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Author Topic: Mango Pests, Diseases, and Nutritional Problems  (Read 311283 times)

Guanabanus

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1775 on: September 20, 2020, 07:29:06 PM »
Water more.
Har

JakeFruit

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1776 on: September 20, 2020, 07:55:37 PM »
Easy enough, it's raining as I type right now. Thanks Har.

Mango Stein

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1777 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.


There's no such thing as "ultra tropical"

Guanabanus

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1778 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.
Har

skhan

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1779 on: September 26, 2020, 08:47:15 AM »








I saw this on a few of my father's trees.
Any ideas
Khan's Edible Oasis
Yard as of Jan 2019

Guanabanus

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1780 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?

Har

skhan

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1781 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
Khan's Edible Oasis
Yard as of Jan 2019

strkpr00

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1782 on: September 27, 2020, 09:07:30 PM »
Lakes are routinely with weed killer, maybe the water in the back round was treated.

alejandro

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1783 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

ammoun

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1784 on: October 08, 2020, 10:34:12 AM »


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.

bovine421

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1785 on: October 25, 2020, 06:25:43 PM »
Help help I need help :) HoneyKiss

Started at the bottom and now it's working its way to the top

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Jaboticaba45

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1786 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.
I graft palms and bananas -Ryan

bsbullie

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1787 on: October 25, 2020, 07:11:47 PM »
Help help I need help :) HoneyKiss

Started at the bottom and now it's working its way to the top


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.
- Rob

EddieF

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1788 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.

Guanabanus

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1789 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.
Har

bovine421

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1790 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.

Wow this looks like ick like my guppies get when I don't have their thermostat on. :)

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EddieF

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1791 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?



Guanabanus

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1792 on: October 25, 2020, 10:39:35 PM »
Bovine,

Mango scale and masses of their eggs and crawlers.
Har

bovine421

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1793 on: October 25, 2020, 11:41:07 PM »
Bovine,

Mango scale and masses of their eggs and crawlers.




Which would work best soap or oil
« Last Edit: October 25, 2020, 11:43:54 PM by bovine421 »
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Guanabanus

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1794 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.
Har

dross99_si

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1795 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.











Guanabanus

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1796 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.
Har

Guanabanus

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1797 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.
Har

dross99_si

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1798 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.
« Last Edit: October 27, 2020, 12:09:27 PM by dross99_si »

bsbullie

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #1799 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.











In the first two pictures, I have seen that look on Coco Creams grown in pots with poor airflow at nurseries.
- Rob

 

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