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Communication Dans Un Congrès Année : 2023

Fungicide-borne Cu fate in vineyard soils revealed by combined isotopic and XAS analyses

Résumé

Paper ID: 84613 Special Session 12: Chronically Contaminated Agroecosystems Copper is the main fungicide used in vine and fruit production, also authorized in organic agriculture. Accumulation of Cu in the surface horizons of soils due to repeated inputs of Cu-based treatments has been demonstrated (e.g., Brunetto et al., 2018; Fernandez-Calvino et al., 2009), but the long-term fate of this excess Cu is not yet completely understood. Published XAS-based studies agree with previously documented affinity of Cu for OM (Sonoda et al., 2019; Strawn and Baker, 2009; Jacobson et al., 2007; Boudesocque et al., 2007) and show that, with exception of OM-poor soils, mineral compounds (Feoxyhydroxides, clay minerals, carbonates) play only minor role in Cu accumulation (Strawn and Baker, 2009). However, the questions of Cu mobility, bioavailability and toxicity and of the effect of soil properties and climatic conditions on Cu-remobilization remain unanswered.
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Dates et versions

hal-04209797 , version 1 (18-09-2023)

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  • HAL Id : hal-04209797 , version 1

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Zuzana Fekiacova, Emmanuel Doelsch, Adrien Duvivier, Marie-Laure Pons, Manon Pierdet, et al.. Fungicide-borne Cu fate in vineyard soils revealed by combined isotopic and XAS analyses. Joint International Conference of Biogeochemistry of Trace Elements (ICOBTE) & International Conference of Heavy Metals, Sep 2023, Wuppertal, Germany. ⟨hal-04209797⟩
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