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Comparative life cycle assessment of perennial and annual crop production: impact of farming systems and management practices

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  • Additional Information
    • Contributors:
      Agroécologie et Environnement (AGE); ISARA; Laboratoire d'automatique, de génie des procédés et de génie pharmaceutique (LAGEPP); Université Claude Bernard Lyon 1 (UCBL); Université de Lyon-Université de Lyon-École Supérieure de Chimie Physique Électronique de Lyon (CPE)-Centre National de la Recherche Scientifique (CNRS); Iowa State University (ISU); The author(s) declare that financial support was received for the research and/or publication of this article. This research was performed within the frame of the collaborative project NAPERDIV, which was funded through the 2019–2020 BiodivERsA joint call for research proposals, under the BiodivClim ERA-Net COFUND program, and the national funding organization ANR N° ANR-20-EBI5-0007-04.; ANR-20-EBI5-0007,NAPERDIV,Nature-based perennial grain cropping as a model to safeguard functional biodiversity towards future-proof agriculture.(2020)
    • Publication Information:
      CCSD
      Frontiers Media
    • Publication Date:
      2025
    • Collection:
      Université de Lyon: HAL
    • Abstract:
      International audience ; The Intermediate Wheatgrass (IWG) Thinopyrum intermedium (Host) Barkworth & D.R. Dewey, marketed under the trade name Kernza ® has been tested in France with a group of farmers since 2017. The Life Cycle Assessment (LCA) is a recognized methodology to assess the potential environmental impacts and resources consumption associated with a production system. An attributional LCA following ISO 14040/44 was conducted, focusing on static comparisons. The main purpose of this paper was to estimate the “cradle-to-farm gate” environmental effects caused by the cultivation of intermediate wheatgrassin comparison with the main crops produced, among which soft wheat and maize grain stand out. This research has been achieved with 6 farmers, 3 under organic and 3 under conventional production. A comparative assessment was carried out per year and under 3 years of crop rotation to determine contributions to the environmental impact. Several impact categories were evaluated, including global warming potential (GWP), ozone depletion (OD), freshwater eutrophication (FE) freshwater ecotoxicity (FEC) and acidification (AC). Intermediate wheatgrass (IWG) shows significantly better environmental performance per hectare than annual crops due to its perennial nature with limited soil preparation and lower input requirements. Conversely, IWG performs worse per ton due to its relatively low grain yield. IWG results shows higher contribution of mechanical practices than cash crops with 70% for GWP and OD and 20% with FE, AC and FEC due to low use of fertilizers and pesticides over the 3yr. Grain yields of organically grown crops are lower than those of conventionally grown crops, regardless of the crop. Conventional management shows higher environmental impacts than organic per hectare on IWG but also on annual crops in each category. Conversely organic management on IWG conduct to higher GWP and FE per volume due to regular mechanic weeding, inducing fuel consumption, and organic manure applied before sowing. ...
    • Accession Number:
      10.3389/fsufs.2025.1569398
    • Online Access:
      https://hal.science/hal-05238650
      https://hal.science/hal-05238650v1/document
      https://hal.science/hal-05238650v1/file/fsufs-2-1569398.pdf
      https://doi.org/10.3389/fsufs.2025.1569398
    • Rights:
      https://creativecommons.org/licenses/by/4.0/ ; info:eu-repo/semantics/OpenAccess
    • Accession Number:
      edsbas.4DA31FF4