Korean Journal of Weed Science (한국잡초학회지)

The Korean Society of Weed Science & The Turfgrass Society of Korea Archive (한국잡초학회 & 한국잔디학회)
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Herbicidal Activity of New Rice Herbicide Pyrimisulfan+Mefenacet SC against Sulfonlurea-Resistant Sea Club Rush (Scirpus planiculmis)

설포닐우레아계 제초제 저항성 새섬매자기에 대한 신규 제초제 Pyrimisulfan+Mefenacet SC의 약제방제 효과

  • 박민식 (바이엘 크롭사이언스 연구소) ;
  • 박용석 (바이엘 크롭사이언스 연구소) ;
  • 김성민 (바이엘 크롭사이언스 연구소) ;
  • 이정득 (바이엘 크롭사이언스 연구소)
  • Received : 2011.06.07
  • Accepted : 2011.06.17
  • Published : 2011.06.30
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Abstract

This study was conducted to investigate the herbicidal activity against Scirpus planiculmis (SCPPL) which has been reported as resistant biotype on sulfonylurea (SU) herbicides at the west coast reclaimed area first and proliferated continuously at Hwasung and Pyeongtaek in Gyeonggi province, and some Chungnam province. In order to investigate resistance breakability against SCPPL, new rice herbicides containing tefuryltrione [p-hydrophenyl pyruvate dioxygenase (HPPD) inhibitor], pyrimisulfan and triafamone[actolactate synthethase (ALS) inhibitor] were tested. In both lab and field experiments, tefuryltrione GR, 4-HPPD inhibitor showed growth retardation with a bleaching on the young leaves of SCPPL at early time after treatment. However, it restored and regerminated with insufficient control effect. On the other hand, pyrimisulfan+mefenacet SC, triafamone+tefuryltrione GR, and ALS inhibitor showed excellent control effect on SU-resistant SCPPL with growth retardation and necrosis. In particular, pyrimisulfan+mefenacet SC showed excellent controlling effect on SU-resistant SCPPL in regional field experiments.

서해안 간척지대를 중심으로 최근에는 경기, 충청 지역까지도 문제가 되고 있는 다년생의 난방제 잡초인 SU계 제초제 저항성 새섬매자기에 대하여 pyrimisulfan+mefenacet SC, triafamone+tefuryltrione GR와 HPPD 저해제인 tefuryltrione GR를 SU계 제초제인 pyriminobac-methyl+pyrazosulfuron-ethyl GR와 대조약제로 하여 온실과 포장에서 확인하였다. 생육기의 새섬매자기에 대해서 온실 및 포장조건에서 pyrimisulfan+mefenacet SC와 triafamone+tefuryltrione GR은 SU계 제초제 저항성 새섬매자기에 대해 95% 이상의 방제효과를 보여주었다. 두 약제에 의해 새섬매자기는 생육이 억제되어 갈변, 괴사하였다. Tefuryltrione GR는 생육 초기에는 새섬매자기에 대해서 80% 내외의 약효와 백화 증상을 확인할 수 있었으나, 재생 및 후발아하는 새섬매자기에 대해서는 방제효과가 68%로 떨어졌다. 경기 김포, 평택, 충남 당진, 서산, 전남 해남 지역 등의 새섬매자기 다발생 지역에서도 pyrimisulfan+mefenacet SC는 발생 초기의 새섬매자기는 물론 생육기의 새섬매자기에 대해서도 우수한 방제효과를 보였다.

Keywords

References

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