A. The Zone Commander is a unique machine that can do what most sub-soilers can do. However, the Zone Commander has the capacity to operate at depths down to 20” through at least one hard pan layer and many times through two without disturbing the surface other than in the slot directly behind the shank leg. The geometry of the shank leg and the point lift the soil up and lay it back down without rolling or boiling the surface. When the Zone Commander is equipped with the proper options, it can be transformed to a strip-till machine that can till the soil, place fertilizer and prepare the seedbed all in one trip.