Biotechnology and Bioprocess Engineering:BBE

The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Biological Control of Tobacco Cutworm, Spodoptera litura Fabricius with Entomopathogenic Nematodes

  • Park, Sun-Ho (Faculty of Engineering, Keimyung University) ;
  • Yu, Yeon-Su (Faculty of Engineering, Keimyung University) ;
  • Park, Jae-Sung (Faculty of Engineering, Keimyung University) ;
  • Choo, Ho-Yul (Department of Agricultural Biology, Gyeongsang National University) ;
  • Bae, Soon-Do (National Yeongnam Agricultural Experiment Station, RDA) ;
  • Nam, Min-Hee (National Yeongnam Agricultural Experiment Station, RDA)
  • Published : 2001.03.01
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Abstract

The efficacies of several entomopathogenic nematodes of Steinernema and Heterorhabditis spp. were examined against tobacco cutworm, Spodoptera litura Fabricius. H. bacteriophora HY showed 100% mortality after 20 h against 2nd instar of tobacco cutworm. In the case of 3-4th instar, S. carpocapsae PC, H. bacteriophora HY and S. monticola CR showed 100% mortality after 47 h. In the case of 5-6th instar, S. carpocapsae PC proved more effective than the others. Generally, the number of nematodes harvested as their size decreased. Also, the highest number of nematodes was obtained in the 5-6th instar of S. litura by H. bacteriophora HY, showing about $1.3{\times}10^6$ nematodes per larva. In vitro cultured S. carpocapsae PC showed 100% mortality after 73 h against 5-6th instar tobacco cutworm, indicating that nematodes produced in vitro can be potentially used for the biological control of S. litura instead of nematodes in vivo.

Keywords

References

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