A Guide to Grapevine Abnormalities in South Africa - P.G. GOUSSARD

Anthracnose.

PHOTO 65. In contrast with the grotesque intravenous appearance, anthracnose spots on petioles and primary veins are considerably smaller and more elongated.

PHOTO 66. Tearing and shedding of dead tissue from spots is very characteristic of anthracnose, imparting a tattered look to the leaves.

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