Screening of indoor pesticides and evaluation of field control effectiveness for stem rot disease of Dioscorea esculenta
In order to provide new ways for the prevention and control of stem rot disease in Dioscorea esculenta,this article conducts drug screening through indoor toxicity testing and field experiments to screen effective prevention and control drugs for stem rot disease of Dioscorea esculenta.Using the minimum inhibitory concentration method in the toxic medium method,the indoor toxicity of 19 pesticides was determined,and based on this,6 pesticides with better control effects were selected for field control experiments.The results showed that bromonitrol had the strongest antibacterial effect in indoor toxicity testing,with a minimum effective concentration of 4.69 mg·L-1,followed by thiamethoxazole,mesobiotin,amphotericin(kasumin),oxytetracycline,streptomycin sulfate,and amphotericin·thiazole zinc.The minimum effective concentrations of inhibition were 7.50,18.25,28.13,37.50,75.00 and 150.00 mg·L-1,respectively.Among the six selected pesticides in the field experiment,amphotericin·thiazole zinc had the best control effect,with a control effect of 82.16%,followed by thiamethoxazole,mesobiotin,bromonitrol,and amphotericin·zhongshengmycin,with a control effect of 79.55%,77.18%,76.56%,and 75.02%,respectively.They can all be used as effective control agents for stem rot disease of Dioscorea esculenta in the field.
Dioscorea esculentastem rot diseaseprevention and controlpesticide screeningfield efficacy
万方数据
维普
