Promising weeds forage potential in perennial Mediterranean agroecosystems

Genty Léa, Kazakou Elena, Metay Aurélie, Bastianelli Denis, Bopp Marie-Charlotte, Barkaoui Karim. 2023. Promising weeds forage potential in perennial Mediterranean agroecosystems. Agriculture, Ecosystems and Environment, 347:108388, 13 p.

https://doi.org/10.1016/j.agee.2023.108388

Article de revue ; Article de recherche ; Article de revue à facteur d'impact

Version publiée - Anglais
Accès réservé aux personnels Cirad
Utilisation soumise à autorisation de l'auteur ou du Cirad.
Genty,2023,Agriculture, Ecosystems & Environment.pdf
Télécharger (4MB) | Demander une copie

Url - jeu de données - Dataverse Cirad : https://doi.org/10.18167/DVN1/OXMVBN

Résumé : Biodiversity presence in perennial agroecosystems increases the provision of ecosystem services (ES). Weeds are known to deliver supporting or regulating services but their potential to provide provisioning services is less studied. Our study aims to quantify the potential of weeds to provide forage resources for livestock in two Mediterranean perennial agroecosystems: olive groves and vineyards. We used a trait-based approach to investigate the abiotic determinants of weed quality and quantity variations at both the species and community levels. We surveyed spontaneous vegetation in 16 vineyards and 16 olive groves in the French Mediterranean region with contrasting pedoclimatic conditions and agricultural practices, during spring and fall 2021. Four leaf traits were measured: Leaf Dry Matter Content (LDMC), Specific Leaf Area (SLA), Leaf Nitrogen Content (LNC) and leaf C/N ratio (Leaf C/N) and four forage potential indicators: dry matter digestibility (DMD), crude proteins (CP), neutral detergent fiber content (NDF) and aboveground biomass (AB). We found that DMD of perennial agroecosystems weeds is high (689 ± 116 g kg−1), and can be compared to those of forage species. Using linear mixed models and path analysis, we found that, at the community scale, LDMC is negatively linked to weed forage quality and that disturbing agricultural practices like tillage, increase weed forage quality. However we did not find any effect of agricultural practices or pedoclimate on weeds leaf traits or on weeds quantity. Our results revealed the potential of weeds as highly digestible forage resources for livestock. The long-term aim is to promote the integration of livestock in perennial cropping systems in order to reduce the use of herbicides and/or tillage and to diversify agricultural production.

Mots-clés Agrovoc : services écosystémiques, plante fourragère, mauvaise herbe, agrobiodiversité, vignoble, agroécosystème, Olea europaea

Mots-clés géographiques Agrovoc : France

Mots-clés libres : Forage resources, Leaf dry matter content, Plant functional traits, Soil management, Olive groves, Vineyards, Mediterranean

Classification Agris : F08 - Systèmes et modes de culture
F40 - Écologie végétale

Champ stratégique Cirad : CTS 2 (2019-) - Transitions agroécologiques

Agences de financement hors UE : Agence Nationale de la Recherche, Région Occitanie Pyrénées-Méditerranée

Projets sur financement : (FRA) Boost ecosystem services through highly Biodiversity-based Mediterranean Farming systems

Auteurs et affiliations