Effects of Density and Planting Patterns of Mungbean, Vigna radiate, and Herbicides on Weed Control and Yield of Mungbean

This experiment was conducted to evaluate the effects of planting methods, planting density of mungbean and application of herbicides on weed control and yield of mungbean for two years at Safi abad agricultural research center of Dezful, I. R. Iran. The experiment was arranged so as to form strip split split plots with three replications. Vertical factor were planting patterns at four levels : planting of two rows of mungbean on beds with 60, 75 and 90 cm width, respectively, and planting of one row of mungbean on beds 50 cm apart, horizontal factor was mungbean density at two levels: plant spaces of 5 and 10 cm on the row, and subplots were application of herbicides at seven levels : preemergence application of prometryn at 1.2 kg ai. ha-1, oxyfluorfen at 0.48 kg ai. ha-1, oxadiazon at 0.36 kg ai. ha-1, pendimethalin at 1.15 kg ai. ha-1, preplant application of trifluralin at 1 kg ai. ha, weed free and weedy checks. Results show that overall, ranking of the effect of herbicide treatments on weed density are : oxyfluorfen> trifluralin> prometryn> pendimethalin> oxadiazon. Effect of oxyfluorfen and trifluralin on reduction of weed biomass was greater than the other herbicides. Ranking of the effect of herbicide treatments on yield increase are : oxyfluorfen> trifluralin> oxadiazon> prometryn> pendimethalin. Therefore to increase the yield and weed control in mungbean field, planting of one row of mungbean on beds with 50 cm width and 5 cm spacing between bushes along with the application of trifluralin at 1 kg ai. ha-1 or application of oxyfluorfen at 0.48 kg ai. ha-1 are recommended.