Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Adsorption and Degradation of Procymidone in Ginseng Cultivating Soils

인삼 재배토양에서의 Procymidone 흡착 및 분해

  • Published : 2002.12.31
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Abstract

This work has been conducted to investigate the behavior of pesticides in ginseng(Panax ginseng C. A. Meyer) cultivation environment, with a fungicide procymidone as a model pesticide. Procymidone adsorption on ginseng cultivating soil was studied and persistency of procymidone in soil was monitored in indoor incubation experiments at 25$^{\circ}C$ and 10$^{\circ}C$. The soil adsorption coefficients($K_{oc}$) of procymidone were in the range of 513$\sim$743 suggesting the mobility of procymidone in soil is relatively low. Procymidone showed higher persistency in soil under indoor incubation condition than outdoor field condition. The half lives estimated from the first order reaction kinetics were 248 days and 330 days at 25$^{\circ}C$ and 10$^{\circ}C$, respectively.

인삼재배환경에서의 농약의 동태를 구명하기 위하여 살균제 procymidone을 공시하여 인삼 재배토양을 대상으로 흡착실험을 수행하였다. 또한 procymidone을 처리한 인삼재배토양을 10$^{\circ}C$ 및 25$^{\circ}C$의 항온에서 배양하면서 토양중 잔류성을 조사하였다. 흡착실험을 통하여 구한 procymidone의 유기탄소기준 흡착분배계수($K_{oc}$)는 531$\sim$743 수준으로서 토양 중 procymidone의 이동성은 낮을 것으로 판단되었다. 실내 항온배양 실험결과로부터 계산된 procymidone의 반감기는 248일(25$^{\circ}C$) 및 330일(10$^{\circ}C$)로서 포장실험결과에 비해 현저히 길어졌으며, 이는 procymidone이 가수분해 또는 미생물에 의한 분해 등에 안정한 화합물임을 시사하였다.

Keywords

References

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