The Field Efficacy Trials of Chlorfenapyr 10% SC on Diaphorina Citri Kuwayama and Phyllocnistis Citrella Stainton and Other Citrus Pests

DENG Ming-xue1,QIN Xu1,TAN You-long1,ZHAI Gao-yun2,GAN Guang-yao2, JIANG Jian-jun2,LAN Bing-tuan2,WEI Wei2 (1.Guangxi Citrus Research Institute,Guilin 541004,Guangxi,China;2.Liuzhou Huinong Chemical Company,Liuzhou 545002,Guangxi,China)

chlorfenapyr;Diaphorina citri Kuwayama;Phyllocnistis citrella Stainton;Dialeurodes citri Ashmead;Panonychus citri McGregor;field efficacy

BACKGROUND: The field efficacy trials on chlorfenapyr 10% SC had been conducted out to validate the control effect against Asian Citrus Psylla(Diaphorina citri Kuwayama),Phyllocnistis citrella Stainton,Dialeurodes citri Ashmeadand Panonychus citri McGregor in August to October in 2010. RESULTS: The results of field trials showed that the efficacies of 3,7 days after treatment of chlorfenapyr 10% SC against Phyllocnistis citrella were all 100% at 500,667 mg/L and 97.9% and 92.1% at 1000 mg/L.The efficacies were 83.2% and 25.1% after 1,3 days treatment against Dialeurodes citri at 1000 mg/L.The efficacies against adult of Asian Citrus Psylla were 95.1% to 99.8% during 1 to 15 days after treatment at 667,1000 mg/L.The efficacies against Panonychus citri were 63.2% to 90.9% during 2 to 15 days after treatment at 500,667,1000 mg/L. CONCLUSIONS: Chlorfenapyr 10% SC provided good efficacy against Phyllocnistis citrella,Asian Citrus Psylla and Panonychus citri and quick-acting and short persistent effect against Dialeurodes citri.