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Pour retrouver toutes les publications scientifiques dans et autour du projet SPECIFICS, c'est dans cette rubrique !

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HAL : Dernières publications

  • [hal-05372385] Processus biologiques par lesquels les couverts régulent les adventices ?

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    ano.nymous@ccsd.cnrs.fr.invalid (Cordeau, S.) 19 Nov 2025

    https://hal.inrae.fr/hal-05372385v1
  • [hal-05372415] Adapter la densité de semis à la date de semis des couverts pour maximiser la biomasse à destruction : Vesce velue

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    ano.nymous@ccsd.cnrs.fr.invalid (Cordeau, S.) 19 Nov 2025

    https://hal.inrae.fr/hal-05372415v1
  • [hal-05373048] Faut-il maximiser la diversité des espèces de couverts pour améliorer la régulation des adventices ?

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    ano.nymous@ccsd.cnrs.fr.invalid (Cordeau, S.) 19 Nov 2025

    https://hal.inrae.fr/hal-05373048v1
  • [hal-05372438] Effets intentionnels et non-intentionnels des techniques de destruction des couverts ?

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    ano.nymous@ccsd.cnrs.fr.invalid (Cordeau, S.) 19 Nov 2025

    https://hal.inrae.fr/hal-05372438v1
  • [hal-05232413] How contracting in the value chain can reduce farmer's exposure to risks and enhance crop diversification ? A case study approach in the crop sector in France

    Marketing contracts are widely used to organise the exchanges in minor crop value chains facing uncertainty. In this study, we investigate how this vertical coordination tool can incentivize farmers to adopt grain-legumes in their crop rotations by transferring part the production and market risks to downstream firms. The risk transfer mechanism is analysed using a methodology based on surveys of chain of agents involved in a given value chain. We examine 5 case studies based on the type of legume and the organisation of the value chain. The results show that the payment system, the design of the contracts and the material and immaterial resources reinforced by the relationship between farmers and downstream firms, especially technical knowledge resources, contribute to reduce farmer’s exposure to risks and favour the development of the legume value chain, which is key for the agro-ecological transition.

    ano.nymous@ccsd.cnrs.fr.invalid (Auguste Bréavoine) 01 Sep 2025

    https://hal.inrae.fr/hal-05232413v1
  • [hal-05265454] GWASpipe: a Nexflow pipeline for GWAS analyses incorporating quality control

    Genome-wide association studies (GWAS) are powerful tools to link genetic variants with phenotypic traits. However, running GWAS involves several complex steps, including VCF preprocessing, quality control, population structure and relatedness correction, and selecting the right statistical models. We developed GWASpipe, an easy-to-use and automated pipeline to make GWAS more accessible, especially for non-expert users. GWASpipe is built with Nextflow[1] and follows nf-core standards. All tools are packaged in Singularity containers, ensuring reproducibility and easy deployment on any computing system. The pipeline includes :Data quality control, Filtering of low-quality variants and individuals, Population structure analysis, Kinship calculation, Association testing using two R packages (MM4LMM[2] et GAPIT[3] )

    ano.nymous@ccsd.cnrs.fr.invalid (Sophia Marguerit) 17 Sep 2025

    https://hal.inrae.fr/hal-05265454v1
  • [hal-05148951] Reducing risks of crop diversification for the agroecological transition, is contracting in the value chain a part of the solution?

    The sustainability transition in the agri-food sector remains understudied (e.g. Vermunt et al., 2020). A key challenge is crop diversification, which implies a shift from a system dependent on a few major species (like cereals) to one based on many species (including legumes such as chickpeas, lentils, etc.), together with a reorganisation of the value chain, which implies the creation of niche markets, often regulated by contracts between farmers and their first buyer (Adjemian et al., 2016). In addition, low investment in this sector in the past led to a lock-in situation with lack of knowledge, higher yield variability and few outlets (Magrini et al., 2016). Such transformation creates uncertainty and new risks, especially for farmers, including production risks, which require technical knowledge and innovation, and market risks, such as fluctuations in quantity, quality and prices. New organisational arrangements in value chains with farmers, such as production contracts --- pre-planting commitments that fix a quantity, price formulas and technical requirements --- could address uncertainty and develop niche innovation in legumes crops (Cholez and Magrini, 2023). However, whether the governance of exchanges through such contracts could also increase farmers’ innovative capacity to adopt more sustainable practices remains an open question. Additionally, looking at the way the agricultural trade with farmers is structured is also important because market arrangements are major structural dimension of tensions and conflicts within value chains. Our study builds on Cholez and Magrini (2023) initial findings, which highlight the role of production contracts in fostering dialogue, trust, knowledge sharing and learning, which are key to mitigating tensions and conflicts (Andersen et al., 2023). We explore how this vertical coordination tool can support a collective risk management strategy in the French legume sector, and reduce tensions and conflicts within value chains. Our hypothesis is that, while production contracts are primarily designed to secure supply for buyers, they also strengthen trust and collective commitment to sustainable practices, because the contractual design could allow for a risk-sharing mechanism that benefits all parties involved in the long run by reducing opportunism. This encourages investment in both material and human resources needed to sustainably change of the production practices on farms and in processing plants. We developed an original analytical framework based on the economic literature on agricultural risks and contracts (e.g. Hardaker et al., 2004; Roussy et al., 2018, Vavra 2008), combined with the literature on transition studies, in particular on the role of niche innovations (e.g. Smith and Raven, 2012). We apply this framework through 5 in-depth case studies of contract chains, based on 21 interviews with commercial directors of processing and collecting companies and with farmers. Our results highlight the potential role of contracts in supporting the agroecological transition. This research is of particular interest to policy makers at various levels, from the European Commission to local agricultural institutions, and could also inspire other sectors facing value chain organisation challenges for sustainability transition.

