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

Aster Yellows.

PHOTO 267. This is a further example of reddening of leaves as in Photo 266.

PHOTO 268. A typical example of yellowing disease (called Flavescence dorée) where leaves look brittle and thicker than usual – with edges curling downwards – is illustrated in this gravely affected white grape cultivar in France.

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