Mango fungal diseases are always around but healthy soil keeps it from damaging our trees and fruit. For us in Florida there are so many Frogs. Most trees have multiple frogs asleep on the leaves during the day and I personally am not alright with completely exterminating an entire species, all these frogs and an unknown amount of other microorganisms by spraying copper, just for a temporary fix that actually only disguises the symptoms. There is a universal permanent solution that actually works great at managing fungal disease in Mangos and it doesn’t require spraying copper, for us it is healthy soil, organic matter and biology.