Effect of insecticides and acaricides on controlling Panonychus citri with insecticide-resistant predatory mites
To study the control effect of field insecticides and insecticides-resistant predatory mites(Neoseiulus barkeri Hughes)on Panonychus citri,and to explore the application of predatory mites and chemicals in the field,to reduce the amount of pesticides,to increase the effectiveness of prevention and aging to provide theoretical guidance.The insecticides and acaricides commonly used in the field were Cyhalothrin,Avermectin,Triterpene,Spironolactone,Diphenylhydrazine,Acetamiprid,Imidacloprid and Mineral oil,combined with the release of drug-resistant predatory mites.The population of pesticide-resistant predatory mites and Panonychus citri were investigated in the field,and the control effects of different control measures were analyzed.The results showed that under different control measures,the fastest growth of the predatory mites population with insecticide-resistant predatory mites was found in the areas of single-use insecticide-resistant predatory mites and Mineral oil+insecticide-resistant predatory mites treatment,the second was Avermectin+insecticide-resistant predatory mites,Triterpene+insecticide-resistant predatory mites and Diphenylhydrazine+insecticide-resistant predatory mites treatment.The lower populations of Panonychus citri were Avermectin+insecticide-resistant predatory mites,Triterpene+insecticide-resistant predatory mites,Spironolactone+insecticide-resistant predatory mites and Diphenylhydrazine+insecticide-resistant predatory mites treatment.The control effect showed that the four treatments of Triterpene+insecticide-resistant predatory mites,Avermectin+insecticide-resistant predatory mites,Diphenylhydrazine+insecticide-resistant predatory mites,and Spironolactone+insecticide-resistant predatory mites had better control effects,on the 35th and 42nd days after hanging,the control effects of Triterpene+insecticide-resistant predatory mites were more than 90.61％,and that of Avermectin+insecticide-resistant predatory mites and Diphenylhydrazine+insecticide-resistant predatory mites were more than 86.32％.The results also showed that the control effects of Triterpene+resistant and Avermectin+resistant predatory mites were good from the 14th day after the predatory mites were suspended,especially,the control effect of Triterpene+insecticide-resistant predatory mites is good and the control effect is long.Long-term control of Panonychus citri can be achieved by using insecticides and acaricides such as Avermectin,Triterpene,Spironolactone,and Diphenylhydrazine in combination with resistant predatory mites,can be popularized in the field application.
insecticides and acaricidespredatory mitesPanonychus citrisynergycontrol effect
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