Full TGIF Record # 69540
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DOI:10.1002/1526-4998(200010)56:10<909::AID-PS227>3.0.CO;2-5
Web URL(s):http://onlinelibrary.wiley.com/doi/10.1002/1526-4998(200010)56:10<909::AID-PS227>3.0.CO;2-5/full
    Last checked: 03/14/2014
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http://onlinelibrary.wiley.com/doi/10.1002/1526-4998(200010)56:10<909::AID-PS227>3.0.CO;2-5/pdf
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Publication Type:
i
Refereed
Author(s):de Jonge, Hubert; de Jonge, Lis W.; Jacobsen, Ole H.
Author Affiliation:Danish Institute of Agricultural Sciences, Department of Crop Physiology and Soil Science, Tjele, Denmark
Title:[14C]Glyphosate transport in undisturbed topsoil columns
Source:Pest Management Science. Vol. 56, No. 10, October 2000, p. 909-915.
Publishing Information:London : for the Society of Chemical Industry by John Wiley & Sons
# of Pages:7
Related Web URL:http://onlinelibrary.wiley.com/doi/10.1002/1526-4998(200010)56:10<909::AID-PS227>3.0.CO;2-5/abstract
    Last checked: 03/14/2014
Keywords:TIC Keywords: Glyphosate; Transport (chemical); Topsoil; Transport processes in soil systems; Movement in soil; Carbon; Bromide; Herbicides; Fate; Sorption; Soil pH; Phosphorus; Colloids; Sandy loam soils; Sandy soils; Comparisons; Leaching; Pesticide fate; Application methods; Irrigation; Watering-in; Electrical conductivity
Abstract/Contents:"Although glyphosate (N-(phosphonomethyl)glycine) is one of the most frequently used herbicides, few controlled transport experiments in undisturbed soils have been carried out to date. The aim of this work was to study the influence of the sorption coefficient, soil-glyphosate contact time, pH, phosphorus concentration and colloid-facilitated transport of []1]4C]glyphosate in undisturbed top-soil columns (20 cm height x 20cm diameter) of a sandy loam soil and a sandy soil. Batch sorption experiments showed strong Freundlich-type sorption to both soil materials. The mobility of glyphosate in soil columns was strongly governed by macropore flow. Consequently, amounts of glyphosate leached from the macroporous sandy loam soil were 50-150 times larger than from the sandy soil. Leaching rates from the sandy soil were not affected by soil-glyphosate contact time, whereas a contact time of 96h strongly reduced the leaching rates from the sandy loam soil. The role of pH and phosphorus concentration in solution was relatively unimportant with respect to total glyphosate leaching. The contribution of colloid-facilitated transport ws <1 to 27% for the sandy loam and <1 to 52% for the sandy soil, depending on soil treatment. The risk for glyphosate leaching from the top-soils seems to be limited to conditions where pronounced macropore flow occurs shortly after application."
Language:English
References:18
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
de Jonge, H., L. W. de Jonge, and O. H. Jacobsen. 2000. [14C]Glyphosate transport in undisturbed topsoil columns. Pest Manage. Sci. 56(10):p. 909-915.
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DOI: 10.1002/1526-4998(200010)56:10<909::AID-PS227>3.0.CO;2-5
Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1002/1526-4998(200010)56:10<909::AID-PS227>3.0.CO;2-5/full
    Last checked: 03/14/2014
    Access conditions: Item is within a limited-access website
http://onlinelibrary.wiley.com/doi/10.1002/1526-4998(200010)56:10<909::AID-PS227>3.0.CO;2-5/pdf
    Last checked: 03/14/2014
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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MSU catalog number: SB 951 .A1 P45
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