How to get a disc harrow to leave the ground level?
"Plowing disks" are usually heavier and designed to run deeper, to break hard soil loose, cut sod or crop residue, and move the ground and break it up. Of course, in doing this, they usually make it pretty rough and, depending on design, conditions, adjustments, and operation, can leave the field in very rough condition with some pretty bad ridging or furrowing or both.