Studies on the effect of weed management practices on weed and crop characteristics in rajmash (Phaseolus vulgaris L.) under cold desert region of North-western Himalayas
DOI:
https://doi.org/10.59797/journaloffoodlegumes.v29i2.532Keywords:
Grain yield, Imazethap yr, Pend imethalin, Profitability, RajmashAbstract
A field experiment was conducted during Summer, 2013 at Kukumseri, Lahaul & Spiti, Himachal Pradesh to study the effect of pre-and post-emergence herbicides alone or in combination on weed dynamics and grain yield of rajmash. The experiment was laid out in a thrice replicated CRBD with ten treatments. Pendimethalin at 1.2 kg/ha PRE (preemergence) resulted in maximum weed control efficiency (80%) and herbicide efficiency index (73.5%) followed by two hand weeding at 30 DAS and 60 DAS. Enhanced grain yield (3336 kg/ha), total dry matter production (8100 kg/ha), crop productivity (33.04 kg/ha/day), net returns (INR 275,685/ ha), crop profitability (INR 2,730/ ha/day) and B:C ratio (3.58) were recorded with pendimethalin at 1.2 kg/ha as preemergence. Leaving pendimethalin @1.2 kg/ha as PRE (the best treatment) alone, odyssey at 50 g/ha (a ready mixture of imazethapyr & imazamox) as POE (post-emergence) could prove to be the next best chemical weed control treatment so far as post emergence application of herbicides were concerned.
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