A field experiment was conducted during summer seasons of 1991 and 1992 at Jabalpur to evaluate the efficacy of different herbicides in mungbean. The treatments comprised pendimethalin (1.0, 1.5 and 2.0 kg/ha) at PE; fluchloralin (0.75,1.0 and 1.5 kg/ha) at PPI and clomazone (0.5, 1.0 and 1.5 kg/ha) at PO along with weedy and weed-free. The predominant weed species were Chicorium intybus, Commelina communis, Corchorus sp. and Chenopodium album in broad leaved weeds and Echinochloa colonum, Cynodon dactylon among grassy and Cyprus rotundus among sedges. Weeds caused 42% reduction in grain yield. The application of herbicides reduced the weed population and weed dry matter and increased the grain yield significantly. Among herbicides, fluchloralin has shown best result in reducing weed population and weed dry matter and increasing grain yield. However, clomazone has reduced weed population and weed dry matter drastically but it has shown toxic effect on crop yield.
