@INBOOK {MULONGOY:1993c, title = {Effect of management practices on alley-cropped maize utilization of nitrogen Alfisol in south-western Nigeria}, author = {Mulongoy, K. and Ibewiro, B. and Oseni, O. and Kilumba, N. and Opara-Nadi, A. O. and Osonubi, O. *}, editor = {Mulongoy, K. and Merckx, R. }, year = {1993}, type = {Soil organic matter dynamics and sustainability of tropical agriculture}, pages = {223--230}, publisher = {John Wiley & Sons with Sayce Publishing (UK), the Catholic University of Leuven (Belgium), IITA, Ibadan}, address = {Ibadan, Nigeria}, }