A field experiment was conducted during kharif season of 2008 at Livestock Farm, JNKVV, Jabalpur to study the efficacy of imazethapyr against weeds in groundnut. The experimental field was infested with grassy weeds Echinochloa colona (33.72%), Dinebra retroflaxa (24.18 %), and sedge Cyperus iria (42.09 %) at 40 DAS. The efficacy of imazethapyr as post emergence when applied between 50 to 150 g/ha was poor, which improved slightly with the increase in application rates between 200 to 300 g/ha. However, combined application of imazethapyr at lower rate 100 g/ha + chlorimuron 24 g/ha paralysed...