@ARTICLE {OKOGUN:2007, title = {Evaluation of maize yield in an on-farm maize-soybean and maize-lablab crop rotation systems in the northern Guinea Savanna of Nigeria}, author = {Okogun, J. and Sanginga, N. and Abaidoo, R. }, journal = {Pakistan Journal of Biological Sciences}, year = {2007}, month = {November}, volume = {10}, number = {21}, pages = {3905--3909}, issn = {1028-8880}, note = {WAHub; Science Area; NRM; CRP Maize; Maize; CRP Grain Legumes; Soybean}, }