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

Corky bark (215); rugose wood complex (216).

PHOTO 215. An example where dead, coarse bark was not subject to normal shedding, in order to reveal characteristic abnormalities associated with corky bark. A cross section of the dead trunk (see Photo 216) revealed obvious signs of stem grooving – which may be indicative of the joint occurrence of these two diseases.

PHOTO 216. Typical grooving revealed by a cross section of the trunk as in Photo 215.

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