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Fate and behaviour of Cu and Zn from pig slurry spreading in a tropical water-soil-plant system

Legros Samuel, Doelsch Emmanuel, Feder Frédéric, Moussard Géraud Daniel, Sansoulet Julie, Gaudet Jean-Paul, Rigaud Sylvain, Basile-Doelsch Isabelle, Saint Macary Hervé, Bottero Jean Yves. 2013. Fate and behaviour of Cu and Zn from pig slurry spreading in a tropical water-soil-plant system. Agriculture, Ecosystems and Environment, 164 (1) : pp. 70-79.

Journal article ; Article de revue à facteur d'impact
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Quartile : Outlier, Sujet : AGRICULTURE, MULTIDISCIPLINARY / Quartile : Q1, Sujet : ENVIRONMENTAL SCIENCES / Quartile : Q2, Sujet : ECOLOGY

Abstract : Pig slurry is commonly spread on crop fields as a means of managing this agricultural waste product. However, this practice has an impact on the environment, e.g. increasing soil copper (Cu) and zinc (Zn) concentrations. Many studies have assessed the fate of these elements, but some questions remain, especially with respect to tropical agrosystems which have yet to be studied in depth. The aim of this study was to determine the fate of Cu and Zn from pig slurry spreading while also focusing on describing the dynamics of these elements in a tropical system and accounting for the three compartments of the water-soil-plant system. We observed that all of the Zn accumulated within the 20-60 cm soil layer. Although the uncertainty calculated for these results was high, these findings were confirmed by the absence of uptake by the plant cover and of leaching via water flows. This pattern for Zn in a tropical setting differed from findings generally reported in temperate areas. The Zn accumulation mechanism in tropical soil seems to be a reversible sorption phenomenon, suggesting the possibility of long-term Zn leaching. The Cu mass derived from pig slurry spreading was stored in the 0-20 cm soil layer. This result obtained in a tropical environment was similar to that noted in temperate areas. This could be explained by Cu speciation in the pig slurry (insoluble copper sulfide), and was therefore relatively independent of the soil-climate system. (Résumé d'auteur)

Mots-clés Agrovoc : Lisier, Porcin, Recyclage des déchets, Impact sur l'environnement, Cuivre, Zinc, Agroécosystème, Plante, eau, Sol tropical, Zone tropicale

Mots-clés géographiques Agrovoc : Réunion

Classification Agris : Q70 - Processing of agricultural wastes
P33 - Soil chemistry and physics
L01 - Animal husbandry
T01 - Pollution

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

  • Legros Samuel, CIRAD-PERSYST-UPR Recyclage et risque (FRA)
  • Doelsch Emmanuel, CIRAD-PERSYST-UPR Recyclage et risque (FRA) ORCID: 0000-0002-7478-4296
  • Feder Frédéric, CIRAD-PERSYST-UPR Recyclage et risque (SEN) ORCID: 0000-0001-8434-5193
  • Moussard Géraud Daniel, CIRAD-PERSYST-UPR Recyclage et risque (REU)
  • Sansoulet Julie
  • Gaudet Jean-Paul, INPG (FRA)
  • Rigaud Sylvain, Université d'Aix-Marseille (FRA)
  • Basile-Doelsch Isabelle, Université d'Aix-Marseille (FRA)
  • Saint Macary Hervé, CIRAD-DG-Direction générale (FRA)
  • Bottero Jean Yves, Université d'Aix-Marseille (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/566782/)

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