Abstract
Two studies were conducted during 2006-2008 at Punjab Agricultural University, Ludhiana to evaluate the effect of pruning on growth and yield of Jatropha. Five (control, secondary branch cutting at 15 cm, 30 cm, 45 cm and 60 cm) and three (control, pruning to half height and two third height) pruning treatments were applied on 4-5 year old plants in first and second study, respectively. The pruning resulted in significant increase in number of branches and branch length in both studies. In first study, no fruiting was observed in pruned plants during first season after pruning. The flowering and fruiting during next season (September-October) was also significantly less in all pruning treatments than those of control. The highest seed yield in second study was obtained in control (1690 g/plant) with significantly lower values in pruned plants.
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