@ARTICLE {SANGINGA:2002, title = {The contribution of nitrogen by promiscuous soybeans to maize based cropping the moist savanna of Nigeria}, author = {Sanginga, N. and Okogun, J. and Vanlauwe, B. and Dashiell, K. }, journal = {Plant and Soil}, year = {2002}, volume = {241}, pages = {223--231}, issn = {0032-079X}, note = {CRP Grain Legumes; Cowpea; CRP Maize;}, url = {https://doi.org/10.1023/A:1016192514568}, doi = {10.1023/a:1016192514568}, }