@ARTICLE {KAMARA A.Y.:2005, title = {Performance of diverse maize genotypes under nitrogen deficiency stress in the northern Guinea Savanna of Nigeria}, author = {Kamara, A. and Menkir, A. and Ajala, S. and Kureh, I. *}, journal = {Experimental Agriculture}, year = {2005}, volume = {41}, number = {2}, pages = {199--212}, }