Growth,  Imazethapyr, Residual effect, Soybean, Weed control, Yield

Field experiment was conducted to evaluate the efficacy of imazethapyr on weed control in soybean and its residual effect on succeeding crops. Early post-emergence application of imazethapyr reduced broad-leaved weeds and grass density as well as dry weight when compared with pre-emergence application of pendimethalin and oxyfluorfen. Imazethapyr at 200 g/ha decreased the dry weight accumulation of all weeds significantly followed by imazethapyr 100 g/ha. Due to phytotoxic effect at 200 g/ha during initial stages yield and yield attributes were get reduced. Imazethapyr at 100 g/ha was found best treatment by giving more seed yield. To study the residual effect of imazethapyr on succeeding crops, sunflower and pearl millet were grown without disturbing the soil. The residues of imazethapyr at different doses did not influence germination, growth, yield of sunflower and pearl millet and was statistically at par with checks.