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CA2Africa: conservation agriculture in Africa: analysing and foreseeing its impact - comprehending its adoption

Corbeels Marc, Schuler Johannes, Ndah Hycenth Tim, Uthes Sandra, Zander Peter, Apina Tom, Koala Saidou, Triomphe Bernard, El Mouridi Mohammed, Traoré Karim, Nyagumbo Isaiah, Mrabet Rachid, Penot Eric, Gomez MacPherson Helena, De Graaff Jan, Tittonell Pablo. 2011. CA2Africa: conservation agriculture in Africa: analysing and foreseeing its impact - comprehending its adoption. In : Development on the margin : book of abstracts - Tropentag 2011 : Conference on International Research on Food Security, Natural Resource Management and Rural Development, Bonn, Germany, October 5-7, 2011. eds. Mathias Becker, Christine Kreye, Christina R. Witzenhausen : DITSL, Résumé, pp. 316-317. ISBN 978-3-9801686-7-0 Tropentag 2011, Bonn, Allemagne, 5 October 2011/7 October 2011.

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Use under authorization by the author or CIRAD.
document_563833.pdf

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Matériel d'accompagnement : 1 communication provisoire

Abstract : Conservation Agriculture (CA) is increasingly promoted in Africa as an alternative for coping with the need to increase food production on the basis of more sustainable farming practices. CA is specifically seen as a way to address the problems of soil degradation resulting from agricultural practices that deplete the organic matter and nutrient content of the soil. It aims at higher crop yields and lower production costs. Yet, success with adopting CA on farms in Africa has been limited. 'Conservation Agriculture to Africa' (CA2Africa) is a European Commission-funded project (www. ca2africa.eu) seeking to understand why CA techniques have not been adopted widely throughout Africa. The objective of the project is to examine the agronomic, agro-ecological, socio-economic and institutional conditions that determine success or failure of CA. It brings together the major research players involved with CA in Africa to share, assess and learn together with practitioners from past and ongoing experiences on CA in five regions across Africa on the basis of selected case studies: Eastern Africa (Kenya/Tanzania); Southern Africa (Zimbabwe/Malawi/Zambia); Western Africa (Burkina-Faso/Benin); Northern Africa (Morocco/Tunisia) and Madagascar. CA is analysed and understood using a conceptual framework that distinguishes three scales of analysis: field, farm/village and regional scale. The relative importance of the different determinants of adoption operating at each scale is determined for each case study and guides the assessments and type of analysis. From a biophysical, technical point of view, crop/soil models are used to assess the performance of CA at field scale. At farm and village scales, trade-offs in the allocation of resources become important in determining how CA may fit into a given agroecosystem. Trade-off analysis is done using bio-economic household models. At a regional scale, a qualitative expert assessment tool kit has been developed to determine the specific regional socio-economic, cultural and institutional settings that determine adoption of CA. This contribution will present the overall project philosophy, its conceptual and methodological approaches as well as results from testing selected modelling tools for selected case studies across Africa. These results show the importance of different driving forces and inhibiting forces for CA adoption. (Résumé d'auteur)

Mots-clés Agrovoc : agriculture alternative

Mots-clés géographiques Agrovoc : Zimbabwe, Madagascar, Kenya, République-Unie de Tanzanie, Malawi, Zambie, Burkina Faso, Maroc, Tunisie, Bénin

Mots-clés complémentaires : Agriculture de conservation

Classification Agris : F08 - Cropping patterns and systems
E14 - Development economics and policies

Auteurs et affiliations

  • Corbeels Marc, CIRAD-PERSYST-UPR SCA (BRA)
  • Schuler Johannes, Leibniz Centre for Agricultural Landscape Research (DEU)
  • Ndah Hycenth Tim, Leibniz Centre for Agricultural Landscape Research (DEU)
  • Uthes Sandra, Leibniz Centre for Agricultural Landscape Research (DEU)
  • Zander Peter, Leibniz Centre for Agricultural Landscape Research (DEU)
  • Apina Tom, ACT (KEN)
  • Koala Saidou, TSBF (KEN)
  • Triomphe Bernard, CIRAD-ES-UMR INNOVATION (FRA)
  • El Mouridi Mohammed, ICARDA (TUN)
  • Traoré Karim, INERA (BFA)
  • Nyagumbo Isaiah, CIMMYT (ZWE)
  • Mrabet Rachid, INRA [Maroc] (MAR)
  • Penot Eric, CIRAD-ES-UMR INNOVATION (MDG) ORCID: 0000-0002-2773-5440
  • Gomez MacPherson Helena, CSIC (ESP)
  • De Graaff Jan, Wageningen University (NLD)
  • Tittonell Pablo, CIRAD-PERSYST-UPR SCA (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/563833/)

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