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식물추출물의 채소류 주요 해충에 대한 살충력 평가

Evaluation of Insecticidal Activity of Plant Extracts against Three Insect Pests

  • 박종호 (농촌진흥청 농업과학기술원 친환경농업과) ;
  • 류경열 (농촌진흥청 농업과학기술원 친환경농업과) ;
  • 지형진 (농촌진흥청 농업과학기술원 친환경농업과) ;
  • 이병모 (농촌진흥청 농업과학기술원 친환경농업과) ;
  • 고현관 (농촌진흥청 농업과학기술원 친환경농업과)
  • 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)
  • 발행 : 2008.03.30

초록

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.

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.

키워드

참고문헌

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