguns.

I gave up the high P teat long ago.  Most of my foods are low P like a Peters 25-5-15.  Also high P foods contribute to long internodes, legginess.  Most blame it on too much N.  Not so.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on September 19, 2021, 08:09:40 PM
I gave up the high P teat long ago.  Most of my foods are low P like a Peters 25-5-15.  Also high P foods contribute to long internodes, legginess.  Most blame it on too much N.  Not so.

Thanks Mark, but do you think a low P will work for me with that kind of pH and 90% calcium. I'm still currently at the stage of getting seedlings established.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on September 20, 2021, 03:11:09 PM
I gave up the high P teat long ago.  Most of my foods are low P like a Peters 25-5-15.  Also high P foods contribute to long internodes, legginess.  Most blame it on too much N.  Not so.

Thanks Mark, but do you think a low P will work for me with that kind of pH and 90% calcium. I'm still currently at the stage of getting seedlings established.

High P foods can induce micros deficiencies.  Seedlings need plenty of N, not P.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: CarloGolfer on September 20, 2021, 06:31:09 PM
Lots of flies and eggs. Are these bad? Nothing to worry about? This is my Glenn mango. It seems to be frozen in time. It appeared to be about to put out a big flush, but the little nubs have been the same for at least a month
 Meanwhile all my other trees are pushing like crazy and have no flies.
(https://i.postimg.cc/R3swsS4h/20210920-181252.jpg) (https://postimg.cc/R3swsS4h)

(https://i.postimg.cc/672QKtCy/20210920-181257.jpg) (https://postimg.cc/672QKtCy)

(https://i.postimg.cc/7GSYC9s4/20210920-181338.jpg) (https://postimg.cc/7GSYC9s4)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 20, 2021, 09:04:23 PM
Probably mango-scale eggs.   
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Mark in Texas on September 23, 2021, 01:06:45 PM
Agree with Har, those look like eggs.  Hard to beat a thorough spray of Bonide All Seasons Hort. oil.  If I have a pest like mealybugs (which I did) I add 1 tsp/gal. of Bifen to it.  For the organic purists bifenthrin and permethrin and their sista products are about as non toxic to animals as it gets.  However they'll knock down a big yellow grasshopper within a minute.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: CarloGolfer on September 23, 2021, 04:56:59 PM
Thanks for the advice. I'll grab the product on my way home. Have a nice evening!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on September 24, 2021, 01:50:15 PM
I'm confused. Does this look like a disease or a nutritional issue please.


(https://i.postimg.cc/SJCKm2z0/99-AB366-B-82-FF-4-FF3-AC9-C-D79-DFC2-F97-D1-1-105-c.jpg) (https://postimg.cc/SJCKm2z0) (https://i.postimg.cc/QB48fcv7/5518-BAFF-51-E9-4521-8-BD5-FDAFECDA9-F4-E-1-105-c.jpg) (https://postimg.cc/QB48fcv7)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on October 01, 2021, 10:47:52 AM
What do you think about this combo please. (EDTA Micros)


N-   P-    K-   Mg-  S-  Z-    Mn
17- 12-  12-  3.8- 13- 0.3- 0.2

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 01, 2021, 08:38:37 PM
If the soil isn't already high in Ca, B, and Fe, you will also need to add those.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 01, 2021, 08:48:47 PM
Those leaves probably have a total-salts burn;  however, they could have some kind of powdery mildew.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on October 02, 2021, 01:51:58 PM
If the soil isn't already high in Ca, B, and Fe, you will also need to add those.

Obrigado!

This is just a suggestion for the ratios that I could make from fertilizers that I already have. My soil is 8.4pH/90% calcareous/highly leaching sand.

I use Sequestrene for Fe, but my B is low! Could you please suggest a ratio (even with modifying what I posted earlier), my goal is to come up with a fertilizer that I use every time I water to simulate a slow release fertilizer for young seedlings < 1.5 years old.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 02, 2021, 08:53:46 PM
For fully coated, slow-release fertilizer, to apply twice a year, it could have up to 0.3% Boron.  For uncoated granular, up to 0.22%.  For weekly liquid application, I don't know, as I never do that.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Lovetoplant on October 04, 2021, 02:43:42 AM
Har, is kocide3000 good to use on mango trees?  Can it be use as preventive or only use when disease symptoms appear? I live close to the beach, fog and high humidity are very common. Thank you
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 05, 2021, 02:00:28 PM
Kocide (Copper Hydroxide) fungicide/bactericide works mainly as a preventive, when sprayed before symptoms appear.  It has been used on mango trees
in conventional agriculture since at least the 1970's, usually tank-mixed with mancozeb/Manzate.  Mancozeb now gets a lot of bad press from California.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Julie on October 05, 2021, 03:32:02 PM

(https://i.postimg.cc/MMGSMYTT/0-B68-B8-EF-4-EE2-4-B34-ABF2-B2-A5-D09-AE817.jpg) (https://postimg.cc/MMGSMYTT)

(https://i.postimg.cc/xNJVgTLV/4020-A570-22-C8-4-B60-B50-C-53797193916-F.jpg) (https://postimg.cc/xNJVgTLV)

Black spots on the branches of a Glenn mango tree. The black spots cannot be scratched off and have little white dots on them. What is this?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: INaba on October 06, 2021, 08:14:23 AM
Can I still prune and tip mango trees?
How late we can do tipping mango branches?
Thanks,  irene
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 06, 2021, 09:51:08 AM
Fungus.  Spray with Copper, repeatedly.  In cool time of year, use spray-oil.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 06, 2021, 09:58:45 AM
INaba,

Removal of entire branches, to open up the canopy, can be done at any time of year, except during flowering (just because of difficulty avoiding damage to the remaining flowers).  Open canopies are more productive and less diseased.

Tipping should be done soon after harvest;  if done later, next year's flowering may be cancelled (but not always).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: INaba on October 06, 2021, 12:26:32 PM
Har Thanks a lot for clarifying this situation for me.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Julie on October 06, 2021, 12:37:42 PM
Fungus.  Spray with Copper, repeatedly.  In cool time of year, use spray-oil.

What type of oil do you recommend? Neem oil? Do I just need to apply the oil & copper to the fungus spots or to the entire tree? Is this going to get worse & kill the tree?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Lovetoplant on October 06, 2021, 02:19:39 PM
Kocide (Copper Hydroxide) fungicide/bactericide works mainly as a preventive, when sprayed before symptoms appear.  It has been used on mango trees
in conventional agriculture since at least the 1970's, usually tank-mixed with mancozeb/Manzate.  Mancozeb now gets a lot of bad press from California.

Thank you Har.  So can I spray my tree as often as I want to, regarding diseases prevention?
If diseases start to appear, what products would you recommend? I am new to mango.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 06, 2021, 05:29:19 PM
Julie,

Spot spray the visible problem and close by.  In weather conducive to the spray's staying wet for half an hour or so, use either Neem Oil or Spray-Oil, per label directions.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Julie on October 06, 2021, 06:29:04 PM
Julie,

Spot spray the visible problem and close by.  In weather conducive to the spay's staying wet for half an hour or so, use either Neem Oil or Spray-Oil, per label directions.

Should I use neem oil only now since it's the cooler season or spray both neem and copper together? Also how often should I repeat the sprays?  Thank you!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Homeby5 on October 26, 2021, 05:19:57 PM
Look at these leaves? Two of my trees look like this? I haven't fertilized in about 4 months and we have got a lot of rain. I am in Keys. Should I be concerned?


(https://i.postimg.cc/hQ8jx82p/20211024-150459.jpg) (https://postimg.cc/hQ8jx82p)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 27, 2021, 01:52:31 PM
Use slow-release 8-2-12 palm fertilizer.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Homeby5 on October 29, 2021, 01:19:45 PM
Here is another pic of another Mango Tree. With all the rain...do you think it's fungus?

(https://i.postimg.cc/T59yzg93/20211029-101107-resized.jpg) (https://postimg.cc/T59yzg93)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 29, 2021, 01:30:45 PM
Increase Potassium, spray with Copper, and monitor for thrips and mites through Fall and Winter.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on October 30, 2021, 01:59:47 PM
Do you have any idea on how much Chloride is beneficial and not harmful in irrigation water please? All fertilizers I use are Cl free.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 30, 2021, 09:05:29 PM
I have not found any clear answers about mangos' tolerance of Chloride or Sodium, except that tolerance varies tremendously from one root-stock to another, as well as per scion grafted on those different root-stocks.  If you can get some 13-1 seeds(or 13/1), that might be of help.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on October 31, 2021, 07:08:07 AM
I have not found any clear answers about mangos' tolerance of Chloride or Sodium, except that tolerance varies tremendously from one root-stock to another, as well as per scion grafted on those different root-stocks.  If you can get some 13-1 seeds(or 13/1), that might be of help.

Great answer! Do you have an idea about irrigation water Chloride range that is used without showing any damage? I'm suspecting that 5ppm in my water analysis is not enough.
(https://i.postimg.cc/Yv8tDGKH/water-test.png) (https://postimg.cc/Yv8tDGKH)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 31, 2021, 12:34:18 PM
Of no concern.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Victoria Ave on October 31, 2021, 01:29:21 PM
The last flush of growth on my Valencia Pride has started showing yellow between veins. It was looking healthy before. I would usually spray with Southern AG spray as it looks like mag, zinc, iron deficiency.

However, I still have fruit hanging on the tree. Should I just spray after harvest, or should I throw down my iron sulfur pellets which I would usually do around this time but I've heard not to fertilize the tree when nearing harvest.

Thanks!


(https://i.postimg.cc/9DdVj8s2/20211031-101123.jpg) (https://postimg.cc/9DdVj8s2)

(https://i.postimg.cc/t1Djs1Xm/20211031-101153.jpg) (https://postimg.cc/t1Djs1Xm)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 31, 2021, 10:27:23 PM
While the fruits are on, fertilizing with Nitrogen can make the fruits watery and prone to internal breakdown.

I don't know of reasons not to apply light amounts of other nutrients when the fruits are on.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on November 01, 2021, 07:42:56 PM
Are there nutrients that tend to suffer most as the weather cools down?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Paquicuba on November 02, 2021, 01:32:58 PM
My fruit punch tree is stunted. Need the experts to please shed a light on what the heck is happening to it. As you can see in the images, it tries to flush, but the buds simply dry out. Thanks so much for the help!!

(https://i.postimg.cc/MMcRTrRy/IMG-2347.jpg) (https://postimg.cc/MMcRTrRy)

(https://i.postimg.cc/1Vwq0nvX/IMG-2348.jpg) (https://postimg.cc/1Vwq0nvX)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 02, 2021, 08:49:31 PM
Vegetative form of Mango Malformation, a Fusarium fungus in the veins.  This infection spreads easily in graftwood and on clippers and pruning saws, etc.

Cut those branches off, about a foot below the affected spots, then put the visibly infected wood in the city trash bin, so that it doesn't get composted; put the normal-looking pruned-off branches under the same tree.  Thoroughly sanitize saw and gloves--- such as with 91% rubbing alcohol, then hydrogen peroxide, then mid-day sun.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Paquicuba on November 03, 2021, 09:51:34 AM
Thanks so much Har!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: kyrikan on November 03, 2021, 05:32:57 PM
hello guys, I would like some help. My mango trees seem to have a disease or a nutrient deficiency and here in Crete(Greece) where i live i can't find anyone who knows about mango trees. The first one is a seedling and the second one is a grafted tree. I have them from February and this started to happen to the new growth at September(when the weather became a little bit colder).
(https://i.postimg.cc/06DvJqDF/IMG-3995.jpg) (https://postimg.cc/06DvJqDF)

(https://i.postimg.cc/XXQb5LBj/IMG-3997.jpg) (https://postimg.cc/XXQb5LBj)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 04, 2021, 10:47:36 AM
Looks like the start of Powdery Mildew and Magnesium deficiency.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: kyrikan on November 04, 2021, 01:01:04 PM
Thank you so much for the answer!!!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Polypterus on November 15, 2021, 08:32:10 AM
Hey folks, this is my first time keeping mangos, so I was wondering whether my pickering has a disease or nutrient deficiency, or if these are just old leaves:

(https://i.postimg.cc/Kk00J5VV/20211115-082653.jpg) (https://postimg.cc/Kk00J5VV)

(https://i.postimg.cc/c6J96VtN/20211115-082707.jpg) (https://postimg.cc/c6J96VtN)

(https://i.postimg.cc/PNF6D21v/20211115-082714.jpg) (https://postimg.cc/PNF6D21v)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 15, 2021, 09:54:12 AM
Powdery Mildew.

From seed cannot be a 'Pickering.'  Must have a grafted tree of 'Pickering' to have that variety.  A seedling from 'Pickering' is a new kind.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Polypterus on November 15, 2021, 11:47:05 AM
Powdery Mildew.

From seed cannot be a 'Pickering.'  Must have a grafted tree of 'Pickering' to have that variety.  A seedling from 'Pickering' is a new kind.
Thanks for the info, I'll treat it asap.

The tree is still quite small, but it is a grafted pickering, not a seedling.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rainking430 on November 17, 2021, 01:38:35 PM
Hi Har, what is causing this deformation of newer leaves on a young sweet tart?


(https://i.postimg.cc/6T7Q1tSp/PXL-20211117-183441155.jpg) (https://postimg.cc/6T7Q1tSp)

(https://i.postimg.cc/5H7xnRSz/PXL-20211117-183454940.jpg) (https://postimg.cc/5H7xnRSz)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Hermitian on November 17, 2021, 03:53:42 PM
In my location mango have few pests, and those only arise when fruit is about halfway ripe. One of them is rats which I control with JT Eaton bait blocks in bait stations. The others are insects brought by ants - which are ubiquitous in this region. To reduce that problem I prune the trees to keep downward branches from touching the ground and spray the tree with one of the ACP insecticides I have on hand when the insects appear (https://plantsthatproduce.com/docs/acp.pdf). I do not use the lazy approach of tanglefoot etc. because it girdles the tree.

There is very little disease pressure here for mango. Occasionally sooty mold will arrive after an overnight marine layer fog or mist. The fungicide Abound is a very good control for that on Mango, White Sapote, brambles, and currents.

For pH control and nutrition I fertigate with N-pHuric + a water soluble with micronutrients, for which the combination works out to pH ~6.2 and NPK ratios of 10:2:6.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 17, 2021, 08:43:38 PM
Rainking,

First picture shows mechanical damage, from wind, lizard claw, etc.

Second picture:  ??
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 17, 2021, 09:07:49 PM
Hermitian,

I have no idea what "ACP" means.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: rainking430 on November 18, 2021, 10:34:46 AM
Rainking,

First picture shows mechanical damage, from wind, lizard claw, etc.

Second picture:  ??

Ok thanks Har, at least your comment rules out the likelihood of disease. Come to think of it some guys were here mowing the other day so maybe their mowers flung some debris into the leaves in the first pic. And maybe this also happened in the past to the leaves in the second pic.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Hermitian on November 18, 2021, 01:45:55 PM
Hermitian,

I have no idea what "ACP" means.

Asian Citrus Psyllid, the vector of citrus greening disease.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on November 26, 2021, 07:50:08 PM
Weevils.  Eating my Raw Honey, Peach Cobbler less so.  M4, Maha, Cogs look ok, minor nibbles possibly from something else.
Can't tell for sure which weevil type, white & falls (edit- they do fly) not fly away.

Sprayed Spinosad per label 1 tablespoon per quart on all tonight.  Neem had zero effect the past 2 weeks.  We shall see.  Anything better if needed?

Doubt i'm alone having weevil issues, thanks.
Ed

Update- morning after i saw 1 on Raw Honey & M4.  Today (3 days after spraying) i saw none!
Raw Honey took the worst hit from weevils, new growth starting looks good.
Also sprayed 4 citrus trees.  Looking good.  Thought i'd pass this on.
Ed

Update Dec 4- rinsed all trees off yesterday & by dinner time i saw weevil eating raw honey.
And they DO fly.  Was bringing leaf with weevil to take photo & flew away.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on December 15, 2021, 10:17:48 AM
Spinosad & weevil update-  i'll say it worked.  Wish i discovered it before a tree got half eaten.

More importantly- a warning for using Spinosad products this time of yr.
My guess' it'll kill most pollinators too which you certainly don't want to do this time of yr.
I felt obligated to say that, seems to be a great product, use with caution at a minimum.

Ed
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on December 15, 2021, 10:30:24 AM
Now that my mango trees are in the greenhouse, I'm seeing some scale on them. What is the best course of action? I have neem oil - would that work? Thanks.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on December 15, 2021, 10:52:42 AM
I've heard you can dip a q-tip in alcohol and touch each one on its back and it would kill them. I've never tried this. What I've done when I've found scale on my mango trees is manually remove them with a fingernail. A little time consuming, but I don't much mind sitting by a mango tree.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 15, 2021, 10:16:39 PM
Neem oil suffocates the scale crawlers.  Maybe more.  Observe label intructions about temperature limits, there in your greenhouse.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: impatientgardener on December 17, 2021, 03:15:15 PM
First two pics are Maha Chanock and third is Cac. Is this fertilizer burn, PM, or what? I am definitely guilty of over fertilizing

I'm in Tomball Tx, 9a.

Thanks for any help!

(https://i.postimg.cc/k2ppbL7h/maha1.jpg) (https://postimg.cc/k2ppbL7h)

(https://i.postimg.cc/Cd0S5nPn/maha2.jpg) (https://postimg.cc/Cd0S5nPn)

(https://i.postimg.cc/xcTQyDS0/cac1.jpg) (https://postimg.cc/xcTQyDS0)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 17, 2021, 07:54:16 PM
It looks like salt burn / fertilizer burn.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: impatientgardener on December 24, 2021, 03:26:26 PM
Coconut Cream flushing new growth. The young tree seems healthy but new growth seems irregular. I typically water w rainwater 2x/wk, maybe that's not enough since they still reside in their original 3g container. Just recently added minute amounts of greensand and gypsum (3-4 Tbsp per 3g tree). Not panicking but I would love to hear y'all's thought process. Normal or not?

I have new growth pics and pics of an established leaf possibly symptomatic.

I am sorry if this situation has already been covered. Thanks for any information!

(https://i.postimg.cc/1gm1C3G2/new1.jpg) (https://postimg.cc/1gm1C3G2)

(https://i.postimg.cc/LgZcYYSY/new2.jpg) (https://postimg.cc/LgZcYYSY)

(https://i.postimg.cc/pywbNZQD/new3.jpg) (https://postimg.cc/pywbNZQD)

(https://i.postimg.cc/bZP7rwBr/new4.jpg) (https://postimg.cc/bZP7rwBr)

(https://i.postimg.cc/KKqw0rv3/new5.jpg) (https://postimg.cc/KKqw0rv3)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: impatientgardener on December 24, 2021, 04:16:04 PM
Anthracnose?

(https://i.postimg.cc/Bt1nmK0S/C2-CBDB11-58-F5-4207-A1-AD-A99-AADE24-B6-A.jpg) (https://postimg.cc/Bt1nmK0S)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 30, 2021, 01:11:16 PM
On tender leaves, looks like Anthracnose.

On trunk, looks like Mango Bacterial Black Spot.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: roblack on January 12, 2022, 09:32:32 PM
Where can one send mango leaves for nutritional analysis and to identify deficiencies?

Apologies if this has been posted already, couldn't find.

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 15, 2022, 08:18:04 PM
There are two or three older threads about labs here on the Forum.   A lot about Spectrum Analytic.  Waters Agricultural is good analysis too.

Several other good ones also.

Be wary of accepting recommendations for Citrus to use on Mangos--- can be quite wrong.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Pan Dulce on January 16, 2022, 10:28:25 AM
Has anyone had any success using potassium bicarbonate to treat powdery mildew or anthracnose on mango flowers? 

It is part of my shoulder season rotation for treating powdery mildew and some other pathogens in my mist beds at work.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Pan Dulce on January 16, 2022, 10:34:59 AM
Fliptop

The alcohol on Q-tip process is very effective on numerous insects, especially mealybugs when the outbreak first starts, or they are on just a few specimens.

Har

I appreciate all the mango knowledge your passing along!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 16, 2022, 11:56:25 AM
Yes, Potassium Bicarbonate is useful.  I include in some mixes--- haven't tried it alone.  It raises pH, so don't include with products that are made ineffective by high pH.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Emirza24 on January 17, 2022, 09:49:33 PM
Har,
please advise me how can I protect my mango trees from mealy bugs?
Thanks in advance.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 18, 2022, 12:00:22 PM
Castille Soap Spray, or other potassium salts of fatty acids.

Oil spray, such as neem oil.

Azadirachtin-containing product.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Emirza24 on January 18, 2022, 10:10:09 PM
Thanks for the reply Har.
Do I need to spray neem oil on the whole tree or just the trunk? I have about twenty trees and they are more than ten feet tall. Mealy bugs will start attacking my trees next month once the weather gets a bit warmer.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 19, 2022, 11:54:28 AM
Spray on bugs.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Lovetoplant on January 19, 2022, 08:16:20 PM
Har, what disease/nutrient deficiencies on the mango leaves? Pictures show top of the canopy and bottom of the leaves.  Thank you
(https://i.postimg.cc/yWzV52qj/IMG-20220118-111200033-HDR.jpg) (https://postimg.cc/yWzV52qj)


(https://i.postimg.cc/0M0hhWmX/IMG-20220118-111212027-HDR.jpg) (https://postimg.cc/0M0hhWmX)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 19, 2022, 09:31:41 PM
Perhaps a systemic disease, coming up from soggy soil?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Lovetoplant on January 20, 2022, 12:18:06 AM
Perhaps a systemic disease, coming up from soggy soil?

