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| Web URL(s): | https://dl.sciencesocieties.org/publications/jeq/pdfs/29/5/JEQ0290051371
Last checked: 12/14/2016
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| Publication Type:
| Refereed |
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| Author(s): | Beulke, Sabine;
Dubus, Igor G.;
Brown, Colin D.;
Gottesbüren, Bernhard |
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| Author Affiliation: | Beulke, Dubus, and Brown: Soil Survey and Land Research Centre, Cranfield University, Silsoe, Bedfordshire, UK; Gottesbüren: BASF AG, Limburgerhof, Germany |
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| Title: | Simulation of pesticide persistence in the field on the basis of laboratory data-a review |
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| Section: | Reviews and analyses
Other records with the "Reviews and analyses" Section
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| Source: | Journal of Environmental Quality. Vol. 29, No. 5, September/October 2000, p. 1371-1379. |
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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: | 9 |
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| Keywords: | TIC Keywords: Pesticide persistence; Models; Soil contamination; Pesticide residues; Pesticides; Mathematical equations; Soil texture; Pesticide degradation; Half-life; Soil temperature; Soil moisture; Kinetics; Losses from soil systems; Pesticide fate; Leaching
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| Abstract/Contents: | "Simulations of pesticide fate in soils are often based on persistence models developed nearly 30 years ago. These models predict dissipation in the field on a daily basis by correcting laboratory degradation half-lives for actual soil temperature and moisture content. They have been extensively applied, but to date no attempt has been made to evaluate existing studies in a consistent, quantitative way. This paper reviews 178 studies comparing presticide soil residues measured in the field with those simulated by persistence models. The simulated percentage of initial pesticide concentration at the time of 50% measured loss was taken as a common criterion for model performance. The models showed an overall tendency to overestimate persistence. Simulated values ranged from 12 to 96% of initial pesticide concentrations with a median of 60%. Simulated soil residues overestimated the target value (50% of initial) by more than a factor of 1.25 in 44% of the cases. An underestimation by more than a factor of 1.25 was found in only 17% of the experiments. Discrepancies between simulated and observed data are attributed to difficulties in characterizing pesticide behavior under outdoor conditions using laboratory studies. These arise because of differences in soil conditions between the laboratory and the field and the spatial and temporal variability of degradation. Other possible causes include losses in the field by processes other than degradation, deviations of degradation from first-order kinetics, descrepancies between simulated and actual soil temperature and moisture content, and the lack of soil-specific degradation parameters. Implications for modeling of pesticide behavior within regulatory risk assessments are discussed." |
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| Language: | English |
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| References: | 69 |
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| Note: | Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Beulke, S., I. G. Dubus, C. D. Brown, and B. Gottesbüren. 2000. Simulation of pesticide persistence in the field on the basis of laboratory data-a review. J. Environ. Qual. 29(5):p. 1371-1379. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/jeq/pdfs/29/5/JEQ0290051371
Last checked: 12/14/2016
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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