Korean Journal of Agricultural Science (농업과학연구)

Institute of Agricultural Science, CNU (충남대학교 농업과학연구소)
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Effects of formulation types and application timing of benzobicyclon-mixture on weed control and phytotoxicity of rice

Benzobicyclon 혼합제의 제형 및 처리시기가 제초활성 및 벼 생육에 미치는 영향

  • Won, Ok Jae (Department of Crop Science, Chungnam National University) ;
  • Jeong, Jong Hee (Hankooksamgong Agricultural Research Center) ;
  • Song, Jae Eun (Hankooksamgong Agricultural Research Center) ;
  • Park, Su Hyuk (Department of Crop Science, Chungnam National University) ;
  • Hwang, Ki Seon (Department of Crop Science, Chungnam National University) ;
  • Han, Sung Min (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) ;
  • 정종휘 (한국삼공(주) 농업연구소) ;
  • 송재은 (한국삼공(주) 농업연구소) ;
  • 박수혁 (충남대학교 식물자원학과) ;
  • 황기선 (충남대학교 식물자원학과) ;
  • 한성민 (충남대학교 식물자원학과) ;
  • 변종영 (한국과학기술정보연구원) ;
  • 박기웅 (충남대학교 식물자원학과)
  • Received : 2013.12.02
  • Accepted : 2013.12.23
  • Published : 2013.12.31
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Abstract

This study was conducted to evaluate the efficacy of two different formulations and application timings of benzobicyclon+penoxsulam+pyrzaosulfuron-ethyl (BPP) in rice field. BPP granule (GR) and tablet (TB) controlled more than 90% of four weed species 10 and 15 days after sowing in direct seeding when compared with untreated control. BPP TB was highly effective to control herbicide resistant Scirpus juncoides and Monochoria vaginalis both 10 and 15 days after transplanting (DAT). BPP GR controlled 94.0 and 96.5% of S. juncoides and M. vaginalis, respectively 10 DAT, but its efficacy decreased to 88.5 and 49.8% respectively 15 DAT. When compared with untreated control, no visual injuries were detected at 255 and 510 g a.i./ha of BPP. The yield of rice increased in both BPP GR and TB in transplanting and direct seeding rice cultivation when compared with untreated control. Based on these data, early application (10 DAT) of BPP GR and TB can be applied to provide effective weed control, especially in the field infested with herbicide resistant weed species.

Keywords

References

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