Full TGIF Record # 83782
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Publication Type:
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Content Type:Abstract or Summary only
Author(s):Krutz, L. J.; Senseman, S. A.; Dozier, M. C.; Hoffman, D. W.; Tierney, D. P.
Author Affiliation:Krutz and Senseman: Department of Soil and Crop Sciences, Texas Agricultural Experiment Station, Texas A&M University System, College Station, Texas; Dozier: Department of Soil and Crop Sciences, Texas Cooperative Extension, Texas A&M University System, College Station, Texas; Hoffman: Blackland Research Center, Texas Agricultural Experiment Station, Texas A&M University System, Temple, Texas; and Tierney: Human & Environmental Safety Department, Syngenta Crop Protection, Greensboro, North Carolina
Title:Effectiveness of buffalograss [Buchloe dactyloides (Nutt. Engelm)] filter strips in removing dissolved atrazine and metabolites from surface runoff
Section:Research posters
Other records with the "Research posters" Section
Meeting Info.:55th Annual Meeting, Atlanta, GA: January 28-30, 2002
Source:Southern Weed Science Society Proceedings. Vol. 55, 2002, p. 189.
Publishing Information:Champaign, IL: Southern Weed Science Society.
# of Pages:1
Abstract/Contents:"Atrazine and atrazine metabolites differ substantially in adsorption and desorption behavior suggesting that retention differences among compounds within vegetative filter strips is likely. A micro-watershed runoff study was conducted to compare the simultaneous partitioning of atrazine, deethylatrazine, deisopropylatrazine, diamioatrazine, and hydroxyatrazine within a buffalograss filter strip. Runoff was introduced up slope of a 1 X 3 m watershed for 1 hr at a rate of 12.5 L min-1 and a concentration of 0.1 μg mL-1. After crossing the length of the plot, the runoff rate was determined, and water samples were collected at pre-determined-time intervals. Water samples were subjected to solid phase extraction, and the compounds were analyzed by high performance liquid chromatography-photodiode array detection. The total mass retained by the filter strip was determined for each compound and partitioned between infiltration and adsorption. The total atrazine mass retained within the filter strip (35 %) was significantly greater than the metabolite mass retained (32 %). The mean infiltration mass retained for al compounds was approximately 23 % and was not significantly different among compounds. Atrazine mass retained by adsorption to the grass thatch/soil surface (13 %) was significantly greater than the metabolite mass adsorbed (9 %). Buffalograss filter strips appear to preferentially retain atrazine as compared to the atrazine metabolites due to differences in the partitioning of the compounds among the solution, soil, and thatch."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Krutz, L. J., S. A. Senseman, M. C. Dozier, D. W. Hoffman, and D. P. Tierney. 2002. Effectiveness of buffalograss [Buchloe dactyloides (Nutt. Engelm)] filter strips in removing dissolved atrazine and metabolites from surface runoff. South. Weed Sci. Soc. Proc. 55:p. 189.
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MSU catalog number: SB 611 .S6 v.54
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