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Fostering temporal crop diversification to reduce pesticide use

Author

Listed:
  • Maé Guinet

    (Univ. Bourgogne, Univ. Bourgogne Franche-Comté)

  • Guillaume Adeux

    (Univ. Bourgogne, Univ. Bourgogne Franche-Comté)

  • Stéphane Cordeau

    (Univ. Bourgogne, Univ. Bourgogne Franche-Comté)

  • Emeric Courson

    (Univ. Bourgogne, Univ. Bourgogne Franche-Comté)

  • Romain Nandillon

    (Univ. Bourgogne, Univ. Bourgogne Franche-Comté)

  • Yaoyun Zhang

    (Univ. Bourgogne, Univ. Bourgogne Franche-Comté)

  • Nicolas Munier-Jolain

    (Univ. Bourgogne, Univ. Bourgogne Franche-Comté)

Abstract

Temporal crop diversification could reduce pesticide use by increasing the proportion of crops with low pesticide use (dilution effects) or enhancing the regulation of pests, weeds and diseases (regulation effects). Here, we use the French National DEPHY Network to compare pesticide use between 16 main crops (dilution effect) and to assess whether temporal crop taxonomic and functional diversification, as implemented in commercial farms specialized in arable field crops, could explain variability in total pesticide use within 16 main crops (regulation effect). The analyses are based on 14,556 crop observations belonging to 1334 contrasted cropping systems spanning the diversity of French climatic regions. We find that cropping systems with high temporal crop diversity generally include crops with low pesticide use. For several crops, total pesticide use is reduced under higher temporal crop functional diversity, temporal crop taxonomic diversity, or both. Higher cover crop frequency increases total pesticide use through an increase in herbicide use. Further studies are required to identify crop sequences that maximize regulation and dilution effects while achieving other facets of cropping system multiperformance.

Suggested Citation

  • Maé Guinet & Guillaume Adeux & Stéphane Cordeau & Emeric Courson & Romain Nandillon & Yaoyun Zhang & Nicolas Munier-Jolain, 2023. "Fostering temporal crop diversification to reduce pesticide use," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-43234-x
    DOI: 10.1038/s41467-023-43234-x
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    References listed on IDEAS

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