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| Web URL(s): | https://dl.sciencesocieties.org/publications/jeq/pdfs/27/6/JEQ0270061464
Last checked: 12/12/2016
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| Publication Type:
| Refereed |
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| Author(s): | Shaw, Liz J.;
Burns, Richard G. |
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| Author Affiliation: | Research School of Biosciences, University of Kent; Institute of Terrestrial Ecology |
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| Title: | Biodegredation of 2,4-D in a noncontaminated grassland soil profile |
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| Source: | Journal of Environmental Quality. Vol. 27, No. 6, November/December 1998, p. 1464-1471. |
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| Publishing Information: | Madison, Wisconsin: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: 2,4-D; Biodegradation; Mineralization; Soil amendments; Topsoil; Nitrogen; Phosphorus; Potassium; Carbon; Soil microorganisms; Subsoil
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| Abstract/Contents: | "Prediction of groundwater contamination and the development of rational bioremediation strategies require a greater understanding of xenobiotic biodegradation at the soil profile scale. We studied 2,4-dichlorophenoxyacetic acid (2,4-D) biodegradation for up to 83 d in soil samples collected in 10-cm depth increments from a noncontaminated soil profile (0-50 cm). For the four samples collected from 0 to 40 cm, total evolution of Ā¹ā“COā from Ā¹ā“C-ring-UL2,4-D (20 mg kgā»Ā¹, 0.25 MBq kgā»Ā¹) was 50.02 to 60.46% (maximum rate=0.113% dā»Ā¹) or 56.1% (maximum rate=2.67% dā»Ā¹) after 83 d. Enhanced mineralization of successive 2,4-D applications was recorded in all topsoil (0-10 cm) samples and in the subsoil replicates that intially mineralized > 50%. Measurements of 2,4-D disappearance and most probable number analysis corresponded well with the biodegradation data. Inoculation of subsoil with topsoil (10%) increased 2,4-D mineralization in the 5% soil to > 50%, whereas amendment with N, P, K, and/or organic C sources (acetate, catechol, vanillin, 3,5-dihydroxybenzoic acid) did not. We conclude that the subsoil contained a low number of unevenly distributed microorganisms capable of using 2,4-D as a source of C and energy such that not all the subsamples had competent microorganims present." |
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| Language: | English |
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| References: | 56 |
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| See Also: | Other items relating to: 2, 4 - D in Turf |
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| Note: | Tables
Figures |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Shaw, L. J., and R. G. Burns. 1998. Biodegredation of 2,4-D in a noncontaminated grassland soil profile. J. Environ. Qual. 27(6):p. 1464-1471. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/jeq/pdfs/27/6/JEQ0270061464
Last checked: 12/12/2016
Requires: PDF Reader
Notes: Item is within a limited-access website |
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MSU catalog number: S 900 .J6 |
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