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Grape leaves that are distorted and undersized and have dark lesions on the petiole (top center) due to Phomopsis cane and leaf spot, Phomopsis viticola.

Damaged foliage showing distorted leaf blade and necrotic petioles. Credit: Jack Kelly Clark
Grape leaves that are distorted and undersized and have dark lesions on the petiole (top center) due to Phomopsis cane and leaf spot, Phomopsis viticola. Credit: Jack Kelly Clark
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