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

Erinose.

PHOTO 330. The undersides of leaves are practically covered in white growths – thus creating the impression that entire leaf surfaces are covered with protrusions in the shape of massive galls (with leaf edges curling downwards).

PHOTO 331. An example of severe erinose damage to this shoot of a Sauvignon blanc grapevine – causing the normal physiological functions of leaves to be severely compromised.

212 • A Guide to Grapevine Abnormalities in South Africa