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Disease on 'America'

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What disease I'm lookin at here? Southwestern CT (zone 6a). Trying to learn my grape diseases. Thanks.20190610_191311.jpeg
 

KevinL

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They look like black rot spots, but they're too close to the edges. Black rot typically has those spots, but randomly on the leaf. I'd bet a fungus of some kind is your culprit. Good luck!
 
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Thanks. It's very minor, and I have a good program in place (as long as I find the time to spray).
 

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