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Evaluation of Insecticidal Activity of Plant Extracts against Three Insect Pests

식물추출물의 채소류 주요 해충에 대한 살충력 평가

  • Park, Jong-Ho (Organic Farming Technology Division, National Institute of Agricultural Science & Technology, Rural Development Administration) ;
  • Ryu, Kyung-Yul (Organic Farming Technology Division, National Institute of Agricultural Science & Technology, Rural Development Administration) ;
  • Jee, Hyeong-Jin (Organic Farming Technology Division, National Institute of Agricultural Science & Technology, Rural Development Administration) ;
  • Lee, Byung-Mo (Organic Farming Technology Division, National Institute of Agricultural Science & Technology, Rural Development Administration) ;
  • Gho, Hyeon-Gwan (Organic Farming Technology Division, National Institute of Agricultural Science & Technology, Rural Development Administration)
  • 박종호 (농촌진흥청 농업과학기술원 친환경농업과) ;
  • 류경열 (농촌진흥청 농업과학기술원 친환경농업과) ;
  • 지형진 (농촌진흥청 농업과학기술원 친환경농업과) ;
  • 이병모 (농촌진흥청 농업과학기술원 친환경농업과) ;
  • 고현관 (농촌진흥청 농업과학기술원 친환경농업과)
  • Published : 2008.03.30

Abstract

Insecticidal activity of 20 plant species against adults of Myzus persicae, female adults of Tetranychus urticae, and $2^{nd}\;or\;3^{rd}$ instar larvae of Plutella xylostella was evaluated in this study. Thirteen plant extracts showed over 80% acaricidal activity to T. urticae at the concentration of 1 %, while Capsicum annuum (hot-pepper seed), Inula helenium, and Acorus calamus revealed 82.8-86.2% acaricidal activities at 0.5%. Insecticidal activities of the plant extracts to M. persicae and P. xylostella were relatively low compare to the mite. Among the plant extracts, C. anuum and Brassica juncea revealed 48.6% and 42.9% respectively insecticidal activities to the aphid at the concentration of 0.5%. Extracts of C. anuum and Jeffersonia dubia provided 55% and 50% insecticidal activity against P. xylostella at 1%. And, the highest antifeeding activity of the insect was observed in the J. dubia extract as 79.4%. Results indicated that some plant extracts including hot pepper seed could be used as potential botanical pesticides for organic farming.

유기재배 농가에서 해충방제용으로 이용하거나 해충에 살충력이 보고된 식물추출물 20종을 점박이응애, 복숭아혹진딧물 및 배추좀나방에 대해 살비, 살충 효과를 검정하였다. 이들 중 13종의 식물추출물은 1% 농도에서 점박이응애에 대해 80%이상의 높은 살비력을 보였다. 그러나, 0.2% 농도에서는 모두 50% 미만의 살충율을 보였고, 0.5% 농도에서는 창포, 목향 및 고추씨 추출물이 각각 82.8%, 82.8%, 86.2%의 높은 살비력을 나타내었다. 복숭아혹진딧물에 대해서는 고추씨와 겨자 추출물이 0.5% 농도에서 48.6%와 42.9%로 가장 높은 살충력을 보였다. 배추좀나방의 경우 1% 농도에서 황련과 고추씨 추출물이 50%와 55%의 살충력을 보였고 나머지 추출물의 살충효과는 50% 미만으로 낮았다. 하지만 여러 식물추출물이 배추좀나방 유충의 섭식을 저해하는 효과를 보였으며 황련 추출물을 처리한 경우 유충의 섭식저해율이 79.4%로 가장 높았다. 본 실험을 통해 천연살충제로서 고추씨와 같이 사용이 용이한 식물체추출물이 유기농업에 이용 가능성이 있음을 확인할 수 있었다.

Keywords

References

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