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Evaluation of Insecticidal Activity of Plant Extracts against the Diamondback Moth, Plutella xylostella (Lepidoptera: Plutellidae) on Vegetable Plant

배추좀나방(Plutella xylostella)에 대한 식물추출물의 살충력 평가

  • Choi, I-Jin (Team of City Farm, Seoul Agricultural Technology Center) ;
  • Kwon, Hyuk-Hyun (Team of City Farm, Seoul Agricultural Technology Center) ;
  • Lee, Han-Ho (Team of City Farm, Seoul Agricultural Technology Center) ;
  • Son, Hyoung-Gi (Team of City Farm, Seoul Agricultural Technology Center) ;
  • Hong, Sang-Kil (Team of City Farm, Seoul Agricultural Technology Center) ;
  • Kang, Jong-Woon (Team of City Farm, Seoul Agricultural Technology Center) ;
  • Park, Yu-Soon (Team of City Farm, Seoul Agricultural Technology Center)
  • 최이진 (서울시 농업기술센터 도시농업팀) ;
  • 권혁현 (서울시 농업기술센터 도시농업팀) ;
  • 이한호 (서울시 농업기술센터 도시농업팀) ;
  • 손형기 (서울시 농업기술센터 도시농업팀) ;
  • 홍상길 (서울시 농업기술센터 도시농업팀) ;
  • 강종운 (서울시 농업기술센터 도시농업팀) ;
  • 박유순 (서울시 농업기술센터 도시농업팀)
  • Received : 2012.11.09
  • Accepted : 2013.02.14
  • Published : 2013.02.28

Abstract

This study focused on the usefulness of plant extracts for a city organic farm. Insecticidal activity of 8 plant species, plants crude extracts by ethanol and water, against third instar larvae (susceptible strain) of Plutella xylostella was evaluated in this study. Ethanol(25%) extracts of plant materials had better insecticidal activity than water extracts at the room temperature. Insecticidal activity were investigated by leaf disc spray method. Five plant extracts (Capsicum annuum, Chelidoniun majus, Leonurus sibiricus, Coptis japonica, Mentha piperascens) showed over 50% insecticidal activity to P. xylostella at the concentration of $1500mg{\cdot}L^{-1}$. Extract of C. annuum showed the highest insecticidal activity (83.3%) against P. xylostella. Phytotoxicity was not observed on Raphanus sativus and Brassica campestris with spray application. Seed germination and growth of two plants were not affected. Extract of C. japonica revealed 73.3% control efficacy against P. xylostella of R. sativus and showed 70% control efficacy against those of B. campestris, respectively, in plastic house. Insecticidal activity against various insects was observed in C. japonica extract as 87.4% for R. sativus and 74.3% for B. campestris in the field. These results suggested that extracts of C. annuum, C. japonica showed the highest insecticidal activity, and could be used as city farm insecticides for organic farming.

Keywords

Plutella xylostella;Coptis japonica;Plant extracts;Insecticidal activity

Acknowledgement

Supported by : 농촌진흥청

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  1. Evaluation of Insecticidal and Antifeeding Activities of Eco-friendly Organic Insecticides Against Agricultural Insect Pests vol.54, pp.2, 2015, https://doi.org/10.5656/KSAE.2015.05.0.020