This work is the result of cooperation among numerous experts in different disciplines. The report was prepared by J.P. Lesschen, J.J. Stoorvogel and E.M.A. Smaling. The publication has benefited from the comments and inputs from J. Johnston (Rothamsted, United Kingdom), J. Poulisse, T. Van Den Bergen, A.P. Koohafkan and R. Roy of FAO, and from the collaborators and co-authors of the national partners: R.D. Asiamah and O. Dwomo of the Ghana Soil Research Institute, M.R. Appiah and K. Ofori-Frimpong of the Cocoa Research Institute of Ghana, P. Gicheru of the Kenya Agriculture Research Institute, and S. Kanté of the Mali Institut d’Economie Rurale.
A special thanks goes to J. Plummer for editing this publication and to Lynette Chalk for its preparation.
