Journal of Asia-Pacific Entomology

Korean Society of Applied Entomology (한국응용곤충학회)
권호 표지

Nematicidal Activity of Plant Essential Oils against Bursaphelenchus xylophilus (Nematoda: Aphelenchoididae)

  • Kong Jung-Ok (School of Agricultural Biotechnology, Seoul National University) ;
  • Lee Sang-Myung (Southern Forest Research Institute, Korea Forest Research Institute) ;
  • Moon Yil-Seong (Southern Forest Research Institute, Korea Forest Research Institute) ;
  • Lee Sang-Gil (Southern Forest Research Institute, Korea Forest Research Institute) ;
  • Ahn Young-Joon (School of Agricultural Biotechnology, Seoul National University)
  • Published : 2006.06.01
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Abstract

The nematicidal activity and poisoning symptoms of 88 plant essential oils against Bursaphelenchus xylophilus were examined by an immersion bioassay. Results were compared with those of three trunk-injection nematicides: fenitrithion, levamisol hydrochloride, and morantel tartrate. As judged by 24 h $LC_{50}$ values, cinnamon bark oil (0.12 mg/ml) was the most effective nematicide, followed by coriander herb oil (0.14 mglml). Potent nematicidal activity was also observed with lemongrass, oregano, thyme red, and clove bud oils ($LC_{50}$, 0.57-0.88 mg/ml). Fenitrothion was ineffective ($LC_{50}$, >10 mg/ml). In typical poisoning symptoms in B. xylophilus, these essential oils exerted rapid nematicidal action and the nematodes killed usually showed an extended shape, whereas levamisole hydrochloride and morantel tartrate usually exhibited semicircular and coiling shapes, respectively. The essential oils described merit further study as botanical nematicides for the control of pine wilt disease caused by B. xylophilus.

Keywords

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