A comparative study between fertilizing Banaty grapevines with sulfur-coated urea and urea the traditionally fast relase nitrogen fertilizer

摘要

Growth leaf content of N, P and K, yield and quality of Banaty grapes in response to fertilization with sulfur-coated urea and urea were investigated during 1995 and 1996 seasons. Results showed that supplying the vines with sulfur-coated urea surpassed the application of urea on enhancing growth, the leaf N status, fruit set and the yield in quantity and quality. Meaningless influence was detected due to raising the number of batches from one to two or rates of N from 80 to 160 g/vine in sulfur-coated urea form on the studied characters. Supplying Banaty grapevines with N at 80 g/vine in sulfur-coated urea form at one batch at growth start considered the most promising treatment.