The device is designed to simultaneously generate marking lines (1) of different periodicities in a cycle. Seed supply to sown elements is interrupted by seed supply interruption elements in periodical return in gaps so that the marking lines are provided for wheels of an agricultural device (4). The sown elements are attached to the interruption elements, so that the periodicities for the marking lines are produced. The periods of the marking lines are adjusted independent of working width of a seeder (2). The marking lines of different periodicities are indicated with different colors.
