@INPROCEEDINGS {YUSUF:2007, title = {Residual benefits of soybeans genotypes and natural fallow to subsequent maize in the Northern Guinea Savanna of Nigeria}, author = {Yusuf, A. A. * and Iwuafor, E. * and Olufajo, O. * and Abaidoo, R. and Sanginga, N. }, booktitle = {In Demand driven technologies for sustainable maize production in West and Central Africa}, year = {2007}, pages = {138--154}, publisher = {WECAMAN; International Institute of Tropical Agriculture (IITA)}, location = {Ibadan, Nigeria}, note = {Proceedings of the fifth Biennial West and Central Africa Regional Maize Workshop. IITA-Cotonou, Benin, 3-6 May, 2005 - 515pp}, }