Agricultural Machine

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Agricultural machine with a roll and a drawn frame, wherein the roller has at least one pipe that is mounted rotatably about a horizontal axis by means of bearings, and are connected to the frame, wherein the tube is provided with a series of tire, and in each case are lined up on the tube in raised shape extent profiles, the have are able, to form a series of parallel furrows in the ground, wherein the tires at least a portion with raised profile, has a rolling portion is connected with the envelope by two flanks so that an annular cavity is formed of a cross-section, of the has is reduced relative to the cross section of the raised profile, wherein the wall of the shell of the cavity of the tire at least one opening on its side facing the tube. To in a simple way to achieve an increase in the load-carrying capacity of the roller of the agricultural machine is provided that the at least one opening in the wall of the cavity is connected via suitable means air pressure admission mechanism associated with the roll.