Yield and plant vigor of 'Niágara Rosada' grape vine related to the rootstock

Abstract

The yield and plant vigor of 'Niágara Rosada' grafted on the 'IAC 313', 'IAC 766', 'Kober 5BB', 'Traviú' (106-8 Mgt) and 'Schwarzmann' rootstocks were evaluated from 1990 to 1998, in Taubaté, SP, Brazil. The highest average yields were obtained on the 'IAC 313' and 'IAC 766' rootstocks, reaching 2.69 kg/plant and 2.59 kg/plant, respectively. Yields on 'Kober 5BB' and 'Schwarzmann' were 110% smaller than on the previous ones, while 'Traviú' showed intermediary behavior. 'IAC 313' and 'IAC 766' also induced higher vigor in the vine, represented by higher mass of pruned branches and higher diameter of plant. 'Niágara Rosada' cultivation in the region is recommended on the 'IAC 313', 'IAC 766' or 'Traviú' rootstocks.