Three-point potato diggers attach to the rear of a tractor with a three-point hitch and dig up potatoes, and other root vegetables, while simultaneously removing dirt from a crop. A cutting blade enters the earth under plants and transfers the root crop to a system of strainers.
Potato diggers with three-point hitches can have a variety of features, including power take-off drives that use tractors' engines for power, hydraulic drives, offset hitch settings and adjustable digging depths to harvest potatoes in hills or below ground.
A three-point hitch is a standard type of tractor attachment. Three arms extend from the tractor that connect to the implement and control its height with hydraulics.