@PROCEEDINGS {LAWSON:1977b, title = {Response of maize (Zea mays L.) to surface and buried straw mulch on a Tropical Alfisol}, author = {Lawson, T. L. and Lal, R. }, booktitle = {International conference on" Role of Soil Physical Properties in Maintaining Productivity of Tropical Soils "}, year = {1977}, publisher = {IITA, Ibadan}, note = {December 6-10}, }