Leaching of glyphosate and AMPA under two soil management practices in Burgundy vineyards (Vosne-Romanée, 21-France).
Some drinking water reservoirs under the vineyards of Burgundy are contaminated with herbicides. Thus the effectiveness of alternative soil management practices, such as grass cover, for reducing the leaching of glyphosate and its metabolite, AMPA, through soils was studied. The leaching of both molecules was studied in structured soil columns under outdoor conditions for 1 year. The soil was managed under two vineyard soil practices: a chemically treated bare calcosol, and a vegetated calcosol. After 680 mm of rainfall, the vegetated calcosol leachates contained lower amounts of glyphosate and AMPA (0.02% and 0.03%, respectively) than the bare calcosol leachates (0.06% and 0.15%, respectively). No glyphosate and only low amounts of AMPA (<0.01%) were extracted from the soil. Glyphosate, and to a greater extent, AMPA, leach through the soils; thus, both molecules may be potential contaminants of groundwater. However, the alternative soil management practice of grass cover could reduce groundwater contamination by the pesticide.
Landry
David
D
UMR 1229 INRA/Université de Bourgogne, Microbiologie et Géochimie des sols, Centre des Sciences de la Terre, Université de Bourgogne, 6 bd Gabriel 21000 Dijon, France. david.landry@u-bourgogne.fr
Dousset
Sylvie
S
Fournier
Jean-Claude
JC
Andreux
Francis
F
D000383:Agriculture; D004784:Environmental Monitoring / Q000379:methods; D005602:France; D005998:Glycine / Q000031:analogs & derivatives / Q000032:analysis; D006540:Herbicides / Q000032:analysis*; D006801:Humans; D006109:Poaceae; D016062:Porosity; D012987:Soil; D012989:Soil Pollutants / Q000032:analysis*; D027843:Vitis; D014872:Water Movements; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018350:alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid / Q000032:analysis; D000097797:Glyphosate
D005998:Glycine; D006540:Herbicides; D012987:Soil; D012989:Soil Pollutants; D014874:Water Pollutants, Chemical; D018350:alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid; D000097797:Glyphosate