Soil Pulverizers Land Pride's models SPS2048 and SPS3072 soil pulverizers with seedbox rip into crusted soils with reversible 1/2 inch thick scarifier teeth. The fluted seed cups then precisely meter the desired amount of seed to soil contact. Available in 48 inch or 72 inch widths. Designed for 20-50 HP tractors, features include 3/8 in. by 1 in. heat treated steel spikes with replaceable wear sleeves, 1 bu./ft. seedbox, heavy-duty lid with seed splash guard, roller cleaning brush and two pneumatic gauge wheels.