Black Rot

[foxgidge]

My husband was given over care of a couple Niagara and Concord grape arbors this year. They have been there for many years and never sprayed or tended other than pruned. He has pruned and sprayed these as directed and the grapes were looking great. They are a few miles from us so he hadn’t seen them for a couple week and went to spray them again and the grapes and leaves were covered with a disease. Sent pictures to a local horticulturist and identified as “black rot”. Need help on what to do, know that there is no hope for a harvest this year but what do we need to do to hopefully clear this up and prevent in future.

 

[cottonwoodks]

This is probably a question for a different forum. I'm familiar with brown rot rather than black, and other than always cleaning up the leaf litter and fallen fruits, I don't know.....