Plant disease (Sour rot) management in grapes

Treatments to loosen clusters include bloom applications of gibberellic acid and prohexidione Ca as well as prebloom leaf removal. Treatments to make skins more resistant to splitting include Calcium, soluble silicate and kelp sprays. Various antimicrobial treatments will be evaluated once fruit reach 15 Brix. Incidence and severity of sour rot and volatile acidity will be determined at commercial harvest.


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Last Validated Date 2017-01-23
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