1. Soybean growth over and between subsoil channels on two loamy sands;Batchelor;Agron. J.,1982
2. Characterization data for selected Florida soils;Carlisle,1981
3. Experimental designs;Cochran,1957
4. Effect of soil strength on root penetration in coarse-textured soils;Fiskell,1968
5. Energy requirement in no-tillage;Frye,1984