Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Insecticidal response of 14 insecticides against Korean Bemisia tabaci local populations

14종 살충제의 담배가루이 성충에 대한 살충제 약제반응 조사

  • In-Hong Jeong (Crop Protection Division, National Institute of Agricultural Science, RDA) ;
  • Leesun Kim (Crop Protection Division, National Institute of Agricultural Science, RDA) ;
  • So-Hee Kim (Environmental Agricultural Research Division, Gyeonggi-do Agricultural Research and Extension Services) ;
  • Jong Hyeok Lee (Department of Agricultural Biotechnology, Seoul National University) ;
  • Kyungjae Andrew Yoon (Department of Agricultural Biotechnology, Seoul National University) ;
  • Si Hyeock Lee (Department of Agricultural Biotechnology, Seoul National University)
  • 정인홍 (농촌진흥청 국립농업과학원 작물보호과) ;
  • 김이선 (농촌진흥청 국립농업과학원 작물보호과) ;
  • 김소희 (경기도농업기술원 환경농업연구과) ;
  • 이종혁 (서울대학교 농생명공학부) ;
  • 윤경재 (서울대학교 농생명공학부) ;
  • 이시혁 (서울대학교 농생명공학부)
  • Received : 2023.09.21
  • Accepted : 2023.12.15
  • Published : 2023.12.31
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Abstract

Bemisia tabaci Gennadius, one of the most invasive insect pests, has spread quickly nationwide since it was introduced to South Korea in 2008. The use of insecticides is the main management strategy for this pest, but the control efficiency has been decreased due to insecticide resistance. We collected 12 local B. tabaci populations to investigate the regional differences in efficiency and observed the mortality from 14 commercial insecticides applied at recommended concentrations (RC) and dilutions (0.1 RC and 0.01 RC) using the leaf dipping bioassay. Except for etofenprox (46-64%), thiamethoxam (37-60%), pyriproxyfen (21-61%), and pyridaben (61-65%), the other insecticides showed excellent insecticidal efficacy of 70% to 100% at their RC. In particular, flupyradifurone, emamectin benzoate, and cyantraniliprole showed high insecticidal efficacy of over 90% in all of the tested populations. Some insecticides that rapidly decreased in activity (less than 30%) at diluted concentrations or showed high resistance levels in nearby regions were classified for cautious use due to the possibility or potential to develop resistance. The results provide selected insecticides for B. tabaci control by region and could contribute to reducing insecticide abuse and increasing insecticidal efficiency in farming fields.

침입해충인 담배가루이(Bemisia tabaci Gennadius)의 12개 지역집단에 대하여 살충제 14종의 추천농도(RC, recommended concentration)와 추천농도의 10배(0.1RC), 100배(0.01RC) 희석농도에서의 살충력(mortality)을 엽침지법을 이용하여 조사하였다. Etofenprox, thiamethoxam, pyriproxyfen, pyridaben 등 4종을 제외한 대부분의 살충제들은 추천농도 (RC)에서 70%에서 100%의 우수한 살충력을 보였고, 특히 flupyradifurone, emamectin benzoate, cyantraniliprole은 모든 조사 지역에서 90% 이상의 높은 살충력을 보였다. 낮은 살충력을 보인 지역집단은 etofenprox의 경우 경기 광주(52%)와 안성(54%), 경남 창녕(46%), 전남 순천(64%)과 고흥(66%) 지역이었으며, thiamethoxam은 경기 광주(58%), 안성(37%), 충남 논산(58%), 경남 창녕(60%), 전북 완주(59%), 정읍(48%), 전남 순천(53%) 지역이었고, pyriproxyfen은 경기 안성(21%), 충남 논산(61%), 당진(61%), 경북 안동(56%), 경남 창녕(46%), 전북 정읍(40%) 지역 그리고, pyridaben은 충남 당진(61%)과 전북 정읍(65%) 지역이었다. 또한 희석농도에서 급격히 활성(30% 이하)이 낮아지거나 주변 지역에서 높은 저항성을 보이는 약제들은 저항성 발달 가능성이 높아 지역에 따라 주의가 필요한 약제로 분류하였다. 본 결과를 통하여 지역별 우수한 약제들을 선발할 수 있었으며 이들 약제반응 정보를 활용하면 영농현장에서 살충제의 남용은 줄고 담배가루이 방제효율이 증대될 것으로 기대된다.

Keywords

Acknowledgement

본 논문은 환경부의 재원으로 농촌진흥청의 생물다양성위협 외래생물관리기술개발사업(과제번호: RS-2021-RD009881)의 지원에 의해 이루어진 연구결과의 일부입니다.

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