Shoots per vine was significantly higher for minimally pruned vines. However, total vegetative growth, as indicated by mature nodes per vine, was greatest for GDC vines and lowest for MP vines. There were few treatment effects on vine water relations except at veraison when differences due to irrigation method were detected. Vines with the SDI 0.4 Et treatment had lower stomatal conductance than vines with the SDI 0.8 Et. At this point in the project, significant differences between training systems and irrigation methods have been detected.
Further research is needed to determine the reasons for the observed differences.