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Runoff of Fluazinam Applied in Pepper Field-lysimeter

고추재배 포장 라이시메타를 이용한 fluazinam의 유출 평가

  • Kim, Chan-Sub (Department of Agro-Food Safety, National Academy of Agricultural Science, Rural Development Administration) ;
  • Ihm, Yang-Bin (Department of Agro-Food Safety, National Academy of Agricultural Science, Rural Development Administration) ;
  • Kwon, Hye-Young (Department of Agro-Food Safety, National Academy of Agricultural Science, Rural Development Administration) ;
  • Im, Geon-Jae (Department of Agro-Food Safety, National Academy of Agricultural Science, Rural Development Administration)
  • 김찬섭 (농촌진흥청 국립농업과학원 농산물안전성부) ;
  • 임양빈 (농촌진흥청 국립농업과학원 농산물안전성부) ;
  • 권혜영 (농촌진흥청 국립농업과학원 농산물안전성부) ;
  • 임건재 (농촌진흥청 국립농업과학원 농산물안전성부)
  • Received : 2013.11.04
  • Accepted : 2013.12.01
  • Published : 2013.12.31

Abstract

The field lysimeter study was undertaken to investigate influence of agricultural practice and topography on runoff and erosion loss of fluazinam from the sloped land grown pepper. The WP type formulation was applied on July in 2003~2005. The wash-off rates were from 1.4% to 8.4% of the applied fluazinam. The runoff losses of fluazinam from a series of pepper grown-lysimeter plots were 0.14~0.90% in the first year, 0.01~0.04% in the second year and 0.16~0.37% in the third year for the mulched contour ridge plots, 0.47~1.59% for the mulched up-down direction ridge plots and 0.07~1.05% for the no-mulched contour ridge plots as the control, and they increased with slope degree. Concentrations of fluazinam in runoff water ranged mostly to 10 ${\mu}gL^{-1}$ at the first runoff event. Erosion rates from plots except the mulched up-down direction ridge plots was 0.00~0.21% for 10% and 20% slope-plots and 0.15~1.05% for 30% slope-plots with different slope degrees. Erosion rates from the mulched up-down direction ridge plots were 0.47~1.59% for 10% slope-plots and 0.75~1.05% for 20% slope-plots. Residues of fluazinam in soil at ten days after the application ranged from 0.007 mg $kg^{-1}$ to 0.059 mg $kg^{-1}$ except the soil under the mulch. After then the fluazinam residue in soil was dissipated at the rate of 20 days of half-life to below 0.01 mg $kg^{-1}$ at 60 days after the application.

Acknowledgement

Supported by : 농촌진흥청

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