Facilitated transport of diuron and glyphosate in high copper vineyard soils.

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.

[1]  M. C. Hermosín,et al.  Dissolved organic carbon interactions with sorption and leaching of diuron in organic‐amended soils , 2007 .

[2]  K. A. Barrett,et al.  Trace Element Mobilization in Soils by Glyphosate , 2006 .

[3]  P. Persson,et al.  Complexation of copper(ll) in organic soils and in dissolved organic matter--EXAFS evidence for chelate ring structures. , 2006, Environmental science & technology.

[4]  H. Vereecken Mobility and leaching of glyphosate: a review. , 2005, Pest management science.

[5]  S. Dousset,et al.  Leaching of glyphosate and AMPA under two soil management practices in Burgundy vineyards (Vosne-Romanée, 21-France). , 2005, Environmental pollution.

[6]  P. Baveye,et al.  Diuron mobility through vineyard soils contaminated with copper. , 2005, Environmental pollution.

[7]  A. Crobe,et al.  Degradation and leaching of the herbicides metolachlor and diuron: a case study in an area of Northern Italy. , 2005, Environmental pollution.

[8]  E. Avramides,et al.  Copper Content in Agricultural Soils Related to Cropping Systems in Different Regions of Greece , 2005 .

[9]  P. Olsen,et al.  Leaching of glyphosate and amino-methylphosphonic acid from Danish agricultural field sites. , 2005, Journal of environmental quality.

[10]  D. Mcphail,et al.  Copper accumulation, distribution and fractionation in vineyard soils of Victoria, Australia , 2004 .

[11]  C. Screpanti,et al.  Influence of insecticidal toxins from Bacillus thuringiensis subsp. kurstaki on the degradation of glyphosate and glufosinate-ammonium in soil samples , 2004 .

[12]  O. Borggaard,et al.  Influence of soil composition on adsorption of glyphosate and phosphate by contrasting Danish surface soils , 2004 .

[13]  C. D. S. Tomlin,et al.  The Pesticide Manual , 2003 .

[14]  J. Antelo,et al.  Analysis of copper and calcium-fulvic acid complexation and competition effects. , 2003, Water research.

[15]  P. Persson,et al.  Coadsorption of Cu(II) and glyphosate at the water-goethite (alpha-FeOOH) interface: molecular structures from FTIR and EXAFS measurements. , 2003, Journal of colloid and interface science.

[16]  E. Morillo,et al.  The effect of dissolved glyphosate upon the sorption of copper by three selected soils. , 2002, Chemosphere.

[17]  E. Morillo,et al.  FTIR study of glyphosate-copper complexes. , 2002, Journal of agricultural and food chemistry.

[18]  P. Persson,et al.  IR and EXAFS spectroscopic studies of glyphosate protonation and copper(II) complexes of glyphosate in aqueous solution. , 2001, Inorganic chemistry.

[19]  W. Dubbin,et al.  X-Ray Absorption Spectroscopic Study of Cu-Glyphosate Adsorbed by Microcrystalline Gibbsite , 2000 .

[20]  R. Bulcke,et al.  Soil Dissipation of Diuron, Chlorotoluron, Simazine, Propyzamide, and Diflufenican Herbicides After Repeated Applications in Fruit Tree Orchards , 2000, Archives of environmental contamination and toxicology.

[21]  E. Morillo,et al.  Glyphosate adsorption on soils of different characteristics. Influence of copper addition. , 2000, Chemosphere.

[22]  H. Jonge,et al.  Influence of pH and solution composition on the sorption of glyphosate and prochloraz to a sandy loam soil , 1999 .

[23]  P. Eberbach Influence of incubation temperature on the behavior of triethylamine-extractable glyphosate (N-phosphonomethylglycine) in four soils. , 1999, Journal of agricultural and food chemistry.

[24]  E. Morillo,et al.  Sorption of glyphosate and Cu(II) on a natural fulvic aced complex: Mutual influence , 1998 .

[25]  L. Brun,et al.  Relationships between extractable copper, soil properties and copper uptake by wild plants in vineyard soils , 1998 .

[26]  D. Baize,et al.  A sound reference base for soils. , 1998 .

[27]  S. Sammartano,et al.  Copper(II) complexes of N-(phosphonomethyl)glycine in aqueous solution: a thermodynamic and spectrophotometric study. , 1997, Talanta.

[28]  E. Morillo,et al.  Adsorption of Glyphosate on the Clay Mineral Montmorillonite: Effect of Cu(II) in Solution and Adsorbed on the Mineral , 1997 .

[29]  R. Kirkwood,et al.  Adsorption, Desorption and Mobility of Four Commonly Used Pesticides in Malaysian Agricultural Soils , 1997 .

[30]  P. Gaillardon Influence of Soil Moisture on Long-Term Sorption of Diuron and Isoproturon by Soil , 1996 .

[31]  F. Hernández,et al.  Adsorption of atrazine, simazine, and glyphosate in soils of the Gnangara Mound, Western Australia , 1996 .

[32]  S. Sauvé,et al.  Ion-selective electrode measurements of copper(II) activity in contaminated soils , 1995 .

[33]  G. Celano,et al.  Adsorption and desorption of glyphosate in some European soils , 1994 .

[34]  D. Mulla,et al.  Herbicide Adsorption and Organic Carbon Contents on Adjacent Low-Input Versus Conventional Farms , 1992 .

[35]  M. McBride Electron Spin Resonance Study of Copper Ion Complexation by Glyphosate and Related Ligands , 1991 .

[36]  M. McBride,et al.  Complexation of Glyphosate and Related Ligands with Iron (III) , 1989 .

[37]  P. Hoggard,et al.  Metal complexes of glyphosate , 1988 .

[38]  R. Glass Adsorption of glyphosate by soils and clay minerals , 1987 .

[39]  V. Freed,et al.  Sorption of Bromacil, Chlortoluron, and Diuron by Soils1 , 1986 .

[40]  A. Martell,et al.  METAL CHELATE FORMATION BY N-PHOSPHONOMETHYLGLYCINE AND RELATED LIGANDS , 1985 .

[41]  Robert S. Bowman,et al.  Analysis of soil extracts for inorganic and organic tracer anions via high-performance liquid chromatography , 1984 .

[42]  L. Liu,et al.  Adsorption of Ametryne and Diuron by Soils , 1970, Weed Science.