Black spots on mango leaves

11 years ago

I've noticed black spots appearing on even my new mango leaves. I wonder what causes it and if it's something I can do about it?

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Comments (3)

bananafan
Original Author
11 years ago
On the back of an old leaf, this is what I've discovered. There are also black spots on the surface of the other old leaves as well. Most of the new leaves look ok, but it seems like the black spots are spreading to the new ones. Any idea what is bothering it?
puglvr1
10 years ago
Hi banana, I've had those and some of them still have them :o(
I have NO idea what it is either but it doesn't seem to be anything too serious? At least if its the same as what you have...that's been my experience...I don't think its anthracnose I've had that too and it looks different. Maybe someone else can diagnose it for us...
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Kaiser, sounds like Leaf Spot to me (a fungal disease). Where are you in the country? More likely in Florida, not totally unlikely here in California as well. Copper can be used, and probably would want to spray earlier in the winter several times, through into our May Grey/June Gloom, while we have conditions that promote fungal growth (temps in the mid 60's the mid 70's, and overcast). Just be sure the copper spray is a weak enough dilution that it can be sprayed on green leaves. If you can identify the organism, you can also see if one of the more common fungicides are effective, such as Serenade (organic option) or Daconil. Chlorothalonil , Fenbuconazole and Myclobutanil (Ortho's Disease B Gon contains Chlorothalonil). Patty S. Here is a link that might be useful: U of Florida: Mango Disesases
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I had the same issue with my mango. And it turn out to be that I was overfeeding it. I found this online. Leaf Burn Problems in the soil extend to problems with your mango tree leaves, such as dry brown spots. Such problems include too much nitrogen or excessive salts in the soil. Both problems come as a result of over-fertilization. Fertilizers increase the amount of salt in the soil and raise the nitrogen levels. Excessive amounts of these elements cause leaf burn in your mango tree, and leaves develop dry, brown spots of patches. If the leaf burn is severe, the leave may die and drop from the tree. Read more: http://www.ehow.com/info_12311248_mango-trees-dry-brown-spots-leaves.html#ixzz2xkMu8c2k
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Hi NoraKim - no I wouldn't worry about the spots - you'll find these trees have all kinds of little things that go and go. What I would be worried about is all the leaves that seem to have fallen off except where the budding part of the stem is! Are you giving them enough light? It really seems like they are away from the window and getting too much shade....and how about water? They look like they are indoors - where do you live - could be a problem unless you get them more light
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Depends on what the underside looks like. If the underside is dark brown/black then it's more likely anthracnose. If you can ameliorate the problem by increasing the health of the tree (eg, with foliar micronutrient spray), then that would be a better approach. Spraying copper isn't necessarily a good thing to do unless you really need to. Dr Campbell mentioned that the reason why he can't grow lychees at fairchild farm is because of the amount of copper built up in the soil from spraying copper for many years on what was once an avocado orchard. He now uses a copper free fungicide. I pretty rarely use fungicide myself. Jeff
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bananafan
Original Author
10 years ago
Puglvr,

I'm sorry yours also got the same problem. I really hope it's nothing serious ... and yes definitely hope we all can find out what's bothering them. Perhaps those who have mangoes here might have the same problem? Any idea what it is?

I don't know if some variety of mango is more susceptible to diseases. This one happens to be the Nam Doc Mai which had a lot of white spots before I cleaned it all up and pruned it.

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Black spots on mango leaves

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bananafan
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puglvr1

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Black spots on mango leaves

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bananafanOriginal Author

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