Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Control efficacy of two nematicides against southern root-knot nematode in a cucumber greenhouse during the fallow period in winter

동계 휴경기간 살선충제 처리에 따른 오이 시설재배지의 고구마뿌리혹선충 방제 효과

  • Hyoung-Rai Ko (Crop Protection Division, National Institute of Agricultural Sciences, RDA) ;
  • Sekeun Park (Crop Protection Division, National Institute of Agricultural Sciences, RDA) ;
  • Natesan Karthi (Crop Protection Division, National Institute of Agricultural Sciences, RDA) ;
  • Byeong-Yong Park (Crop Protection Division, National Institute of Agricultural Sciences, RDA)
  • 고형래 (국립농업과학원 작물보호과) ;
  • 박세근 (국립농업과학원 작물보호과) ;
  • 네이트산 카르시 (국립농업과학원 작물보호과) ;
  • 박병용 (국립농업과학원 작물보호과)
  • Received : 2023.11.07
  • Accepted : 2023.11.27
  • Published : 2023.12.31
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Abstract

Southern root-knot nematode (SRKN, Meloidogyne incognita) is known to be responsible for annual economic losses of 38.2 million USD in cucumber cultivation in Korea. Nematicides are frequently used to manage SRKN in plastic greenhouses. A field experiment was conducted to assess the effect of a soil fumigant (dimethyl disulfide, DMDS) and a non-fumigant (fluopyram, FL) against SRKN during the winter fallow season in a greenhouse from October to December. Nematicidal efficacy was assessed at 43 days after treatment, and the root gall index was measured 4 months after transplanting cucumber seedlings. DMDS effectively reduced second-stage SRKN juvenile density with 91% control efficacy, while FL showed no control efficacy against SRKN. Root gall index values were significantly different(p=0.020) in DMDS treatment and controls at 1.0±0.00 and 4.3±0.58, respectively. This study showed that DMDS could be considered an effective nematicide for controlling SRKN in the fallow period in winter.

고구마뿌리혹선충(Meloidogyne incognita)은 국내 오이 재배지에서 문제되고 있는 식물기생선충으로 연간 500억원의 경제적 피해를 일으키고 있다. 국내에서는 시설재배지 문제 고구마뿌리혹선충의 방제를 위해 화학적 살선충제를 주로 이용하고 있다. 본 연구는 겨울철 휴경기 화학적 살선충제를 이용하여 오이 시설재배지에 문제되고 있는 고구마뿌리혹선충의 사전 방제 효과를 확인하기 위해 수행하였다. 2022년 10월부터 12월, 전북 장수군 천천면 소재 오이 비닐하우스에서 훈증성 살선충제인 디메틸디설파이드(dimethyl disulfide, DMDS)와 비훈증성 살선충제인 플루오피람(fluopyram, FL)을 처리하여 고구마뿌리혹선충 방제 효과를 검정하였다. 살선충제의 방제 효과는 약제처리 43일 경과 후 평가하였으며, 오이의 뿌리혹지수는 정식 4개월 후 평가하였다. 그 결과, DMDS는 고구마뿌리혹선충에 대한 91%의 방제 효과를 보였으나, 플루오피람은 방제 효과가 없었다. 뿌리혹지수는 무처리(4.3±0.58) 대비 DMDS 처리구(1.0±0.00)에서 현저히 낮았으며 통계적으로 유의미한 차이를 보였다(p=0.020). 연구 결과에 따라 DMDS는 겨울철 휴경하는 오이 시설재배 작형의 고구마뿌리혹선충 방제에 효과적인 살선충제로 판단된다.

Keywords

Acknowledgement

This research was supported by a grant(Project No. RS-2022-RD010213) from Rural Development Administration, Republic of Korea.

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