Abstract
Factorial experiment was carried out at College farm (Mosul prov) and Sharkat (Salah alldeen prov) in 2006-2007 winter growing season to investigate the effect of some herbicides (Glyphosate 565 ,1250 ,Gesagard 1250 ,2500 Basgran 250 , 500 cm3 a.i /ha and check treatment ) on four varity of broadbean crop ( Babylon , Syrain , Koryshi, Towythai ) . RCBD design with three replications were used with Duncan multiple rang test .Unsignificant results had been showed between varitys in the weed biomass at Sharkat while Syrain varity had reduced the broad leave weed biomass at college farm . On other hand , Babylon varity was superior in the seed yield and protein at two locations . Herbicides used gave excellent reduction in weed biomass at Sharkat location but at college farm ,the reduction had seen on broad leaves weeds only . The interaction between Babylon× Basagran 500 cm3/ha gave a good result in increasing seed yield and protein up to 71 and 30.5 % , respectively at college farm and 75.8 and 24.6 % , respectively at Sharkat location if it compared with check treatment . The second option was with koryshi varity treated with same herbicide and dose in increasing seed yield only . Gesagard had no selectivety for broadbean which all crop plants under land farming . Generally , there is a negative correlation at two locations between seed yield and broad leave weed biomass while positive correlation had been seen between seed yield and number of pods per plant or number of seeds per pod at two locations .
