Researches were made in Buzias-Silagiu viticultural center in 2006-2007 period and were focused on soil maintainance systems influence upon quantitative and qualitative yield in case of Cabernet Sauvignon, Pinot noir and Muscat Ottonel varieties.Soil maintenance was made using classic method, permanent grassing, plants cultivation as green fertilizer and herbicidation.Observations and determination were made on varieties and plots concerning grapes maturation, obtained yield, sugar content, acidity and gluco-acidimetric index was calculated.In case of all varieties the highest yield was obtained in case of soil maintenance using plants cultivation as green fertilizer, meanwhile highest sugar content was obtained in case of the plots maintened as black field.

soil maintenance systems; variety of wine grapes; quality

Presentation: oral