Dithiopyr at 360 g ha- I proved superior in reducing the density of Phalaris minor than the lower doses and was at par with trifluralin at 1250 g ha-' and isoproturon at 1000 g ha- I. Density of broad leaf weeds was significantly lower in the plots treated with dithiopyr at 240 g ha- 1 compared to trifluralin at 1250 g ha- 1 • Tank mixture of dithiopyr+isoproturon at 120+ 1000 g ha- 1 reduced the total dry weight of weeds by more than 90% over weedy check and provided similar yield to that of isoproturon and weed-free treatment. It was observed that at higher dose (480 g ha- I) of dithiopyr crop lodged due to thin stem and increased length of internodes.