FIELD: agriculture.SUBSTANCE: share for planting potatoes includes a rack, a passive housing with cutout windows, a tuber guide. In front of the passive housing, two flat toothed discs are installed in series on the rack, mounted at an incidence angle to the motion direction and with an inclination to the vertical axis a furrow-forming device mounted with the possibility of reinstallation by height and made in the form of two spherical discs, the convexity of which faces each other and the longitudinal share axis, and a tuber guide. The passive housing is rigidly connected to the rear side of the tuber guide and has two sidewalls spaced apart. Each sidewall has a cutout window, in which a flat toothed disc with soil-conveying elements made in the form of a half-parabola, the branch of which faces the disc edges, and the vertex - towards its center, and with a convexity towards the share motion direction, is arranged with the possibility of rotation. The lower end of the tuber guide is smoothly bent to the side opposite to the share motion direction. The front cutting edge of each tooth of flat toothed discs mounted on the rack is made over a section of the logarithmic spiral and is arranged radially outwardly with respect to the disc center, and the back edge of each tooth is made in the form of a straight line connecting the sharp end of the tooth tip to the disc center. Each flat disc placed in the cutout window is mounted on a vertical axis mounted with the possibility to adjust its inclination angle relative to the vertical by moving it along a groove (sector) made in the sidewall of the passive housing and equipped with trapezoidal teeth without sharpening. Each vertical axis by means of a bracket is fixed from the inside to the sidewall of the passive housing.EFFECT: increasing the germinating rate and the development of potato tubers.4 cl, 3 dwgИзобретение относится к области сельскохозяйственного машиностроения, в частности к сошникам машин для посадки карто
