Canopy Structure of Invigorated Guava Plants at Different Heights of Heading Back and Pruning Intensities

Significant reduction in vegetative growth with increased severity of heading back was recorded in all years of observations. Although, the vegetative growth of senile (control) trees was remained highest and almost similar in all years of observations, but, among headed back plants, severely headed back (1.5 m) trees exhibited smaller canopies followed by 2.0 m and 2.5 m, respectively. The intensity of pruning also had significant effect on vegetative growth of trees. During the initial years, the canopy volume was decreased with the severity of pruning with minimum canopy volume in trees pruned at 75 % intensity in all levels of heading back. Un-pruned headed back plants exhibited higher canopy volume. The headed back plants exhibited about 50 per cent, 40 per cent and 30 per cent reduction in tree canopy volume in 1.5 m, 2.0 m and 2.5 m headed back trees as compared to un-headed back (senile trees) up to fifth years of rejuvenation, respectively.