The rotary tiller type GF 600 is suitable as a full width tiller for an optimum seedbed preparation for the cultivation of various vegetables and potatoes. An ideal prepared seedbed is the prerequisite for optimum development of the seed resp. planting tubers. Through intensive soil cultivation, root crop ground preparation is perfectly achieved so that undisturbed growth of the crop can be guaranteed. For conventional hilling (in a second working step) the rotary tiller GF 600 can be modified to be used as a rotary hiller. The machine can be converted from independent rows to a full width tiller with a few simple steps. Especially for carrot cultivation, the GF 600 can be equipped with hydraulically driven ridge pressure rollers to smoothen the surface of the ridge tops (option). The drive is designed for a tractor output up to 500 HP. A hydraulically operated foldable frame is available to keep the machine within the allowed transport width (option)