This is happening to most of my 20 inch tall, 50+ seedlings inside the greenhouse. So you do not think it is powdery mildew, correct?

Any systematic fungicide/bacteriacide do you recommend?
 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 21, 2022, 05:57:26 PM
Perhaps Organocide Plant Doctor, or similar Potassium Phosphite.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Lovetoplant on January 22, 2022, 01:23:58 PM
Perhaps Organocide Plant Doctor, or similar Potassium Phosphite.

Thank you Har.  Will give Monterey GardenPhos a try.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dm on February 11, 2022, 04:54:56 AM
Three of my small, young mango trees have brown/black and curled edges and tips.  Some have black spots.
I have definitely seen scale too.
Another tree (no pic) looks like it has black soot on it.

Thanks


PICKERING:

(https://i.postimg.cc/BLz5cF6k/IMG-5267.jpg) (https://postimg.cc/BLz5cF6k)



HONEY KISS

(https://i.postimg.cc/z3RTYV3D/IMG-5268.jpg) (https://postimg.cc/z3RTYV3D)

(https://i.postimg.cc/nXnmm22M/IMG-5270.jpg) (https://postimg.cc/nXnmm22M)



PPK:

(https://i.postimg.cc/bSvMdk55/IMG-5260.jpg) (https://postimg.cc/bSvMdk55)

(https://i.postimg.cc/F78qsfVP/IMG-5261.jpg) (https://postimg.cc/F78qsfVP)

(https://i.postimg.cc/PCD7Lt6d/IMG-5263.jpg) (https://postimg.cc/PCD7Lt6d)

(https://i.postimg.cc/v1dNfpjf/IMG-5264.jpg) (https://postimg.cc/v1dNfpjf)



Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 11, 2022, 01:32:55 PM
Powdery Mildew.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dm on February 11, 2022, 02:57:21 PM
Thank you much, Har!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pineislander on February 24, 2022, 07:50:12 AM
A friend has two mango trees two years old with similar problems, one Mallika and one Glenn. Zone ios 10A east Lee County slightly inland, they had a light frost a few eeeks ago. Each appear to be from Zill nursery based on graft type. Each are planted identically in full sun & the owner used Lee County municipal compost to create a planting mound, and mulched with purchased Melaleuca mulch. They receive well water from popup sprinklers in the lawn. They are showing very slow growth and even before the recent frost had some die back of top growth. Almost all leaves have rounded tips. They may have gotten no fertilization the owner didn't mention using any.

The trees were both staked with 2 inch posts which appear to be treated wood. Could that be part of the problem?

What would you recommend to get these trees growing properly?

(https://i.postimg.cc/GHR06f07/128.jpg) (https://postimg.cc/GHR06f07)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Orkine on February 24, 2022, 07:10:52 PM
Are the roots in soil or compost?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pineislander on February 24, 2022, 08:59:14 PM
Are the roots in soil or compost?
I didn't dig around but thinking about it today I expect the roots have mainly proliferated in the compost. That was probably a mistake but actually would have expected the mango roots to eventually get into soil, maybe they didn't. I am still wondering what the person could do at this point? Maybe cut around the tree once rains start put some sand around the root ball and hope it recovers? Dig it out and plant in sand? There is plenty of room on the property.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 25, 2022, 06:24:32 PM
Typical decline from planting in compost.  Not likely to improve until pruning, digging up, and planting on a sandy mound.

Give that compost to bananas;  they will love it.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Epicatt2 on February 26, 2022, 08:36:00 AM
Typical decline from planting in compost.  Not likely to improve until pruning, digging up, and planting on a sandy mound.

Give that compost to bananas;  they will love it.

Well Har,

I repotted my four mangos last year into 5-gallon & 7-gallon pots in a 1:1:1 mix of
coarse builders sand : milled sphagnum : leaf mold (this latter which I dug from my flowerbed around the azaleas)

They mangos all are currently growing ok and have just begun pushing inflorescences now as of this week.

I did fertilize them a few weeks ago with some 3-3-5, but very lightly.

I haven't seen any pests or problems presenting on the leaves or with their growth so I'm hoping that the mix they are in and the light fertilzing and minimal watering I have been giving them is about right and proper for mangos of this size.  They are all between five ft and seven ft tall in their pots.

Would appreciate some comments on the appropriateness of my potting mixture and my fertilizing of these mangos, Har.

My four cultivars are"  Beverly, Fairchild, Ice Cream, Irwin.  ALl were sourced from TT in FtMyers.

TIA

Paul M.
==
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 26, 2022, 10:29:15 PM
Don't fix what isn't broken.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FIUPanther on March 06, 2022, 05:56:10 PM
Attached below are pictures of the leaves of my Cogshall mango tree.

It produced mangos last year for the first time, but it did not produce flowers this year and the leaves do not look healthy. Even the leaves that are green are twisted.

Does anyone know what may be causing this? A deficiency of some type or some other issue?

I'm located in Pembroke Pines, FL.

(https://i.postimg.cc/r0QGWH5d/Mango-Leaves-1.jpg) (https://postimg.cc/r0QGWH5d)

(https://i.postimg.cc/y3xmTTTL/Mango-Leaves-2.jpg) (https://postimg.cc/y3xmTTTL)

(https://i.postimg.cc/F1CgH298/Mango-Leaves-3.jpg) (https://postimg.cc/F1CgH298)

(https://i.postimg.cc/D8WQJB0Z/Mango-Leaves-4.jpg) (https://postimg.cc/D8WQJB0Z)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 07, 2022, 09:22:45 PM
Multiple micro-nutrient deficiencies--- especially Manganese deficiency.  Look for chelated micro-nutrients.  Also treat soil with granular Sulfur.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pineislander on March 08, 2022, 09:19:53 AM
Does anyone know what may be causing this? A deficiency of some type or some other issue?

Be sure no one has used "Weed and Feed" fertilizer product on your grass. It kills broadleaf plants including fruit trees.
If that is the case, get back and let us know it would be a good example of what not to do.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FIUPanther on March 09, 2022, 07:14:48 PM
Thank you Har,

I will also be getting a soil test from the local extension office to see what the soil looks like.

Weed killer was applied a few months ago and that could also be one of the issues, although it wasn't very close to the tree.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on March 16, 2022, 07:51:02 PM
Does anyone have any experience with R-K Nematodes and mangoes?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pineislander on March 16, 2022, 08:36:17 PM
Weed killer was applied a few months ago and that could also be one of the issues, although it wasn't very close to the tree.
So was this a "weed and feed" granular application to the grass around the tree?
What exact weed killer was applied, was it even close to the drip line of the tree?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on March 25, 2022, 12:50:39 PM
Had a lot of this last season, too. I can't figure out if this is Powdery Mildew or spiders. There are a fair number of spiders/webs in my trees, but it also seems like when the PM starts getting really bad, small web-like strands (almost cocoons) form around the hardest hit panicles. Does PM progress to a stage where it forms something like this?
(https://i.postimg.cc/vDJYjFyz/thumbnail.jpg) (https://postimg.cc/vDJYjFyz)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 26, 2022, 09:54:23 PM
Spiders or spider-mites or webworms.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DJSpurr on March 27, 2022, 03:48:14 PM
If you are foliage feeding micronutrients to mango trees, how frequently should it be done?  I have used Cal-Mag Plus. Any recommendations as to other micronutrient sources?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on March 28, 2022, 08:34:10 AM
Spiders or spider-mites or webworms.
Thanks Har, I did notice some caterpillar-like creatures yesterday on a panicle.
I do think these webs promote the PM (to some extent); they keep old buds from falling away and form little clusters/pockets of dead matter on the panicles. I'm going to take a magnifying glass out there today and see if I can figure out what bug is at work here.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on March 30, 2022, 05:40:58 AM
Har, I believe you warn people about adding compost when planting a mango tree even in very sandy, very poor high ph soil, can you say the same about peat please?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 30, 2022, 12:27:04 PM
In soil mixes, 10% peat is great (up to 20%)  (by volume).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Lovetoplant on March 31, 2022, 01:59:01 AM
In soil mixes, 10% peat is great (up to 20%)  (by volume).

Har, any thought about using coco coir?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on March 31, 2022, 07:27:51 AM
In soil mixes, 10% peat is great (up to 20%)  (by volume).

Can I use 10% peat in the planting hole during the last transplant in ground?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 06, 2022, 02:58:59 PM
No decomposable ammendment is likely to improve planting holes for mangos--- way likelier to sicken.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: shinzo on April 09, 2022, 12:55:50 PM
No decomposable ammendment is likely to improve planting holes for mangos--- way likelier to sicken.

What about the compost for mango trees, can we use it as a mulch? if not is it beneficial for 3 feet seedlings to till it around the tree?
Thank you in advance for the answer
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 09, 2022, 03:00:52 PM
I put pruned (and cut into straight sections) branches (less than 1 inch diameter of wood) and fallen leaves on the ground under fruit trees of any kind.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tonyma on April 12, 2022, 03:37:02 PM

(https://i.postimg.cc/SXRYMMW7/mango1.jpg) (https://postimg.cc/SXRYMMW7)

(https://i.postimg.cc/7J85dtjm/mango2.jpg) (https://postimg.cc/7J85dtjm)

Newbie here and just moved to Tampa not very long. I have this mango for 2 months and I notice black leaves as in pictures. Should it be a concern and what to use to eliminate this?
Thanks!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 12, 2022, 07:49:55 PM
Tonyma,
First photo may be of a slight excess of fertilizer, especially of urea.
Second may be a little anthracnose.

No big worries so far.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tonyma on April 15, 2022, 12:15:55 AM
Thanks a lot. I feel better now
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on April 15, 2022, 08:45:42 AM
(https://i.postimg.cc/SXryS8Mv/20220414-100131-1.jpg) (https://postimg.cc/SXryS8Mv)
I have little black spots and pitting and apparently a leaf-hopper on my Neelam seedling leaves. Admittedly it's not in the best spot, getting a bit of shade throughout the day from an oak, and probably has restricted airflow too. I couldn't help but plant it, though, because I just can't stop.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 15, 2022, 05:01:49 PM
Interesting.  I have never seen leafhoppers bothering mangos.  I don't know what the pits are from--- maybe the leafhopper?

In the lower part of the picture are two angular black spots;  maybe Mango Bacterial Black Spot.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on April 15, 2022, 08:58:55 PM
Thanks, Har! I erroneously thought Neelams weren't susceptible to MBBS (though this is a seedling whose leaves smell like Neelam). Perhaps the leaf hopper was just resting on the leaf? Thanks!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 16, 2022, 06:52:55 AM
I don't know of any variety that doesn't get MBBS sometimes.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dm on April 16, 2022, 03:31:40 PM
I had scale and what was believed to be powdery mildew causing browning leaves.
I wanted to avoid copper and sulfur, what with all their caveats, so I foolishly sprayed with Neem oil and potassium bicarbonate on all 7 trees for 8 weekly treatments on leaf tops and bottoms.
This killed the scale, but the browning and dropping of leaves has only continued, previously unaffected trees are now affected, and new growth is affected.

Orange Essence is not as badly affected as some others, but the leaf coloration looks suspect.
Not sure if I should just go with sulfur or copper or if it is too late for these trees.

Thanks


HONEY KISS - IN GROUND 8 MONTHS
(https://i.postimg.cc/DJ89kfDS/IMG-5271.jpg) (https://postimg.cc/DJ89kfDS)
(https://i.postimg.cc/tn68JS9y/IMG-5272.jpg) (https://postimg.cc/tn68JS9y)
(https://i.postimg.cc/3W0stRm6/IMG-5273.jpg) (https://postimg.cc/3W0stRm6)


PICKERING- IN GROUND 9 MONTHS
(https://i.postimg.cc/NKdCsqRm/IMG-5274.jpg) (https://postimg.cc/NKdCsqRm)
(https://i.postimg.cc/VSSgzSfP/IMG-5275.jpg) (https://postimg.cc/VSSgzSfP)
(https://i.postimg.cc/1VSr0Jpy/IMG-5276.jpg) (https://postimg.cc/1VSr0Jpy)


ORANGE ESSENCE- IN GROUND 7 MONTHS
(https://i.postimg.cc/D8yYtwXn/IMG-5277.jpg) (https://postimg.cc/D8yYtwXn)
(https://i.postimg.cc/LJJQ8QDW/IMG-5278.jpg) (https://postimg.cc/LJJQ8QDW)
(https://i.postimg.cc/hQ4pW2hp/IMG-5279.jpg) (https://postimg.cc/hQ4pW2hp)


ORANGE SHERBET- IN GROUND 7 MONTHS
(https://i.postimg.cc/9RCBZLPC/IMG-5280.jpg) (https://postimg.cc/9RCBZLPC)
(https://i.postimg.cc/w3WkRc1Y/IMG-5281.jpg) (https://postimg.cc/w3WkRc1Y)
(https://i.postimg.cc/cKMRxfpj/IMG-5282.jpg) (https://postimg.cc/cKMRxfpj)


PRAM KAI MEA- IN GROUND 8 MONTHS
(https://i.postimg.cc/KR6Bt9Fw/IMG-5289.jpg) (https://postimg.cc/KR6Bt9Fw)
(https://i.postimg.cc/v459hWZB/IMG-5290.jpg) (https://postimg.cc/v459hWZB)
(https://i.postimg.cc/fS3S9dPM/IMG-5291.jpg) (https://postimg.cc/fS3S9dPM)


COCONUT CREAM- IN GROUND 8 MONTHS
(https://i.postimg.cc/rD2RDKNL/IMG-5286.jpg) (https://postimg.cc/rD2RDKNL)
(https://i.postimg.cc/4nKYwz8g/IMG-5287.jpg) (https://postimg.cc/4nKYwz8g)
(https://i.postimg.cc/HJZL9xXn/IMG-5288.jpg) (https://postimg.cc/HJZL9xXn)


COTTON CANDY- IN GROUND 11 MONTHS
(https://i.postimg.cc/YGTqTsXw/IMG-5283.jpg) (https://postimg.cc/YGTqTsXw)
(https://i.postimg.cc/SjzKcmsQ/IMG-5284.jpg) (https://postimg.cc/SjzKcmsQ)
(https://i.postimg.cc/RWvVrfTq/IMG-5285.jpg) (https://postimg.cc/RWvVrfTq)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Ski70 on April 26, 2022, 10:43:31 AM
I just purchased an ice cream mango that has some new growth and flowering. I watched Har's video and he mentioned that i would lose new growth when transplanting into the ground. Is this to say i need to wait until winter or fall to plant him? Its currently in a 30 gallon pot. There also seems to be some black spotting and white spots.  See images
(https://i.postimg.cc/06T0FZcC/20220425-185150.jpg) (https://postimg.cc/06T0FZcC)

(https://i.postimg.cc/D4Fdy0VJ/20220425-185251.jpg) (https://postimg.cc/D4Fdy0VJ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 26, 2022, 09:05:58 PM
Go ahead and plant.  On a tree with that many branch tips, there will almost always be some new growth somewhere.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 26, 2022, 09:07:18 PM
DM,
What kind of soil were those mangos planted in?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: McRysh on April 27, 2022, 05:18:55 AM
Hey guys, I might have a problem with my 8 months old mango tree, since november the tips have been turning brown, first only on few leaves and then it suddenly stopped spreading. But now in spring more and more tips are turning brown including the new leaves, which are now looking kinda weird. I tried to cut off the brown tips to stop spreading, but it didn't help, also googling didn't give me any solution. Here are some photos, I'd appreciate any help. Thanks
(https://i.postimg.cc/hzwDV0pp/Whats-App-Image-2022-04-27-at-11-02-18.jpg) (https://postimg.cc/hzwDV0pp)

(https://i.postimg.cc/JHk1xBFm/Whats-App-Image-2022-04-27-at-11-02-18-1.jpg) (https://postimg.cc/JHk1xBFm)

(https://i.postimg.cc/SXgNx480/Whats-App-Image-2022-04-27-at-11-02-18-2.jpg) (https://postimg.cc/SXgNx480)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pineislander on April 27, 2022, 08:14:15 AM
Hey a friend sent me this picture saying that all of his mango trees had the same appearance. At first I assumed he was watering with some salty or highly chlorinated water. After some mopre questions it turned out he had used borax on the trees after a soil test showed low boron. Turns out the symptoms seen match boron toxicity perfectly. So, beware using borax on mango and be aware of the toxicity symptoms shown.


(https://i.postimg.cc/rK3zPQzW/boron-toxicity.jpg) (https://postimg.cc/rK3zPQzW)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on April 27, 2022, 11:47:33 AM
DM,
What kind of soil were those mangos planted in?

That's exactly my thought! My very high pH calcareous soil makes mangoes look like this unfortunately.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 27, 2022, 08:48:51 PM
PineIslander,
Yes.  We have also done that using palm fertilizer on potted mangos, with 0.22% B.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 27, 2022, 08:53:03 PM
McRysh,
Looks good enough.

Maybe it has some urea in the soil mix or in the fertilizer--- and no Nickel, so can't make urease enzyme.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: samerd on April 28, 2022, 10:03:56 AM
I recently planted a few Mangoes and for some reason my Orange Sherbet is the only one that started to get dried out crisp and folded leaves. I watered it plenty too. So, I decided to replant a few feet away because there were a lot of fertilizer granules in the hole (from the pot). But any idea what this could be? There’s a before and after of the tree, really hoping it makes it

(https://i.postimg.cc/T5jd2J2t/B1-E52385-6305-46-CF-9458-C2-A396831158.jpg) (https://postimg.cc/T5jd2J2t)

(https://i.postimg.cc/Hjbstd0b/CB0-EAC99-07-DE-404-B-8716-0-E1998-B5-DD6-D.jpg) (https://postimg.cc/Hjbstd0b)

(https://i.postimg.cc/jLKqgmvm/DB72457-B-9-CEB-4551-92-B0-8-DAEBE659548.jpg) (https://postimg.cc/jLKqgmvm)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 28, 2022, 08:28:27 PM
Check with a magnifier lens, for mites. 

Or it might have phytophthora root rot.  The stems already look shriveled.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dm on April 28, 2022, 09:46:40 PM
DM,
What kind of soil were those mangos planted in?

I have a thin top layer of regular black-ish soil, but below that I think it is marl, but yard is built up a bit to lift house, so there is some fill (asphalt, etc) in other areas.  But I only encountered black soil, marl & rock when planting.  Big avocado grew in the yard for decades, and neighbor also has a big mango tree, so I thought it would be ok.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 29, 2022, 01:38:07 PM
Did you add potting soil or compost to the planting hole?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on April 29, 2022, 01:42:43 PM
Yikes, after reading Har's post above, I'm afraid a couple of our newer trees have phytophthora root rot. Our Pineapple Pleasure's leaves started wilting, turning yellow, drying out, and then falling off. Literally every leaf fell off. It also seemed like the stem/trunk was shriveling, so I cut it back to what seemed like a good point. Now the top of where I made the cut is turning brown. I thought these issues stemmed from the freezes and the recent heavy winds and drought, but now think its phytophthora root rot. What do you think? And if it's root rot, what can be done? Here's the PP prior to the leaves falling off:
(https://i.postimg.cc/McJcHdSv/20220330-195927-1-2.jpg) (https://postimg.cc/McJcHdSv)
Thanks!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 29, 2022, 02:11:53 PM
Stresses, such as cold soil and droughts, certainly make roots less able to fight off infections.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on April 29, 2022, 02:19:02 PM
Makes sense, Har. What would you advise for the patient? Thanks!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 29, 2022, 08:48:23 PM
Perhaps hydrogen peroxide, diluted to 0.25%.  One and a half to two gallons of mix poured onto one square foot of the soil.  Weekly, until corrected.

Example:  11 pints of water (same as 1 gallon + 1 quart + 1/2 quart) plus 1 pint of drugstore 3% hydrogen peroxide.

If you buy a concentrate somewhere, remember that the concentrate can cause immediate blindness if it splashes in your eyes,
severe skin burns, or holes in your cotton clothes.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jose Spain on April 30, 2022, 04:18:43 PM
Planted last year, a graft from this young tree is putting out a normal looking panicle, but these rootstock shoots clearly have some problem. It seems like a deficiency but I don't know what it is. Any idea what could it be? Thanks.

Jose

(https://i.postimg.cc/gnQ3yd8m/Whats-App-Image-2022-04-30-at-10-09-47-PM.jpg) (https://postimg.cc/gnQ3yd8m)

(https://i.postimg.cc/4KTtM5W0/Whats-App-Image-2022-04-30-at-10-10-26-PM.jpg) (https://postimg.cc/4KTtM5W0)

(https://i.postimg.cc/TLdb2PMq/Whats-App-Image-2022-04-30-at-10-11-16-PM.jpg) (https://postimg.cc/TLdb2PMq)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on April 30, 2022, 06:33:37 PM
Thanks, Har, for the recommendation and the mix (I don't think my non-mathematical mind would have ever figured out that recipe), as well as the safety warning. I will be wearing eye protection. Always grateful for your advice.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 01, 2022, 02:27:22 PM
Jose',
Probably cold-soil-induced deficiencies, of Calcium, Sulfur, Zinc, Iron, etc.  Red spots may be from thrips or from micro-mites.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dm on May 01, 2022, 06:50:19 PM
Did you add potting soil or compost to the planting hole?

No, I did not add anything in the hole when planting. I dug a hole, put the plant inside and filled the spaces with the native soil I dug out. Then I spread 1 bag of Home Depot "compost with manure" (not Black Cow) on top and 3 bags of cypress mulch (both away from the trunk).
Thank you
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jose Spain on May 02, 2022, 11:23:25 AM
Jose',
Probably cold-soil-induced deficiencies, of Calcium, Sulfur, Zinc, Iron, etc.  Red spots may be from thrips or from micro-mites.

