title: Comparison of Insecticide Susceptibilities of Empoasca vitis (Hemiptera: Cicadellidae) from Three Main Tea-Growing Regions in China.
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.
authors.affiliation: College of Plant Protection, Nanjing Agricultural University, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Wei
authors.affiliation: College of Plant Protection, Nanjing Agricultural University, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China.
authors.forename: Hua-Yang
authors.initials: HY
authors.lastname: Yu
authors.affiliation: College of Plant Protection, Nanjing Agricultural University, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China.
authors.forename: Chun-Dong
authors.initials: CD
authors.lastname: Niu
authors.affiliation: College of Plant Protection, Nanjing Agricultural University, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China.
authors.forename: Rong
authors.initials: R
authors.lastname: Yao
authors.affiliation: College of Plant Protection, Nanjing Agricultural University, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China.
authors.forename: Shun-Fan
authors.initials: SF
authors.lastname: Wu
authors.affiliation: State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Guizhou University, Guiyang 550025, China.
authors.forename: Zhuo
authors.initials: Z
authors.lastname: Chen
authors.affiliation: College of Plant Protection, Nanjing Agricultural University, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China. gaocongfen@njau.edu.cn.
authors.forename: Cong-Fen
authors.initials: CF
authors.lastname: Gao
mesh_terms: D000818:Animals; D002681:China; D006430:Hemiptera / Q000187:drug effects* / Q000235:genetics / Q000254:growth & development; D007305:Insecticide Resistance; D007306:Insecticides / Q000494:pharmacology*; D009758:Nymph / Q000187:drug effects / Q000235:genetics / Q000254:growth & development; D013662:Tea / Q000254:growth & development
chemical_list: D007306:Insecticides; D013662:Tea
keywords: Empoasca vitis; insecticide susceptibility; leaf-dip method; tea pest