FIELD: agriculture.
SUBSTANCE: present invention relates to a flexible disk to install a disk opener with the ability of rotation on the holder relative to the cutting disc for opening of the arable layer. The flexible disk is made with the ability of location with overlapping of the surface to be cleaned of the cutting disc. The flexible disk in its plane of rotation has the maximum distance (D) of the edge and the minimum distance (d) of the edge different from it. In addition, the present invention relates to a disc opener with an output part provided for feeding the seed material and/or fertiliser between the cutting disc and the flexible disk. The opener has a holder for mounting a cutting disc with the ability of rotation for opening arable layer and the flexible disk overlapping its surface to be cleaned. The flexible disk in its plane of rotation has a maximum distance (D) of the edge and the minimum distance (d) of the edge different from it.
EFFECT: invention enables to improve cleaning of the disc coulter.
10 cl, 2 dwg
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