Thank you very much, Har. Indeed, since the beginning of March we have been experiencing unusually cool and quite rainy weather. Thanks for your answer.

Jose
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Nuraxi on May 04, 2022, 10:50:16 AM
This Kensington Pride, after having spent its third winter planted on the ground, is now like this, usually in June it is already beautiful and recovering well, it has always suffered a bit of black spot and anthracnose towards the end of winter , especially on the finer branches, in the photo a sprig affected, I have already cut and disinfected with copper oxychloride, every now and then it suffers a little from ferric chlorosis, maybe it also has some other deficiency, I grow it in organic, every now and then I give micronutrients and macros through the leaves, it is the only one mango, that manifests these problems, I also thought of grafting on something else in the future, the rootstock is a Gomera3, what do you think? ..

(https://i.postimg.cc/8JL6ZcWP/819-A8-B25-8-EE5-4035-880-F-53-A8-AD30-C99-D.jpg) (https://postimg.cc/8JL6ZcWP)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 08, 2022, 11:41:42 AM
Nuraxi,

Looks complicated.

I recommend that you get a soil analysis and a leaf tissue analysis, testing for all the known plant nutrients, in each sample, including Sodium (Na) and Chloride.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Victoria Ave on May 08, 2022, 11:43:59 PM
Hi all,

I have a weird die off at the very top of my fruiting Valencia pride mango tree. I noticed shriveled branches and crispy leaves on one section after a couple very bright warm days. I snipped that off but noticed what looked like the same forming in the other top branches. There were fruitlets but I let them be. Now all the growth above it is doing the same. Any ideas what has caused this. This is all above where I haven’t gotten new growth in years. Should I cut it all off above my healthy growth then throw my 30% shade cloth over it before our summer really gets going?

Thanks


(https://i.postimg.cc/R3jMpn0r/17-EFA8-E4-A309-4012-B25-C-F77-DC83-D42-F2.jpg) (https://postimg.cc/R3jMpn0r)

(https://i.postimg.cc/2qqkxxrF/1-AC723-BE-F7-D9-40-B9-B550-C5-FE3-A435702.jpg) (https://postimg.cc/2qqkxxrF)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Nuraxi on May 09, 2022, 11:04:09 AM
Nuraxi,

Looks complicated.

I recommend that you get a soil analysis and a leaf tissue analysis, testing for all the known plant nutrients, in each sample, including Sodium (Na) and Chloride.

Thank you very much Guanabanus,  I will post a full photo of the plant later…
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Calusa on May 09, 2022, 06:05:40 PM
Hello - My young mango trees don't appear to be putting out typical robust new growth since I removed the blooms a couple of months ago. The first photo shows the Maha Chanock, with one new growth appearing only a couple of weeks after I removed the blooms, but is stunted. It's been that size for over a month. The 2nd photo shows the growth buds that began appearing a month ago. They are very slow to pop out.

(https://live.staticflickr.com/65535/52054543338_325df6b60d_z.jpg)
(https://live.staticflickr.com/65535/52054543333_c9ecc4a7ea_z.jpg)

The next photos show my Glen Mango with some peculiar growth -  one photo shows one new growth growing downward, the others just very tiny and weak looking. Maybe I'm a overly concerned but need some opinions. I have fertilized these trees with a good mango/citrus fertilizer with micronutrients, and keep them watered in between the infrequent rains in West Central Florida this Spring.

(https://live.staticflickr.com/65535/52054744179_98f862ebba_z.jpg)
(https://live.staticflickr.com/65535/52053463172_485ee8a66b_z.jpg)
(https://live.staticflickr.com/65535/52054508886_a3c65cc0db_z.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 09, 2022, 09:19:38 PM
Victoria Ave,

A Valencia Pride that doesn't produce vegetative flushes for several years?  Very unusual!

What type of soil is it growing in?  Types of fertilizer?  Source of Calcium?  Frequency and amount of water?  Weather?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Victoria Ave on May 09, 2022, 11:59:36 PM
Hi Har,

Last year was the first year I got good flushes (about 4 flushes)I’ve noticed them growing from lower on the tree. The very top got badly roasted a couple years ago when we had a 116° day and has been kind of hanging in there but every year I would have to remove branches.

Soil is clay. Based on research I did years ago I built a 4x4 planter out of redwood fence panels and mixed some native clay but also raised bed mix and sunshine #4 to make a fast draining soil. It is irrigated by in-line drip tubing coiled around the tree. This morning I proved around and found that not very close to the dropper the soul was significantly drier even though the irrigation ran last night (42 gallons over 6 hours, set to run every 5 days right now.)

I believe a culprit lately has been our winds. It hasn’t been that hot, but the wooden slats with gaps and the loose soil could dry out easily with the winds we get here. Also my trees in clay do quite well with the drip emitters because the moisture spreads more evenly over distance. In the raised planter it just goes down quicker. Today I thoroughly wetted the entire root zone with a hose. I read a study on Pakistani mango growing on drip and they reported that soaking the entire root zone once a month brought tree production closer to flood irrigation. So I will monitor.

Last year I gave my trees citrusgain once a month and they responded well. This year I’ve used to coated oscomote on my non fruiting trees and this year on the Vp just been using a drench of fish and kelp emulsion and humid acid kelp concentrate that works out to about 2-1-9. Trees get applications of pelletized gypsum and iron/sulfur in spring and fall. I should spray with Southern Ag citrus spray as I haven’t since right after harvest

Summers here average very hot (90-100) and UVis intense and I’ve found this tree to thrive under 30% shade cloth. But maybe I’m not irrigating enough? Last year was good growth with increased irrigation.

Sorry for the novel and thanks for you time

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on May 10, 2022, 05:14:30 PM
Any obvious deficiencies from this recent flush please? Ignore the salt damage in last year's growth, keep in mind that this seedling was recently transplanted in the ground with some damage to the taproot. I'm thinking of spraying micros as my soil won't provide much (soil test attached) but should I rather wait for the next flush? Currently I'm just adding Humic/Fulvic acids and seaweed extract + very light amino acid & NPK.

(https://i.postimg.cc/9DCDjXt0/IMG-2468.jpg) (https://postimg.cc/9DCDjXt0)

Soil test:
(https://i.postimg.cc/GHV1kX9C/soil-test.png) (https://postimg.cc/GHV1kX9C)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 11, 2022, 09:37:28 PM
Nicely detailed soil report.  Manganese is low in relation to amount of Iron--- should be similar amounts.

Plant looks good.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Victoria Ave on May 13, 2022, 10:45:19 AM
Hi Har,

Last year was the first year I got good flushes (about 4 flushes)I’ve noticed them growing from lower on the tree. The very top got badly roasted a couple years ago when we had a 116° day and has been kind of hanging in there but every year I would have to remove branches.

Soil is clay. Based on research I did years ago I built a 4x4 planter out of redwood fence panels and mixed some native clay but also raised bed mix and sunshine #4 to make a fast draining soil. It is irrigated by in-line drip tubing coiled around the tree. This morning I proved around and found that not very close to the dropper the soul was significantly drier even though the irrigation ran last night (42 gallons over 6 hours, set to run every 5 days right now.)

I believe a culprit lately has been our winds. It hasn’t been that hot, but the wooden slats with gaps and the loose soil could dry out easily with the winds we get here. Also my trees in clay do quite well with the drip emitters because the moisture spreads more evenly over distance. In the raised planter it just goes down quicker. Today I thoroughly wetted the entire root zone with a hose. I read a study on Pakistani mango growing on drip and they reported that soaking the entire root zone once a month brought tree production closer to flood irrigation. So I will monitor.

Last year I gave my trees citrusgain once a month and they responded well. This year I’ve used to coated oscomote on my non fruiting trees and this year on the Vp just been using a drench of fish and kelp emulsion and humid acid kelp concentrate that works out to about 2-1-9. Trees get applications of pelletized gypsum and iron/sulfur in spring and fall. I should spray with Southern Ag citrus spray as I haven’t since right after harvest

Summers here average very hot (90-100) and UVis intense and I’ve found this tree to thrive under 30% shade cloth. But maybe I’m not irrigating enough? Last year was good growth with increased irrigation.

Sorry for the novel and thanks for you time

Wanted to bump this, thanks
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 14, 2022, 02:00:19 PM
Victoria Ave,

Better-spreading irrigation at the surface, and the shadecloth, would indeed both help.

You didn't mean to say 42-gallons on one plant, did you?

Shading / windbraking the planter box sides, with burlap or with potted plants, would also provide some relief.

I didn't see mention of a substantial source of Calcium.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Malhar on May 14, 2022, 03:09:38 PM
My Manilla mango tree leaves look like these.  Is that powdery mildew or some thing else?

(https://i.postimg.cc/PCyzJXNm/IMG-3358.jpg) (https://postimg.cc/PCyzJXNm)

In addition, it's apical growth is slow and weak.  Can it be due to a nutritional deficiency or some type of insect damage?
Thanks

(https://i.postimg.cc/bGv02724/IMG-3359.jpg) (https://postimg.cc/bGv02724)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Victoria Ave on May 14, 2022, 10:28:12 PM

You didn't mean to say 42-gallons on one plant, did you?


I did, this is for my producing tree. Am I drastically over watering? I just used my moisture probe and in the raised mango tree the soil moisture was around 6 out of ten but about 10 inches down it suddenly jumps up to 9 (where I hit clay). Irrigation ran almost 2 days ago. All the other trees in clay under mulch are at a happy 8 under the mulch.

Maybe after this season I will try transplanting the Valencia pride. I played it when I really didn’t have a plan
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 15, 2022, 12:45:04 PM
Malhar,
deficiencies of Zinc, Manganese, Copper, and Potassium.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Calusa on May 15, 2022, 06:58:08 PM
Let me try a 3rd time to get a response.

Hello - My young mango trees don't appear to be putting out typical robust new growth since I removed the blooms a couple of months ago. The first photo shows the Maha Chanock, with one new growth appearing only a couple of weeks after I removed the blooms, but is stunted. It's been that size for over a month. The 2nd photo shows the growth buds that began appearing a month ago. They are very slow to pop out.

(https://live.staticflickr.com/65535/52054543338_325df6b60d_z.jpg)
(https://live.staticflickr.com/65535/52054543333_c9ecc4a7ea_z.jpg)

The next photos show my Glen Mango with some peculiar growth -  one photo shows one new growth growing downward, the others just very tiny and weak looking. Maybe I'm a overly concerned but need some opinions. I have fertilized these trees with a good mango/citrus fertilizer with micronutrients, and keep them watered in between the infrequent rains in West Central Florida this Spring.

(https://live.staticflickr.com/65535/52054744179_98f862ebba_z.jpg)
(https://live.staticflickr.com/65535/52053463172_485ee8a66b_z.jpg)
(https://live.staticflickr.com/65535/52054508886_a3c65cc0db_z.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: 599gh888 on May 17, 2022, 12:26:21 AM
Check with a magnifier lens, for mites. 

Or it might have phytophthora root rot.  The stems already look shriveled.
Any treatment for this disease?  Thank you Har
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 17, 2022, 05:12:16 PM
Calusa,

Deficiencies of Zinc and Copper.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tonyma on May 18, 2022, 10:43:14 AM
I notice black dots on 2 young leaves, then next day, it spreads too quickly to many more. Does anyone know what it is and how to treat it? Appreciate it.

(https://i.postimg.cc/0KbYhjzN/83-D05-D05-7924-417-C-8-D9-A-F86238430-D3-E.jpg) (https://postimg.cc/0KbYhjzN)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Calusa on May 18, 2022, 05:44:08 PM
Calusa,

Deficiencies of Zinc and Copper.

THANK YOU!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 18, 2022, 09:08:45 PM
Tonyma,

Probably Mango Bacterial Black Spot.  Or Anthracnose.  For either, spray with any Copper product.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tonyma on May 18, 2022, 10:48:10 PM
Tonyma,

Probably Mango Bacterial Black Spot.  Or Anthracnose.  For either, spray with any Copper product.

Thanks, will do it very soon.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on May 24, 2022, 01:50:46 PM
My Pickering is showing me something isn't right.  What's it trying to tell me?  And my Honey Kiss, planted from a 7 gallon pot last summer is also showing a similar leaf pattern, but not quite as obvious.
(https://i.postimg.cc/xJ5bz54y/20220524-122350.jpg) (https://postimg.cc/xJ5bz54y)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on May 24, 2022, 09:47:12 PM
Check with a magnifier lens, for mites. 

Or it might have phytophthora root rot.  The stems already look shriveled.
Any treatment for this disease?  Thank you Har
See Har's response #2212 on page 89 of this thread.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: 599gh888 on May 25, 2022, 11:01:08 PM

(https://i.postimg.cc/62hH9Dwt/35-CCAB8-E-E164-43-F9-92-F8-2-F1572-AC34-B2.jpg) (https://postimg.cc/62hH9Dwt)

(https://i.postimg.cc/k6PZMQbF/3762007-F-4-D5-A-44-A0-A80-F-819-B888-B286-E.jpg) (https://postimg.cc/k6PZMQbF)

(https://i.postimg.cc/7G4srqFK/4-A37-B3-D6-6-BB0-4275-B8-EE-52-A1856-C0399.jpg) (https://postimg.cc/7G4srqFK)

(https://i.postimg.cc/Y4YnPvs4/D1-A1-D1-DE-71-EF-441-E-8-B6-A-E4-F1-B1605-ECD.jpg) (https://postimg.cc/Y4YnPvs4)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: 599gh888 on May 25, 2022, 11:04:05 PM
The above images are from my LZ. Anthracnose is really bad. Can I get your input on what I should do?  This tree have been planted there for two years. No fruit yet. Should I remove it and replace it with something else. The trunk lower in the plant is also peeling
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: 599gh888 on May 25, 2022, 11:16:44 PM
I just finished spraying with copper earlier and I sprayed sulfur last week. Any chance to save any of the branches infected with anthracnose?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 27, 2022, 06:02:04 AM
Sprays usually don't fix damage already done--- no resurrection of dead tissue.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on June 01, 2022, 10:28:32 AM
Small ants are always interested in very tender new shoots, I keep blowing on them to disturb them but I'm not even sure if they're doing any harm. Any similar experience?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 01, 2022, 07:46:21 PM
Ants transport the young of pests.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jagmanjoe on June 05, 2022, 08:24:13 AM
Having issues that seem to be spreading among several small grafted mango trees as well as a couple of seedlings now.  I thought it was Anthracnose and sprayed a little over a week ago with Cueva Copper and then a few days later with a mild soap solution but it still seems to be spreading.
Any thoughts on ways to get this under control would be appreciated as it is destroying new growth.

(https://i.postimg.cc/wyWjLxJy/thripsmango1.jpg) (https://postimg.cc/wyWjLxJy)

(https://i.postimg.cc/fkLLZXnx/thripsmango2.jpg) (https://postimg.cc/fkLLZXnx)

(https://i.postimg.cc/F7kHk4Kz/thripsmango3.jpg) (https://postimg.cc/F7kHk4Kz)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on June 05, 2022, 10:31:52 AM
I have one branch on a tree that's leaking sap from three spots, all at/around the same point on the branch. It's right below where I grafted in Cecilove early last year, but there are many grafts on the tree and none are bleeding sap like this. Worried it might be MBBS. Is there any treatment I could do to encourage healing?

(https://i.postimg.cc/Kk8bTQwc/IMG-5499.jpg) (https://postimg.cc/Kk8bTQwc) (https://i.postimg.cc/R3R9q2Pb/IMG-5500.jpg) (https://postimg.cc/R3R9q2Pb) (https://i.postimg.cc/QBsh8jqT/IMG-5501.jpg) (https://postimg.cc/QBsh8jqT)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 05, 2022, 12:55:14 PM
Jagmanjoe,
Wind damage followed by fungus infections: Anthracnose, and probably also Cylindrocladium.

3rd picture:  mineral deficiencies--- Zinc, and probably Copper and Sulfur.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 05, 2022, 01:06:46 PM
JakeFruit,
Spot spray with hydrogen peroxide till ooze dissolves, wip off with papertowel, spray again.  While still freshly open, spray whole tree and wounds with any Copper Sulfate Pentahydrate product.  If you only have Copper Octanoate or Ammoniated Copper, those will also work.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on June 05, 2022, 04:08:08 PM
Will do, thanks Har!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jagmanjoe on June 05, 2022, 06:00:34 PM
Jagmanjoe,
Wind damage followed by fungus infections: Anthracnose, and probably also Cylindrocladium.

3rd picture:  mineral deficiencies--- Zinc, and probably Copper and Sulfur.

Thank you very much for taking the time to provide your valuable input, Har
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: INaba on June 12, 2022, 01:36:30 PM
I need advice please. How to save this Glenn tree?
I noticed this hollow under bark. This is 3-4 year old tree.
Thanks, Irene
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: INaba on June 12, 2022, 01:39:20 PM
This is the picture of it.

(https://i.postimg.cc/8jVzynDb/20220612-131711.jpg) (https://postimg.cc/8jVzynDb)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 12, 2022, 01:48:32 PM
Spray it several times with Copper products.  Then the tree's bark will probably heal over that spot.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: INaba on June 12, 2022, 03:38:57 PM
Do I have to clean some necrotic tissues under the bark?
I sprayed copper product a week ago. Now it doesn't look better even worth after rain.
Does this product will be able to help? After spraying copper?
Thanks a lot
(https://i.postimg.cc/vcpzPNvX/20220612-153647.jpg) (https://postimg.cc/vcpzPNvX)

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 12, 2022, 10:20:08 PM
Healing will take over one year.

I don't know that product.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Gentman on June 13, 2022, 09:10:13 PM
Don't know what are the dark patches on both the old and new leaves of this new mango tree. Someone can help me on this.
(https://i.postimg.cc/dkgFVDGB/IMG20220613112712.jpg) (https://postimg.cc/dkgFVDGB)

(https://i.postimg.cc/p9xpPcPT/IMG20220613112727.jpg) (https://postimg.cc/p9xpPcPT)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 14, 2022, 08:17:32 PM
Dead tissue, from previous infections or spray burns.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Victoria Ave on June 19, 2022, 05:38:33 PM
Many of my mango seedlings have twisted (in some cases looped) trunks right around the soil line (see photo). When planting should these planted below soil line, currently putting them in the ground and just planting them level with where the soil line was in the pots I received them in


(https://i.postimg.cc/BPb5krqc/24-FF60-D0-7260-49-AA-B3-C7-73-CA50826-C9-F.jpg) (https://postimg.cc/BPb5krqc)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tonyma on June 27, 2022, 09:05:36 AM
Seem my mango has new potential issue???
Not quite sure what's wrong with its leaves as it is my first time growing mango tree. Can some experts out there give me suggestions or recommendations for a cure?
Thanks
(https://i.postimg.cc/McHx8rn6/Mango3.jpg) (https://postimg.cc/McHx8rn6)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 27, 2022, 12:34:40 PM
Tonyma,
Perhaps a burn from spray in very hot sun, or from pee, from a pet or tree frog....
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on June 28, 2022, 03:32:41 PM
Honey Kiss, planted last summer from 7 gal pot. Seems to be doing well.  But I noticed this the other day on a few leaves.  Any idea what might be happening?



(https://i.postimg.cc/3dVhpnyJ/20220627-104823.jpg) (https://postimg.cc/3dVhpnyJ)

(https://i.postimg.cc/Mctr0psb/20220627-104805.jpg) (https://postimg.cc/Mctr0psb)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 28, 2022, 10:08:07 PM
Looks as though a large insect or snail scraped the surface of the leaf.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on June 29, 2022, 10:37:57 AM
Interesting.  I'll have to keep my eye on this.  Thanks, Guanabanus.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on July 01, 2022, 09:58:33 PM
Upon further review, whatever this is has spread to several leaves.  In the photos you will notice white spots on the tree.  The house painter rinsed off some brushes nearby and got some on the tree.  I don't think this has anything to do with the browning on the leaves.
(https://i.postimg.cc/9z2RyMQz/20220701-191108.jpg) (https://postimg.cc/9z2RyMQz)

(https://i.postimg.cc/jnqSmDDX/20220701-191057.jpg) (https://postimg.cc/jnqSmDDX)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: weiss613 on July 02, 2022, 10:35:37 AM
What is causing these depressions on so many of my fruit this year? The depressions don’t penetrate the deep layer of skin. The black spots are not eggs.
(https://i.postimg.cc/64skm5Fj/500-FADEF-B3-E5-41-B3-B025-A82-D854-F73-B5.jpg) (https://postimg.cc/64skm5Fj)

(https://i.postimg.cc/Q9WLmWYK/E62-B3097-5239-4-C64-A3-A1-3-BAF33-FE34-D0.jpg) (https://postimg.cc/Q9WLmWYK)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: weiss613 on July 02, 2022, 10:53:58 AM
And besides affecting mangoes it’s happening to my avocados too.
(https://i.postimg.cc/mPgN3yzk/00-EF2-C1-B-A57-C-465-A-86-AB-CC7-C9-A6-D976-D.jpg) (https://postimg.cc/mPgN3yzk)

(https://i.postimg.cc/5j83f0W4/38-C13-CFC-5-DE7-4-B14-8565-53-E8-DE27-FB7-D.jpg) (https://postimg.cc/5j83f0W4)

(https://i.postimg.cc/CzY45gwj/466-A45-CA-F5-FA-4-E38-A7-CF-35-C4-C9-AED2-D4.jpg) (https://postimg.cc/CzY45gwj)

(https://i.postimg.cc/dLBjTx0g/871-BE81-C-F1-D9-4-FF0-B323-7-EBA6-CD177-CC.jpg) (https://postimg.cc/dLBjTx0g)

(https://i.postimg.cc/wymkyxtk/8-E30437-A-6-F8-A-4162-87-BD-735-DB0-CC9-F5-E.jpg) (https://postimg.cc/wymkyxtk)

(https://i.postimg.cc/q6cXwmxh/929299-AA-24-F4-499-D-ABF9-F3-ECC1-D32-B1-B.jpg) (https://postimg.cc/q6cXwmxh)

(https://i.postimg.cc/BtFhtpHG/A441-F148-B0-E4-46-FC-9687-9-F9339-B6396-F.jpg) (https://postimg.cc/BtFhtpHG)

(https://i.postimg.cc/QBPbdKMt/E4865132-9-D6-E-41-F8-AE8-C-D8-C1-CC13-BF71.jpg) (https://postimg.cc/QBPbdKMt)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: johnb51 on July 02, 2022, 07:47:58 PM
What percentage of your fruit has this problem?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 03, 2022, 10:02:51 PM
Probably a mineral imbalance, such as a Boron deficiency.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: John B on July 04, 2022, 01:02:56 PM
My atulfo rootstock trunk has large crevices/splitting. It was originally 3 plants that popped up by I cut one of the trunks off. Haven't decided if I will cut the other trunk off yet. Trees are about 8 ft tall with Sweet tart grafts that appear healthy. Is this normal or a problem?

