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http://dx.doi.org/10.5338/KJEA.2006.25.4.297

Runoff and Erosion of Alachlor, Ethalfluralin, Ethoprophos and Pendimethalin from Soybean Field Lysimeter  

Kim, Chan-Sub (Pesticide Safety Division, National Institute of Agriculture Science and Technology, Rural Development Administration)
Lee, Hee-Dong (Pesticide Safety Division, National Institute of Agriculture Science and Technology, Rural Development Administration)
Oh, Byung-Youl (Pesticide Safety Division, National Institute of Agriculture Science and Technology, Rural Development Administration)
Lee, Young-Deuk (Division of Life and Environmental Science, Daegu University)
Publication Information
Korean Journal of Environmental Agriculture / v.25, no.4, 2006 , pp. 297-305 More about this Journal
Abstract
The field lysimeter experiment were undertaken to investigate the runoff and erosion loss of four pesticides from sloped land by rainfall and to assess the influence of pesticide properties, environmental factors and agricultural practices on them. The pesticide losses from soybean planted field and bare field were measured using field lysimeters. Pesticide losses from a series of lysimeter plots of sloped land by rainfall ranged $0.1{\sim}0.6%$ for alachlor, $1.1{\sim}4.5%$ for ethalfluralin, $8{\sim}31%$ for pendimethalin and 0.03% for ethoprophos, which were $1/3{\sim}2.5$ times to them in the simulated rainfall study. The erosion loss rates of pesticides from soybean-plots were $21{\sim}75%$ lower than the ones from bare soil plot. The effect of slope conditions was not great for runoff loss, but for erosion loss increased to maximum $4{\sim}12$ times by sloping degree and slope length. The peak runoff concentration in soybean-plots and bale soil plots were $3{\sim}278{\mu}gL^{-1}\;and\;6{\sim}450{\mu}gL^{-1}$ for alachlor, $1.1{\sim}11.4{\mu}gL^{-1}\;and\;0.9{\sim}16{\mu}gL^{-1}$ for ethalfluralin, $7{\sim}42{\mu}gL^{-1}\;and\;6{\sim}66{\mu}gL^{-1}$ for pendimethalin, and $2{\sim}53{\mu}gL^{-1}\;and\;0.1{\sim}113{\mu}gL^{-1}$ for ethoprophos, respectively, on nine different slope degree and slope length plots. Therefore, the differences of the peak runoff concentration between bare soil plots and soybean-plots were not great.
Keywords
pesticide; runoff; erosion; alachlor; ethalfluralin; ethoprophos; pendimethalin;
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Times Cited By KSCI : 4  (Citation Analysis)
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