The Korean Journal of Pesticide Science (농약과학회지)

The Korean Society of Pesticide Science (한국농약과학회)
권호 표지

Rapid diagnosis and control of sulfonylurea resistant Monochoria korsakowii

Sulfonylurea계 제초제 저항성 물옥잠의 조기진단과 방제

  • Park, Tae-Seon (Department of Agricultural Biology, National Institute of Agricultural Science and Technology, RDA) ;
  • Moon, Byeong-Chul (Department of Agricultural Biology, National Institute of Agricultural Science and Technology, RDA) ;
  • Cho, Jeong-Rae (Department of Agricultural Biology, National Institute of Agricultural Science and Technology, RDA) ;
  • Kim, Chang-Suk (Department of Agricultural Biology, National Institute of Agricultural Science and Technology, RDA) ;
  • Kim, Moo-Sung (College of Life Science & Center for Oriental Medicinal Materials and Processing, Kyunghee University) ;
  • Kim, Kil-Ung (Dept. of Agronomy, College of Agriculture, Kyungpook National University)
  • 박태선 (농업과학기술원 농업생물부) ;
  • 문병철 (농업과학기술원 농업생물부) ;
  • 조정래 (농업과학기술원 농업생물부) ;
  • 김창석 (농업과학기술원 농업생물부) ;
  • 김무성 (경희대학교 생명과학대학) ;
  • 김길웅 (경북대학교 농업생명과학대학)
  • Published : 2004.03.30
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Abstract

Sulfonylurea(SU)-resistant Monochoria korsakowii has resently been found in rice fields in Korea. A quick, practical and accurate test of confirming herbicide resistance is necessary to take timely management decision. This article describes a rapid reliable assay to detect SU-resistant biotype of Monochoria korsakowii. Up to now, the resistance to SU has been usually checked by application seedlings with herbicide. This application technique is time consuming and not practical. Therefore, we have developed efficient, rapid and practical diagnosis which allow easy detection of the SU-resistant Monochoria korsakowii by survival rate and regenerated plant length to herbicide application after cutting plants $0.5\sim1cm$ from the planted surface. This new rapid diagnosis can determine the SU resistance of the Monochoria korsakowii within 7 days at least. If the resistance of Monochoria korsakowii is identified by the rapid diagnosis, the selection of herbicide according to the stages of plants for the effective control is very important. The resistant biotype which treated with SU herbicide-based mixtures survived from the fields could effectively be controlled by soil application of butachlor+pyrazolate GR or by foliar application of the mixtures of bentazone SL and 2,4-D SL.

Sulfonylurea(SU)계 제초제에 대한 저항성 물옥잠이 최근 한국에서 발생되고 있는데, 저항성 물옥잠 을 시기적절하게 효과적으로 방제하기 위해서는 신속 정확하고 실용적인 조기진단법 개발이 매우 중요하다. 지금까지 제초제 저항성 검증은 종자를 파종하여 어린식물에 제초제를 살포하는 방법을 사용하였으나 이러한 방법은 많은 시간이 소요될 뿐만 아니라 비실용적이다. 그러나 본 연구는 지표로부터 $1\sim2cm$에서 식물체를 절단한 다음 제초제를 처리하여 식물체의 생존율과 재생된 초장에 의하여 저항성을 검증하는 신속 정확한 새로운 방법이다. 이 새로운 조기진단법에 의하여 SU계 제초제 저항성 물옥잠은 적어도 7일 이내 저항성 검증이 가능하였다. 제초제 저항성이 진단되면 잡초를 효과적으로 방제하기 위해서는 식물 생육 단계에 맞는 제초제를 선발하는 것이 매우 중요하다. SU계 혼합 제초제 처리 후 생존한 저항성 물옥잠은 butachlor+pyrazolate 입제나 bentazone 액제와 2,4-D 액제를 혼용하여 처리하는 것이 효과적이었다.

Keywords

References

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