RT Journal Article SR Electronic T1 Effects on Must and Wine Composition, Rates of Fermentation, and Wine Quality of Nitrogen Fertilization of Vitis Vinifera Var. Thompson Seedless Grapevines JF American Journal of Enology and Viticulture JO Am J Enol Vitic. FD American Society for Enology and Viticulture SP 124 OP 129 DO 10.5344/ajev.1979.30.2.124 VO 30 IS 2 A1 A. A. Bell A1 C. S. Ough A1 W. M. Kliewer YR 1979 UL http://www.ajevonline.org/content/30/2/124.abstract AB Thompson Seedless vines were treated for three years with various levels of nitrogen fertilizer. The vineyard had not been fertilized for over seven years preceding. The clarified grape juice was analyzed for various components. The rates of fermentation, concentration of esters, and wine quality were dependent on the level of nitrogen fertilization. Fertilization with 112 kg N/ha (100 lb-N/acre) was sufficient for the juice to have a rapid fermentation and the wine to be of good quality. Juice from vines not fertilized fermented more slowly, resulted in wines of poorer quality, and was deficient in a number of chemical components.