Beyond Climate Change: The Role of Integrated Soil Fertility Management for Sustaining Future Maize Yield in Sub‐Saharan Africa

Antoine Couëdel; Gatien N. Falconnier; Myriam Adam; Rémi Cardinael; Johan Six; Moritz Laub; Alex C. Ruane; Kenneth Boote; Eric Justes; Ward N. Smith; Anthony M. Whitbread; François Affholder; Folorunso M. Akinseye; Juraj Balkovic; Bruno Basso; Arti Bhatia; Bidisha Chakrabarti; Regis Chikowo; Mathias Christina; Babacar Faye; Fabien Ferchaud; Christian Folberth; Thomas Gaiser; Marcelo Galdos; Sebastian Gayler; Aram Gorooei; Brian Grant; Hervé Guibert; Gerrit Hoogenboom; Bahareh Kamali; Fidel Maureira; Fasil Mequanint; Claas Nendel; Cheryl H. Porter; Dominique Ripoche; Leonard Rusinamhodzi; Shikha Sharma; Upendra Singh; Amit Srivastava; Bernard Vanlauwe; Antoine Versini; Murilo Vianna; Heidi Webber; Tobias Weber; Congmu Zhang; Marc Corbeels

doi:10.1111/gcb.70720

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Beyond Climate Change: The Role of Integrated Soil Fertility Management for Sustaining Future Maize Yield in Sub‐Saharan Africa

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Beyond Climate Change: The Role of Integrated Soil Fertility Management for Sustaining Future Maize Yield in Sub‐Saharan Africa

Antoine Couëdel, Gatien N. Falconnier, Myriam Adam, Rémi Cardinael, Johan Six, Moritz Laub, Alex C. Ruane, Kenneth Boote, Eric Justes, Ward N. Smith, …

Global Change Biology, Vol.32(2)

03/02/2026

DOI: https://doi.org/10.1111/gcb.70720

PMID: 41631408

Résumé

integrated soil fertility management

mineral fertilizers

model ensemble

organic amendment

soil organic carbon

soil-crop models

Climate change is projected to exacerbate food insecurity in sub‐Saharan Africa (SSA) by reducing crop yields and soil fertility. Many climate change impact studies in SSA have overlooked long‐term effects of soil fertility on crop yield. We evaluated maize yields under different scenarios of soil fertility (using soil organic carbon as a proxy) and climate change (considering changes in temperature, rainfall, and CO2) at four sites in SSA. Using an ensemble of 15 calibrated soil‐crop models, we found a strong consensus that, without fertilization, soil fertility declines over time, impacting maize yields more strongly than changes in temperature, rainfall, or CO2. The model ensemble indicated that when accounting for soil fertility changes, the yield benefits of combined application of organic and mineral inputs increase over time, even under climate change. These findings highlight the importance of considering long‐term change in soil fertility when assessing impacts of climate change and integrated nutrient management on crop production in SSA.

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Titre: Beyond Climate Change: The Role of Integrated Soil Fertility Management for Sustaining Future Maize Yield in Sub‐Saharan Africa
Créateurs - sans rôle: Antoine Couëdel - Centre de Coopération Internationale en Recherche Agronomique pour le Développement
Gatien N. Falconnier - Centre de Coopération Internationale en Recherche Agronomique pour le Développement
Myriam Adam - Université de Montpellier, Institut Amélioration Génétique & Adaptation des Plantes méditerranéennes & tropicales - AGAP
Rémi Cardinael - Centre de Coopération Internationale en Recherche Agronomique pour le Développement
Johan Six - Department of Environmental Systems Science [ETH Zürich]
Moritz Laub - ETH Zurich
Alex C. Ruane - Goddard Institute for Space Studies
Kenneth Boote - University of Florida
Eric Justes - Centre de Coopération Internationale en Recherche Agronomique pour le Développement
Ward N. Smith - Agriculture and Agri-Food Canada
Anthony M. Whitbread - International Livestock Research Institute
François Affholder - Centre de Coopération Internationale en Recherche Agronomique pour le Développement
Folorunso M. Akinseye - Centre d'Etude Regional pour l'Amelioration de l'Adaptation a la Secheresse
Juraj Balkovic - International Institute for Applied Systems Analysis
Bruno Basso - Michigan State University
Arti Bhatia - Indian Agricultural Research Institute
Bidisha Chakrabarti - Indian Agricultural Research Institute
Regis Chikowo - University of Zimbabwe
Mathias Christina - Centre de Coopération Internationale en Recherche Agronomique pour le Développement
Babacar Faye - Université du Sine Saloum El-Hâdj Ibrahima NIASS
Fabien Ferchaud - Centre de Coopération Internationale en Recherche Agronomique pour le Développement
Christian Folberth - International Institute for Applied Systems Analysis
Thomas Gaiser - University of Bonn
Marcelo Galdos - Rothamsted Research
Sebastian Gayler - University of Hohenheim
Aram Gorooei - Forschungszentrum Jülich
Brian Grant - Agriculture and Agri-Food Canada
Hervé Guibert - Centre de Coopération Internationale en Recherche Agronomique pour le Développement
Gerrit Hoogenboom - University of Florida
Bahareh Kamali - Forschungszentrum Jülich
Fidel Maureira - Michigan State University
Fasil Mequanint - University of Hohenheim
Claas Nendel - University of Potsdam
Cheryl H. Porter - University of Florida
Dominique Ripoche - Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
Leonard Rusinamhodzi - International Institute of Tropical Agriculture
Shikha Sharma - Indian Agricultural Research Institute
Upendra Singh - International Fertilizer Development Center
Amit Srivastava - University of Bonn
Bernard Vanlauwe - International Institute of Tropical Agriculture
Antoine Versini - Centre de Coopération Internationale en Recherche Agronomique pour le Développement
Murilo Vianna - Forschungszentrum Jülich
Heidi Webber - Leibniz Centre for Agricultural Landscape Research
Tobias Weber - University of Hohenheim
Congmu Zhang - University of Florida
Marc Corbeels - Centre de Coopération Internationale en Recherche Agronomique pour le Développement
Détails de publication: Global Change Biology, Vol.32(2)
Note de subvention: We are grateful to the support provided by the Agricultural Model Intercomparison and Improvement Project (AgMIP) leadership team and those who participated as part of the AgMIP Low Input Farming Systems Activity. Part of the study was funded by the DSCATT project "Agricultural Intensification and Dynamics of Soil Carbon Sequestration in Tropical and Temperate Farming Systems" (N degrees AF 1802-001, N degrees FT C002181), supported by the Agropolis Foundation ("Programme d' Investissement d' Avenir" Labex Agro, ANR-10-LABX-0001) and by the TOTAL Foundation within a patronage agreement. This study was also supported by the RAIZ "Promoting agroecological intensification for resilience building" project FOOD/2021/424-933 (https://raiz.org.zw) funded by the European Union, and from the ALAMOD project (https://www.pepr-faircarbon.fr/eng) of the exploratory research program FairCarboN and received government funding managed by the Agence Nationale de la Recherche under the France 2030 program, reference ANR-22-PEXF-0002. A.C.R. participation was made possible by NASA Earth Science Division support to the NASA GISS Climate Impacts Group. We thank the CGIAR Sustainable Farming Program for their support to this research.
Identifiants: 99208443409311
Unité académique: Institut Amélioration Génétique & Adaptation des Plantes méditerranéennes & tropicales - AGAP
Langue: Anglais
Type de ressource: Article de revue scientifique
Champs locaux: hal-05502555