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Author Topic: Mango Pests, Diseases, and Nutritional Problems  (Read 303845 times)

samuelforest

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #250 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?

mangomandan

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #251 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.

bsbullie

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #252 on: December 15, 2012, 12:01:53 AM »
pictures people, please post pictures so we can help you...
- Rob

murahilin

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #253 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.

mangomandan

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #254 on: December 15, 2012, 09:11:45 AM »
Sorry.  I'll try to post pics when I get home Sun night or Monday.

samuelforest

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #255 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.

Guanabanus

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #256 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.
Har

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #257 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.






Carbo

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #258 on: December 16, 2012, 09:02:32 PM »
My Cogshall has the same appearance.

Mr. Clean

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #259 on: December 24, 2012, 02:38:32 PM »
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« Last Edit: April 16, 2014, 02:21:13 PM by Mr. Clean »
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samuelforest

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #260 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.

Cookie Monster

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #261 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.








Jeff  :-)

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #262 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.







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?
Harry
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bsbullie

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #263 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.
?????
- Rob

bsbullie

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #264 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.









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.
- Rob

Squam256

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #265 on: December 25, 2012, 10:17:52 AM »
That looks like potassium deficiency.

Cookie Monster

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #266 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.
Jeff  :-)

murahilin

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #267 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.

Squam256

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #268 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 ;)


Guanabanus

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #269 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.
Har

bsbullie

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #270 on: December 26, 2012, 07:07:19 AM »
Powdery Mildew also tends to occur in the Spring.

http://edis.ifas.ufl.edu/vh048
- Rob

Mike T

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #271 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..

Cookie Monster

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #272 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.
Jeff  :-)

Tropicdude

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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #273 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.
William
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Re: Mango Pests, Diseases, and Nutritional Problems
« Reply #274 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?






 

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