Evaluation of new herbicides for weed management in summer blackgram (Vigna mungo L.)

A field experiment was conducted during summer season of 2010 on medium black clayey soils to study the weed management in summer blackgram (Vigna mungo L.). An application of pendimethalin 1 kg/ha pre-emergence+1 HW+IC at 40 DAS was found most effective in reducing weed population (viz. monocot, dicot and sedges weeds) and resulted in less dry weight of weeds (204 kg/ha), higher WCE (85.91%), higher herbicidal efficiency index (46.08%) as well as lowest WI (7.92%) and it was closely followed by oxyfluorfen 0.18 kg/ha pre-emergence+1 HW+IC at 40 DAS. Pendimethalin 1 kg/ha pre-emergence+1 HW+IC at 40 DAS and oxyfluorfen 0.18 kg/ha pre-emergence+1 HW+IC at 40 DAS were found equally effective in yield parameters and yield over other treatments. Two hand weedings at 20 and 40 DAS were found statistically at par in these parameters.