عنوان مقاله [English]
نویسندگان [English]چکیده [English]
In order to assess the effects of sulfonylurea herbicides on canola planted in rotation after wheat, this study was conducted in a randomized complete block design with ten treatments in four replications. Treatments included application of herbicides: Total® (metsulfuron methyl+sulfosulfuron), Chevalier (idosulfuron+mesosulfuron), Apirus (sulfosulfuron) at 21, 31.5, 42 and 51 g ai ha-1, Megaton (chlorsulfuron), Bromicide ("bromoxynil + MCPA"+ clodinafop-propargyl), Atlantis (idosulfuron+mesosulfuron), and no-herbicide control. Herbicides were sprayed in the end of tillering stage of wheat. Canola was planted after wheat harvest in the fall. Results showed that Total has indicated a decline up to 20.3 percent in seed yield (highest decrease in yield) versus untreated control. Following Total, Apirus at 51 and 42 g ai ha-1 and Megaton at 15 g ai ha-1 caused 17.3, 13.53 and 13.32 percent yield loss leading to the highest decrease in yield, respectively.