Abstract: The invention relates to a device (2) for harvesting stalk material, comprising a feed region, a conveyor device (4), a picking device, and a device which is arranged on a plane below the picking device for cutting stalks and has at least one cutter that rotates in a circulating manner on a horizontal or at least approximately horizontal plane. The aim of the invention is to provide a device with which the vegetable structure of the stubble pieces are damaged in addition to being cut such that bacteria and moisture can more easily penetrate the interior of a stalk piece, in particular stubble standing on the field. This is achieved in that at least one impact element (22) is formed on the cutter (18) which rotates in a circulating manner, said impact element rising over the thickness of the cutter blade.