Diamondback moth (Plutella xylostella L.) resistance to organophosphorus and carbamate insecticides in Kangwon alpine vegetable croplands

강원도 고랭지대 배추경작지 배추좀나방(Plutella xylostella L.)의 유기인계 및 카바메이트계 살충제에 대한 저항성 발달

  • Cho, Jun-Mo (Division of Biological Environment, Kangwon National University) ;
  • Kim, Kyoung-Ju (Division of Biological Environment, Kangwon National University) ;
  • Kim, Song-Mun (Division of Biological Environment, Kangwon National University) ;
  • Han, Dae-Sung (Division of Biological Environment, Kangwon National University) ;
  • Hur, Jang-Hyun (Division of Biological Environment, Kangwon National University)
  • 조준모 (강원대학교 농업생명과학대학 자원생물환경학부) ;
  • 김경주 (강원대학교 농업생명과학대학 자원생물환경학부) ;
  • 김성문 (강원대학교 농업생명과학대학 자원생물환경학부) ;
  • 한대성 (강원대학교 농업생명과학대학 자원생물환경학부) ;
  • 허장현 (강원대학교 농업생명과학대학 자원생물환경학부)
  • Published : 2001.03.30

Abstract

Diamondback moth (Plutella xylostella L.) recently became a single worst insect which is not controlled effectively by organophosphorus and carbamate insecticides in Kangwon alpine croplands. The objective of this study was to determine if diamondback moth has developed a resistance to organophosphorus and carbamate insecticides. Resistance of diamondback moth, collected at Keichon, Jangpyong Taebaek, Chunchon, and Hongchon, was determined by the concentration required to kill fifty percent of population, $LC_{50}$. Their response of resistance varied to insecticides and locations: Taebaek populations were 35 and 70 times more resistant to chlorpyrifos and fenitrothion, respectively, than susceptible(S) population. Hongchon populations were 94 and 254 times more resistant to chlorpyrifos and fenitrothion, respectively, than S population. In addition, Chunchon populations were 37 and 19 times more resistant to profenofos and benfuracarb, respectively, than S population. However, the field populations did not differ in resistance to diazinon, phenthoate, flupyrazofos, carbofuran, and furathiocarb. This study show that field populations of diamondback moth found in Kangwon alpine vegetable croplands have developed a resistance and/or multiple resistance to some insecticides, implying that farmers are losing organophosphorus and carbamate insecticide options for selective control in vegetable crops.

Keywords

resistance;diamondback moth;Plutella xylostella L.;organophosphorus insect;icides;carbamate insecticide