FIELD: agriculture. ^ SUBSTANCE: roller comprises a composite frame, spherical discs with mounted between them rings freely located on the axis. The roller frame is made with the possibility of changing the angle of mounting the lateral beams with spherical discs to the direction of movement and fixation in a given position. On the frame lateral beams semi-axes are mounted with the ability of rotation around the axes. The spherical discs are mounted with convex sides towards the axis of symmetry of the roller and the concave sides are rigidly fixed on the semi-axes. The spherical discs are mounted with the ability of movement in the horizontal plane with semi-axes along the frame lateral beams and fixing in the given position. ^ EFFECT: improvement of uniformity of compaction of the soil ridges on the seeds sown. ^ 3 dwg
