Full TGIF Record # 139103
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DOI:10.1081/CSS-100103904
Web URL(s):http://www.tandfonline.com/doi/full/10.1081/CSS-100103904
    Last checked: 11/21/2016
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http://www.tandfonline.com/doi/pdf/10.1081/CSS-100103904
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Publication Type:
i
Report
Author(s):Seybold, Cathy; Mersie, Wondi; Delorem, Don
Author Affiliation:Seybold: United States Department of Agriculture - Natural Resource Conservation Service, Oregon State University, Corvallis, Oregon; Mersie: Agricultural Research Station, Virginia State University, Petersburg, Virginia; Delorem: Virginia Department of Agriculture and Consumer Services, Richmond, Virginia
Title:Removal and degradation of atrazine and metolachlor by vegetative filter strips on clay loam soil
Source:Communications in Soil Science and Plant Analysis. Vol. 32, No. 5/6, April 2001, p. 723-737.
# of Pages:15
Publishing Information:New York, NY: Marcel Dekker
Related Web URL:http://www.tandfonline.com/doi/figure/10.1081/CSS-100103904?scroll=top&needAccess=true
    Last checked: 11/21/2016
    Notes: Figures and tables only
http://www.tandfonline.com/doi/abstract/10.1081/CSS-100103904
    Last checked: 12/15/2016
    Notes: Abstract only
Keywords:TIC Keywords: Atrazine; Metolachlor; Filter strips; Surface runoff; Runoff control; Herbicide safety; Infiltration; Water pollution; Clay loam soils; Soil analysis; Sampling; Panicum virgatum; Leaching; Temperatures
Abstract/Contents:"The effectiveness of filter strips, with and without vegetation, in removing dissolved atrazine and metolachlor in runoff was investigated using aluminum tilted beds set at 1% slope on Cullen clay loam soil. Runon containing atrazine and metolachlor was applied on the up-slope end of the simulated filter strips. Water samples from surface runoff, lateral subsurface movement, and leachates as well as filter strip soil samples were collected and herbicide concentrations determined. The filter strips reduced the amount of dissolved atrazine and metolachlor in runoff by about 6% of the amount applied. The absence or presence of switchgrass did not affect the amount of herbicide filtered. About 56 to 82% of the runon volume leached through the 30-cm soil depth of the filter strips. In the leachate, about 72 to 88% of the amount of applied herbicide was filtered or absorbed to the soil. The presence of switchgrass reduced the amount of runoff volume and increased the amount of leachate volume. In total, about 53 to 73% of the amount of herbicide applied was removed by the filter strips. The primary mode of dissolved herbicide removal in applied runon was infiltration and soil adsorption mechanisms. Soil herbicide concentrations were greatest at the 0 to 10 cm depth, decreased to less than 50 Ī¼g kg-1 over a 7-week period. In the filter strip soil, the presence of switchgrass significantly increased the degradation rate of metolachlor, but not atrazine. Infiltration of runoff into the filter strips is key to reducing dissolved herbicides from moving offsite. The presence of surface connected macropores is important in facilitating this process on heavier textured soils."
Language:English
References:47
Note:Figures
Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Seybold, C., W. Mersie, and D. Delorem. 2001. Removal and degradation of atrazine and metolachlor by vegetative filter strips on clay loam soil. Commun. Soil. Sci. Plant Anal. 32(5/6):p. 723-737.
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DOI: 10.1081/CSS-100103904
Web URL(s):
http://www.tandfonline.com/doi/full/10.1081/CSS-100103904
    Last checked: 11/21/2016
    Access conditions: Item is within a limited-access website
http://www.tandfonline.com/doi/pdf/10.1081/CSS-100103904
    Last checked: 11/21/2016
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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