(https://i.postimg.cc/xN0b26Lh/PXL-20220704-164819443.jpg) (https://postimg.cc/xN0b26Lh)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 05, 2022, 06:40:02 PM
Normal bark aging, probably.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: John B on July 05, 2022, 07:17:34 PM
Thank you, Har.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Calusa on July 27, 2022, 01:31:40 PM
Tell me what I should do with this mango tree

Hi, this Glen mango has been in the ground for one year and has really grown well at the top. However as you can see the trunk is not keeping up and it pretty limber considering the mass of foliage, and requires a tripod of stakes to protect it from wind. I bought the tree in this general shape but much smaller and thinner at that time. The trunk diameter has doubled (to 1.5") however the top has more than quadrupled.

The top is 5 feet wide, the trunk is 4 1/2 feet tall from ground to foliage and is 1-1/2 inches thick. I am afraid that at some point in time the trunk will not be able to sustain the top foliage, so I am asking if there is a specific formula of fertilizer that will focus on growing and strengthening the trunk; or do I need to severely cut back the top to the primary nodes on each  branch; or is this tree a lost cause?

Appreciate the help!

(https://live.staticflickr.com/65535/52243175868_9842e8bb84_z.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 28, 2022, 05:00:39 PM
Have you done a soil test?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on July 28, 2022, 05:19:48 PM
Tell me what I should do with this mango tree

Hi, this Glen mango has been in the ground for one year and has really grown well at the top. However as you can see the trunk is not keeping up and it pretty limber considering the mass of foliage, and requires a tripod of stakes to protect it from wind. I bought the tree in this general shape but much smaller and thinner at that time. The trunk diameter has doubled (to 1.5") however the top has more than quadrupled.

The top is 5 feet wide, the trunk is 4 1/2 feet tall from ground to foliage and is 1-1/2 inches thick. I am afraid that at some point in time the trunk will not be able to sustain the top foliage, so I am asking if there is a specific formula of fertilizer that will focus on growing and strengthening the trunk; or do I need to severely cut back the top to the primary nodes on each  branch; or is this tree a lost cause?

Appreciate the help!

(https://live.staticflickr.com/65535/52243175868_9842e8bb84_z.jpg)
I'm also curious about this. This happens in a lot of my mangoes up here. I was thinking it was because of no wind in the greenhouse, but I've put fans galore and still the branches are quite weak although stronger. I'd be curious if there is a nutrient or nutrients responsible for branch strength? If so, I'd love to see the fix!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 28, 2022, 08:09:35 PM
Copper, Calcium, and Silicon are important to strengthen wood.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Calusa on July 28, 2022, 09:52:15 PM
Thank you!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JCorte on July 29, 2022, 10:42:43 AM
Calusa,

In addition to the proper nutrition, I wonder if the way you are staking and supporting the tree contributes to the trunk remaining week.  I have found that loosely staking my plants so they are able to move is best.  When a plant is not able to support its own weight I will space three stakes away from the trunk and tie with a strong nursery tape that will not bind or scratch the branches, allow movement but at the same time keeps the plant upright.  I would also thin out some of the branches to relieve some of the weight while the trunk strengthens.  Tight staking over a long period of time may contribute to weak trunk and branches.  When I start seedlings in an indoor area, I will brush my hands over the plants regulary, use a fan, or blow on the seedlings when young to strengthen them.

Janet
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Calusa on July 29, 2022, 11:28:31 AM
Thanks Janet - I actually intend to follow that loose staking method which was also recommended by pineislander in another thread I started on this topic. Also I have cut the top growth way back and removed a few branches, and I am going to girdle the trunk about 3' off the ground to promote some growth lower on the trunk.

Again, thanks!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 29, 2022, 03:59:06 PM
Girdling starves the roots.

Chipping just above buds that you want to grow, will probably work.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on August 01, 2022, 09:26:46 AM
My Pickering gave me a good crop this season.  Plenty of fruit, and after a bland handful of mangos to start the season, they were positively stinkin' delicious.  Now, I'm looking at the tree and I'm seeing a lot of leaves that indicate something is wrong.  Any ideas?  Thank you.
(https://i.postimg.cc/CnNmPSvs/20220801-091402.jpg) (https://postimg.cc/CnNmPSvs)

(https://i.postimg.cc/p5xsJpBd/20220801-091408.jpg) (https://postimg.cc/p5xsJpBd)

(https://i.postimg.cc/1fsdpYWK/20220801-091433.jpg) (https://postimg.cc/1fsdpYWK)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: CarloGolfer on August 01, 2022, 08:01:17 PM
Here's a question: would it be a problem to plant a mango tree 20-30' downhill from a septic tank/field? I guess this is a question to get ahead of any problems. I can't find any consistent advice out there.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 01, 2022, 10:21:12 PM
I don't know anything about how far seepage will go.  I imagine that that will vary per soil, etc.

High nitrogen will degrade the quality of most mangos, perhaps India-type especially.

Nam Doc Mai is tolerant of high-Nitrogen.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on August 02, 2022, 07:14:33 PM
My Pickering gave me a good crop this season.  Plenty of fruit, and after a bland handful of mangos to start the season, they were positively stinkin' delicious.  Now, I'm looking at the tree and I'm seeing a lot of leaves that indicate something is wrong.  Any ideas?  Thank you.
(https://i.postimg.cc/CnNmPSvs/20220801-091402.jpg) (https://postimg.cc/CnNmPSvs)

(https://i.postimg.cc/p5xsJpBd/20220801-091408.jpg) (https://postimg.cc/p5xsJpBd)

(https://i.postimg.cc/1fsdpYWK/20220801-091433.jpg) (https://postimg.cc/1fsdpYWK)

Did you spray anything recently? Did you fertilize?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: CarloGolfer on August 02, 2022, 07:47:56 PM
I don't know anything about how far seepage will go.  I imagine that that will vary per soil, etc.

High nitrogen will degrade the quality of most mangos, perhaps India-type especially.

Nam Doc Mai is tolerant of high-Nitrogen.

Here is a picture of the area in question. I put in a pickering a couple weeks ago which you can see on the left. It's about 30' from the edge of the septic field. The septic field is also about 4-5' higher in elevation.

(https://i.postimg.cc/7CGj5znD/20220802-194147.jpg) (https://postimg.cc/7CGj5znD)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on August 02, 2022, 08:38:57 PM
Copper, Calcium, and Silicon are important to strengthen wood.
Thanks for the information Guanabanas.
Would 8-3-9 fertilizer cover those nutrients or do I need to buy seperate  items?
Would me under fertilizing the trees contribute to weakened branches due to less air flow and lack of those nutrients? Is there a way to see if my trees are actually lacking those nutrients?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on August 03, 2022, 09:07:54 AM
Did you spray anything recently? Did you fertilize?
Haven't sprayed anything.  About two weeks ago I gave a feeding of 8-3-9 fertilizer and some pelletized gypsum.  I have used both previously without any problems.  I also fed both to my Honey Kiss tree and it isn't showing any similar symptoms.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on August 09, 2022, 01:55:20 PM
Fertilizer question.
Mr Har, wondering if mixing these 2 fertilizers 1:1 would be best for my trees in ground almost 2yrs.
12-8-6 is for citrus, 6-3-16 for bananas.  Micros combined look ok?  Good amount of Manganese in 12-8-6.
And Calcium question, is 1/3rd a good ratio to add say, 1lb Ca for every 3lbs of fertilizer?  Sandy soil.

Trees i picked based on members here, tt tasting table vids & my preferences are Peach Cobbler, Phoenix, M4, Maha, Cogshall.  Pickering & Raw Honey not in view.

Thank you,
Ed


(https://i.postimg.cc/m1fG8pZ4/12158-B9-F-0792-4-A3-D-85-AC-B6-AB10-AE1-C86.jpg) (https://postimg.cc/m1fG8pZ4)

(https://i.postimg.cc/ts2ppzkd/A651-E534-9-E38-4-E3-E-8-AD7-37-DCB306-A036.jpg) (https://postimg.cc/ts2ppzkd)

(https://i.postimg.cc/bD2h0fhL/EA229-D45-D9-A4-44-F9-8623-4557-FBE7-C655.jpg) (https://postimg.cc/bD2h0fhL)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitGrower on August 09, 2022, 05:31:37 PM
I don't know anything about how far seepage will go.  I imagine that that will vary per soil, etc.

High nitrogen will degrade the quality of most mangos, perhaps India-type especially.

Nam Doc Mai is tolerant of high-Nitrogen.

Here is a picture of the area in question. I put in a pickering a couple weeks ago which you can see on the left. It's about 30' from the edge of the septic field. The septic field is also about 4-5' higher in elevation.

(https://i.postimg.cc/7CGj5znD/20220802-194147.jpg) (https://postimg.cc/7CGj5znD)


I can’t specifically answer your question but I planted around my drain field (same elevation) and I used these (Sidewalk Shield - Tree Root Control Barrier (Standard Duty - 18 inch Depth, 15 feet) https://a.co/d/cNutBLR) in between to provide a barrier. Maybe that can be an option for you.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitGrower on August 10, 2022, 10:21:33 AM

(https://i.postimg.cc/7CmCtvG2/0-ACF5994-E78-C-46-B1-AD8-D-C8-E6-C5997-AD3.jpg) (https://postimg.cc/7CmCtvG2)

(https://i.postimg.cc/q6tCCm7C/18-C7-D655-A8-BD-400-F-987-A-BFEA578-F3-F98.jpg) (https://postimg.cc/q6tCCm7C)

(https://i.postimg.cc/R3M6TCFm/33368-CB1-D27-D-416-A-9230-1209-B32-E2-B9-D.jpg) (https://postimg.cc/R3M6TCFm)

(https://i.postimg.cc/njrX6dBw/51-BAE440-ECCD-44-AC-807-B-D34-D04135289.jpg) (https://postimg.cc/njrX6dBw)

(https://i.postimg.cc/ygGDBFT6/9546-C874-368-E-44-AE-9-F94-1-A8-FDA275-ABE.jpg) (https://postimg.cc/ygGDBFT6)

Any ideas of what may be going on with the trunk of my sugarloaf mango and what, if anything, I can do?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on August 10, 2022, 01:33:29 PM
I had similar happen from support stick.  Rubbed trunk, got infected, ng,
Removed stick, cut trunk off below area, was above graft (as yours looks) & grew back.
Orange sherbet.  It's currently in pot cause i didn't expect it to survive & put m4 in its place.

I will never buy another tree without inspecting trunk & remove stick soon as its home.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: FruitGrower on August 10, 2022, 06:27:33 PM
Thank you!!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on August 10, 2022, 06:42:57 PM

(https://i.postimg.cc/SYJSRNhf/IMG-2697.jpg) (https://postimg.cc/SYJSRNhf)

(https://i.postimg.cc/vgP8Gxpm/IMG-2698.jpg) (https://postimg.cc/vgP8Gxpm)

(https://i.postimg.cc/Lqp8Dptm/IMG-2699.jpg) (https://postimg.cc/Lqp8Dptm)

Any obvious deficiencies/toxicities here please?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 10, 2022, 08:29:59 PM
Eddie F,
One pound gypsum per two pounds 6-3-16.  The other fertilizer is not likely appropriate for mangos.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 10, 2022, 08:36:42 PM
Fruit Grower,
Trunk sunburn or freeze damage,
Weed whacker or wheelbarrow damage.

Cut whole tree off below the damage to re-grow from there,
or leave as is, and
keep tree very short, until wound heals over.  It will become hollow there.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 10, 2022, 08:53:10 PM
Mangoba,
Potassium deficiency.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on August 10, 2022, 09:39:04 PM
Har, thank you.  Manganese will be next question, after i see tomorrow what % i bought a couple yrs ago.  Never opened it, life's been busy.  Hat's off to ya for all you do.  I must've watched 100 tt vids since starting my mango quest.  Good job.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on August 12, 2022, 08:37:53 PM
Har, i realize a soil test is route i should take before adding manganese sulfate.  Leaves don't show any signs of deficiency of it.  What i have is 32% manganese, 56% sulfate.  A little goes a long way by what i've read.

Calcium deficiency i do have it appears on those young trees, if what i researched is correct.
Trunk bark has tiny cracks as if dry old skin.  Some branches where they attach to trunk look to have crack around them too. I applied gypsum.

Wondering if i mix some with water & paint on with brush, would that help?  Hurt?


Thanks,
Ed
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: pineislander on August 12, 2022, 10:49:03 PM

Any ideas of what may be going on with the trunk of my sugarloaf mango and what, if anything, I can do?
Looks like tree was beating against the stake. I saw one which was staked with a metal t-post during Hurricane Irma it beat the trunk up like crazy.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 13, 2022, 07:37:46 PM
Whitewashing tree trunks with lime is a traditional esthetic practice.  Doesn't hurt.  Helps?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on August 15, 2022, 08:17:47 PM
Har, a whitewashing 101 video would be great!
I know nothing about it, what to buy or mix, how it helps, blocking sunlight, reducing heat, soften bark?

I thought of gypsum wash cause we know gypsum helps fruit expand without splitting.
But it'd be brown, not light reflective & who knows if it would absorb & help.

Do the splits/cracks heal over time when applying gypsum to soil?
I'll take a few pictures tomorrow.

Thank you.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: shinzo on August 16, 2022, 11:05:40 AM
Dear all,
My mango seedling (unknown variety) has suddenly this strange flush (the previous flushes in the season were normal), but the current one, the shoots seem to get curved since the past three days. Could it be the extreme heat wave in my city of the past 3 days (over 100F) that makes them curve like this? I am watering it each 3 days. The soil is clay and still moist under the top layer between the waterings


(https://i.postimg.cc/gr4Y45c9/298986921-654824132927345-7039486143132690178-n.jpg) (https://postimg.cc/gr4Y45c9)



(https://i.postimg.cc/VJQHtsyz/299894705-787039439410535-3889565434367386252-n.jpg) (https://postimg.cc/VJQHtsyz)

Here is a picture of the whole tree 5 days ago before the flushes started curving):


(https://i.postimg.cc/FfKZBvRL/299563513-471812174453545-16469385796727388-n.jpg) (https://postimg.cc/FfKZBvRL)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: behlgarden on August 16, 2022, 11:50:35 AM
one thing I noticed is whether we have seedlings or grafted plants, they do well leading to summer heat. if we tinker with them in Summer like graft more onto a nice flushing tree, it for some reason start getting diseases. I lost 3 healthy ones this summer, and I have two seedlings that were grafted Last October are doing great. planning on not touching them any further. Also, refrain pruning them when temps are consistently hitting above 100 in So Cal.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on August 16, 2022, 01:26:53 PM
Shinzo, were you shading the tree at some point? It seems to me that the branches are heading towards the same direction so I'm guessing the lights/shade got them confused.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on August 16, 2022, 01:35:26 PM
Dear all,
My mango seedling (unknown variety) has suddenly this strange flush (the previous flushes in the season were normal), but the current one, the shoots seem to get curved since the past three days. Could it be the extreme heat wave in my city of the past 3 days (over 100F) that makes them curve like this? I am watering it each 3 days. The soil is clay and still moist under the top layer between the waterings


(https://i.postimg.cc/gr4Y45c9/298986921-654824132927345-7039486143132690178-n.jpg) (https://postimg.cc/gr4Y45c9)



(https://i.postimg.cc/VJQHtsyz/299894705-787039439410535-3889565434367386252-n.jpg) (https://postimg.cc/VJQHtsyz)

Here is a picture of the whole tree 5 days ago before the flushes started curving):


(https://i.postimg.cc/FfKZBvRL/299563513-471812174453545-16469385796727388-n.jpg) (https://postimg.cc/FfKZBvRL)
Looks normal, new growth is always bendy, especially on a young tree with thin branches. Heat wave is probably adding some stress and could be a factor in the bending, but I'd just leave it.
I'd suggest adding some more days between with that watering schedule; sounds like your soil doesn't drain very well, and constantly damp roots can cause problems.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: shinzo on August 16, 2022, 03:28:52 PM
Thank you Mangoba and Jakefruit for your replies.
@ Mangoba: No i didn't shade the tree.
I hope it will get back to normal or at least that the curves decrease. I tried to stake them to small chopsticks but it was difficult to keep them in place and i was affraid to break them, so i left them as they are.
Edit : I couldn't keep myself from figuring out how to realign those branches, and i found the idea of rolling small rectangles of relatiely hard paper on them , i could thus adjust each "tube" to the height desired. I hope they will not bake inside in the heat of the morning (white paper + openings in the bottom and the top, i hope this will reduce the baking).

(https://i.postimg.cc/kDxZpNMx/299482711-596092965307076-6556279465609217756-n.jpg) (https://postimg.cc/kDxZpNMx)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Victoria Ave on August 22, 2022, 11:27:18 AM
Hi all, what is causing this leaf curl on my new growth. I haven’t seen my trees do this in a while and usually I would think it is insects but I haven’t seen any on the new leaves (usually see evidence of ants)


(https://i.postimg.cc/8jYhjsqd/0-D823413-4053-4-AD3-8-EBB-740860-FCF48-C.jpg) (https://postimg.cc/8jYhjsqd)

(https://i.postimg.cc/1fXGmDY5/EF6-C9-E1-E-5-BC5-45-AC-9-F66-D438-E0-E12677.jpg) (https://postimg.cc/1fXGmDY5)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 22, 2022, 04:07:45 PM
probably aphids or scales.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Victoria Ave on August 23, 2022, 12:20:50 AM
I have sprayed with a new oil solution and will keep it up every 3 days. Hopefully that will end whatever is doing it
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on August 31, 2022, 05:07:37 AM

(https://i.postimg.cc/YGP40BWs/IMG-2769.jpg) (https://postimg.cc/YGP40BWs)

(https://i.postimg.cc/JGNnVkPg/IMG-2770.jpg) (https://postimg.cc/JGNnVkPg)

(https://i.postimg.cc/fVWMGg3t/IMG-2773.jpg) (https://postimg.cc/fVWMGg3t)

(https://i.postimg.cc/Ff5X9WzV/IMG-2768.jpg) (https://postimg.cc/Ff5X9WzV)

Do you notice any concerning issues besides a Potassium deficiency that I'm treating already please? I'm just worried that the leaf necrosis spot up in the leaf by the petiole in the first image is telling more than K deficiency?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on August 31, 2022, 10:37:13 PM
Not Potassium deficiency.  Likely salt burns/sunburns.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on September 01, 2022, 01:00:24 AM
Sun burn is indeed very likely but I’m also concerned about the former. Here is how I’m currently feeding these in ground seedlings.

https://tropicalfruitforum.com/index.php?topic=48716.0
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 01, 2022, 02:10:27 PM
Spaugh's recommendation on that other thread sounds reasonable.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on September 01, 2022, 03:39:25 PM
Spaugh's recommendation on that other thread sounds reasonable.

Har, if I follow that rate throughout the growing season I would end up at best with just 0.2*10*26 = 52g about 10 folds less than UF recommended rate?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 01, 2022, 08:48:45 PM
I normally expect to apply granular fertilizer;  then anything added to the irrigation or spray is extra.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Amy K on September 02, 2022, 02:42:30 PM
I'm not sure what's happening to my new leafs. This is a mango tree grown from seeds. It is about 3 years old and currently live in a 10 gallon pot. It was a healthy looking tree. Recently i bought a cutting and did my first graft on the lower branch about a week ago. Now i notice this black spots all over my new leafs at the higher branch. The lower branch is looking fine still. This is my first mango tree so i hope i didn't bring some kind of disease to it with budwood.

First two pictures show the front and back of the affected leaves. The last picture is the branch below the graft
(https://i.postimg.cc/ctvz6C68/IMG-20220902-124036.jpg) (https://postimg.cc/ctvz6C68)

(https://i.postimg.cc/PCs7rtHP/IMG-20220902-124058.jpg) (https://postimg.cc/PCs7rtHP)

(https://i.postimg.cc/Z0Qg28DP/IMG-20220902-124117.jpg) (https://postimg.cc/Z0Qg28DP)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: boxturtle on September 02, 2022, 11:22:44 PM

(https://i.postimg.cc/FYLpRTmV/20220902-161050.jpg) (https://postimg.cc/FYLpRTmV)

What would cause the bark to be like this?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 03, 2022, 08:18:13 PM
Amy K,
Spray with Copper.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Carbo on September 04, 2022, 07:25:19 PM
Honey Kiss, in ground for one year.  Previous growth flush and now this one looks like this.  Otherwise the tree appears healthy.
(https://i.postimg.cc/VS3BW7NX/20220904-191526.jpg) (https://postimg.cc/VS3BW7NX)

(https://i.postimg.cc/d77jdMJq/20220904-191532.jpg) (https://postimg.cc/d77jdMJq)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fruitnut1944 on September 04, 2022, 08:03:09 PM
The Honey Kiss has iron deficiency. Usually due to high pH or excess water. Chelated iron has worked for me. But I'm not certain that will work for every case.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Amy K on September 04, 2022, 08:27:24 PM
Amy K,
Spray with Copper.

