@ARTICLE {OGUNREMI: 1986, title = {Effects of tillage and seeding methods on soil physical properties and yield of upland rice for an Ultisol in southeast Nigeria}, author = {Ogunremi, L. T. and Lal, R. and Babalola, O. *}, journal = {Soil & Tillage Research}, year = {1986}, volume = {6}, pages = {305--324}, }