Author Topic: Mango Pests, Diseases, and Nutritional Problems (Read 669232 times)

MJ88 · « **Reply #2425 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.

MJ88 · « **Reply #2426 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.

MJ88 · « **Reply #2427 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.

Guanabanus · « **Reply #2428 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.

Guanabanus · « **Reply #2429 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.

MJ88 · « **Reply #2430 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

Julian R · « **Reply #2431 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:

Julian R · « **Reply #2432 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.

MJ88 · « **Reply #2433 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.

INaba · « **Reply #2434 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

INaba · « **Reply #2435 on:** August 15, 2023, 07:53:36 AM »

Also what deficiency the leaves show, thanks.

love_Tropic · « **Reply #2436 on:** August 17, 2023, 11:41:19 PM »

Can anyone explain what’s happening with the flush? It’s Keitt tree in 15 gal.

DesertTropicals · « **Reply #2437 on:** August 31, 2023, 07:46:34 PM »

Message removed

DesertTropicals · « **Reply #2438 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:

Aug 10, 2023:

Aug 12, 2023:

Aug 15, 2023:

Aug 17, 2023. Big leaves dropped within a few days after some windy days.

Aug 30, 2023: New growth developing poorly:

Cookie Monster · « **Reply #2439 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?

DesertTropicals · « **Reply #2440 on:** September 01, 2023, 03:28:11 PM »

Quote from: 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?

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.

Cookie Monster · « **Reply #2441 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?

DesertTropicals · « **Reply #2442 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.

dm · « **Reply #2443 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

hipasfolk · « **Reply #2444 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? $:-\$

hipasfolk · « **Reply #2445 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.

EddieF · « **Reply #2446 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

DesertTropicals · « **Reply #2447 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.

fruitnut1944 · « **Reply #2448 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?

DesertTropicals · « **Reply #2449 on:** October 20, 2023, 10:47:56 AM »

Quote from: 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?

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.

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Author Topic: Mango Pests, Diseases, and Nutritional Problems (Read 669232 times)