The present invention relates to a disk of the tilling implement (10) intended to be mounted on a tilling implement and to be driven in rotation during the displacement of the vehicle, comprising a periphery (11) with a succession of lobes (20) which are convex rounded over their entire periphery (21), the disk having a generally concave shape, its center (12) being offset by a same side of the whole of its periphery (11), each lobe (20) also having a concavity additional (24) modifying the concavity of the disk.
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