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Environmental Behavior of Fenarimol, Chlorothalonil, and Ethoprophos in Agroforesty Field

산림농업지대에서 fenarimol, chlorothalonil 그리고 ethoprophos의 행방

  • Kim, Eun-Hyeok (Department of Bio-environmental Chemistry, Chonbuk National University) ;
  • Cho, Ki-Young (Department of Bio-environmental Chemistry, Chonbuk National University) ;
  • Cho, Jae-Young (Department of Bio-environmental Chemistry, Chonbuk National University)
  • Received : 2014.06.01
  • Accepted : 2014.07.11
  • Published : 2014.12.31

Abstract

Fate of fenarimol, chlorothalinol, and ethoprophos sprayed to control disease and pest was studied in a agroforest culture field of Jangsu-gun, Jeollabuk-do, Korea. Concentrations of fenarimol, chlorothalinol, and ethoprophos in runoff water ranged mostly to 0.2 mg/L at the first rainfall-runoff event. And then was rapidly decreased than detection limit at 60 days after the application. The fenarimol and chlorothalonil residue in soil was dissipated to below detection limit at 30 days after the application. But ethoprophos was decreased to below detection limit at 135 days after the application. The concentrations of experimental pesticides were highly detected in agroforest culture field than in open culture field. It is assumed that experimental pesticides were strongly adsorbed by organic matter such as fulvic acid and humic acid.

본 연구에서는 최근 산림소득작물로 재배면적이 급증하고 있는 오미자를 대상으로 일반 농경지와 산림농업지에 살포된 3종의 농약을 대상으로 행방을 비교 평가하였다. 농약살포후 초기 유출수에서만 미량으로 농약성분이 검출되었을 뿐 그 외의 유출수에서는 검출한계미만 수준으로 농약성분이 검출되었다. 토양 중 fenarimol과 chlorothalonil은 처리후 30일째부터 검출한계 미만으로 나타났으나, ethoprophos는 처리후 135일째부터 검출한계 미만으로 나타났다. 수확한 오미자 생재를 대상으로 fenarimol, chlorothalinol, 및 ethoprophos의 오미자 작물에 대한 잔류 정도를 조사한 결과, 조사대상 3종의 농약 모두 검출한계 미만으로 검출되었다. 일반 농경지 보다 산림농업재배지에서 토양중 잔류량이 더 높게 나타난 것은 100% 수광조건인 일반 농경지에 비해 90% 울폐도를 가진 산림농업 재배지에서 광분해도가 더 낮았던 점 그리고 농약성분이 산림농업지에서 비교적 풍부한 fulvic acid와 humic acid와의 흡착량이 더 많았기 때문으로 추정된다.

Keywords

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