Susceptibility of sweetpotato whitefly, Bemisia tabaci (Homoptera : Aleyrodidae) to commercially registered insecticides in Korea

외래해충인 담배가루이의 약제감수성

  • Kim, Gil-Hah (Department of Agricultural Biology, Chungbuk National University) ;
  • Lee, Young-Su (Department of Agricultural Biology, Chungbuk National University) ;
  • Lee, In-Hwan (Department of Agricultural Biology, Chungbuk National University) ;
  • Ahn, Ki-Su (Chungbuk Provincial Agricultural Technology Administration)
  • 김길하 (충북대학교 농과대학 농생물학과) ;
  • 이영수 (충북대학교 농과대학 농생물학과) ;
  • 이인환 (충북대학교 농과대학 농생물학과) ;
  • 안기수 (충북농업기술원)
  • Published : 2000.03.31

Abstract

These studies were carried out to investigate the toxicities of 43 registered insecticides to the sweetpotato whitefly(Bemisia tabaci, B. biotype). Insecticide activities were evaluated by testing systemic action and residual effect in the laboratory, and control efficacy in the greenhouse. All experiments were tested at the recommended concentration(ppm) of each insecticides. Insect growth regulators (IGRs), pyriproxyfen and teflubenzuron showed >95% ovicidal effect. The insecticides that showed >95% larvicidal activity on 3rd nymphal instars were abamectin, acetamiprid, imidacloprid, pyriproxyfen, and acetamiprid+ ethofenprox. Insecticides with >95% adulticidal activity were abamectin, acetamiprid, diazinon, endosulfan, fenitrothion, imidacloprid, methidathion, pirimiphos-methyl, pymetrozine, spinosad, acetamiprid+ ethofenprox, cartap kydrochloride+buprofezin, and fenpropathrin+fenitrothion. Abamectin, acetamiprid, imidacloprid, pyriproxyfen, and acetamiprid+ethofenprox showed both residual effect and systemic activity. In the control efficacy test on B. tabaci, 90% control values were obtained at 1st day after treatment of the insecticides including abamectin, acetamiprid, imidacloprid, pyriproxyfen and acetamiprid+ethofenprox but in pyriproxyfen, 90% control value was reached at 7th day after treatment. These results indicate that abamectin, acetamiprid, imidacloprid, pyriproxyfen and acetamiprid+ethofenprox can be used in control for B. tabaci in field.