Korean Journal of Agricultural Science (농업과학연구)

Institute of Agricultural Science, CNU (충남대학교 농업과학연구소)
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Phytotoxicity of imazosulfuron+fentrazamide in different cultivation type of rice

Imazosulfuron+fentrazamide 혼합제의 재배양식에 따른 벼의 약해

  • Won, OK Jae (Department of Crop Science, Chungnam National University) ;
  • Kang, Kwang Sik (Dongbangageo, Technical Research Institute) ;
  • Park, Su Hyuk (Department of Crop Science, Chungnam National University) ;
  • Eom, Min Yong (Department of Crop Science, Chungnam National University) ;
  • Hwang, Ki Seon (Department of Crop Science, Chungnam National University) ;
  • Suh, Su Jeong (Department of Crop Science, Chungnam National University) ;
  • Pyon, Jong Yeong (ReSEAT Program, Korea Institute of Science and Technology Information) ;
  • Park, Kee Woong (Department of Crop Science, Chungnam National University)
  • 원옥재 (충남대학교 식물자원학과) ;
  • 강광식 ((주)동방아그로 기술연구소) ;
  • 박수혁 (충남대학교 식물자원학과) ;
  • 엄민용 (충남대학교 식물자원학과) ;
  • 황기선 (충남대학교 식물자원학과) ;
  • 서수정 (충남대학교 식물자원학과) ;
  • 변종영 (한국과학기술정보연구원) ;
  • 박기웅 (충남대학교 식물자원학과)
  • Received : 2014.06.02
  • Accepted : 2014.08.13
  • Published : 2015.03.31
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Abstract

This study was conducted to evaluate the phytotoxicity of imazosulfuron+fentrazamide mixture in rice field. It is recommended that safe herbicide application was obtained at 3 cm of transplanting depth and in sandy loam or loam soil type. In the direct water seeding of rice, imazosulfuron+fentrazamide SC should be applied at least 10 days before sowing land ower than 25+100 g ai/ha. In case of imazosulfuron+fentrazamide SC application after sowing, If we use the herbicide 15 days after sowing, no herbicide symptoms will be detected even though the amounts of the herbicide increase. In the rice transplanting, it is recommended that imazosulfuron+fentrazamide GR is applied 5 days after transplanting. In case of sequential herbicide application, the imazosulfuron+fentrazamide SC application at 75+300 g ai/ha 15 or 20 days after transplanting after the application at 25+100 g ai/ha or 50+200 g ai/ha 3 days before sowing increases weed control efficacy and gives no phytotoxicity in the rice growth.

본 실험은 imazosulfuron+fentrazamide 혼합제가 벼의 생육에 미치는 영향을 알아보고자 수행하였다. Imazosulfuron+fentrazamide SC 처리 시 벼의 이앙심도는 3 cm 이상, 사질양토나 식양토를 이용하는 것이 바람직하다. 담수직파 재배의 경우 imazosulfuron+fentrazamide SC의 파종 전처리는 25+100 g ai/ha로 적어도 파종 10일 전에 처리하며, 파종후 처리에서는 약량이 증가하여도 파종 15일 이후에 처리하면 약해를 나타내지 않을 것으로 판단된다. 기계이앙 재배의 경우 imazosulfuron+fentrazamide GR의 약량에 따른 약해는 보이지 않으나 이앙 5일 후 처리하여야 벼 생육에 안전할 것으로 판단된다. 체계처리의 경우 파종 3일 전 25+100 g ai/ha이나 50+200 g ai/ha으로 처리한 후 이앙 15일 또는 20일에 75+300 g ai/ha로 처리할 경우 잡초방제의 효과를 높이고 벼 생육에는 안전한 방법으로 사료된다.

Keywords

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