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| DOI: | 10.1002/ps.2077 |
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| Web URL(s): | https://onlinelibrary.wiley.com/doi/pdf/10.1002/ps.2077
Last checked: 07/09/2018
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https://onlinelibrary.wiley.com/doi/full/10.1002/ps.2077
Last checked: 07/09/2018
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Pot, Valérie;
Benoit, Pierre;
Le Menn, Mona;
Eklo, Ole-Martin;
Sveistrup, Tore;
Kværner, Jens |
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| Author Affiliation: | Pot, Benoit and Le Menn: INRA, AgroParisTech, Thiverval-Grignon, France; Eklo: Bioforsk - Norwegian Institute of Agricultural and Environment Research, Plant Health and Protection Division; Sveistrup and Kværner: Bioforsk - Norwegian Institute of Agricultural and Environment Research, Soil and Environment Division, ; Sveistrup: Bioforsk - Norwegian Institute of Agricultural and Environment Research, Arctic Agriculture and Land Use Division, Tromsø, Norway |
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| Title: | Metribuzin transport in undisturbed soil cores under controlled water potential conditions: Experiments and modelling to evaluate the risk of leaching in a sandy loam soil profile |
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| Section: | Research articles
Other records with the "Research articles" Section
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| Source: | Pest Management Science. Vol. 67, No. 4, April 2011, p. 397-407. |
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| Publishing Information: | Barking, Essex: Elsevier Science Publishers LTD |
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| # of Pages: | 11 |
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| Related Web URL: | https://onlinelibrary.wiley.com/doi/abs/10.1002/ps.2077
Last checked: 07/09/2018
Notes: Abstract only |
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| Keywords: | TIC Keywords: Alluvial soils; Core sampling; Herbicide fate; Leaching; Metribuzin; Sandy loam soils; Water potential
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| Abstract/Contents: | "Background: Mobility of pesticides in soils is often evaluated and characterised in the surface soil layers rather than at different depths where soil characteristics such as soil organic matter, microbial biomass or clay contents can strongly change pesticide behaviour. The objective of this work was to characterise the reactivity of the herbicide metribuzin in three main soil horizons found in the 0-80 cm profile of an alluvial soil of southern Norway under dynamic transport conditions. Results: A laboratory infiltrometer was used to perform percolation experiments in soil cores sampled in the three horizons Ap, Bw and Bw/C, at a fixed matric potential of - 10 cm, thus preventing pores of equivalent radii higher than 0.015 cm from contributing to water flow. The physical equilibrium transport model correctly described the transport of water tracer (bromide). The distribution coefficient Kd values were estimated to be 0.29, 0.17 +/- 0.02 and 0.15 +/- 0.00 L kg-1 for horizons Ap, Bw and Bw/C respectively, in close agreement with batch sorption data. Degradation was found only for the surface horizon with a short half-life of about 5 days, in disagreement with longer half-lives found in batch and field degradation data. Conclusion: For all horizons, a kinetic sorption model was needed for better description of metribuzin leaching. Chemical non-equilibrium was greatest in the Bw horizon and lowest in the Bw/C horizon. Overall, metribuzin exhibited a greater mobility in the deeper horizons. The risk of metribuzin transfer to groundwater in such alluvial soils should therefore be considered." |
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| Language: | English |
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| References: | 52 |
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| Note: | Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Pot, V., P. Benoit, M. Le Menn, O.-M. Eklo, T. Sveistrup, and J. Kværner. 2011. Metribuzin transport in undisturbed soil cores under controlled water potential conditions: Experiments and modelling to evaluate the risk of leaching in a sandy loam soil profile. Pest Management Science. 67(4):p. 397-407. |
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| DOI: 10.1002/ps.2077 |
| Web URL(s):
https://onlinelibrary.wiley.com/doi/pdf/10.1002/ps.2077
Last checked: 07/09/2018
Requires: PDF Reader
Access conditions: Item is within a limited-access website
https://onlinelibrary.wiley.com/doi/full/10.1002/ps.2077
Last checked: 07/09/2018
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2219665 |
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