Herbicides were evaluated in field and pot studies against three major broad-leaved weeds (Rumex dentatus, Convolvulus arvensis and Malva parviflora) of wheat. In pot study, effective control of R. dentatus was achieved with the application of isoproturon, carfentrazone, 2,4-D, metribuzin, terbutryn, dicamba, mesosulfuron+iodosulfuron and metsulfuron. Sulfosulfuron was ineffective against R. dentatus, C. arvensis and M. parviflora. Isoproturon was ineffective against M. parviflora and C. arvensis. For the control of C. arvensis, carfentrazone, metsulfuron, dicamba and 2,4-D were effective. M. parviflora was effectively controlled by carfentrazone and metribuzin. Wheat crop, infested with grasses and broad-leaved weeds, yielded better with application of isoproturon 1000 g/ha and pre-mix combination of isoproturon+carfentrazone (Affinity 50.75 WP) @ 1000+15 g/ha than alone application of carfentrazone 20 g, metsulfuron 4.0 g or 2,4-D 500 g/ha. This was due to additional control of grass weeds with isoproturon compared to metsulfuron, carfentrazone and 2,4-D, which were only effective against broad-leaved weeds. The advantage of combination of isoproturon and carfentrazone over isoproturon will be in situations having infestation of C. arvensis and M. parviflora.
