Not an answer to your disease question, but an observation about fruit. I’ve been marking wild persimmon trees on my field edges for the last 3 years. If I see fruit, I tie a piece of flag tape onto a branch, and depending on the size and location of the tree, I might clear some other trees around it. Several trees I marked last year do not have any fruit this year, and a couple trees that were not marked in the past, have some fruit this year. Leading me to believe persimmon trees will sometimes skip a year on fruit production???? Two trees marked and cleared around 3 years ago are getting nice sized and loaded with fruit. Hope to have more of those in the future! PS: the leaves on my persimmons always seem to have spots later in their growth.