Effect of application time of dual purpose herbicides and mixing herbicides on weeds control and wheat yield

An experiment was conducted to evaluate efficiency of application time of dual purpose herbicides and mixing herbicides on weeds control and growth, physiological, yield and components yield of wheat based on randomized complete block design with three replications in research farm of Gonbad Kavous University in 2014-2015 growing season. Treatments included Total (sulfosulfuron+metsulfuron-methyl), atlantis (idosulfuron+ mesosulfuron+ Mefenpyer-diethyl), Othello (mesosulfuron+ iodosulfuron+ diflufenican+ mefenpyr-diethy), Apirous (sulfosulfuron), Granstar (tribeneron methyl)+Topic (clodinafoppropargyl) in two application times such as primary tillage and primary booting. Treatment of without application of herbicides and hand weeding in two studied times also were used as control. Results showed that aplication of dual purpose herbicides and Granstar +Topic along hand weeding in different consuming times had significant difference on traits such as leaf area, spikes number per m2, number of seeds per spike, seed yield, biological yield, harvest index, chlorophyll a, b and prolin content (p<0.01). On the basis of results, in the most cases herbicides applications and hand weeding in primary tillage time increased effeiciency of them as compared to primary booting.