@INPROCEEDINGS {ABAIDOO:2007, title = {Genotypic variation of soybean for phosphorus use efficiency and their contribution of N and P to subsequent maize crops in three ecological zones of West Africa}, author = {Abaidoo, R. and Sanginga, N. and Okogun, J. and Kolawole, G. and Diels, J. and Tossah, B. *}, booktitle = {In Demand driven technologies for sustainable maize production in West and Central Africa}, year = {2007}, pages = {194--224}, 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}, }