Facilitated transport of diuron and glyphosate in high copper vineyard soils

Sylvie Dousset, Astrid R. Jacobson, Jean-Baptiste Dessogne, Nathalie Guichard, Philippe C. Baveye, Francis Andreux

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Abstract

The fate of organic herbicides applied to agricultural fields may be affected by other soil amendments, such as copper applied as a fungicide. The effect of copper on the leaching of diuron and glyphosate through a granitic and a calcareous soil was studied in the laboratory using sieved-soil columns. Each soil was enriched with copper sulfate to obtain soil copper concentrations of 125, 250, 500, and 1000 mg kg(-1). Glyphosate leaching was influenced by soil pH and copper concentration, whereas diuron leaching was not. In the calcareous soil, glyphosate leaching decreased as copper levels increased from 17 mg kg(-1) (background) to 500 mg kg(-1). In the granitic soil, glyphosate leaching increased as copper levels increased from 34 mg kg(-1) (background) to 500 mg kg(-1). The shapes of the copper elution curves in presence of glyphosate were similar to shapes of the glyphosate curves, suggesting the formation of Cu-glyphosate complexes that leach through the soil. Soil copper concentration does not influence diuron leaching. In contrast, increasing copper concentrations reduces glyphosate leaching through calcareous soils, and conversely, increases glyphosate leaching through granitic soils. Our findings suggest that the risk of groundwater contamination by glyphosate increases in granitic soils with elevated copper concentrations.
Original languageEnglish
Pages (from-to)8056-8061
Number of pages6
JournalEnvironmental Science and Technology
Volume41
Issue number23
DOIs
StatePublished - Dec 2007

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glyphosate
copper
leaching
soil
diuron
calcareous soils
vineyard soils
copper sulfate
groundwater contamination
soil amendments
soil pH
fungicides
herbicides

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Dousset, S., Jacobson, A. R., Dessogne, J-B., Guichard, N., Baveye, P. C., & Andreux, F. (2007). Facilitated transport of diuron and glyphosate in high copper vineyard soils. Environmental Science and Technology, 41(23), 8056-8061. DOI: 10.1021/es071664c

Dousset, Sylvie; Jacobson, Astrid R.; Dessogne, Jean-Baptiste; Guichard, Nathalie; Baveye, Philippe C.; Andreux, Francis / Facilitated transport of diuron and glyphosate in high copper vineyard soils.

In: Environmental Science and Technology, Vol. 41, No. 23, 12.2007, p. 8056-8061.

Research output: Contribution to journalArticle

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abstract = "The fate of organic herbicides applied to agricultural fields may be affected by other soil amendments, such as copper applied as a fungicide. The effect of copper on the leaching of diuron and glyphosate through a granitic and a calcareous soil was studied in the laboratory using sieved-soil columns. Each soil was enriched with copper sulfate to obtain soil copper concentrations of 125, 250, 500, and 1000 mg kg(-1). Glyphosate leaching was influenced by soil pH and copper concentration, whereas diuron leaching was not. In the calcareous soil, glyphosate leaching decreased as copper levels increased from 17 mg kg(-1) (background) to 500 mg kg(-1). In the granitic soil, glyphosate leaching increased as copper levels increased from 34 mg kg(-1) (background) to 500 mg kg(-1). The shapes of the copper elution curves in presence of glyphosate were similar to shapes of the glyphosate curves, suggesting the formation of Cu-glyphosate complexes that leach through the soil. Soil copper concentration does not influence diuron leaching. In contrast, increasing copper concentrations reduces glyphosate leaching through calcareous soils, and conversely, increases glyphosate leaching through granitic soils. Our findings suggest that the risk of groundwater contamination by glyphosate increases in granitic soils with elevated copper concentrations.",
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Dousset, S, Jacobson, AR, Dessogne, J-B, Guichard, N, Baveye, PC & Andreux, F 2007, 'Facilitated transport of diuron and glyphosate in high copper vineyard soils' Environmental Science and Technology, vol 41, no. 23, pp. 8056-8061. DOI: 10.1021/es071664c

Facilitated transport of diuron and glyphosate in high copper vineyard soils. / Dousset, Sylvie; Jacobson, Astrid R.; Dessogne, Jean-Baptiste; Guichard, Nathalie; Baveye, Philippe C.; Andreux, Francis.

In: Environmental Science and Technology, Vol. 41, No. 23, 12.2007, p. 8056-8061.

Research output: Contribution to journalArticle

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AU - Dousset,Sylvie

AU - Jacobson,Astrid R.

AU - Dessogne,Jean-Baptiste

AU - Guichard,Nathalie

AU - Baveye,Philippe C.

AU - Andreux,Francis

PY - 2007/12

Y1 - 2007/12

N2 - The fate of organic herbicides applied to agricultural fields may be affected by other soil amendments, such as copper applied as a fungicide. The effect of copper on the leaching of diuron and glyphosate through a granitic and a calcareous soil was studied in the laboratory using sieved-soil columns. Each soil was enriched with copper sulfate to obtain soil copper concentrations of 125, 250, 500, and 1000 mg kg(-1). Glyphosate leaching was influenced by soil pH and copper concentration, whereas diuron leaching was not. In the calcareous soil, glyphosate leaching decreased as copper levels increased from 17 mg kg(-1) (background) to 500 mg kg(-1). In the granitic soil, glyphosate leaching increased as copper levels increased from 34 mg kg(-1) (background) to 500 mg kg(-1). The shapes of the copper elution curves in presence of glyphosate were similar to shapes of the glyphosate curves, suggesting the formation of Cu-glyphosate complexes that leach through the soil. Soil copper concentration does not influence diuron leaching. In contrast, increasing copper concentrations reduces glyphosate leaching through calcareous soils, and conversely, increases glyphosate leaching through granitic soils. Our findings suggest that the risk of groundwater contamination by glyphosate increases in granitic soils with elevated copper concentrations.

AB - The fate of organic herbicides applied to agricultural fields may be affected by other soil amendments, such as copper applied as a fungicide. The effect of copper on the leaching of diuron and glyphosate through a granitic and a calcareous soil was studied in the laboratory using sieved-soil columns. Each soil was enriched with copper sulfate to obtain soil copper concentrations of 125, 250, 500, and 1000 mg kg(-1). Glyphosate leaching was influenced by soil pH and copper concentration, whereas diuron leaching was not. In the calcareous soil, glyphosate leaching decreased as copper levels increased from 17 mg kg(-1) (background) to 500 mg kg(-1). In the granitic soil, glyphosate leaching increased as copper levels increased from 34 mg kg(-1) (background) to 500 mg kg(-1). The shapes of the copper elution curves in presence of glyphosate were similar to shapes of the glyphosate curves, suggesting the formation of Cu-glyphosate complexes that leach through the soil. Soil copper concentration does not influence diuron leaching. In contrast, increasing copper concentrations reduces glyphosate leaching through calcareous soils, and conversely, increases glyphosate leaching through granitic soils. Our findings suggest that the risk of groundwater contamination by glyphosate increases in granitic soils with elevated copper concentrations.

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JO - Environmental Science and Technology

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Dousset S, Jacobson AR, Dessogne J-B, Guichard N, Baveye PC, Andreux F. Facilitated transport of diuron and glyphosate in high copper vineyard soils. Environmental Science and Technology. 2007 Dec;41(23):8056-8061. Available from, DOI: 10.1021/es071664c