@ARTICLE {CHIKOYE:2008, title = {Legume-maize rotation and nitrogen effects on weed performance in the humid and subhumid tropics of West Africa}, author = {Chikoye, D. and Ekeleme, F. and Fontem Lum, A. and Schulz, S. }, journal = {Crop Protection}, year = {2008}, volume = {27}, pages = {638--647}, }