RT Journal Article
SR Electronic
T1 Effect of Mild Leafroll Disease on Growth, Yield, and Fruit Maturity Indices of Riesling and Zinfandel
JF American Journal of Enology and Viticulture
JO Am J Enol Vitic.
FD American Society for Enology and Viticulture
SP 367
OP 369
DO 10.5344/ajev.1992.43.4.367
VO 43
IS 4
A1 James A. Wolpert
A1 Edward P. Vilas
YR 1992
UL http://www.ajevonline.org/content/43/4/367.abstract
AB Effects of two isolates of mild leafroll (LR) disease on vine growth, yield components, and juice maturity indices were studied over a three year period, 1986 through 1988. LR108-infected Riesling consistently showed delayed sugar accumulation of 1 to 1.6 °Brix. In 1986, LR107-infected Zinfandel showed a 1.7 °Brix reduction compared to controls but was not significantly affected in the other two years. Juice acidity and pH of both varieties were not affected by disease infection. Vine growth and yield components showed no significant effects.