Effect of planting density on growth and yield of onion varieties under climatic conditions of Peshawar
2007
Dawar, N.M. (NWFP Agricultural Univ., Peshawar (Pakistan). Dept. of Horticulture) | Wazir, F.K. (NWFP Agricultural Univ., Peshawar (Pakistan). Dept. of Horticulture) | Dawar, M. (NWFP Agricultural Univ., Peshawar (Pakistan). Dept. of Horticulture) | Dawar, S.H.
A research project was carried out at the Horticultural Farm, NWFP Agricultural University, Peshawar during 2003, to investigate the effect of three regimes of planting densities (40. 60 and 80 plants/4m2) on onion varieties namely Swat-1. Terich-02 and Gilassi local. The experiment was laid out on Randomized Complete Block Design (RCBD) with 2-factors arrangement. The results show that lower planting density significantly increased the number of leaves per plant (14.80) and large bulbs weight (720.29 g). The medium planting density has significant effect only on weight of double bulbs (609.39 g). Higher planting density significantly increased leaf length (52.51 cm), weight of small bulbs (738.11 g), weight of medium bulbs (958.50 g), single bulbs weight (1774.00 g) and total yield of bulbs (7072 kg per ha). The results indicated that Terich-02 has shown good performance with higher weight of medium bulbs (995.00 g), large bulbs (742.39 g), single bulbs (1515.44 g) and double bulbs (552.00 g). Greater leaf length (51.87 cm) and weight of small bulbs (483.67 g) were examined in Swat-1, while Gilassi local was found to have poor performance for all the parameters except for number of leaves per plant which were maximum (15.22). The interaction between planting density and varieties was significant only for bulb yield. Maximum yield (7958 kg per ha) was produced by Terich-02 at a density of 80 plants/4m2.
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