PT  - JOURNAL ARTICLE
AU  - James A. Wolpert
AU  - Edward P. Vilas
TI  - Effect of Mild Leafroll Disease on Growth, Yield, and Fruit Maturity Indices of Riesling and Zinfandel
AID  - 10.5344/ajev.1992.43.4.367
DP  - 1992 Jan 01
TA  - American Journal of Enology and Viticulture
PG  - 367--369
VI  - 43
IP  - 4
4099  - http://www.ajevonline.org/content/43/4/367.short
4100  - http://www.ajevonline.org/content/43/4/367.full
SO  - Am J Enol Vitic.1992 Jan 01; 43
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.