Global systematic review with meta-analysis reveals yield advantage of legume-based rotations and its drivers

Zhao Jie, Chen Ji, Beillouin Damien, Lambers Hans, Yang Yadong, Smith Pete, Zeng Zhaohai, Olesen Jørgen Eivind, Zang Huadong. 2022. Global systematic review with meta-analysis reveals yield advantage of legume-based rotations and its drivers. Nature Communications, 13 (1):4926, 10 p.

Url - jeu de données - Entrepôt autre : https://doi.org/10.6084/m9.figshare.20290923 / Url - jeu de données - Entrepôt autre : https://doi.org/10.6084/m9.figshare.20290923 / Url - jeu de données - Entrepôt autre : http://www.fao.org/soils-portal/data-hub/soil-maps-and-databases/harmonized-world-soil-database-v12/en/ / Url - autres données associées : https://doi.org/10.6084/m9.figshare.20290959

Résumé : Diversified cropping systems, especially those including legumes, have been proposed to enhance food production with reduced inputs and environmental impacts. However, the impact of legume pre-crops on main crop yield and its drivers has never been systematically investigated in a global context. Here, we synthesize 11,768 yield observations from 462 field experiments comparing legume-based and non-legume cropping systems and show that legumes enhanced main crop yield by 20%. These yield advantages decline with increasing N fertilizer rates and crop diversity of the main cropping system. The yield benefits are consistent among main crops (e.g., rice, wheat, maize) and evident across pedo-climatic regions. Moreover, greater yield advantages (32% vs. 7%) are observed in low- vs. high-yielding environments, suggesting legumes increase crop production with low inputs (e.g., in Africa or organic agriculture). In conclusion, our study suggests that legume-based rotations offer a critical pathway for enhancing global crop production, especially when integrated into low-input and low-diversity agricultural systems.

Mots-clés Agrovoc : culture intercalaire, culture en mélange, légume, rendement des cultures, méthode statistique, fertilisation, traitement de l'information, traitement des données, article de revue

Mots-clés libres : Meta-analysis, Crop rotation, Yield

Classification Agris : F08 - Systèmes et modes de culture
U30 - Méthodes de recherche
C30 - Documentation et information

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

Agences de financement hors UE : National Natural Science Foundation of China, CAST Innovation Foundation, Earmarked Fund for China Agriculture Research System

Auteurs et affiliations

• Zhao Jie, CAU [China Agricultural University] (CHN)
• Chen Ji, AU (DNK)
• Beillouin Damien, CIRAD-PERSYST-UPR HortSys (MTQ) ORCID: 0000-0003-2014-3482
• Lambers Hans, University of Western Australia (AUS)
• Yang Yadong, CAU [China Agricultural University] (CHN)
• Smith Pete, University of Aberdeen (GBR)
• Zeng Zhaohai, CAU [China Agricultural University] (CHN) - auteur correspondant
• Olesen Jørgen Eivind, AU (DNK)
• Zang Huadong, CAU [China Agricultural University] (CHN) - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/601788/)

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