APPLICATION OF NITROGEN SOURCES ON GRAPEVINES AND EFFECT ON YIELD AND MUST COMPOSITION

作者：Brunetto Gustavo^*; Ceretta Carlos Alberto; Bastos De Melo George Wellington; Girotto Eduardo; Avelar Ferreira Paulo Ademar

来源：Revista Brasileira de Fruticultura, 2013, 35(4): 1042-1051.

• Urea
• organic compost
• leaf analysis
• must quality
• Vitis vinifera

This study was carried out to evaluate the yield, total N content in leaves and must composition of grapes from the Cabernet Sauvignon variety subjected to the application of urea and organic compost. Cabernet Sauvignon grapevines in Rosario do Sul, RS, Brazil, in 2008, 2009 and 2010 were subjected to annual application of 40 kg N ha(-1) in the form of organic compost and urea, and compared to unfertilized grapevines. In the 2008/09, 2009/10 and 2010/11 crop seasons, leaves were collected for analysis of total N content. At maturation of the grapes, the yield and quality attributes of the must were evaluated. The application of N sources, especially organic compost, increased the N content in the whole leaf at full flowering. Application of organic compost and urea has little effect on grape yield and does not affect the total nutrient content in the must, nor the enological attributes.

• 出版日期2013-12