ABSTRACT
The grapevine ‘Cabernet Sauvignon’ used for wine purposes is increasing its cultivation in the region of São Roque (State of São Paulo, Brazil) being the vertical shoot position (VSP) system the most usual among the growers. Recently it was introduced the Y training system, therefore a field trial was carried out to characterize yield and chemical characteristics of the must of ‘Cabernet Sauvignon’ grown under different training systems. Evaluations were made during the following growing seasons: 2010/11, 2011/12 and 2012/13. The grapevines trellised on the Y shape showed higher cluster weight and yield when compared to the VSP system. The obtained values of yield varied from 9.89 and 13.64 t ha-1 for the VSP system and from 13.34 and 17.43 t ha-1 for the Y shaped system. Regarding the chemical characteristics of the must (soluble solids, pH and titratable acidity) it was not found statistical differences when comparing the training systems. The obtained values of total soluble solids content varied from 17.3 and 19.3°Brix and titratable acidity from 98 and 143 meq.L-1 for different growing seasons evaluated.
Index terms
grapevine; soluble solids; trellising system; training system
