Need more info about how big the tree is, its history, etc. Did it try the same thing last year, what variety..

The sap coming out of small holes sounds like something poking at it. The yellowing could be Anthracnose. Does it get black and gooey? As dghays stated, could you provide us more information? How long has the tree been in the ground? What varieity? Do you fertilize, what type and when was the last time you did. How much are you watering/not watering? Is the tree heavily ladened? Has the truck been damaged by a lawnmower, weed wacker, etc. As a Mango-Maniac I'm concerned for you and we're here to help.

It is a Nam Doc Mai (sp) and about 7 feet high with about a 8-10 foot spread, supposedly dwarf/semi-dwarf and been in the ground about six years. The fertilizer is a 6-4-6 made by Sunniland and according to the bag is for citrus, mangos and avocados and was last done about a month ago. The last watering was about 7 inches of rain we got over a three day period from 7/13-7/16. I didn't notice any black fluid coming out of the fruit but I have noticed a few small holes on the trunk and larger branches with a black sap running down. Happened to stop by a nursery today and they said it could be a fungus. I did spray it with copper and Neem oil a few weeks ago when the fruit were starting to set. Otherwise the tree is healthy and in fact is putting out some new growth again.

Thanks for the information. Seven inches is a lot of water in three days, that could be a contributing factor to some of your fruit falling off. How far south of me are you? I ask, because my Name Doc Mi is just about "finished" fruiting this season, I've only got a few left on the tree. When you spray, I would recommend that you only spray copper - I reserve (again my opinion) Neem when it's only absolutely necessary for the destruction of bugs. When you fertilized were there bloom spikes/ flowers? How many fruit are on the tree? Grunches of them? I've had fruit abort just because there were too many (citrus does that all the time). And you say there's new growth developing? I may be wrong, but I think it's too late for the fruit AND the emerging growth together. Mine usually sprouts after the fruit has been picked. Can you get any images for us? Thanks Anyone else have any comments?

Thanks tampaart. I live in Pinellas county just on the northern edge of Seminole. I can't remember for sure but I believe there were bloom spikes and quite a few but unfortunately only about 18 or so fruit reached any kind of size and now there are only 6-8 left. I don't know how many times a year a mango blooms but it seems like mine does twice a year and it is not long after the fruit sets (or doesn't) that new growth starts.

Here is a link that might be useful: Photobucket

Can you please post the pics again, its asking for a password. Would love to see pics of your Mango tree. Thanks!

I am pretty new to growing Mangos myself. Have some young trees, so I'm no expert. But I think I read somewhere that it is best not to fertilize trees that are blooming/fruiting because the nitrogen promotes growth flushes. Best to wait till the fruits have been harvested, then fertilize. That may have caused the fruit to abort, plus the 7" of rain in just 3 days. You said it is in a growth flush now, so apparently the rain and the fertilizer is putting out your new growths...Good luck!

Ditto on the password protected images. This morning on my way to work, I picked the last NDM I had - it was a great crop this year, but some of my other mango trees did not do well. Blame the weather pattern (or lack thereof) for it.

Tampaart, Nice mangos. How old are your trees, and when did they start producing for you? I have 5 planted in the ground and 2 in pots. Mine were planted around April 07. Its finally grown enough now to hold a few fruits next year, weather they will or not is another story. Thanks!

I have same issue as I live in South Florida. I have 12 Mango Trees 8 feet high and 8 Feet wide. I bought 10x10 Feet Wide Plastic sheet and when there is rainy chances i cover around the trunk 10 feet area so rainy water will not go to the root of Mango tree. also add soil to make 8 inch high bed around 6 feet of the tree it will help getting water near the tree,

This happens every year with my tree. The tree is huge and was there when I moved into the house. When the fruit first appears most of it falls and the weather is a factor as well. If it's windy or rainy, then the falling fruit increases. Now I still have a lot of fruit that is larger and will ripen into delicious mangoes. also, I get a good crop every other year. Last year I hardly got any, this year I'll be giving it away.