Need Help: Unidentified Mango Disease & Nothing is Working
I am having a problem resolving whatever is killing any new growth that emerges on my Valencia Pride seedling. I am going to post pics below in hopes that someone can tell me what is causing this. This seedling has tried to push new growth all summer and each time this black shiny coating creeps up the branch and up the vein of the leaf then spreads over the branch and kills it. It is not sooty, can't be wiped off and acts like a dried shellac like finish. As you can see in the pics it actually has cracks it it. I have shown branches to several nurserymen who sell mango trees and no one can tell me. PS This is the mango seedling I previously posted about -where the tap root was broken when I up-potted it. I have tried Bromide and copper to cure it. Nothing has worked so far.