A machine moveable in a forward direction for cutting and chopping stalk-like harvested crops independently of rows, comprising a frame, a plurality of drawing-in and cutting drums rotatably mounted on the frame for rotation about substantially vertical axes, said drums each having a plurality of teeth operable to engage the crop, a cover fixedly mounted on said frame above at least one of said drums, a divider fixedly mounted on said frame and extending generally forwardly relative to said at least one drum, said cover having an outer edge with a generally rearwardly directed indented arched portion juxtaposed to the divider, said arched portion exposing the underlying teeth of the drum to thereby form an opening for entry of the harvest crop between the exposed teeth underlying said arched portion to thereby provide for cutting one type of crop, and a blocking element adapted to be disposed in a blocking position overlying said arched portion to preclude exposure of the teeth underlying said arched portion to thereby provide for cutting another type of crop.