Hi everyone, I have some Chardonnay and Pinot Noir grapes growing at home that I hope to make wine with someday. I was hoping for my first vintage this year, however I have an unknown fungus. Last year I recognized they had powdery mildew so I sprayed them over winter and in the growing season since. The foliage is very healthy and there is very little powdery mildew, however the grapes themselves have a combination of a grey powder and black/purple covering on the skin. This black/purple covering can be scraped off. Some of the berries are splitting already and we have another 2 months to go before harvest here in NZ. Photos are attached. I would have thought this was severe powdery mildew but the leaves are OK? Any feedback/help would be greatly appreciated. Thanks in advance!