@ARTICLE {KANG: 1985b, title = {Alley cropping sequentially cropped maize and cowpea with Leucaena on a sandy soil in southern Nigeria}, author = {Kang, B. and Grimme, H. and Lawson, T. L. }, journal = {Plant and Soil}, year = {1985}, volume = {85}, number = {2}, pages = {267--277}, issn = {0032-079X}, doi = {10.1007/bf02139631}, }