@ARTICLE {NWOKE:2007, title = {Utilization of phosphorus from different sources by genotypes of promiscuous soybean and cowpea in a low-phosphorus savanna soil}, author = {Nwoke, C. and Diels, J. and Abaidoo, R. and Sanginga, N. }, journal = {African Journal of Agricultural Research}, year = {2007}, volume = {2}, number = {4}, pages = {150--158}, url = {http://www.academicjournals.org/AJAR}, }