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

Black foot (133); Petri disease (134).

PHOTO 133. Black foot exacts its toll from this young grapevine.

PHOTO 134. Vascular tissue blockage/rotting by glueing associated with Petri disease.

90 • A Guide to Grapevine Abnormalities in South Africa