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

Aster Yellows.

PHOTO 269. The premature dieback of shoot tips is considered characteristic of Aster Yellows disease.

PHOTO 270. A further example of shoot tip dieback, which is followed by dieback of entire shoots in this example.

174 • A Guide to Grapevine Abnormalities in South Africa