Post-emergence application of isoproturon at 0.75 kg and 1.0 kg/ha was quite effective against winter annual broadleaf weeds and Phalaris minor and selective to the sugarcane + Indian mustard intercropping system. This treatment gave 6b.1 to 90.6% and 44.8 to 45.3% mean increase in yield of sugarcane and intercrop Indian mustard, respectively. Pre-emergence application nf isoproturon at-0.75 kg and 1.0 kg/ha was comparatively less selective to Indian mustard than post-emergence treatment. Application of fluazifop-butyl at 0.25 kg/ha (post emergence) was toxic to sugarcane and failed to control broadleaf weeds. Pendimethalin at 0.75 kg/ha (p, e-emergence) was slightly phototoxic to the intercrop Indain mustard but gave excellent control of Paminor.
