Performance of mango (Mangifera indica L.) cultivar Amrapali under high density plantations in submontane low hill zone of Himachal Pradesh.

摘要

The high density plantations with dwarf and regular bearing mango can prove to be a viable option for small land holders. Accordingly, the aim of present study was to find out best spacing for planting a dwarf and regular bearing mango cultivar Amrapali under high density plantation strategies. The studies were conducted on 19 years' old orchard (428 m above mean sea level) in submontane low hill zone located at a latitude of 32 degrees 18' N and longitude of 75 degrees 55' E. The experiment was laid out in randomized block design with three spacings (2.0x2.0, 2.5x2.5 and 3.0x3.0 m) and seven replications at University's Regional Horticultural Research Station, Jachh district Kangra (H. P.). Different tree spacings significantly affected growth parameters (trunk girth, scion girth, shoot growth, tree spread in NS and EW direction) which were observed to be maximum with widest (3.0x3.0 m) spacing and minimum with closest (2.0x2.0 m) spaced plants excepting tree height. Tree height was maximum (336.0 cm) in plants at closest (2.0x2.0 m) spacing, while it was minimum (240.0 cm) in the wider spacing of 3.0x3.0 m. Significantly highest fruit size and weight (12.4x7.2 cm and 338.2 g, respectively) were noticed in trees planted at a spacing of 3.0x3.0 m. The highest fruit yield (25.1 kg/tree) was also harvested in spacing of 3.0x3.0 m. However, calculated fruit yield on hectare basis was maximum (48.8 t) in closest (2.0x2.0 m) spaced plants.