@ARTICLE {OIKEH:1998b, title = {Nitrogen fertilizer management effects on maize grain quality in the West African moist savanna}, author = {Oikeh, S. and Kling, J. and Okoruwa, A. }, journal = {Crop Science}, year = {1998}, volume = {38}, number = {4}, pages = {1056--1061}, issn = {0011-183X}, }