Weed & Turfgrass Science

The Korean Society of Weed Science & The Turfgrass Society of Korea Archive (한국잡초학회 & 한국잔디학회)
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Evaluation of Entomopathogenic Nematodes against Armyworm, Pseudaletia separata on Tall Fescue, Festuca arundinacea

톨페스큐에서 곤충병원성선충의 멸강나방에 대한 효과 검정

  • Jung, Young Hak (Department of Applied Biology, Institute of Agriculture and Life Sciences, Gyeongsang National University) ;
  • Kim, Jong Ju (Department of Applied Biology, Institute of Agriculture and Life Sciences, Gyeongsang National University) ;
  • You, Eun Ju (Department of Applied Biology, Institute of Agriculture and Life Sciences, Gyeongsang National University) ;
  • Lee, Chae Min (Department of Ecological Science, Kyungpook National University) ;
  • Choo, Ho Yul (Department of Applied Biology, Institute of Agriculture and Life Sciences, Gyeongsang National University) ;
  • Lee, Dong Woon (Department of Ecological Science, Kyungpook National University)
  • 정영학 (경상대학교 생물응용학과, 농업생명과학연구원) ;
  • 김종주 (경상대학교 생물응용학과, 농업생명과학연구원) ;
  • 유은주 (경상대학교 생물응용학과, 농업생명과학연구원) ;
  • 이채민 (경북대학교 생태과학과) ;
  • 추호렬 (경상대학교 생물응용학과, 농업생명과학연구원) ;
  • 이동운 (경북대학교 생태과학과)
  • Received : 2013.08.27
  • Accepted : 2013.09.05
  • Published : 2013.09.30
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Abstract

The armyworm, Pseudaletia separata was occurred suddenly in a golf club in Namhae, Gyeongnam province in 2013. Thus, pathogenicity of seven species of entomopathogenic nematodes (Steinernema carpocapsae GSN1 strain, S. glaseri Dongrae strain, S. longicaudum Nonsan strain, S. monticolum Jiri strain and S. siamkayai, Heterorhabditis sp. Gyeongsan strain, and H. bacteriophora Hamyang strain) was evaluated against armyworm on tall fescue in pot and golf course to control this pest environmentally friendly. The pathogenicity against P. separata larvae was significantly different depending on nematode species. The corrected mortality of fifth instar of P. separata was 100% in the treatment with S. carpocapsae GSN1 in 7 days in tall fescue pot. However, there was not different in the mortality of fifth instar of P. separata (80 to 100%) at the rate of 385 to 6,160 infective juveniles (Ijs) ($=2.5{\times}10^2$ to $4{\times}10^5Ijs/m^2$) of S. carpocapsae GSN1 strain in each pot. Corrected mortality of P. separata was 65 and 60% at the rate of $10^5Ijs/m^2$ of S. carpocapsae GSN1 and S. longicaudum Nonsan strain, respectively in the tall fescue of golf course.

2013년 경남 남해에 소재하고 있는 골프장의 톨페스큐(Festuca arundinacea)에서 돌발적으로 발생한 멸강나방(Pseudaletia separata)의 친환경 방제를 위하여 톨페스큐에서 7종의 곤충병원성 선충(Steinernema carpocapsae GSN1 strain, S. glaseri Dongrae strain, S. longicaudum Nonsan strain, S. monticolum Jiri strain, S. siamkayai, Heterorhabditis sp. Gyeongsan strain, H. bacteriophora Hamyang strain)을 이용한 효과를 실내 pot와 야외의 발생 골프장에서 검정하였다. 그 결과, 멸강나방에 대한 효과는 곤충병원성 선충의 종에 따라 차이가 있었다. Pot에서 S. carpocapsae GSN1 계통은 멸강나방 5령충에 대하여 100%의 치사율을 보였다. 그리고 각 pot에 처리한 385마리-6,160마리 농도($=2.5{\times}10^2-4{\times}10^5$ 마리/$m^2$)에서는 농도에 따른 차이가 없었다(치사율 80-100%). 골프장의 톨페스큐 포장에서는 S. carpocapsae GSN1 계통과 S. longicaudum Nonsan 계통 처리에서 각각 65%와 60%의 보정사충율을 나타내었다.

Keywords

References

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