I'm not sure if you meant i need to spray my plant with copper or it been spray with copper. Either way, i haven't spray it with any thing yet
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Seanny on September 06, 2022, 12:10:13 AM
Boxturtle,

sunburn
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fruitnoob on September 06, 2022, 11:29:59 AM
Admins: could you please pin this thread? It is super helpful, especially to newbies like myself.
Edit: This thread was already pinned here https://tropicalfruitforum.com/index.php?topic=4.0 (#11). Thanks Admins, and sorry.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fruitnoob on September 11, 2022, 08:17:20 AM


Good morning gurus,

My prized Kiew Yai tree has a lot of these, which I thought were freeze damages and have not taken them seriously until I found this forum.
Are these spots from anthracnose? If so, should i: 1, cut off all damaged leaves, and 2. keep spraying copper fungicide every couple of weeks until there's no sign of anthracnose?
The pictures are front and back of the same leaves. There are so many of them :(

Thanks.
(https://i.postimg.cc/WD6h9P2n/IMG-E5611.jpg) (https://postimg.cc/WD6h9P2n)

(https://i.postimg.cc/ZBw0SFvv/IMG-E5612.jpg) (https://postimg.cc/ZBw0SFvv)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mangoba on September 11, 2022, 09:54:41 AM
I have been growing mango seedlings with a very large genetic diversity. I have one of the toughest soils, but the general impression has been that the more the Indian/Alphonso spiciness gene gets involved, the more likely the seedling would struggle. Do you notice any major differences when it comes to nutrition requirements of Indian/Alphonso types?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on September 20, 2022, 07:46:26 PM
Har, photos of bark splits taken today.  I applied roughly 2 cups Gypsum each tree before all this good rain.
I really don't want to paint them white, does the paint itself help hold moisture in?  I'd use brown if so.
Also wondering if i painted with Gypsum & water, would it soak in & help soften bark?
I have Neem, oil would soften but might be like baby oil to us.  Thoughts?

Leaf tip burn was from me learning that 1oz of micros per gallon was too much.  1/2oz better, lesson learned.

Thank you,
Ed


Peach Cobbler

(https://i.postimg.cc/hXz1LrY2/peach-cobbler1.jpg) (https://postimg.cc/hXz1LrY2)

(https://i.postimg.cc/75FMmz8w/peach-cobbler2.jpg) (https://postimg.cc/75FMmz8w)

(https://i.postimg.cc/5H85Gtbv/peach-cobbler3.jpg) (https://postimg.cc/5H85Gtbv)


Maha

(https://i.postimg.cc/H8kQV454/maha1.jpg) (https://postimg.cc/H8kQV454)

(https://i.postimg.cc/8jq6SVyb/maha2.jpg) (https://postimg.cc/8jq6SVyb)

(https://i.postimg.cc/YvYm2yZB/maha3.jpg) (https://postimg.cc/YvYm2yZB)


Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Oolie on September 20, 2022, 08:36:55 PM
I think the bark split is normal. When I paint, I use Lime, not gypsum, as gypsum stays water soluble, lime sets up in a more permanent coating (holds up to rain). You might have luck with gypsum, but I would expect it to run during application much more easily.

As far as moisture retention, white will only reflect light to lower the likelyhood of burning, the surface area ratio of leaves to roots, as well as dryness of the air will be the factors that affect drying out of the tree.
Also, the bark is dead, and a thicker layer will help protect against burning of the living portion beneath (the cambium).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on September 20, 2022, 10:46:17 PM
Long vertical splits of the corky outer bark is normal maturation.

Short splits with gummosis or running ooze are not normal, and are said to be from "abiotic stresses"--- still rather debated.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on October 07, 2022, 04:39:37 PM
Noticed these concerning black spots on a Fruit Punch scion I grafted 2 months ago. I’m assuming it’s MBBS (I’d be happy to hear I’m wrong), curious as to what I should do with it now. It’s the only a fruit Punch scion that took.

(https://i.postimg.cc/5QbqkHKk/mbbs.jpg) (https://postimg.cc/5QbqkHKk)  (https://i.postimg.cc/YLRfcpJ2/mbbs2.jpg) (https://postimg.cc/YLRfcpJ2)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: stephenb on October 27, 2022, 06:11:36 PM
I'm trying to get a diagnosis of what's wrong with the new leaves on my Kent and Juicy Peach. They've both had abundant new growth in the last two weeks, but some of it with these speckles that grow. Anthracnose? Bacterial spot? Insects of some sort? Thanks for any help you can give.
(https://i.postimg.cc/6yRPyBDs/DSCN0519.jpg) (https://postimg.cc/6yRPyBDs)

(https://i.postimg.cc/065XWDrx/DSCN0517.jpg) (https://postimg.cc/065XWDrx)

(https://i.postimg.cc/XB5sGg1K/DSCN0516.jpg) (https://postimg.cc/XB5sGg1K)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 28, 2022, 08:55:24 PM
Jake Fruit,
Maybe anthracnose, maybe mango bacterial black spot, or other.

Stephenb,
The middle picture looks like Powdery Mildew, maybe,
the others, I have no idea.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Amy K on October 29, 2022, 02:08:13 PM
Not a disease but I just want confirmation. Is this flower bud?

This is my grafted Maha Chanok. The graft took and look nice but it keep getting taller so I pruned the tips. Hoping it will force to make more side branches. It's been almost a month of nothing happening since. Finally I saw little bud pushing. I'm happy but then I notice this new growth look a bit off. There no way this little stick is making flower? Should I snip it of right the way? It's not strong enough to hold a fruit any way. I'm worry that the graft might snap if I let it hold a fruit.
(https://i.postimg.cc/wR30bgG0/IMG-20221029-135159.jpg) (https://postimg.cc/wR30bgG0)

(https://i.postimg.cc/87LwYyZQ/IMG-20221029-135226.jpg) (https://postimg.cc/87LwYyZQ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on October 29, 2022, 08:35:59 PM
Let it make small fruits, then remove the whole flower pannicle.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Paquicuba on November 22, 2022, 01:38:29 PM
Hello experts! Any idea what's going on with this tree? Fungus or some sort of nutritional deficiency? Your help is really appreciate it. Thanks!
(https://i.postimg.cc/Yvyhqfkb/IMG-5886.jpg) (https://postimg.cc/Yvyhqfkb)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Ripple on November 23, 2022, 05:16:03 PM
Is this one of the common mango diseases? It looks like a powdery black mildew (powdery mildew?) but the photos I see online are more of a whitish powdery appearance. This is black moldy looking stuff affecting the deep part of the flower pannicle (and stem part). Thre is also some spider web looking stuff--which is what I saw initially and left it alone. What is it? Should I act?

Thank you for having a look! :D
(https://i.postimg.cc/D8FhmrSS/20221124-085630.jpg) (https://postimg.cc/D8FhmrSS)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on November 25, 2022, 05:45:14 PM
Paquicuba,
Did this show up after Hurricane Ian?  Did you get winds near Category One?

Ripple,
Unable to magnify.  What I can see looks healthy.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on November 27, 2022, 07:25:48 PM
Har & Oolie, just want to thank you for replies to my question.  I wrote long reply a month ago but lost it when my failing modem router's wifi cut out.  Had me po'd.  Replaced it since.
The splits on trunk were sticky but not oozing so i let it be.  I think they're ok.

I did see leaves on some after tropical storm winds get mild damage.  Are mango trees subject to wind burn?  Wondered after seeing a previous persons question.

Ed
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Paquicuba on November 28, 2022, 10:56:30 AM
Paquicuba,
Did this show up after Hurricane Ian?  Did you get winds near Category One?

Around the same time, but we didn't get affected by IAN at all.

Thanks!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: qcguy4198 on December 16, 2022, 07:54:06 AM
Please help me understand what my Mango tree is telling me. I have a Mango tree in my yard. Not sure how old it is, but the trunk is about 8-9" in diameter. A lot of the leaves are showing yellow on the outer edges.  Thank you for your thoughts.

(https://i.postimg.cc/BLXLr93R/Iphone-pics-12-15-22-016.jpg) (https://postimg.cc/BLXLr93R)

(https://i.postimg.cc/LhWB6D0z/Iphone-pics-12-15-22-017.jpg) (https://postimg.cc/LhWB6D0z)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 16, 2022, 11:51:19 AM
Deficiency of Magnesium.

Soak your feet in some warm water with bitter salt/ Epsom Salt, then  pour it around the tree's drip ring.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on December 16, 2022, 12:03:09 PM

(https://i.postimg.cc/Tp2r2hYD/31-FF66-CF-E1-FE-484-C-8-AD6-714495-CDA399.jpg) (https://postimg.cc/Tp2r2hYD)
What would cause this cut to not heal?
I fertilize 8-3-9
But realize too much N
What is a good comp for fertilizer?

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 16, 2022, 02:50:34 PM
Looks healed!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on December 16, 2022, 02:56:13 PM
Saw a bunch of these tiny beetle-looking bugs that the interwebs says are young shield bugs/stink bugs. I let them be, and they dispersed after I interrupted their gathering. Should I have crushed them?

(https://i.postimg.cc/kRWKzBxs/IMG-20221216-143129610-HDR-2.jpg) (https://postimg.cc/kRWKzBxs)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on December 19, 2022, 11:42:17 AM
Fliptop,
I don't know these insects.

I suggest you post this picture to Facebook Group:  Florida Entomology
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on December 20, 2022, 09:30:33 AM
Thanks, Har! I don't have Facebook, but am now fairly certain these were baby Stinkbugs. Didn't know if I should have killed them on the spot, but it's too late now, as they're long gone.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Zion506 on December 24, 2022, 11:42:22 AM
What happened to co-existing with nature? Or even organic growing principles.

I see many of these bugs and spots on my mango trees and don’t have to poison the trees or murder all of nature’s little creatures. The bugs just need a place to be and breed and live. When you smash everything that lands on “your” trees youre just destroying pollinators. Trees have coexisted with bugs long before you came along. The ego of you guys is crazy sad. Bugs live in nature and the trees are their houses.

And why does everyone immediately turn to pesticides? Don’t you know that it’s just ending up in your body. Into the soil and into the fruit. Nature usually just shows you the answers in nearby plants. Try companion planting or making teas from the “weeds”.

Growing fruit trees and helping them along needs to be our opportunity to coexist and cocreate. When you use the same principles that messed up everything in the grocery store in the first place, you’ve lost the plot.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on December 24, 2022, 12:35:15 PM
Thank you for your post, Zion509! Up till then, I had no idea bugs and trees coexisted?! I apologize for asking a question--my.crazy sad ego thought it was fair game to ask a question on a fruit forum, trying to learn from others (including you🙂).

I wonder, though, assuming someone is immediately turning to pesticides might be your own crazy sad ego getting in the way?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on January 10, 2023, 10:08:09 AM
This is a recently purchased Florigon. Leaves were plenty and looked great when purchased mid-December, but a lot have developed issues and dropped.

Tree is in original container. It was brought indoors for five days during the recent cold spell (indoors was low light). Outside, mornings have been full of dew and at times fog. I've watered it, but have not done anything else.

I'm guessing this is either Red Rust or Leaf Blight? What if anything should be done? I get nervous seeing so many leaves drop. If it was warmer, I'd plant it--trees here do much better in the ground.

Thanks!

(https://i.postimg.cc/fSh947h8/IMG-20230110-081144601-HDR-2.jpg) (https://postimg.cc/fSh947h8)
Title: Potassium Sulfate
Post by: EddieF on January 21, 2023, 05:42:34 PM
Hi all.  I've read study that yield increased best with 1% foliar applications (compared to .5 or none) and mentioned the sulfur helped fight fungus.

Anyone try this?  I sprayed my big old Kent, no panicles yet, did make leaves nice dark green.
I use copper occasionally when Anthracnose starts getting bad.

Would a drench help as well?

Also wonder if it would help fight powdery mildew or hurt & chase away pollinators?
Sulfur's much harder for me to apply.

Thanks,
Ed
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Oolie on January 22, 2023, 11:45:32 PM
If the antifungal effect is due to the lowering of surface pH, you might have more success with potassium bisulfate.

That said, the potassium will help the tree grow and may help with bloom stimulation.
Title: Re: Potassium Sulfate
Post by: Orkine on January 23, 2023, 05:59:11 PM
Ed

I believe many mango growers use  0-0-50 (potassium sulfate) in granular form.  There are lots of post describing its use and value.  Yours is the first I have seen it applied as a foliar application, interesting. 
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: CarloGolfer on January 24, 2023, 03:45:18 PM
Is this anything? I assumed it was damage from being beaten up by the hurricane. The damage is visible from the underside of the leaves.


(https://i.postimg.cc/G4z5NjD9/20230124-154213.jpg) (https://postimg.cc/G4z5NjD9)


(https://i.postimg.cc/xJmg0GXv/20230124-154202.jpg) (https://postimg.cc/xJmg0GXv)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on January 24, 2023, 07:39:10 PM
Oolie & Orkine, thanks for replies.  I'm sorry for posting it in this great diagnosis thread.
Tried deleting it after i realized mistake (should be it's own thread) but couldn't.
We'll stop talking about it here.

Ed
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Honest Abe on January 25, 2023, 06:54:37 PM
Any id on this one? On my pineapple pleasure and sugarloaf?
Im under the impression that it’s anthracnose or MBBS?

Should I treat it or leave it

Thanks

Abe


(https://i.postimg.cc/wtQBbGnM/8-B85-D396-C0-D3-4984-ADBD-5-CF5-B6-E3-FD94.jpg) (https://postimg.cc/wtQBbGnM)

(https://i.postimg.cc/G8MmbsL1/E447-AF48-5-A28-412-B-A749-D88783117200.jpg) (https://postimg.cc/G8MmbsL1)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Ivymantled on January 26, 2023, 11:35:04 PM
Hi,
This is my first post, so I apologize if what I'm asking has been covered ad nauseum.
My father has 8-10 mango trees and 3-4 longan trees in his backyard.
Unfortunately, his health has declined and he's no longer able to care for them, so I'm seeing if I can help.

His trees vary from 2 meters tall to 8-10 meters tall.
They are 20-40 years old.
They have not been pruned for airflow.
Some have branches down at ground level.
None have ever been treated with any pesticide or fungicide before.
They have been fertilized.
In one or two previous years some of the mangoes produced a lot of fruit.
The longans have never produced significant fruit.
Neither has produced any fruit in the last few years.

The questions I would like to ask are:
1. If his mango trees have been diseased for some years (4 years plus), can they be rescued?
2. If so, will they withstand radical pruning, since every branch on the trees seems to be affected?
3. Any help identifying the diseases or problems based on the images and description below:
    • Fruit appears, but then the tip of each branch turns black, and the fruit shrivel and die.
    • Many leaves look unhealthy or diseased
    • Trunk and branches of trees look covered in moss, mould, or fungus
4. Can longans catch diseases from mangoes? They seem to exhibit similar symptoms.
    Fruit appear, then the fruit and branch tips shrivel up, dry, and die.
5. Can the longans survive radical pruning as well?
6. I have read that copper and other fungicides might help after pruning affected branches.
    Any other advice is appreciated.

THANK YOU in advance for any help.

(https://i.postimg.cc/hzTL5VMQ/IMG-8640.jpg) (https://postimg.cc/hzTL5VMQ)

(https://i.postimg.cc/D4hrkmYj/IMG-8642.jpg) (https://postimg.cc/D4hrkmYj)

(https://i.postimg.cc/yWCtYPM5/IMG-8645.jpg) (https://postimg.cc/yWCtYPM5)

(https://i.postimg.cc/4H1zJZDJ/IMG-8647.jpg) (https://postimg.cc/4H1zJZDJ)

(https://i.postimg.cc/HJf0z60C/IMG-8649.jpg) (https://postimg.cc/HJf0z60C)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DAC on January 31, 2023, 10:21:03 AM
All - I looked through as best I could to try to find the same issues I’m having before posting this. I didn’t see my exact symptoms. I’m guessing I have an anthracnose issue?? Curious if the new growth bud has an issue, what the silvery looking lesions are and what the scabby looking stuff is on the branch. This is a Keitt - planted about 3 years ago and this will be the first year it flowers - if it flowers. Curious what you all think?
(https://i.postimg.cc/kVfcXbtg/0-DF305-DB-C477-47-EC-8-A30-1-E5-F8-A3-A7341.jpg) (https://postimg.cc/kVfcXbtg)

(https://i.postimg.cc/ykZvXx2L/4872741-E-E0-E3-463-F-B0-A4-67-E3-AD666-A67.jpg) (https://postimg.cc/ykZvXx2L)

(https://i.postimg.cc/dk5SXf9n/82-DDB895-62-AD-4-C00-907-B-02-B3-DA8-ABD53.jpg) (https://postimg.cc/dk5SXf9n)

(https://i.postimg.cc/V0S4hkvL/972-F92-C6-C67-F-46-D1-98-E4-F715-A6-BC0-CE2.jpg) (https://postimg.cc/V0S4hkvL)

(https://i.postimg.cc/ZWPH2gb3/991-BB472-D650-4-FEF-A5-B4-0-ECF3-D183500.jpg) (https://postimg.cc/ZWPH2gb3)

(https://i.postimg.cc/7Cx9kVhR/A8602-DA9-B203-41-F0-AF48-4-DE195-F3-DD27.jpg) (https://postimg.cc/7Cx9kVhR)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on February 03, 2023, 09:11:53 PM
Eddie F., Potassium Bicarbonate is good.  I haven't heard of Potassium Bisulfate--- I will have to look it up.

Honest Abe, mite damage.

Ivymantled, spray for anthracnose, with Copper products, alternating with other fungicides.

DAC, your Keittt looks quite normal.  Spray with Copper or Sulfur before flowers actually open.  Check that root crown is not buried.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Ivymantled on February 04, 2023, 03:10:28 AM
Guanabanus
Thank you for the reply. I'd read that copper didn't work on existing infections so I wasn't sure. I'll give it a go as you suggest - appreciate your time.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on February 04, 2023, 10:08:52 AM
Har, thanks as always & good to see ya pop in!  :)  I figure you're busy as a bee inspecting & taking care of panicles & blooms.

Found this interesting article googling potassium bicarbonate.  Compares it & others.  Acetic acid looks like a winner, sulfur great (as you know) too.
http://www.plantarchives.org/20-1/1755-1764%20(5941).pdf
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DAC on February 04, 2023, 06:34:07 PM
Guanabanus thank you! That’s good to hear - I have very little perspective. Looking at increasing my mango varieties here soon though! I’m super excited about the potential of getting a couple of mangos off my tree this year
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Timboslice on March 01, 2023, 09:44:13 AM
Need some advice regarding my lemon zest tree.  It looks sad and is always attacked by weevils.  I fertilize it with 0-3-16 twice a year.  It must be getting too much or too little of something. All my other trees are looking ok
(https://i.postimg.cc/fk0qb3Hz/20230301-092454.jpg) (https://postimg.cc/fk0qb3Hz)

(https://i.postimg.cc/zbytK38k/20230301-092504.jpg) (https://postimg.cc/zbytK38k)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 04, 2023, 07:49:24 PM
When tree is still small, or growth is poor, or there are few leaves, or foliage is yellowed, fertilize with a mix that includes 6% or 8% Nitrogen, rather than 0%.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tropical_tree_for_me on March 05, 2023, 05:06:11 AM
Hello can anyone tell me what’s on my mango leaves? It’s a small grafted tree, Thai 3 seasons variety, not sure if there’s an actual cultivar name for it, it’s been in ground for about 6-7 months. Today I noticed a bunch of black spots all over a lot of the leaves.

Can it be saved?





(https://i.postimg.cc/JyQs6RC5/580321-AC-70-BA-4-A6-F-952-D-C4532-A4-FA59-E.jpg) (https://postimg.cc/JyQs6RC5)

(https://i.postimg.cc/Z9Ybq3X6/71-BD13-D3-68-A4-48-ED-956-B-E2-C066-C95-CED.jpg) (https://postimg.cc/Z9Ybq3X6)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: UAR on March 06, 2023, 11:20:51 AM
Hi all

I have a mango plants that has burnt/brown edges and recently they’re getting progressively worse. Today I started noticing a few leaves falling.
The plants are potted with Miracle grow potting mix, the location is Tampa FL.

Any tips on how to help this plans recover would be appreciated. Thanks
(https://i.postimg.cc/1nR7z4cD/7-BDED051-8-C4-A-4-EFB-9219-C2-E40-C4189-E9.jpg) (https://postimg.cc/1nR7z4cD)

(https://i.postimg.cc/TytqC0gW/337607-BA-B58-A-42-D2-92-CF-70-AAA6-F6-CBC8.jpg) (https://postimg.cc/TytqC0gW)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on March 06, 2023, 11:50:11 AM
Hello can anyone tell me what’s on my mango leaves? It’s a small grafted tree, Thai 3 seasons variety, not sure if there’s an actual cultivar name for it, it’s been in ground for about 6-7 months. Today I noticed a bunch of black spots all over a lot of the leaves.

Can it be saved?





