Effects of five herbicides on the control of Poaceae weeds in winter wheat fields
To screen for safe and efficient herbicides for the control of gramineous weeds in winter wheat fields,a comparative efficacy trial was conducted using 5 commonly used herbicides,including 3%mesosulfuron-methyl SC,and others.The trial analyzed the impact of these herbicides on wheat safety,weed control efficacy(plant control efficacy and fresh weight control efficacy,immediate and delayed effectiveness of the herbicides,and the types of weeds controlled),and the rate of loss recovery.The results showed that the application rates of the 5 tested herbicides were safe for the growth of wheat in the 4-5 leaf overwintering stage.The weed control and pest suppression effects of 3%mesosulfuron-methyl SC,5%pinoxaden EC,and 75%flucarbazone-sodium WG were the best,with plant control efficacies of 94.01%,83.03%,and 74.65%,respectively,110 days after application,the fresh weight control efficacies were 94.97%,88.56%,and 82.97%,respectively.Among them,5%pinoxaden EC and 7.5%pyroxsulam WG had better immediate control effects,while 3%mesosulfuron-methyl SC and 5%pinoxaden EC had longer-lasting effects.5%pinoxaden EC was the most effective in controlling Alopecurus aequalis and Alopecurus japonicus,while 3%mesosulfuron-methyl SC was the most effective in controlling Beckmannia syzigachne.Compared with the control plots,the recovery rates of wheat loss under 3%mesosulfuron-methyl SC,5%pinoxaden EC,and 75%flucarbazone-sodium WG were 29.28%,25.18%,and 22.40%,respectively.In practice,herbicides with different action mechanisms should be used alternately to control weeds in wheat fields.
万方数据
维普
