The round baler for cut stalk crops with a hinge-type pressing chamber comprises an inlet opening for the stalk crops and a tying arrangement for the completed bale, as well as a pick-up device for the stalk crops with a feed drum which is disposed between the pick-up device and the inlet opening and whose length corresponds to the width of the bale to be tied, as well as a cutting device which is provided in the feed channel and includes a plurality of pivotally supported knives which in their cutting position project into the feed channel and are arranged in at least one row, and which are held in their cutting position by means of spring-loaded knife levers and adapted to be pivoted singly or as a whole against the spring load up to a position in which they have no cutting effect on the stalk crops.