(https://i.postimg.cc/JyQs6RC5/580321-AC-70-BA-4-A6-F-952-D-C4532-A4-FA59-E.jpg) (https://postimg.cc/JyQs6RC5)

(https://i.postimg.cc/Z9Ybq3X6/71-BD13-D3-68-A4-48-ED-956-B-E2-C066-C95-CED.jpg) (https://postimg.cc/Z9Ybq3X6)


I've never seen that before; my guess would be either leaf gall midges or mango scab. Hopefully someone wiser will give you a better diagnosis, but I would research those two conditions ASAP and see if you can head-off whatever it is.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on March 06, 2023, 12:08:17 PM
Hi all

I have a mango plants that has burnt/brown edges and recently they’re getting progressively worse. Today I started noticing a few leaves falling.
The plants are potted with Miracle grow potting mix, the location is Tampa FL.

Any tips on how to help this plans recover would be appreciated. Thanks
(https://i.postimg.cc/1nR7z4cD/7-BDED051-8-C4-A-4-EFB-9219-C2-E40-C4189-E9.jpg) (https://postimg.cc/1nR7z4cD)

(https://i.postimg.cc/TytqC0gW/337607-BA-B58-A-42-D2-92-CF-70-AAA6-F6-CBC8.jpg) (https://postimg.cc/TytqC0gW)
Browning of leaf edges looks normal; chemical fertilizer burn around the edges of old leaves in potted mangoes is common, nothing to worry about. I don't think the tree looks great; I'd guess it's roots are staying too wet. How often are you watering it?


Are you planning to plant it in-ground? I would either get it in the ground right away or get it in a bigger pot with a better soil mix (use the search on here to find some soil mixes that mangoes like). Most store-bought soil mixes aren't great for mangoes, they hold too much moisture. You are coming into the growing season, do one or the other ASAP.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: UAR on March 06, 2023, 01:49:39 PM
Thanks for the reply!
If the browning of the edges is normal in this situation, what would you say doesn't look good about the tree overall? I'm not sure what all to look for but the tree looks fine to me other than the edges. Should I be looking for something else?

I do plan on planting it in ground. I've been a little nervous doing it myself in fears of not doing it right and putting the tree through more stress or killing it. Is planting it in ground any more difficult than potting it? Do I need specific soil for in ground and need to monitor it differently?

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: UAR on March 06, 2023, 01:50:54 PM
Hi all

I have a mango plants that has burnt/brown edges and recently they’re getting progressively worse. Today I started noticing a few leaves falling.
The plants are potted with Miracle grow potting mix, the location is Tampa FL.

Any tips on how to help this plans recover would be appreciated. Thanks
(https://i.postimg.cc/1nR7z4cD/7-BDED051-8-C4-A-4-EFB-9219-C2-E40-C4189-E9.jpg) (https://postimg.cc/1nR7z4cD)

(https://i.postimg.cc/TytqC0gW/337607-BA-B58-A-42-D2-92-CF-70-AAA6-F6-CBC8.jpg) (https://postimg.cc/TytqC0gW)
Browning of leaf edges looks normal; chemical fertilizer burn around the edges of old leaves in potted mangoes is common, nothing to worry about. I don't think the tree looks great; I'd guess it's roots are staying too wet. How often are you watering it?


Are you planning to plant it in-ground? I would either get it in the ground right away or get it in a bigger pot with a better soil mix (use the search on here to find some soil mixes that mangoes like). Most store-bought soil mixes aren't great for mangoes, they hold too much moisture. You are coming into the growing season, do one or the other ASAP.

Thanks for the reply!
If the browning of the edges is normal in this situation, what would you say doesn't look good about the tree overall? I'm not sure what all to look for but the tree looks fine to me other than the edges. Should I be looking for something else?

I do plan on planting it in ground. I've been a little nervous doing it myself in fears of not doing it right and putting the tree through more stress or killing it. Is planting it in ground any more difficult than potting it? Do I need specific soil for in ground and need to monitor it differently?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: tropical_tree_for_me on March 06, 2023, 01:53:48 PM

I've never seen that before; my guess would be either leaf gall midges or mango scab. Hopefully someone wiser will give you a better diagnosis, but I would research those two conditions ASAP and see if you can head-off whatever it is.

Thank you for the response, it appears to look like leaf gall midgies, what’s the best approach to handling this infestation? From reading some websites they recommend some sprays but I don’t have access to Bifenthrin or chlorpyrifos.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on March 06, 2023, 06:14:24 PM
Thanks for the reply!
If the browning of the edges is normal in this situation, what would you say doesn't look good about the tree overall? I'm not sure what all to look for but the tree looks fine to me other than the edges. Should I be looking for something else?

I do plan on planting it in ground. I've been a little nervous doing it myself in fears of not doing it right and putting the tree through more stress or killing it. Is planting it in ground any more difficult than potting it? Do I need specific soil for in ground and need to monitor it differently?
Your leaves are droopy and it looks like it's losing leaves while they are still green. Normally, the tree will pull all the nutrients it can back out of the leaf before letting it go; you'd see the leaf go yellow before falling off. I'd say you are definitely having root issues, based on those leaves and how they are dying at the tips.


Putting it in the ground is easy, just be sure it's a sunny, well-draining location with enough space. No need to amend the soil, just dig a hole and drop it in (making sure there are no air pockets). Be sure not to plant it deep, you want the top roots of the tree slightly-exposed; a continually wet trunk is bad. Mango trees don't like continually damp conditions, they can adapt, but it's best to only water as needed. Get it in the ground now, before it gets super-hot and sunny.


 I'm no pro, use the search function on here to find more tips on what you want to do.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on March 06, 2023, 06:19:20 PM

I've never seen that before; my guess would be either leaf gall midges or mango scab. Hopefully someone wiser will give you a better diagnosis, but I would research those two conditions ASAP and see if you can head-off whatever it is.

Thank you for the response, it appears to look like leaf gall midgies, what’s the best approach to handling this infestation? From reading some websites they recommend some sprays but I don’t have access to Bifenthrin or chlorpyrifos.
No idea, I've never dealt with that before. You could wait for someone else to chime in here, but I'd suggest going to a local nursery that sells mango trees and asking them on how to deal with the issue. Don't bring any of that plant material with you, but be sure you have some pics on your phone that show the issue.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: onur on March 08, 2023, 07:59:31 PM
Hi

The tips of the branches of my mango tree (pina colada) are getting dark and the panicles are drying. What does it stem from?

Thanks
(https://i.postimg.cc/p9TzfgZJ/IMG-20230308-WA0000.jpg) (https://postimg.cc/p9TzfgZJ)

(https://i.postimg.cc/XGB5hdtZ/IMG-20230308-WA0001.jpg) (https://postimg.cc/XGB5hdtZ)

(https://i.postimg.cc/1gj6JJ7h/IMG-20230308-WA0002.jpg) (https://postimg.cc/1gj6JJ7h)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on March 09, 2023, 09:03:29 AM

HiThe tips of the branches of my mango tree (pina colada) are getting dark and the panicles are drying. What does it stem from?Thanks
Looks like Powdery Mildew (PM), definitely some sort of mold or fungus. Not sure how susceptible PC is to PM, some varieties fight it off and hold onto their flowers/fruit better than others. It can lay waste to an entire tree's flowers/tiny fruit, but it seems like most the time some amount of fruit hangs on. You can spray sulfur/potassium carbonate as a preventative/treatment or try trimming it out. I've been trimming this year, it's definitely working in controlling spread, but it's time consuming (I'll probably spray next season).
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: onur on March 09, 2023, 02:50:29 PM

HiThe tips of the branches of my mango tree (pina colada) are getting dark and the panicles are drying. What does it stem from?Thanks
Looks like Powdery Mildew (PM), definitely some sort of mold or fungus. Not sure how susceptible PC is to PM, some varieties fight it off and hold onto their flowers/fruit better than others. It can lay waste to an entire tree's flowers/tiny fruit, but it seems like most the time some amount of fruit hangs on. You can spray sulfur/potassium carbonate as a preventative/treatment or try trimming it out. I've been trimming this year, it's definitely working in controlling spread, but it's time consuming (I'll probably spray next season).

I had sprayed neem oil already. I will spray sulfur after a week. Probably, pollinators will keep away for a while... Thank you.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on March 09, 2023, 04:27:39 PM

HiThe tips of the branches of my mango tree (pina colada) are getting dark and the panicles are drying. What does it stem from?Thanks
Looks like Powdery Mildew (PM), definitely some sort of mold or fungus. Not sure how susceptible PC is to PM, some varieties fight it off and hold onto their flowers/fruit better than others. It can lay waste to an entire tree's flowers/tiny fruit, but it seems like most the time some amount of fruit hangs on. You can spray sulfur/potassium carbonate as a preventative/treatment or try trimming it out. I've been trimming this year, it's definitely working in controlling spread, but it's time consuming (I'll probably spray next season).

I had sprayed neem oil already. I will spray sulfur after a week. Probably, pollinators will keep away for a while... Thank you.
If I recall correctly, sulfur is only useful as a preventative; once the PM sets in, you need potassium carbonate or some other chemical to fight the PM. Do some quick research before you use the sulfur, it might not do anything against the PM situation you are facing.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on March 15, 2023, 10:17:06 AM

(https://i.postimg.cc/Z9YQb8KM/IMG-20230315-094030840-2.jpg) (https://postimg.cc/Z9YQb8KM)

This is on some Sugarloaf fruitlets. Not all, thank goodness gracious. What is it and should anything be done? Thanks!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: leanne.rodrigues17 on March 23, 2023, 10:49:52 PM
Hi Har,

I’m going a mango plant from seed. Started growing it in July of 2022. This past month, the leaves at the top have started gaining these black spots on the edges and have slowly moved downward.
I thought it was anthracnose so I started spraying it with a copper fungicide weekly….it still seems to be spreading.
What am I doing wrong?? Any idea what this is? I’ve already lost 3 leaves and it feels like I’m about to lose another!!!
(https://i.postimg.cc/tsbYb9Jf/D1-F1-E381-87-AA-4872-A7-CD-AA6-F994-A0-E7-B.jpg) (https://postimg.cc/tsbYb9Jf)

(https://i.postimg.cc/tsbYb9Jf/D1-F1-E381-87-AA-4872-A7-CD-AA6-F994-A0-E7-B.jpg) (https://postimg.cc/tsbYb9Jf)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DuaneC59 on March 24, 2023, 01:43:49 AM

(https://i.postimg.cc/mPQN2hxK/PXL-20230318-213603186-MP.jpg) (https://postimg.cc/mPQN2hxK)

4 weeks ago I began applying weekly copper to the new buds on this PPK.  We had several days of temps down to 35 degrees followed by heavy rain. In the last 2 weeks most of the buds that I sprayed have turned brown but the PPK has the leaf changes shown here and the dead flowers.  I thought most of the copper had been washed off by the rain which was heavy for Southern California. I see similar bud damage on most of the trees that I sprayed except  Sein ta Lone and a few others. The copper was pretty dilute - only 3ml of concentrate per quart.  I am in California, Zone 9b/10a.  Any thoughts?

Thanks.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 30, 2023, 09:12:57 PM
Duane,
Which copper product did you use, and how much does the label say to use per gallon?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 30, 2023, 09:17:58 PM
Fliptop,
Probably a deficiency of Boron.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 30, 2023, 09:20:20 PM
Leanne,
Is the potting soil quite black and wet, or actually compost?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on March 30, 2023, 09:42:22 PM
tropical tree for me,
Scale insect infestation.  I don't know specific pest identification or product availability in Laos.

Neem oil sprays, with several repetitions about a week apart, in cool evenings or very early mornings.  Follow label instructions of your product.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on April 01, 2023, 04:58:22 PM
Thank you, Har!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DuaneC59 on April 01, 2023, 06:43:04 PM
Duane,
Which copper product did you use, and how much does the label say to use per gallon?

Thanks Guanabanus,
It was BONIDE brand 0.5 to 2 fl ounces per gallon. My solution was very dilute (~12 ml per gallon). I was applying it weekly to closed buds.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 04, 2023, 09:49:11 PM
Duane,
Yes, that small amount of Copper Soap should be safe, at it is under the minimum recommended rate.

However, you previously said that amount per quart, rather than per gallon, which would almost be the maximum labelled rate.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Calusa on April 06, 2023, 11:30:11 AM
Anyone know why this small mango would have fallen off the tree? Maha in the ground almost 3 years. Last week I saw some watery sap running down the fruit and this morning I found it on the ground. There is only a few small fruits on the tree at this time. Tree too young maybe?

(https://live.staticflickr.com/65535/52797214392_ab0b386dc4_z.jpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: TheVeggieProfessor on April 07, 2023, 01:02:57 PM
Hi all. This is on the new growth of my Glenn and Pickering. Any ideas?

(https://i.postimg.cc/DShYdcQ9/350959-B6-49-C9-4-C3-E-B49-F-B855-DB3-EBDAC.jpg) (https://postimg.cc/DShYdcQ9)

(https://i.postimg.cc/qtbbrHfr/4-D77-D1-F9-A363-474-F-8-B9-D-660-F50-CF5-C18.jpg) (https://postimg.cc/qtbbrHfr)

(https://i.postimg.cc/k6LTVNXh/674-B02-FC-BA54-49-E6-B4-BD-79183-D450415.jpg) (https://postimg.cc/k6LTVNXh)

(https://i.postimg.cc/R6WPVp9H/91-D7084-F-E414-490-F-8634-32-DB8-F9-D0-D58.jpg) (https://postimg.cc/R6WPVp9H)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: drymifolia on April 09, 2023, 10:34:34 AM
I just noticed that my greenhouse mango seedling -- which looks otherwise healthy -- has some suspicious looking white splotches on the still-green stem just above ground level. Is this powdery mildew or some kind of pathogen I should be concerned about?

(https://lh3.googleusercontent.com/pw/AMWts8CkMRQ-zCF_wqbc-flWj0CRUEtJ9XcRJV01StF38ViBXKpDMwEWE4zwUqa7TwiJoGYAjAqg83qCh9SNtuQTTrr1weKYkZcaxHjc2HfXThBYU9QV0XdXI06q9KHKogaoUkfTlZm5FmssA8PiuDRSUpVJJw=w700)

(https://lh3.googleusercontent.com/pw/AMWts8CPoGEWVCjMvR584r9TE0TKq79mYSd7cNikdomF7Un6qdhSLiWWrnxTdpqZGQI1E4UM4njQSDRh_jzd8_X8hrVExYshoN3ePbv7I5nhorl-NXjn47H1Bfm0pd4jrg1cJtuE7juTwTjpRnJxSsis-dGagQ=w700)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 10, 2023, 11:18:52 AM
Caloosa, probably
Someone, or the wind, partially twisted off the fruit.  Where the stem was half detached, sap flowed. 
Later, the stem deteriorated and was unable to hold.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 10, 2023, 11:41:42 AM
Veggie Professor,
Root inefficiency caused by dry, chilled soil, commonly causes episodic nutritional deficiencies of zinc, copper, calcium, sulfur, etc.
The small or misshapened leaves are very susceptible to infections.  I see mostly anthracnose--- grey-black --- and a few mango bacterial black spots--- coal-black.

Use mixed fertilizers with all the micronutrients, and use gypsum, and spray with copper and other micronutrients.  Avoid the 0-0-52 fad.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 10, 2023, 11:44:29 AM
drymifolia,
Hardening bark.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MJ88 on April 11, 2023, 01:16:27 AM
I just got this mango tree today. It's an alphonso mango and I'm concerned it was shipped to me already having some fungus or a disease. As you can see in the pictures the main stem has black all over it where it should be green and some of the leaves have brown spots. The reason it looks wet is because I just sprayed it with some fungicide, just a Dr. Earth organic fungicide, nothing to major or toxic, I don't wanna do that until I know I need to. Any advice would be great, I'm new to mangoes. Please let me know if you think it's a fungus, I hope not, I just got it, it shouldn't already have a disease or fungus that would totally suck.

(https://i.postimg.cc/jC4b7PBS/20230410-212401.jpg) (https://postimg.cc/jC4b7PBS)


(https://i.postimg.cc/xkM7SS21/20230410-212422.jpg) (https://postimg.cc/xkM7SS21)



(https://i.postimg.cc/cg3z0GGJ/20230410-212353.jpg) (https://postimg.cc/cg3z0GGJ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MJ88 on April 11, 2023, 01:22:10 AM
For some reason this picture didn't post. You can really see the black stuff I'm talking about in this picture. It doesn't look like it should be there. I don't think that's normal. I've seen lots of pictures and videos of mangoes and they usually don't have black stuff growing on the young green trunk/stem.


(https://i.postimg.cc/cg3z0GGJ/20230410-212353.jpg) (https://postimg.cc/cg3z0GGJ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on April 16, 2023, 09:01:52 PM
I am down to seven fruit on my seedling Coconut Cream. The one on the right has some pock marks and a couple black spots and maybe what looks like scab. The other six fruitlets are clean. Any idea what is affecting the one fruit? Should it be removed? Thanks!

(https://i.postimg.cc/3dS7t5QR/IMG-20230416-183037102-HDR-2.jpg) (https://postimg.cc/3dS7t5QR)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: TheVeggieProfessor on April 17, 2023, 04:55:21 PM
Veggie Professor,
Root inefficiency caused by dry, chilled soil, commonly causes episodic nutritional deficiencies of zinc, copper, calcium, sulfur, etc.
The small or misshapened leaves are very susceptible to infections.  I see mostly anthracnose--- grey-black --- and a few mango bacterial black spots--- coal-black.

Use mixed fertilizers with all the micronutrients, and use gypsum, and spray with copper and other micronutrients.  Avoid the 0-0-52 fad.

Thanks for your response Har. I'll get right on it!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MJ88 on April 18, 2023, 11:55:38 AM
I noticed when transplanting some of the little roots on the bottom kd the plant and some on the surface of the soil are real dark brown almost black, but they don't feel mushy and/or come off easily when I pull on them. They seem to be still in there pretty firm. But my leaves have looked a little yellow and curling. I'm wondering if it could be root rot, the pictures of my plants are a couple posts up. From what I'm reading black roots mean rot, but they don't smell and aren't mushy, they just look like dark little feeder roots. If anyone has any thoughts on this, I could really use a second opinion, I don't really wanna take it out and sterilize the roots with peroxide and replant and all that if I can avoid it, I just transplanted to a new pit yesterday. Someone please get back to me, it would be greatly appreciated.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 19, 2023, 02:46:07 PM
MJ88,
The black mold-like fungus on the outside of mango new growth is largely harmless.  And not related to root conditions.

The root condtion sounds normal.  Did you cut the circling roots?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 19, 2023, 02:49:41 PM
Fliptop,
Spray with a Copper product.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on April 20, 2023, 05:44:54 AM
Thank you, as always, Har!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on April 26, 2023, 09:26:42 PM
Dang, I have a lot of Mango problems..this little seedling Bailey's Marvel has what we think is gall . . . not too easy to see in this pic, but here it is to give a sense of size (it's maybe a foot and a half tall). See the grasshoppers on it?

(https://i.postimg.cc/F75Gn3HV/IMG-20230425-201405187-2.jpg) (https://postimg.cc/F75Gn3HV)

Here's a close up of the alleged gall. Is this something to worry about? If so, what should be done?

(https://i.postimg.cc/5Xp30rqs/IMG-20230426-201841099-2.jpg) (https://postimg.cc/5Xp30rqs)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MJ88 on April 27, 2023, 06:05:35 AM
Guanabana no I didn't cut any roots they weren't circling necessarily I just noticed that they looked real dark. But after seeing some videos where they showed roots on mango seedling I noticed the roots looked very dark not real bright white like vegetable roots would look and I came to the conclusion that I don't think it is root rot I think they just look different than other plants. Also tree roots usually do look a bit different than like tomato roots or chili pepper roots. Also if your saying that they sound fine as well than I'm not going to worry. I've seen quite a few vids on YouTube with you and your knowledge on mangoes seems to be endless. I wish I had someone like you close by to help me. I have a kesar, alphonso and manila and I've got them all pots as of now, I have clay soil and about 16 inches down its almost like just hitting rock.  I need to treat my soil more before I'm comfortable planting in ground, so I hope they do well in the pots! Thank you so much for replying. I'm sure I'll be posting again when I have more questions. Also, I'm glad to hear that black mold is nothing to worry about, I was very worried it looked so bad but I wiped it off with a damp paper towel and it's yet to return 😀
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on April 27, 2023, 11:18:10 AM
Guanabana no I didn't cut any roots they weren't circling necessarily I just noticed that they looked real dark. But after seeing some videos where they showed roots on mango seedling I noticed the roots looked very dark not real bright white like vegetable roots would look and I came to the conclusion that I don't think it is root rot I think they just look different than other plants. Also tree roots usually do look a bit different than like tomato roots or chili pepper roots. Also if your saying that they sound fine as well than I'm not going to worry. I've seen quite a few vids on YouTube with you and your knowledge on mangoes seems to be endless. I wish I had someone like you close by to help me. I have a kesar, alphonso and manila and I've got them all pots as of now, I have clay soil and about 16 inches down its almost like just hitting rock.  I need to treat my soil more before I'm comfortable planting in ground, so I hope they do well in the pots! Thank you so much for replying. I'm sure I'll be posting again when I have more questions. Also, I'm glad to hear that black mold is nothing to worry about, I was very worried it looked so bad but I wiped it off with a damp paper towel and it's yet to return 😀


All mango roots are dark, just the fresh growth root tips will be yellowish/white colored (turning a red-burgandy for a short span, then the dull dark brown/black).

