well .... i would have transplanted it when it was without leaf ... or in VERY EARLY SPRING .... when it had months to grow roots before the heat of summer hit ... next issue.. most trees ... [cant say i am a mango expert though] prefer a good drink and then no standing water in the roots ... so they prefer a soil that is very high in drainage.. very loose .. and NOT high in peat.. which retains water ... so what did you fill the barrel with??? also. if i had no choice in timing.. i would have transplanted it.. and put it in full shade for a couple weeks to a month.. while the roots started pumping again.. before i stuck it back in full sun ... unless mango is somehow unique... a lot of trees will releaf if everything else is proper .... you need immediate shade.. then we have to figure out the soil and watering issues ... good luck ken ps: drainage holes in the bottom of the barrel???

Wikipedia does have a article on this, it does give some suggestions like proper mulching. http://en.wikipedia.org/wiki/Phytophthora_cinnamomi I remember reading elsewhere that while you can't control whether or not fungus exists you can control some of the factors for when it spreads. Like any life form it needs the right environment to thrive. Temperature, food, and water in the right quantities being the chief components of outbreaks. Eliminate one of the three, and you can eliminate an outbreak. At least in lawns, fungus likes high nitrogen environments. Excessive water is another component that you can have some control over. You really can't do much about temperature. I'd say to try reducing the amount of fertilizer in the soil as the rainy season approaches. Then after it is over, resume. You also may want to try fungicides leading into the rainy season as well, even when it is not a visible problem. You may be able to put a dent in the population before it has a chance to spread. You are never going to be able to kill it off completely, but you may be able to make it manageable. Tons of assumptions and suggestions here, take with a grain of salt. Good luck.

Hottest part of the day is 1-4PM. Does it come back when you water and then wilt again the next day? Are you still watering it regularly? Looks kinda dry. Mulch will help keep moisture in the soil, keep it away from the trunk by at least 6" (some will say a foot or more) Is it planted deeper than it was in the pot? When planting, I am in the camp of "other than the plant, never add any thing back into the hole that didn't come out of it".

Hi guys, Need some advice here. I had a lot of bugs couple months ago so I made a random mix of organic things and sprayed my trees. This ended up doing more harm than anything :/ it killed the top half of the tree but the bottom half has been growing great. But not branches are starting to dye off one by one from the top down that had been growing really well. What do I do at this point? Should I cut the tree below the last dying branch and hope it doesn't continue to work its way down?