@INBOOK {DIEL:2003, title = {Evaluating options for soil organic carbon maintenance under intensive cropping in the West African savanna using the Rothamsted Carbon (RothC) model}, author = {Diels, J. and Aihou, K. * and Iwuafor, E. * and Merckx, R. and Vanlauwe, B. }, editor = {Bontkes, T. and Wopereis, M. }, year = {2003}, type = {Decision support tools for smallholder agriculture in sub-Saharan Africa}, pages = {140--149}, publisher = {IFDC; CTA}, address = {Muscle Shoals, USA ; Wageningen, The Netherlands}, note = {A practical guide}, }