Full TGIF Record # 82705
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Web URL(s):http://www.tandfonline.com/doi/pdf/10.1081/PFC-120014872
    Last checked: 10/09/2015
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Publication Type:
i
Report
Author(s):Kim, Jung-Ho; Feagley, Sam E.
Author Affiliation:Kim: Department of Environmental Science, Kyungsan University, Kyungsan, Korea; Feagley: Soil and Crop Science Department, Texas A & M University, College Station, TX
Title:Runoff of trifluralin, metolachlor, and metribuzin from a clay loam soil of Louisiana
Source:Journal of Environmental Science and Health: Part B: Pesticides, Food Contaminants, and Agricultural Wastes. Vol. B37, No. 5, September 2002, p. 405-415.
# of Pages:11
Publishing Information:New York: Marcel Dekker
Keywords:TIC Keywords: Trifluralin; Metolachlor; Metribuzin; Preemergence herbicides; Surface runoff; USEPA; Federal legislation; Water pollution; Leaching; Clay soils
Abstract/Contents:"Trifluralin[2,6-dinitro-N,N-dipropyl-4-(trifluormethyl)be< >nzenamine], metolachlor[2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-metho< >xy-1-methylethyl)acetamide] and metribuzin[4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,< >2,4-triazin-5(4H)one] were applied as pre-emergent herbicides to soybean plots in Louisiana (LA) at the rate of 1683 g/ha, 2759 g/ha, and 609 g/ha, respectively. The concentrations of trifluralin in the runoff water ranged between 0.09 ng/mL and 0.02 ng/mL, which is lower than the 2 ng/mL US Environmental Protection Agency (EPA) advisory level for trifluralin in drinking water. Metolachlor concentrations in the runoff water ranged from 9.0 ng/mL to 221.5 ng/mL, which is both lower and higher than the 175 ng/mL EPA advisory level for metolachlor. Similarly, metribuzin concentrations in the runoff water ranged from 1.5 ng/mL and 56.2 ng/mL, which is also lower and higher than the 10 ng/mL EPA advisory level for metribuzin. Accordingly, from the field plots located on a Commerce clay loam soil in LA, although the concentrations of trifluralin in runoff water were substantially lower than the EPA advisory level, metolachlor and metribuzin concentrations are likely to exceed the EPA advisory levels early on in the application season with a subsequent rapid decrease to safe levels. The total loss of trifluralin in runoff water was 0.005% of the applied amount over an 89 day period after application. The total loss of metolachlor and metribuzin in the runoff water was 4.67% and 5.36% of the applied amount, respectively, Over a 22 day period after application. As such, there was almost no movement of trifluralin in the runoff water, whereas metolachlor and metribuzin were much more easily moved."
Language:English
References:15
Note:Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Kim, J.-H., and S. E. Feagley. 2002. Runoff of trifluralin, metolachlor, and metribuzin from a clay loam soil of Louisiana. J. Environ. Sci. Health. B37(5):p. 405-415.
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http://www.tandfonline.com/doi/pdf/10.1081/PFC-120014872
    Last checked: 10/09/2015
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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