The investigation on adverse effect of the herbicides used in the wheat fields on following crops sown after the wheat harvest

Some herbicides belong to the group of Acetolactate synthase enzym inhibitors (ALS) used in wheat were studied to determine their degradation into the different soils and residual effect of following crops; cotton, soybean, corn and lentil sown in the same year. None of herbicides makes any side effect on yield of cotton and corn, four months after application while only Triasulfuron+Dicamba (0.51+8.19 g.a.i./da) could make side effect on the yield of soybean. Triasulfuron+Dicamba, Mesosulfuron methyl+ Iodosulfuron methyl sodium (0.9+0.18 g.a.i./da), Propoxycarbazone sodium (7 g.a.i./da), Mesosulfuron methyl+ Propoxycarbazone sodium (1,13+1,68 g.a.i./da ) and Sulfosulfuron (0.19 g.a.i./da) make side effect on yield of the lentil seven months after application in Ceylanpınar location. Bioassay studies indicate that the soil degradation of the herbicides in Hacıhasan (high organic matter, low silt) and Balcalı (low silt) locations were found faster than Ceylanpınar (high silt, low organic matter) and Oymaklı (high silt and low organic matter) locations.