Integrated weed management in winter season groundnut {Arachis hypogaea L.)

摘要

A field experiment was conducted during the winter season of 2008 to study the effect of different weed management practices on weed control, yield and economics of groundnut (Arachis hypogaea L.). The results revealed that hand weeding twice at 20 and 40 days after sowing (DAS), intercultivation (IC) with starweeder at 20 DAS + hand weeding (HW) at 40 DAS, imazethapyr @ 100 g a.i/ha at 20 DAS + HW at 40 DAS, pendimethalin (a) 1.0 kg a.i/ha as pre emergence (PE) + HW at 40 DAS and pendimethalin @ 1.0kg a.i/ha as pre emergence (PE) + imazethapyr % 100 g a.i/ha at 20 DAS were effective in efficient weed control and in realizing higher pod yield (ranged 1649-1754 kg/ha) and haulm yield (ranged 2400-2439 kg/ha). These treatments resulted in higher weedcontrol efficiency (WCE). Higher B: C ratio was obtained with the pendimethalin as PE + imazethapyr as POE (1.77) followed by pendimethalin as PE + hand weeding at 40 DAS. (1.72).