Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
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Effects of Pesticide (Fenitrothion) Application on Soil Organisms in Pine Stand

살충제(Fenitrothion) 살포가 소나무림의 토양생물에 미치는 영향

  • Kwon, Tae-Sung (Division Forest Ecology, Korea Forest Research Institute) ;
  • Kim, Kyung-Hee (Division of Forest Insest Pests and Disease, Korea Forest Research Institute) ;
  • Kim, Chul-Su (Division of Forest Insest Pests and Disease, Korea Forest Research Institute) ;
  • Lee, Jong-Hee (Park & Greenery Division, Seonzdong-gu office) ;
  • Yun, Chung-Weon (Division of Forest Resouces & Landscape Architecture, Kongju National University) ;
  • Hong, Yong (Institute of Agricultural Science, Sangju National University) ;
  • Kim, Jin-Tae (Korean Federation for Environmental Movements)
  • 권태성 (국립산림과학원 산림생태과) ;
  • 김경희 (국립산림과학원 산림병해충과) ;
  • 김철수 (국립산림과학원 산림병해충과) ;
  • 이종희 (성동구청 공원녹지과) ;
  • 윤충원 (공주대학교 산림자원학과) ;
  • 홍용 (상주대학교 응용생물자원학과) ;
  • 김진태 (전주환경운동연합)
  • Received : 2005.08.16
  • Accepted : 2005.09.09
  • Published : 2005.12.31
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Abstract

As the pine wilt disease spread rapidly over Korea in recent, aerial pesticide spraying to the infected pine stands increased abruptly. The increasing aerial pesticide application for control of the disease would result in disturbance of soil ecosystem in pine stands. This study was conducted to assess the disturbance, using field experiment in pine stands of Hongleong experimental forests in Seoul with BACI experimental design with three sprayed plots and three unsprayed plots of $25m^2$. We sprayed fenitrothion of 0.0335 kg a.i./ha over each of the sprayed plots, being the same as the pesticide residues of litters after aerial spraying. The pesticide had been applied on 4 June, 11 June, and 29 June in 2002, comparable with the dates of the aerial spraying in the previous year in Busan. We monitored population of soil organisms including arthropods, fungi, bacteria, and actinomycetes at two sampling days before pesticide application, at two sampling days during the application season, and at three sampling days after last application for two months since late May in 2002. The pesticide applications did not make any significant effect on the population of arthropods, fungi, bacteria, and actinomycetes in soils and on the structure of soil organism community, showing low probability of significant effects of the aerial pesticide application on soil organisms in pine stands.

피해가 급속히 확산중인 소나무재선충병 방제를 위해 항공방제를 실시하는 소나무림이 증가하면서, 항공방제시 농약침투로 인한 토양생태계 교란의 가능성이 제기되고 있다. 본 연구는 이러한 가능성을 평가하기 위해, 현지 외 야외실험을 BACI 실험설계하에 서울 홍릉시험림의 소나무림에서 면적 $25m^2$인 3개의 방제구와 3개의 대조구를 설치하여 실시하였다. 항공방제 약종인 fenitrothion을 항공방제직후 낙엽에서 검출된 잔류량인 0.0335 kg a.i/ha를 지면에 살포하였다. 농약살포는 2002년 6월 4일, 6월 11일, 6월 29일 3회에 걸쳐 실시하였는데, 살포일은 전년도 부산지역 항공방제일과 동일한 날짜로 선정하였다. 절족동물, 곰팡이, 세균, 방선균 등의 토양생물의 개체수 조사를 살포 전에 2회, 살포기간중에 2회, 마지막 살포후 3회 실시하였다. 살충제의 살포는 토양에 서식하는 절족동물, 곰팡이, 세균, 방선균의 개체수 변화와 이들 토양생물군집의 구조에 유의한 영향을 주지 않아. 항공방제가 소나무림의 토양생물에 큰 영향을 줄 가능성이 낮음을 나타내었다.

Keywords

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