@ARTICLE {VANLAUWE:2001d, title = {Maize yield as affected by organic inputs and urea in the West African moist savanna}, author = {Vanlauwe, B. and Aihou, K. * and Aman, S. and Iwuafor, E. * and Tossah, B. * and Diels, J. and Sanginga, N. and Lyasse, O. and Merckx, R. and Deckers, J. }, journal = {Agronomy Journal}, year = {2001}, volume = {93}, pages = {1191--1199}, issn = {0002-1962}, }