A Guide to Grapevine Abnormalities in South Africa - P.G. GOUSSARD
Injudicious suckering (513); topping machine damage (514).
PHOTO 513. In this instance the sucker shoots, as in Photo 512, would have to have been broken, cut or even torn off, thereby favouring the ingress options for wood rotting fungi into numerous wounds.
PHOTO 514. Topping machine damage caused to the bunch before véraison. In addition to economic implications, such wounds serve as ideal points of ingress to rotting organisms.
330 • A Guide to Grapevine Abnormalities in South Africa
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