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1 June 2015 Comparison of Insecticide Susceptibilities of Empoasca vitis (Hemiptera: Cicadellidae) from Three Main Tea-Growing Regions in China
Qi Wei, Yu Hua-Yang, Chun-Dong Niu, Rong Yao, Shun-Fan Wu, Zhuo Chen, Cong-Fen Gao
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Abstract

Empoasca vitis (Göthe) is an important insect pest in tea-growing areas of China, and chemical control is the main tactic for the management of this pest. Due to the pressure of increasing insecticide resistance and more stringent food safety regulations, development of sound IPM strategies for E. vitis is an urgent matter. This study comparatively evaluated four field populations of E. vitis from three different tea-growing regions in China for their susceptibilities to eight insecticides using a simple leaf-dip methodology. E. vitis was found to be most sensitive to indoxacarb (LC50 <0.5 mg/liter) and least sensitive to isoprocarb (LC50>5 mg/liter) and sophocarpidine (LC50>95 mg/liter, a botanical pesticide) regardless of populations. Population (geographical) variations were higher for indoxacarb and imidacloprid than other compounds. Judging by the 95% fiducial limits of LC50 values, all populations had similar susceptibilities to chlorfenapyr, bifenthrin, and acetamiprid or imidacloprid. Correlation analysis suggested that chlorfenapyr and indoxacarb or isoprocarb may have a high risk of cross resistance. Considering potency (LC50) and maximum residual levels, chlorfenapyr and bifenthrin are good insecticide options followed by acetamiprid and indoxacarb. These results provide valuable information to intelligently select insecticides for IPM programs that are efficacious against E. vitis while also managing insecticide resistance and maximum residual levels for tea production in China.

© The Authors 2015. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com
Qi Wei, Yu Hua-Yang, Chun-Dong Niu, Rong Yao, Shun-Fan Wu, Zhuo Chen, and Cong-Fen Gao "Comparison of Insecticide Susceptibilities of Empoasca vitis (Hemiptera: Cicadellidae) from Three Main Tea-Growing Regions in China," Journal of Economic Entomology 108(3), 1251-1259, (1 June 2015). https://doi.org/10.1093/jee/tov063
Received: 17 December 2014; Accepted: 1 March 2015; Published: 1 June 2015
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KEYWORDS
Empoasca vitis
insecticide susceptibility
leaf-dip method
tea pest
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