Har (Guanabana) is indeed a wealth of knowledge, but he's also very busy through-out the year. The search tool on the forum (https://tropicalfruitforum.com/index.php?action=search) can help you find the answers to most questions in an instant. This forum has been up for years and very likely already has (several) posts with answers to any of your questions; just know you'll be risking falling down the rabbit's hole, it's easy to get sidetracked. I spent days reading countless posts on here when I first started my mango journey, often having to remind myself what question I was trying to answer before I let myself get completely lost in interesting posts.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on April 28, 2023, 12:13:07 PM
Fliptop,
That is vegetative Mango Malformation, caused by Fusarium fungus infection inside the wood and bark.

Cut off, cutting into the wood of the trunk.  Sanitize wound with hydrogen peroxide.  When that dries, spray wound with a Copper product, preferably as Copper Sulfate Pentahydrate.

Or cut off whole top of plant, a couple inches below the infection, and treat the same.

Sanitize clippers or blade very well afterwards.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fliptop on April 28, 2023, 02:01:32 PM
Thank you, Har! Scary sounding stuff. I completed the surgery as instructed, including cleaning pruners with alcohol. I put the infected part in an airtight bag and into the garbage it went.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MJ88 on May 01, 2023, 10:09:02 AM
I noticed my kesar mango tree has a little bit of crispy brown tips on 3 of the leaves and on leaf has a slightly discolored spots that looks much lighter than the rest of the leaf. I'm wondering if anyone has any thoughts on what this could be from. I just added some 5-5-2 doctor earth fruit tree fertilizer, its a dry fertilizer thats supposed to last 3 months, a couple of days ago, do you think it could be fertilizer burn? I mean it doesn't seem likely, but I don't know what to think. It doesn't look like a fungus, although with our weather lately it wouldn't surprise me.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: INaba on May 01, 2023, 11:16:26 PM
Har, i need your expertise please.
Is this sweet tart mango planted correct? Or need to be replanted deeper
This trunk is not usuall. Please advise. Thanks
(https://i.postimg.cc/ftp20Xct/20230421-183702.jpg) (https://postimg.cc/ftp20Xct)

(https://i.postimg.cc/v1DtLTHW/20230421-183746.jpg) (https://postimg.cc/v1DtLTHW)

(https://i.postimg.cc/2qJFHYVg/20230421-184024.jpg) (https://postimg.cc/2qJFHYVg)

(https://i.postimg.cc/tsBzxWyq/20230421-184037.jpg) (https://postimg.cc/tsBzxWyq)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MJ88 on May 03, 2023, 01:35:28 AM
My tree has since developed more crispy leaf tips and a couple brown spots on the leaves. I think it might be fertilizer burn. Does anyone have any thoughts on what it could be? I forgot to post pictures the other say. It wasn't letting me post them saying cleantalk error or something then saying I already posted it, which I didn't. So I hope it let's me post my pictures.

(https://i.postimg.cc/jWGG7PDy/20230502-222127.jpg) (https://postimg.cc/jWGG7PDy)







(https://i.postimg.cc/LgSwySBX/20230502-222134.jpg) (https://postimg.cc/LgSwySBX)

(https://i.postimg.cc/XZJV8fNh/20230502-222147.jpg) (https://postimg.cc/XZJV8fNh)


(https://i.postimg.cc/MfkMNPvX/20230502-222207.jpg) (https://postimg.cc/MfkMNPvX)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on May 03, 2023, 08:58:23 AM
Har, i need your expertise please.
Is this sweet tart mango planted correct? Or need to be replanted deeper
This trunk is not usuall. Please advise. Thanks
(https://i.postimg.cc/ftp20Xct/20230421-183702.jpg) (https://postimg.cc/ftp20Xct)

(https://i.postimg.cc/v1DtLTHW/20230421-183746.jpg) (https://postimg.cc/v1DtLTHW)

(https://i.postimg.cc/2qJFHYVg/20230421-184024.jpg) (https://postimg.cc/2qJFHYVg)

(https://i.postimg.cc/tsBzxWyq/20230421-184037.jpg) (https://postimg.cc/tsBzxWyq)
You don't want to bury below the collar, which appears to be just at/above soil level now. Har knows best, but I don't think planting deeper is advisable.
That is a funky rootstock; I'm surprised a nursery grafted to that, I would have culled that one.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 03, 2023, 05:12:41 PM
Yes, current depth is good, or add another 1/2 inch of soil, also good.  Dont cover any of that horizontal portion, as that is trunk.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 03, 2023, 05:24:39 PM
MJ88,
Burned tips can be from deficiency of Potassium, or from deficiency of Nickel in presence of urea, or from Powdery Mildew--- if white powder was present on those leaf-tip areas when the problem first occurred.

The burned areas in the middle of the leaves may be from tree frog pee, or from the end of spray that was no longer well mixed, from lack of agitation.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: INaba on May 03, 2023, 09:12:56 PM
Jake, Har thanks a lot for the advice and your expertise.
This sweet tart isn't from professional nursery. From someone like us.
And when I bought it was small and I didn't see what I see now.
But thanks, I stopped to worry about
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MJ88 on May 04, 2023, 02:37:21 AM
Thank you har. I live in southern california so it couldn't be tree frogs,I can't even remember the last time I saw a frog haha. Okay well, I just fertilized the other day for the first time on that plant so I guess I'll see if that makes any difference and if it does then I guess it would be the potassium that helped. If not, should I try finding a minor nutrients spray with nickel, or what would he a fix for lack or nickel in presence of urea?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MJ88 on May 04, 2023, 03:02:14 AM
Would a product like opulent nickel, a liquid nickel foliar spray, or prevegenics microgenics, micronutrients fertilizer with nickel included, be something that would work for nickel deficiency. The potassium I can easily correct with fertilizer if it's that. Also the leaves are slightly wavy on the edges of the kesar mango in question. Is that normal for a kesar? I know some mangoes have leaves that are slightly wavy, is this the case for kesar's?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 05, 2023, 07:04:15 PM
For Nickel and other traces, I just use Kelp extracts and micronutrients that contain them as "contaminants."

See Washington State's department of agriculture's special website that lists the "heavy metals" in ag products sold in that state.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: CarloGolfer on May 09, 2023, 04:06:39 PM
Started getting some leaf issues on my Pickering and my Kesar. Pickering has some fruit. Kesar has no fruit.  The new leaves look fine, but the older leaves aren't looking great. They're starting to get discolored and have dead spots.  See pictures...

Pickering

(https://i.postimg.cc/DmGwQpkY/20230509-155946.jpg) (https://postimg.cc/DmGwQpkY)


(https://i.postimg.cc/FYCvX0XL/20230509-155954.jpg) (https://postimg.cc/FYCvX0XL)


(https://i.postimg.cc/9RZH9SRd/20230509-160032.jpg) (https://postimg.cc/9RZH9SRd)

Kesar

(https://i.postimg.cc/Q9pvCTwS/20230509-160127.jpg) (https://postimg.cc/Q9pvCTwS)


(https://i.postimg.cc/xNnhzdSQ/20230509-160138.jpg) (https://postimg.cc/xNnhzdSQ)


(https://i.postimg.cc/F1vHZgrr/20230509-160146.jpg) (https://postimg.cc/F1vHZgrr)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hipasfolk on May 24, 2023, 03:17:48 PM
One or two of my relatively new small potted mangos are starting to get these torqued leaves. I've had them about a month and otherwise look fine. Is it some kind of deficiency I should address, watering issue, or perhaps just stress?

(https://i.postimg.cc/WhQpLxpg/20230521-125156.jpg) (https://postimg.cc/WhQpLxpg)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on May 27, 2023, 11:45:40 AM
CarlosGolfer,
Possibly Potassium deficiency on the older leaves.  Mite damage on the Kesar.

Hipasfolk,
I am not close to sure, but possibly that results from deficiency of soluble Silicon.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: 12Zodiac on May 27, 2023, 10:59:53 PM
Can some please tell me what’s happening to my seedling mango. Thank you.
(https://i.postimg.cc/rdFjHRr6/IMG-5376.jpg) (https://postimg.cc/rdFjHRr6)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Jaboticaba45 on June 13, 2023, 11:29:41 PM
Hello,
does anyone know what causes fruit split on mango?
I know lots of water does, but I don't water my trees. My NDM-4 has had fruit splitting left and right.
Is there a nutritional deficiency? I know that NDM is prone to splitting according to Tropical Acres Farms.
I'm considering top working it now. But the tree is so far along, if the splitting could be solved with some nutrients, I'm all for it.
Thank you!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Calusa on June 14, 2023, 07:18:45 PM
Until this morning I had a grand total of one Mature size Maha Chanock hanging on my tree. Found it on the ground with what looks like bird beak marks on one side. It was hard and totally pithy inside so I am not so sure it would have made it to ripeness.

Question - who bags their fruit on the tree, at what stage and does it do any good? I need this info for use next season. Thanks
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fruitnoob on June 14, 2023, 10:40:35 PM

Question - who bags their fruit on the tree, at what stage and does it do any good? I need this info for use next season. Thanks

I bagged my 4 mangoes (Maha) when they were the size of a baseball. So far so good.
My guavas did not survive the squirrels, even in bag. The squirrels were not smart or patient enough to remove the fruits from the bag, though.
I noticed that the birds only ate my ripe Barbados cherries, so I guess you can bag the fruits when they are about to ripen.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on June 26, 2023, 10:18:37 PM
Mineral deficiencies increase susceptibility to splitting, not enough Boron.  Be very careful with dosing.  Better to just make sure that any mixed fertilizers used contain all micronutrients.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: mattyboydesigns on June 27, 2023, 09:57:38 AM
Some of my Sweet tarts have these sunken black spots, this one being the worst. What am I working with here?
(https://i.postimg.cc/vc6WkCJb/IMG-20230626-143800695.jpg) (https://postimg.cc/vc6WkCJb)

(https://i.postimg.cc/7bh1M5XC/IMG-20230626-143829153.jpg) (https://postimg.cc/7bh1M5XC)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MJ88 on July 01, 2023, 11:01:02 PM
My manila mango was looking real crappy and I thought it was maybe dying but when it finally warmed up it started getting new growth but the new leaves are coming in rather stunted and malformed. I have no idea what it could be. My other mangoes new growth looks good but this one does not. It's had steady new growth they are just small and malformed and like warped or bubbled or they only have like half of the leaf.
(https://i.postimg.cc/TL8Y6Jm3/20230701-194722.jpg) (https://postimg.cc/TL8Y6Jm3)

(https://i.postimg.cc/9rNDkTxr/20230701-194752.jpg) (https://postimg.cc/9rNDkTxr)

(https://i.postimg.cc/5Y30SFY9/20230701-194801.jpg) (https://postimg.cc/5Y30SFY9)

(https://i.postimg.cc/yDZ8rGgb/20230701-194744.jpg) (https://postimg.cc/yDZ8rGgb)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MJ88 on July 03, 2023, 09:52:57 AM
I also noticed that my other mango is having some leaves that aren't shaped right. Now I'm getting concerned. I feel like I need Har to check these out and give me an answer I trust. Anyone with any advice would be appreciated but we all know what a fount of knowledge he is. Do these look okay or should I be worried. I know what they should look like and I don't think this is it.
(https://i.postimg.cc/6T6cGCkm/20230703-064758.jpg) (https://postimg.cc/6T6cGCkm)

(https://i.postimg.cc/8jjbZNPd/20230703-064815.jpg) (https://postimg.cc/8jjbZNPd)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MJ88 on July 06, 2023, 02:30:15 PM
Here's some newer pictures from today. They just keep coming in kinda deformed. The plant seems healthy other than that.
(https://i.postimg.cc/LgD2h4bt/20230706-112554.jpg) (https://postimg.cc/LgD2h4bt)

(https://i.postimg.cc/8jyf0Tzf/20230706-112559.jpg) (https://postimg.cc/8jyf0Tzf)

(https://i.postimg.cc/F1NfFYfJ/20230706-112626.jpg) (https://postimg.cc/F1NfFYfJ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 08, 2023, 01:11:11 PM
Mattyboy,
I don't know.

I have heard, but maybe it is just an urban legend, that a point like that on a fruit can balance a large drop of water or spray, well after the rest of the fruit has dried off.  And that the drop can lense (concentrate) sunlight onto the fruit skin, causing a burn.  Seems a long shot to me.

It is likely that spraying with soluble Silicon and micro-nutrients, including Copper, will increase the hardiness against sunburn and fungi.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on July 08, 2023, 02:07:22 PM
MJ88,

July 3-6 photos.
Micro-nutrient deficiencies, especially not enough Zinc and Copper.

July 1 photos,
Damage by mango scab fungus on tender growth,
or damage by mirids or aphids,
or deficiencies of nutrients such as Boron and Zinc.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MJ88 on July 09, 2023, 11:43:38 AM
Thank you har. You're a godsend to all of us mango novices. I had a feeling that it was a micronutrient deficiency just cause it doesn't look diseased, in fact it looks healthy other than that. I have some southern ag micronutrients spray for citrus and I have read that it works great for mangoes as well, so i'm going to try that out and hopefully I will have leaves that look normal soon and then they should be pretty healthy overall. The only one that doesn't look as good is the one from the July 1st pics. The 3-6 photos are from another plant and I have another one that is doing the same thing. I think its probably the fertilizer I have doesn't have the right concentrations of micronutrients
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Julian R on July 17, 2023, 02:10:28 PM
Couple of my mangoes are having this issue pushing out new growth this year.  My first thought was burn from fertilizer as I did put some down at the beginning of the year - probably too much.  So I raked a lot of that away a month or so ago and watered heavily and we've been getting good rains as well.  This seemed to help a bit but not sure if that was a coincidence or if it just needs more time to recover. The orange sherbet is getting some slight burning on the tips and have a couple aphids but my other tree (I can't remember the variety!!!) is having it much more severely.  Hoping to get some opinions on the pics of the worse off tree below:

(https://i.postimg.cc/B8VP10f7/PXL-20230717-175919654.jpg) (https://postimg.cc/B8VP10f7)

(https://i.postimg.cc/3yRDRwVD/PXL-20230717-175924249.jpg) (https://postimg.cc/3yRDRwVD)

(https://i.postimg.cc/gx4ZmhSW/PXL-20230717-175933327.jpg) (https://postimg.cc/gx4ZmhSW)

(https://i.postimg.cc/mtY9pJ7h/PXL-20230717-175940093.jpg) (https://postimg.cc/mtY9pJ7h)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Julian R on July 19, 2023, 03:24:05 PM
Having some additional thoughts.  With the intense heat from the sun this summer I wonder if it could possibly be damage from that?  This one is getting full sun all day but I would expect mangoes to be particularly happy about that but perhaps it is really just that intense this year.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: MJ88 on August 04, 2023, 10:08:26 AM
Any thoughts on this? This new growth is very anemic looking and has some little brown spots all over it. Now, it is several feet away from some potato plants which have recently been very damaged by a spider mite infestation. I haven't noticed it on anything, but theblittle brown spots made me think maybe it's marks from the spider mites and the anemic appearance is from them sucking out the juices in the leaf? Maybe? I don't know, which is why I'm on here asking you people. Hopefully Har will get on here and grace me with his knowledge of all things mango, haha. I'm concerned though cause this one has been very healthy up until now and it's my only kesar mango and I'm very excited for it.
(https://i.postimg.cc/VSW2rqmm/20230804-070158.jpg) (https://postimg.cc/VSW2rqmm)

(https://i.postimg.cc/236gyLJN/20230804-070209.jpg) (https://postimg.cc/236gyLJN)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: INaba on August 14, 2023, 10:48:55 PM
Har, please I would need your advice as well.
Is this new growth on lz mango looks normal or need copper or
other fungicide spray? Thanks
(https://i.postimg.cc/4HgxWTDp/20230813-111715.jpg) (https://postimg.cc/4HgxWTDp)

(https://i.postimg.cc/fSfTFrsp/20230813-112011.jpg) (https://postimg.cc/fSfTFrsp)



(https://i.postimg.cc/mtTrMBNs/20230813-111759.jpg) (https://postimg.cc/mtTrMBNs)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: INaba on August 15, 2023, 07:53:36 AM
Also what deficiency the leaves show,  thanks.

(https://i.postimg.cc/w7xdS13C/20230815-074531.jpg) (https://postimg.cc/w7xdS13C)

(https://i.postimg.cc/TyNyWzFw/20230815-073911.jpg) (https://postimg.cc/TyNyWzFw)

(https://i.postimg.cc/t14ZJqrw/20230815-073943.jpg) (https://postimg.cc/t14ZJqrw)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: love_Tropic on August 17, 2023, 11:41:19 PM
Can anyone explain what’s happening with the flush? It’s Keitt tree in 15 gal.

(https://i.postimg.cc/vg8D9FW8/IMG-5333.jpg) (https://postimg.cc/vg8D9FW8)

(https://i.postimg.cc/k65XGNmB/IMG-5334.jpg) (https://postimg.cc/k65XGNmB)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DesertTropicals on August 31, 2023, 07:46:34 PM
Message removed
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DesertTropicals on August 31, 2023, 07:47:36 PM
Hi All, I'm new to the forum and I live in the Phoenix, AZ area (9b).  I got a grafted M-4 mango tree in early Aug-2023 and it has not done well at all.  Temps have been >110 degrees F most of the month.  I started off watering it 2x a day per instructions for the first week.  Added sulfur a day or 2 after I got it home.  I added some slow release fertilizer a few weeks after getting it.  I've since backed off on watering to once per day the past 2 weeks.  It's placed against an east facing wall under 90% shade cloth and gets no more than 2 hours of direct sunlight in the morning.

Below are pictures of the steady decline.  Notice the leaves started browning on the edges.  It's always tough for me to determine if it's due to under/over watering, alkaline soil, nutrient deficiency, heat.  Please help me determine if this can be saved and a diagnosis for what I need to do.  Should I try repotting and checking for root rot?

Aug 7, 2023:

(https://i.postimg.cc/yDz3bFw2/20230807-195915.jpg) (https://postimg.cc/yDz3bFw2)



Aug 10, 2023:

(https://i.postimg.cc/xJW1bQQB/20230810-191110.jpg) (https://postimg.cc/xJW1bQQB)


Aug 12, 2023:

(https://i.postimg.cc/Y40rn0qJ/20230812-105511.jpg) (https://postimg.cc/Y40rn0qJ)


Aug 15, 2023:

(https://i.postimg.cc/WqGTFJXJ/20230815-130224.jpg) (https://postimg.cc/WqGTFJXJ)


Aug 17, 2023.  Big leaves dropped within a few days after some windy days.
(https://i.postimg.cc/z3KJP98X/20230817-181356.jpg) (https://postimg.cc/z3KJP98X)


Aug 30, 2023:  New growth developing poorly:

(https://i.postimg.cc/3y0M0vwJ/20230830-112236.jpg) (https://postimg.cc/3y0M0vwJ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on September 01, 2023, 08:54:19 AM
DesertTropicals, that looks like salt stress. Perhaps you have soft water or maybe it got too much fertilizer?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DesertTropicals on September 01, 2023, 03:28:11 PM
DesertTropicals, that looks like salt stress. Perhaps you have soft water or maybe it got too much fertilizer?

Thanks Jeff, I have been using an outdoor faucet and letting the water sit in an open container overnight to help aerate and let chlorine dissipate.  That tap is does not come from my water softener but our water is known to be hard.  I've captured some rainwater last night and will use that.  I used slow release Osmocote and worked that in the soil.  I just repotted this yesterday and added some mykos for the roots and sprinkled a few teaspoons of sulfur to help with pH.  Hopefully this will help but I don't have much hope for this plant.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Cookie Monster on September 01, 2023, 05:07:25 PM
I don't think regular tap water would cause that. I would start to wonder if perhaps soft water is somehow making it to that tap. At this stage, you don't want to give it any form of fertilizer and would want to flush the rootball with water known to contain no salts. It looks beyond recovery though. The time to save would have been before that last flush. But I guess it's worth a shot?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DesertTropicals on September 01, 2023, 08:15:50 PM
Thanks Jeff, I'll double check my outside hose bib to see if it's drawing from my water softener.  Didn't even think about that.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dm on September 14, 2023, 09:34:08 PM
Hello,

Anyone know what is happening with my Pram Kai Mea (PKM) and Coconut Cream (CC)?
PKM has had blackened leaves for a while, but it did not seem to bother it, but now new growth is dying on it and also the CC.
I have not been fertilizing for over a year, so it is nothing I'm actively doing to it.  Other varieties close by do not have this problem.

Also, the CC has a split trunk.  Is it doomed or can it recover and heal strong as it grows?
I don't think the split has anything to do with the new growth dying since it is also happening to the PKM.

Thanks





(https://i.postimg.cc/cv0rG9P7/20230914-114850.jpg) (https://postimg.cc/cv0rG9P7)

(https://i.postimg.cc/0znrkGqT/20230914-114917.jpg) (https://postimg.cc/0znrkGqT)

(https://i.postimg.cc/7CLhfCHf/20230914-114941.jpg) (https://postimg.cc/7CLhfCHf)

(https://i.postimg.cc/t1mTPXJD/20230914-114957.jpg) (https://postimg.cc/t1mTPXJD)

(https://i.postimg.cc/dkbVH48y/20230914-115010.jpg) (https://postimg.cc/dkbVH48y)

(https://i.postimg.cc/hzzG1H7n/20230914-115020.jpg) (https://postimg.cc/hzzG1H7n)


(https://i.postimg.cc/FftmQ7YM/20230902-103112.jpg) (https://postimg.cc/FftmQ7YM)

(https://i.postimg.cc/67dK6tRy/20230902-103121.jpg) (https://postimg.cc/67dK6tRy)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hipasfolk on October 02, 2023, 11:59:16 AM
This headache of an orange sherbet had really pale leaves so I treated with micronutrients and chelated iron but now the new growth looks worse than ever. Any advice before I try something else that makes it worse?  :-\


(https://i.postimg.cc/672f70Mj/20231002-112316.jpg) (https://postimg.cc/672f70Mj)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hipasfolk on October 07, 2023, 10:48:43 AM
Does this look like the start of vegetative malformation on this small Fruit Punch Mango? I can't find any references of what it looks like before it's progressed to an obvious point.

