Field Efficacy Trials of 1%Bifenthrin·thiamethoxam GR against Sweet Potato Weevil  

作　　者：Xiaopeng LIU Zhenhua ZHAO Junding HUANG 

机构地区：[1]Jiangmen Plant Protection Co.,Ltd.,Jiangmen 529000,China [2]Jiangmen Plant Protection Technology Co.,Ltd.,Jiangmen 529000,China [3]Agricultural Pest Precaution and Management Center of Guangdong Province,Guangzhou 510500,China

出　　处：《Plant Diseases and Pests》2023年第2期14-15,26,共3页植物病虫害研究（英文版）

摘　　要：[Objectives]The paper was to verify the field efficacy of 1%bifenthrin·thiamethoxam GR replacing organophosphorus GR against sweet potato weevil and its impact on the yield and quality of sweet potato.[Methods]A total of 4 field trials were conducted in Guangdong Province,including 1%bifenthrin·thiamethoxam GR applied at the doses of 3,4 and 5 kg/667 m^(2),and 3%phoxim GR applied at the dose of 4 kg/667 m^(2).[Results]1%Bifenthrin·thiamethoxam GR applied at the dose of 5 kg/667 m^(2)had excellent control effects on sweet potato weevil,with an average control effect of 77.60%,which was significantly higher than that of 3%phoxim GR applied at the dose of 4 kg/667 m^(2)(48.52%).And the average yield increase rate of sweet potato treated with 1%bifenthrin·thiamethoxam GR reached 24.79%,significantly higher than 12.37%in the control group.[Conclusions]1%Bifenthrin·thiamethoxam GR should be evenly distributed on the ridge surface near sweet potato within 5-7 d after planting,and the recommended dosage is 5 kg/667 m^(2),which will have good control effect on sweet potato weevil and increase the yield of sweet potato.

关 键 词：Bifenthrin·thiamethoxam PHOXIM Sweet potato weevil Control effect 

分 类 号：S435.315[农业科学—农业昆虫与害虫防治]