A seed potato cutting system includes a cutting roller unit with an endless roller chain, having a plurality of parallel roller sets, each roller set including a plurality of cylindrical rollers on a common axle, with lateral gaps between adjacent rollers, configured to convey seed potatoes toward a distal end of the roller chain. A plurality of pairs of parallel upright blades are disposed at the distal end, the blades having common rotational axes and a cutting edge that passes within a lateral gap between rollers, each pair of blades having a common adjustable blade gap therebetween.