(https://i.postimg.cc/phGbHG3t/20231007-103341.jpg) (https://postimg.cc/phGbHG3t)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on October 09, 2023, 02:18:35 PM
Peach Cobbler.  Branch wet from peroxide mix.  Most of tree looks clean with mild anthracnose.
3 parts water 1 part regular peroxide did nothing, no fizz or steam.  Black rubs off with effort. 
I have bifenthrin & copper, used neither yet.
Thank you,
Ed


(https://i.postimg.cc/SXQT47Sp/IMG-0778.jpg) (https://postimg.cc/SXQT47Sp)

(https://i.postimg.cc/KkR0kG3q/IMG-4284.jpg) (https://postimg.cc/KkR0kG3q)

(https://i.postimg.cc/v4hh0gW2/IMG-4286.jpg) (https://postimg.cc/v4hh0gW2)

(https://i.postimg.cc/f3bKpzCz/IMG-4290.jpg) (https://postimg.cc/f3bKpzCz)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DesertTropicals on October 20, 2023, 02:04:27 AM
I bought these 3 lemon meringue seedlings in early Aug and potted them about 2 weeks after I bought them.  They have been in these pots for over 6 weeks and the leaves have been wilting for the past week or so.  The weather here in Phoenix has dropped but we are still having 100 degree highs and I have not changed anything.  I wanted to see if anyone knows why the leaves would be wilting like this as they look healthy otherwise.  The leaves are crisping up on one of them.  Thanks in advance.
(https://i.postimg.cc/GHxPzPdL/20231018-113150-resize.jpg) (https://postimg.cc/GHxPzPdL)

(https://i.postimg.cc/PPjzmVGV/20231018-113213-resize.jpg) (https://postimg.cc/PPjzmVGV)

(https://i.postimg.cc/z3WFHZQR/20231018-113230-resize.jpg) (https://postimg.cc/z3WFHZQR)

(https://i.postimg.cc/fS47qBVL/20231018-113240-resize.jpg) (https://postimg.cc/fS47qBVL)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fruitnut1944 on October 20, 2023, 10:03:15 AM
The usual reason for wilting in those circumstances is they're too dry. It's possible they're too wet and the roots have rotted.

Does the media seem wet, dry, or moist?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DesertTropicals on October 20, 2023, 10:47:56 AM
The usual reason for wilting in those circumstances is they're too dry. It's possible they're too wet and the roots have rotted.

Does the media seem wet, dry, or moist?
The media is moist.  For the media I use a mix of approximately 50% peat moss, 25% pumice, 25% crushed granite by volume.  I carefully pulled out the worst looking one and it does look like root rot.  Any suggestions on saving the other 2 or are they possibly too far gone?  Thank you for responding.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: fruitnut1944 on October 20, 2023, 11:12:58 AM
My experience is that mango roots on small plants always look bad. They don't have many roots compared to most plants that size and what they do have look bad. Repotting into a better draining mix might help. And keep them in the shade until they look better. I've had them stay wilted for a long time and still recover. If the leaves fall off they're toast. Until then you have a chance.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DesertTropicals on October 20, 2023, 11:40:05 AM
My experience is that mango roots on small plants always look bad. They don't have many roots compared to most plants that size and what they do have look bad. Repotting into a better draining mix might help. And keep them in the shade until they look better. I've had them stay wilted for a long time and still recover. If the leaves fall off they're toast. Until then you have a chance.
Will do, thank you!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: JakeFruit on October 20, 2023, 12:14:13 PM
I bought these 3 lemon meringue seedlings in early Aug and potted them about 2 weeks after I bought them.  They have been in these pots for over 6 weeks and the leaves have been wilting for the past week or so.  The weather here in Phoenix has dropped but we are still having 100 degree highs and I have not changed anything.  I wanted to see if anyone knows why the leaves would be wilting like this as they look healthy otherwise.  The leaves are crisping up on one of them.  Thanks in advance.
(https://i.postimg.cc/GHxPzPdL/20231018-113150-resize.jpg) (https://postimg.cc/GHxPzPdL)

(https://i.postimg.cc/PPjzmVGV/20231018-113213-resize.jpg) (https://postimg.cc/PPjzmVGV)

(https://i.postimg.cc/z3WFHZQR/20231018-113230-resize.jpg) (https://postimg.cc/z3WFHZQR)

(https://i.postimg.cc/fS47qBVL/20231018-113240-resize.jpg) (https://postimg.cc/fS47qBVL)
Your soil-mix looks like almost entirely peat moss or something similar, way too much moisture-retention for mango roots. They like quick-draining, sandy soil; wet roots for long leads to root rot. I'm guessing the roots are already wasted and they'll all die no matter what you do now; it's going to stress them to repot and they are already super-stressed. Might as well try though, get a bag of cactus soil or other quick-draining, dry medium. I'd remove all but the single healthiest leaf from each, and cut that single leaf in half (or more), width-wise. Those leaves are doing more harm than good, at this point, but you don't want the plant without the ability to resume photosynthesis if it does recover.


I killed many, many seedlings when I started; getting the soil right is the biggest challenge and mango seedlings will fool you. They'll look healthy and great for quite awhile in just about any potting soil mix, pushing growth and pulling all their needs from the seed. When the seed energy runs out and they have to rely on their roots, they can die in what seems like days.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DesertTropicals on October 20, 2023, 04:32:25 PM
I bought these 3 lemon meringue seedlings in early Aug and potted them about 2 weeks after I bought them.  They have been in these pots for over 6 weeks and the leaves have been wilting for the past week or so.  The weather here in Phoenix has dropped but we are still having 100 degree highs and I have not changed anything.  I wanted to see if anyone knows why the leaves would be wilting like this as they look healthy otherwise.  The leaves are crisping up on one of them.  Thanks in advance.

Your soil-mix looks like almost entirely peat moss or something similar, way too much moisture-retention for mango roots. They like quick-draining, sandy soil; wet roots for long leads to root rot. I'm guessing the roots are already wasted and they'll all die no matter what you do now; it's going to stress them to repot and they are already super-stressed. Might as well try though, get a bag of cactus soil or other quick-draining, dry medium. I'd remove all but the single healthiest leaf from each, and cut that single leaf in half (or more), width-wise. Those leaves are doing more harm than good, at this point, but you don't want the plant without the ability to resume photosynthesis if it does recover.


I killed many, many seedlings when I started; getting the soil right is the biggest challenge and mango seedlings will fool you. They'll look healthy and great for quite awhile in just about any potting soil mix, pushing growth and pulling all their needs from the seed. When the seed energy runs out and they have to rely on their roots, they can die in what seems like days.

Thanks JakeFruit.  Appreciate the tips and agree that mango seedlings can fool you.  I've become an expert on how not to grow seedlings.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: love_Tropic on November 25, 2023, 07:00:52 PM
Any idea what’s going on with Kent seedling, it’s around 1 year old. One of the branches just died, so checking the root and found some thing like a white fungus covered over the roots… help please…
Will hydrogen peroxide work?


(https://i.postimg.cc/PC1McfYs/IMG-5627.jpg) (https://postimg.cc/PC1McfYs)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Calusa on December 11, 2023, 08:58:19 AM
I have some scale and sooty mold on my Glen mango. Is neem oil suitable to kill the scale, or is there something more effective?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Staradventure on December 22, 2023, 04:15:03 PM
Good afternoon. Hope all is good. Was told I might be able to get a little help with a young mango I have. It’s a grafted plant I put in the ground around April this year. I immediately topped it to promote some scaffolding branches to grow. The pictures are the only growth it has put on since then. The original leaves are still present however they are slowly drying out. The leaves and lack of new growth arent a supper concern as much as the crazy growth pattern on top.  I haven’t had any real success in identifying the problem and was hoping for some help in that and what I can do to help the tree thrive instead of simply survive.
(https://i.postimg.cc/pp3ZRQx9/IMG-3134.jpg) (https://postimg.cc/pp3ZRQx9)

(https://i.postimg.cc/8sK4nQ0m/IMG-3135.jpg) (https://postimg.cc/8sK4nQ0m)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: simon_grow on December 22, 2023, 07:08:08 PM
Any idea what’s going on with Kent seedling, it’s around 1 year old. One of the branches just died, so checking the root and found some thing like a white fungus covered over the roots… help please…
Will hydrogen peroxide work?


(https://i.postimg.cc/PC1McfYs/IMG-5627.jpg) (https://postimg.cc/PC1McfYs)

I’m not exactly sure what the white stuff is but it could be actinomycetes. Branches on younger mango trees can die back due to infection from open wounds that allow pathogens to enter. In marginal mango areas such as cooler parts of SoCal, branches frequently die back around winter.

The roots look relatively healthy to me. Since you exposed the roots, I would expect some transplant shock so be gentle with you tree by keeping it out of direct sunlight while it recovers.

Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: simon_grow on December 22, 2023, 07:15:22 PM
I have some scale and sooty mold on my Glen mango. Is neem oil suitable to kill the scale, or is there something more effective?

Neem oil will work but it will take many applications which will need to be re applied if it rains. The neem oil can also burn your plants if it’s hot and sunny. Try to rid your tree of ants. You can use tanglefoot to prevent ants from going up your tree and farming the scale.

Once you get rid of the scale. You can use something like Azera combined with a spreader/extender so that the organic insecticide will last longer in rainy conditions. You can also use horticultural oil to suffocate the scale.

Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: simon_grow on December 22, 2023, 07:31:16 PM
Good afternoon. Hope all is good. Was told I might be able to get a little help with a young mango I have. It’s a grafted plant I put in the ground around April this year. I immediately topped it to promote some scaffolding branches to grow. The pictures are the only growth it has put on since then. The original leaves are still present however they are slowly drying out. The leaves and lack of new growth arent a supper concern as much as the crazy growth pattern on top.  I haven’t had any real success in identifying the problem and was hoping for some help in that and what I can do to help the tree thrive instead of simply survive.
(https://i.postimg.cc/pp3ZRQx9/IMG-3134.jpg) (https://postimg.cc/pp3ZRQx9)

(https://i.postimg.cc/8sK4nQ0m/IMG-3135.jpg) (https://postimg.cc/8sK4nQ0m)

At a quick glance, it may look like Mango malformation disease but I see you are in San Diego and I’ve seen this on multiple occasions and it usually coincides with the colder weather. Your tree was probably preparing for a push of growth and fungus or the cold weather started disrupting the hormone signals in your tree. It could still be MMD but it’s difficult to know for sure without sending in samples into the lab for testing.

Either way, you have a grafted tree and your tree will attempt to bloom every winter from here on out unless you keep it warm in Winter. This is why I recommend people plant seedlings and push vegetative growth as much as possible in the early years and graft only once the tree is large enough to safely hold fruit.

Simon
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Calusa on December 27, 2023, 08:22:41 PM
I have some scale and sooty mold on my Glen mango. Is neem oil suitable to kill the scale, or is there something more effective?

Neem oil will work but it will take many applications which will need to be re applied if it rains. The neem oil can also burn your plants if it’s hot and sunny. Try to rid your tree of ants. You can use tanglefoot to prevent ants from going up your tree and farming the scale.

Once you get rid of the scale. You can use something like Azera combined with a spreader/extender so that the organic insecticide will last longer in rainy conditions. You can also use horticultural oil to suffocate the scale.

Simon

Thanks. I didn't see your post until after I got some Neem Oil Extract and used it this afternoon. It contains INSECTICIDE/FUNGICIDE/MITICIDE all in one. The reviews for using it to kill scale were positive so maybe it will do the job.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hewholooks on January 03, 2024, 09:22:08 AM
I would like to have some opinions regarding lawn sprinklers and fungus problems in mangos.  I have a Glenn, maybe 2-3 years old, in the ground since early last summer. It was flushing beautifully a couple times last summer till the end of the summer and the last flush got fungus on the leaves.  The wood actually got affected and I had to prune back. My sprinklers are all rotors and only water twice weekly.  They water in the morning at sunrise, so you'd think that the water would dry off.  The tree is out in the open in full sun.  I have now adjusted the rotors to miss the tree as much as possible, hoping for a better year when flushes start. I am in Bonita Springs, FL.

So - I have been told by a neighbor that maybe I am never gonna get a good mango growth in a lawn that is irrigated and hits the foliage.  Any opinions or advice would be very welcome.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Greater Good on January 03, 2024, 11:40:46 AM
Did you get any brackish water intrusion during the hurricane?
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: DocTropical on January 03, 2024, 12:59:52 PM
Any idea what’s going on here? New growth on a 8 ft sien ta lone mango in the ground. Zone 9B, north Orlando.

A prior growth flush at the end of last summer also looked pale with brown splotches on it…
(https://i.postimg.cc/Lqc2C2CG/IMG-1742.jpg) (https://postimg.cc/Lqc2C2CG)

(https://i.postimg.cc/qh20WSWq/IMG-1743.jpg) (https://postimg.cc/qh20WSWq)

(https://i.postimg.cc/xkJ93cRK/IMG-1744.jpg) (https://postimg.cc/xkJ93cRK)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 18, 2024, 11:13:21 PM
INaba,

Your mangos have Zinc deficiency.

Use a micronutrient mix that has at least 0.25% Zinc.  1% would be better.
Follow instructions on the product label.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 18, 2024, 11:28:15 PM
DM and Hipasfolk,
Spray with a micronutrient mix.  Be sure it contains at least 0.25% Zinc.
If that mix doesn't contain Copper, spray a Copper fungicide.  Follow label requirements.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 18, 2024, 11:30:29 PM
Eddie F,

Mango scale.  Spray with Spray Oil.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 18, 2024, 11:42:32 PM
Love_Tropic,

The base of the trunk appears to have been weed-whacked months ago.
The roots then starved, and they are now being eaten by fungus.

Throw out.  Try again.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Guanabanus on January 19, 2024, 12:01:12 AM
StarAdventure,

May be a nutritional issue, or micromites in the buds, or Fusarium fungus in the twig veins.

I would cut off that whole tip at the green tape, and throw pruned off part in the city trash.
Then spray the fresh wound with hydrogen peroxide, and the whole plant with a Copper fungicide
and a micronutrient mix and seaweed extract.
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: love_Tropic on January 19, 2024, 11:28:20 PM
Love_Tropic,

The base of the trunk appears to have been weed-whacked months ago.
The roots then starved, and they are now being eaten by fungus.

Throw out.  Try again.

Thanks Har! 🙏

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: dm on January 20, 2024, 11:16:16 AM
DM and Hipasfolk,
Spray with a micronutrient mix.  Be sure it contains at least 0.25% Zinc.
If that mix doesn't contain Copper, spray a Copper fungicide.  Follow label requirements.

Thank you much!
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: hewholooks on January 24, 2024, 04:54:32 PM
Got this new Duncan by mail today - shipped overnight from the Miami area to Bonita Springs. I think it looks healthy, but I can't figure out why a few of the lower/older leaves are discolored.  I was thinking cold damage, but not in a plant that never left south Florida in it's whole life.

Bacterial?

I don't see any bugs and nothing rubs off. It doesn't seem to be on the front or back surface, but is a discoloration of the thickness of the leaf - I think.

Any ideas would be appreciated?


(https://i.postimg.cc/0M9nfYKy/20240124-164452.jpg) (https://postimg.cc/0M9nfYKy)

(https://i.postimg.cc/2bfWFrJd/20240124-165743.jpg) (https://postimg.cc/2bfWFrJd)

(https://i.postimg.cc/jn5XVRXV/20240124-164528.jpg) (https://postimg.cc/jn5XVRXV)

(https://i.postimg.cc/r0gJYD5C/20240124-164542.jpg) (https://postimg.cc/r0gJYD5C)

(https://i.postimg.cc/3yX9mSRq/20240124-164552.jpg) (https://postimg.cc/3yX9mSRq)

(https://i.postimg.cc/ZCQfSv2w/20240124-164556.jpg) (https://postimg.cc/ZCQfSv2w)

Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: EddieF on January 26, 2024, 08:39:32 PM
Har, thank you sir.  Sprayed it and others with mineral oil after watching one of your great TT vids about Scale.  Also educated me why i got black stuff all over same tree and why mostly lower leaves & branches.

This is effect of mineral oil (middle range of oz/gal).  Repeated few times, used water weeks later & psi washed gently, garden hose, best i could without blowing leaves off heh.  No harm, used my head.
Photos last month, since then it came back some but flowers are starting fingers crossed.


(https://i.postimg.cc/5XvXnV1M/3-B2-B937-C-3-D64-40-B0-9-BD8-1-A0-B3828-AFD7.jpg) (https://postimg.cc/5XvXnV1M)

(https://i.postimg.cc/2bHyVjdn/91-D23-AFD-6426-4093-A38-D-E35425-F4-C518.jpg) (https://postimg.cc/2bHyVjdn)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Greater Good on February 06, 2024, 11:06:04 AM
Got this new Duncan by mail today - shipped overnight from the Miami area to Bonita Springs. I think it looks healthy, but I can't figure out why a few of the lower/older leaves are discolored.  I was thinking cold damage, but not in a plant that never left south Florida in it's whole life.

Bacterial?

I don't see any bugs and nothing rubs off. It doesn't seem to be on the front or back surface, but is a discoloration of the thickness of the leaf - I think.

Any ideas would be appreciated?


(https://i.postimg.cc/0M9nfYKy/20240124-164452.jpg) (https://postimg.cc/0M9nfYKy)

(https://i.postimg.cc/2bfWFrJd/20240124-165743.jpg) (https://postimg.cc/2bfWFrJd)

(https://i.postimg.cc/jn5XVRXV/20240124-164528.jpg) (https://postimg.cc/jn5XVRXV)

(https://i.postimg.cc/r0gJYD5C/20240124-164542.jpg) (https://postimg.cc/r0gJYD5C)

(https://i.postimg.cc/3yX9mSRq/20240124-164552.jpg) (https://postimg.cc/3yX9mSRq)

(https://i.postimg.cc/ZCQfSv2w/20240124-164556.jpg) (https://postimg.cc/ZCQfSv2w)
(https://i.postimg.cc/TyYXZg6z/mango-cold-illustration-character-vector-193274-23052.jpg) (https://postimg.cc/TyYXZg6z)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: Amel on February 23, 2024, 08:12:23 AM
I got this Mango seedling from someone about 6 months ago in a 10 gallon pot, which I then planted in my backyard.

After a couple of months it started getting these spots on leaves...a month ago I put it back into a pot but it has not stopped, the browning continues


(https://i.postimg.cc/Mf8tTpKG/1.jpg) (https://postimg.cc/Mf8tTpKG)



(https://i.postimg.cc/14pJdwJV/2.jpg) (https://postimg.cc/14pJdwJV)

(https://i.postimg.cc/QHh0ZCy4/3.jpg) (https://postimg.cc/QHh0ZCy4)

(https://i.postimg.cc/4HbPhRmQ/4.jpg) (https://postimg.cc/4HbPhRmQ)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: 10bMoonie on March 04, 2024, 08:50:21 PM
Hey Folks! Recently purchased this mango tree and am a little worried about it. Brown spots on leaves, browning occurring at the base of leaves, new growth seems stunted, and it has dropped some green leaves. Fortunately it does have some leaves that seem to be in great shape, I included a picture of those leaves as well. This is my first mango tree and I’m trying to take good care of it  :)

The guy I bought it from did say he recently put it in a larger pot with more soil, maybe it’s not liking the soil? Nutrient burn? Disease? Or could this be damage from cold and wind? It has been cold down here in Southern California recently, but nothing too extreme. I believe the coldest it got at night was about 45, but closer to 50 degrees on average.

Unfortunately I do not have any information on the variety of mango or root stock.

Any help is appreciated. How can I treat this poor guy?


(https://i.postimg.cc/Yvb08zB4/367-BA939-4813-43-F1-92-E1-4230156-C0-BE6.jpg) (https://postimg.cc/Yvb08zB4)

(https://i.postimg.cc/sBxXLG3T/9095-EAB3-CADD-4-D3-B-AB2-B-7-AFD8-E7-DB250.jpg) (https://postimg.cc/sBxXLG3T)

(https://i.postimg.cc/KkgYGXkL/9364-C68-E-A708-48-F3-AE60-059-F651-B280-E.jpg) (https://postimg.cc/KkgYGXkL)

(https://i.postimg.cc/HjXLFgC1/B1-DA9-E8-A-FE17-47-B2-B314-12744-FD0-C00-C.jpg) (https://postimg.cc/HjXLFgC1)

(https://i.postimg.cc/Pvs5N6Y7/CA241-B8-D-41-F3-4160-AA92-6-BF34-B5-B0-FE7.jpg) (https://postimg.cc/Pvs5N6Y7)

(https://i.postimg.cc/NK49Swmj/CABE5-EE9-D8-D3-40-DC-9-E60-01-A382-B61-C60.jpg) (https://postimg.cc/NK49Swmj)

(https://i.postimg.cc/Yh7SHspG/DF764871-7-A9-A-4-BFF-AF72-78599-DB40775.jpg) (https://postimg.cc/Yh7SHspG)
Title: Re: Mango Pests, Diseases, and Nutritional Problems
Post by: 10bMoonie on March 11, 2024, 08:05:07 PM
From my research I’ve concluded that this is a pretty severe case of anthracnose. Now.. from my research I’ve seen mixed reviews some saying to get rid of the tree, others saying it’s easily controllable. My plan right now is to treat the tree with a copper fungicide and trim back the severely affected new growth which is dead/dying anyway.

Could anyone please chime in and confirm my diagnosis and advise if my treatment method is correct?

Thank you