Authors: Tony K. Wolf and John D. Boyer, Professor of Viticulture and Lecturer, Virginia Tech
Publication Number 463-020, December 2003
Figure 15. Symptoms of North American Grapevine Yellows on Chardonnay. Vine in top photo shows poor wood maturation, downward rolling leaves, leaf yellowing, and cluster abortion in August. A representative shoot from a nearby healthy vine was cut and placed on the affected vine to contrast the appearance of affected and healthy shoots. Photo on bottom is a close-up of affected cluster in June.
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