Proportional Reduction in Shoot Growth of Grapevines With Root Systems Maintained at Constant Relative Volumes By Repeated Pruning

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Abstract
Grapevines were established in water culture and shoot length and leaf number were measured after imposing four levels of root-pruning treatment. These levels (control, and 75, 50, and 25% of the control root volume) were maintained for 8 weeks by making weekly checks followed by appropriate pruning. Shoot dry weights were also measured in some plants at fortnightly intervals.