Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Effect of Cyclosulfamuron on Rice Growth and Acetolactate Synthase Activity

Cyclosulfamuron이 벼의 생육과 Acetolactate Synthase 활성에 미치는 영향

  • 지승환 (대구대학교 생명자원학부) ;
  • 송성도 (한국바스프 아그로㈜) ;
  • 정병룡 (대구대학교 생명자원학부)
  • Published : 2003.03.31
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Abstract

Cyclosulfamuron a herbicide of sulfonylurea type, is a relatively new compound which control broad leaves and perennial weeds in rice field. However, this herbicide has a minor disadvantage of decreasing rice plant growth, especially in early growth stage. Therefore, far introducing this cyclosulfamuron as a herbicide in rice field, it is important to minimize the suppression of early plant growth with maintaining weed control efficacy. This study was conducted to evaluate effects of cyclosulfamuron early plant growth and acetolactate synthase activity of rice (Oryza sativa cv Dongjinbyeo, Hwasungbyeo, Ilpumbyeo). Rice growth was inhibited by cyclosulfamuron in their early growth stage. The concentrations required far 50% inhibition of Dongjinbyeo, Hwasungbyeo and Ilpumbyeo growth were 6.3, 9.2 and 146.mg/kg, respectively. Inhibition effect of cyclosulfamuron on the root elongation was greater than the effect on the shoot growth. Concentrations required far 50% inhibition of acetolactate synthase activity from Dongjinbyeo, Hwasungbyeo, Ilpumbyeo were 42.7, 32.7 and $56.7\;{\mu}M$, respectively.

토양혼화실험을 통한 초장의 신장 억제를 조사한 결과 초장이 50% 억제되었을 때의 cyclosulfamuron의 농도를 품종별로 비교하여 보면 동진벼, 화성벼, 일품벼의 경우 각각 6.3, 9.2 146.8 mg/kg으로 동진벼가 제초제 cyclosulfamuron에 가장 민감하게 지상부의 생육이 억제되었다. 또한 cyclosulfamuron은 동일한 농도에서 지상부보다는 지하부의 생육을 더 크게 억제하였으며, 0.3mg/kg 처리 수준에서 동진벼의 경우 건물중의 억제정도는 지상부가 4.8% 정도이었으나 지하부는 38.9%이었다. 벼의 acetolactae synthase 활성을 cyclosulfamuron의 농도별로 검정한 결과 공시된 품종간에 큰 차이가 없었으며 50% 억제되는 농도는 화성벼, 동진벼 및 일품벼의 경우 각각 42.7, 32.7 및 $56.7\;{\mu}M$이었다.

Keywords

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