DOI: 10.1081/CSS-100103904 Web URL(s): http://www.tandfonline.com/doi/full/10.1081/CSS-100103904 http://www.tandfonline.com/doi/pdf/10.1081/CSS-100103904 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 http://www.tandfonline.com/doi/abstract/10.1081/CSS-100103904 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 μg 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 ASA/CSSA/SSSA Citation (Crop Science -Like - may be incomplete ): Commun. Soil. Sci. Plant Anal. 32(5/6):p. 723-737.Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=139103 If there are problems with this record, send us feedback about record 139103 . Choices for finding the above item : DOI: 10.1081/CSS-100103904 Web URL(s): http://www.tandfonline.com/doi/full/10.1081/CSS-100103904 http://www.tandfonline.com/doi/pdf/10.1081/CSS-100103904 b2211306a Find from within TIC: Request through your local library's inter-library loan service (bring or send a copy of this TGIF record)
