A field trial was conducted in Northern Haronia Muqdadiah – Dialah , to investigate the response of weeds in broad bean (Vicia faba L.) field to the residues of some herbicides used on autumn corn (Zea mays L.) Autumn corn was treated with following treatments : premergence and post emergence application of isoxafluatol , postemeergence application of prosulfuron, preemergence application of Lumax , and preemergence application of atrazine . weedy and weed free treatments were also included . Data on injury , density , and percentage of control of weeds of broad bean
were recorded at 1, 2 , 3and 6 weks after sowing and at harvest time of broad bean . The results revealed that the residue of the herbicides had a significant effect on density and percentage of weed control of broad bean at 2 and 3 weeks after the sowing and at harvest time of broad bean . Next to harvest time of broad bean no significant injury on weed plants emerged in the same plots of the different treatments were observed at the next summer or autumn season.It was concluded that the residue of the high rates of Lumax ,atrazine and Prosulfuron had a significant effect on weed control of broad bean especially at 2 or 3 weeks after sowing.