NITROGEN FOLIAR SPRAYING IN GRAPEVINE: CONTENT IN LEAVES AND RESERVE OF NITROGEN AND CARBOIHYDRATES IN SHOOTS BUDS

作者：Brunetto Gustavo^*; Girotto Eduardo; de Melo George Wellington; dos Santos Henrique Pessoa; Ceretta Carlos Alberto; Kaminski Joao; Beber Vieira Renan Costa

来源：Revista Brasileira de Fruticultura, 2008, 30(4): 1119-1123.

• Vitis Vinifera
• foliar fertilization
• starch
• aminoacids
• proteins

Leaf nitrogen application is used in grapevines in Southern Brazil as complement to soil fertilization. Oil the other hand, there is no information about its affects on nitrogen content in the leaves and nitrogen and carbohydrates reserves in the perennial parts. The experiment was carried out in 2004/2005, with the objective to evaluate the effect of nitrogen foliar spraying oil leaves and nitro-en and carbohydrates reserves in shoots buds of Chenin Blanc grapevine, at Udortheiri soil, in Bento Gont;alves. Rio Grande do Sul, Brazil. The treatment was three foliar applications: 0 (water); 1. 11; 2.23; 3.31; 4.41 g N grapevine(-1). Leaves were picked. dried and prepared to total nitrogen analyses. In the last leaf sampling, three shoots and six buds were taken in each plant, prepared and analyzed for starch. total soluble carbohydrates, carbohydrates reducers. total amino acids and total proteins. Leaf nitrogen application increased nitrogen content in the leaf and decreased starch content and total soluble carbohydrates in shoots buds, but did not affect carbohydrates reducers and totals of aminoacids and proteins.

• 出版日期2008-12