Alachlor Dissipation in Shallow Cropland Soil

dc.contributor.author Weed, D.
dc.contributor.author Kanwar, Rameshwar
dc.contributor.author Kanwar, Rameshwar
dc.contributor.author Cambardella, Cynthia
dc.contributor.author Moorman, Thomas
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2018-02-14T16:20:45.000
dc.date.accessioned 2020-06-29T22:40:51Z
dc.date.available 2020-06-29T22:40:51Z
dc.date.embargo 2014-09-21
dc.date.issued 1998-07-01
dc.description.abstract <p>A soil-column laboratory experiment and a 2-yr field-sampling study evaluated the overall dissipation of alachlor [2-chloro-<em>N</em>-(2,6-diethylphenyl)-<em>N</em>-(methoxymethyl) acetamide]. Theses studies also measured the effect of no-till and chisel-plow tillages on alachlor leaching and dissipation. In the top 30 cm layer of soil, the overall half-life was 3 d or less, and the time to 90% dissipation ranged from 17 to 30 d. In no-fill soil, alachlor dissipated slightly faster, and more was transported into the 10 to 30 cm soil layer. Weather conditions promoting the movement of alachlor into the soil, however, weakened the effect of tillage on the dissipation rate. Most of the alachlor present in the soil, regardless of tillage, was found in the top 10 cm at all times. Of the alachlor applied to 30-cm tall soil columns, only 0.4% was removed by water flowing from chisel-plow columns and 1.6% from no-till columns. The results show that tillage was not a key factor in alachlor dissipation and leaching. Alachlor leaching was also a minor component in overall dissipation.</p>
dc.description.comments <p>This article is from <em>Journal of Environmental Quality</em> 27 (1998): 767–776, doi:<a href="http://dx.doi.org/10.2134/jeq1998.00472425002700040007x" target="_blank">10.2134/jeq1998.00472425002700040007x</a>.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/abe_eng_pubs/561/
dc.identifier.articleid 1876
dc.identifier.contextkey 6144167
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_pubs/561
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/1341
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_pubs/561/1998_Weed_AlachlorDissipation.pdf|||Sat Jan 15 00:57:22 UTC 2022
dc.source.uri 10.2134/jeq1998.00472425002700040007x
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.disciplines Soil Science
dc.title Alachlor Dissipation in Shallow Cropland Soil
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 5210e67e-b8da-4e17-be3f-843a09381196
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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