Field control effect and benefit evaluation of different pesticide combinations on wheat mid to late stage diseases
To screen out the most efficient combination of control agents for the prevention and control of wheat diseases in the middle to late stages,7 new agents such as 18.7%propyrimidin suspension(Yangsui)and 6 conventional agents such as 50%benzoyl propiconazole aqueous emulsion(Yingyue)were applied at jointing booting stage,heading and flowering stage and blooming stage,respectively,with no application of drugs as blank control.The prevention and control effects of Fusarium head blight in the middle to late stage of wheat were investigated,and the safety and yield of wheat were observed.The results showed that each treatment combination was safe for wheat growth under experimental doses,had good control on scab,powdery mildew and rust in the middle to later stages of wheat,and had good yield increase effect.Among them,the T2 treatment(Jointing and booting stage used Yangsui 750 mL/hm2+Licheng 300 mL/hm2+Alika 150 mL/hm2+Yishibang 750 mL/hm2;Heading and flowering used Maitian 900 mL/hm2+Maitian partner 600 mL/hm2+Alika 150 mL/hm2+Yishiduojin 750 mL/hm2;Flowering used Maitian 900 mL/hm2+Maitian partner 600 mL/hm2+Yishiduojin 750 mL/hm2)had the best control effect and the highest wheat yield.In conclusion,different agents were used in the common areas of wheat Fusarium head blight could effectively control wheat disease and delay the development of its drug resistance.
wheat mid to late stage diseasescombination drugpreventive effectwheat yield
NETL
NSTL
万方数据
