Full TGIF Record # 71295
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Web URL(s):http://www.tandfonline.com/doi/pdf/10.1080/03601239809373161
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Author(s):Kim, Jung-Ho; Feagley, S. E.
Author Affiliation:Kim: Department of Environmental Science, Kyungsan University, Kyungsan Korea; and Feagley: Soil and Crop Sciences Department, Texas A&M, College Station, Texas
Title:Adsorption and leaching of trifluralin, metolachlor, and metribuzin in a commerce soil
Source:Journal of Environmental Science and Health: Part B: Pesticides, Food Contaminants, and Agricultural Wastes. Vol. B33, No. 5, 1998, p. 529-546.
# of Pages:18
Publishing Information:New York: Marcel Dekker
Keywords:TIC Keywords: Adsorption; Leaching; Trifluralin; Metolachlor; Metribuzin; Herbicides; Desorption; Silt; Clay loam soils; Mathematical equations; Pesticide fate; Fate; Soil depth; Pesticide persistence
Abstract/Contents:"Trifluralin [2,6-dinitro-N,N-dipropyl-4- (trifluoromethyl)benzenamine], metolachlor [2-chloro-N-ethyl-6-methylphenyl)-N - (2-methoxy-1-methylethyl) accceta mide], and metribuzin [4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4 - triazin -5(4H)-one] were selected to study adsorption and leaching potentials related to pollution on Commerce silty clay loam soil near Baton Rouge, Louisiana. At a 1:10 soil/water ratio, the Koc values for trifluralin, metolachlor and metribuzin were 875, 135, and 96, respectively. Leaching of these herbicides was evaluated in soil columns (5.4 cm i.d. x 26 cm long). Total recoveries of the herbicides applied to the soild column were 73.1% ±4.1%. When the soil columns were leached with three pore volumes of water, the distributions of trifluralin in soil and leachate were 99.993% and 0.007% of the total recoveries, respectively. The distributions of metolachlor was 65.27% in soil and 34.7% in leachate. The distributions of metribuzin was 11.42% in soil and 88.58% in leachate. The results showed that metolachlor and metribuzin were readily leached, while trifluralin was strongly adsorbed to soil. Leaching of three herbicides in the soil column followed the leaching trends of their calculated leaching indices 1.41 x 10⁴, 4.18 x 10⁶, and 3.38 x 10⁸ for trifluralin, metolachlor, and metribuzin, respectively. The results of the study demonstrated the potential of pollution of metolachlor and metribuzin to be leached into the ground water in soils with shallow aquifer."
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Kim, J.-H., and S. E. Feagley. 1998. Adsorption and leaching of trifluralin, metolachlor, and metribuzin in a commerce soil. J. Environ. Sci. Health. B33(5):p. 529-546.
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    Last checked: 10/09/2015
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