Evaluation of some post-emergence herbicides against weeds in summer irrigated gingelly (Sesamam indicum L)

A field experiment was conducted during summer 2004–2005 to evaluate suitable post-emergence herbicides to see their effect on weeds and growth and yield of summer gingelly. The herbicides used were pendimethalin, fenoxaprop-p-ethyl, imazethapyr and cyhalofop butyl each integrated with one hand weeding (HW). Results indicated that lowest weed population and highest weed control efficiency (WCE) were achieved with the application of pendimethalin @ 1 kg ai/ha followed by 1HW at 35 days after sowing (DAS). Higher values of plant height, leaf area index (LAI), capsules/plant and grain yield were achieved under pendemethalin spray @ 1 kg ai/ha+1 HW followed by fenoxaprop-p-ethyl @ 100 g/ha+1 HW which was found to be on par with cyhalofop butyl @ 100 g/ha+1 HW and 2 HW.