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

Choking/strangulation.

PHOTO 505. The reason/cause for the sudden drying out of this grapevine as in Photo 504, is revealed here.

PHOTO 506. Early autumn discolouration of leaves resulting from a strangulating effect caused by rope (09:00 position, just left of the fork) on the phloem tissue of the cordon arm in question. Not to be confused with leafroll.

326 • A Guide to Grapevine Abnormalities in South Africa