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

Wilting beetle damage (370); thrips (371).

PHOTO 370. Upon completion of the feeding actions (as shown in Photo 369) on the shoot tip and the underlying tissue, young organs are subjected to wilting with subsequent desiccation.

PHOTO 371. Thrips affect leaves on both sides, which causes distinct spots/blemishes with a silvery shimmer.

236 • A Guide to Grapevine Abnormalities in South Africa