    ano.nymous@ccsd.cnrs.fr.invalid (Auguste Bréavoine) 07 Jul 2025

    https://hal.inrae.fr/hal-05148951v1
  • [hal-04982344] CH10 -Advances in the reduction of herbicide use in Conservation Agriculture systems

    Conservation agriculture (CA) appears as a promising agricultural pathway to achieve multiperformance but is currently questioned due to its reliance on herbicides for weed management, especially glyphosate.<p>One limit in the development of CA-based agroecological cropping system less reliant on herbicide use is the strict definition of CA based on technical means (i.e. the three principles) rather than targeted objectives. In this chapter, we mobilize research carried out on experimental stations (e.g. CA-SYS platform) and farmer networks (e.g. French DEPHY-farm network) to synthesize knowledge on how pesticide-free no-till agriculture could be achieved. We provide insights on the multiperformance of pesticide-free and nature-based CA systems compared to reference CA systems. Designing cover crops to ensure growth in a context of unpredictable weather conditions and facilitate mechanical termination, and ensuring crop establishment in absence of tillage and herbicides represent major research avenues for the development of pesticide-free CA systems.</p>

    ano.nymous@ccsd.cnrs.fr.invalid (Stéphane Cordeau) 07 Mar 2025

    https://hal.inrae.fr/hal-04982344v1
  • [hal-05029433] Identification d'idéotypes variétaux pour la gestion des adventices : Exemple du pois associé au blé

    Associer le pois (Pisum sativum L.) au blé (Triticum aestivum L.) peut réduire l'infestation et les dommages causés par les adventices. Nous avons mené des expériences virtuelles avec le modèle FLORSYS afin d'identifier, en fonction du dispositif d'association et de la flore adventice, (1) les paramètres clé du pois (traits) qui déterminent le rendement et le contrôle des adventices dans les associations pois blé, (2) les combinaisons optimales des valeurs des paramètres du pois et du blé, ainsi que les techniques culturales de l'association, pour maximiser ces objectifs. Les simulations ont inclus des variétés existantes (5 pois et 3 blé) et virtuelles (5 et 10). Les associations ont réduit la perte de rendement du pois due aux adventices (de 30 % pour la variété la moins tolérante aux adventices) et l'infestation du champ (14 %). Un rendement élevé en pois dans les associations infestées d'adventices nécessite une variété de pois à haut potentiel de rendement, une variété de blé suppressive des adventices, et des techniques culturales préventives des adventices. Les résultats ont été synthétisés dans des tableaux de conseils.

    ano.nymous@ccsd.cnrs.fr.invalid (Nathalie Colbach) 10 Apr 2025

    https://hal.inrae.fr/hal-05029433v1
  • [hal-05071357] Pulses in branded agri-food products: the African and global situation

    Using text mining methods, we explored the diversity of pulses used in around 350,000 agri-food products launched on the market over the last decade and referenced in the GNPD-Mintel database. The position of soya in comparison with other legumes identified as pulses and promoted by the United Nations were compared worldwide. The positioning of the different species in the list of ingredients and in the products' description have made it possible to assess their relative importance in the branded food offered to consumers. The supremacy of soya was observed worldwide. Such result is confirmed in African countries even though fewer number of products were referenced there. This original method opens up new perspectives for monitoring the use of crops in the food market and its evolution over time and space.

    ano.nymous@ccsd.cnrs.fr.invalid (Marie-Benoît Magrini) 16 May 2025

    https://hal.inrae.fr/hal-05071357v1

La totalité des publications référencées SPECIFICS (ANR20-PCPA-0008) en suivant ce lien.

Contact

specifics-com@inrae.fr 

Date de modification : 13 janvier 2025 | Date de création : 15 septembre 2022 | Rédaction : S. Barbot