EFFICACY OF AQUEOUS EXTRACTS OF DIFFERENT ALLELOPATHIC PLANTS ON GERMINATION AND GROWTH OF WHEAT AND WILD OAT

摘要

The present study investigates the effect of various doses of N, P and K (0, 50, 100 and 150 kg ha-1) on sunflowerhybrids (SF-187 and Parsun-1. The data indicated that different parameters (plant height, head diameter, number of seedshead-1, 100 seed weight and biological yield) were significantly (p≤0.05) affected by an increase in fertilizer level in allcombinations when compared with the control. Maximum seed yield (2813 kg ha-1) was produced by fertilizer combinationsof 150:100:100 NPK kg ha-1 and minimum in control plot (1813 kg ha-1). Hybrid Parsun-1 produced less yield than SF-187.Oil content also varied with different combinations of NPK fertilizers, which ranged from 37 to 39%.during both theseasons. Maximum biological yield (15.8 tons ha-1) was produced in NPK combination of 150:100:100 kg ha-1.