INFLUENCE OF LATERAL AND VERTICAL PRESSURES IN THE HOPPER OF SEEDING MACHINES ON THE QUALITY OF THEIR WORK
Sowing machines with vertical disc sowing units compare favorably with seeders with horizontal disc units. They are characterized by a more uniform distribution of seeds along the row due to their low drop height from the disc to the bottom of the furrow. They are called precision seeding devices. The quality of work remains good when sowing at higher and high travel speeds (up to 15 km / h). However, it should be noted that the seeding accuracy is influenced by many factors, among which the main ones are filling the cells with seeds (one at a time) and the redistribution of seeds after hitting the bottom of the furrow. The first factor depends on the work of the seeding disc, the second - on the coulter. The filling of the cells with seeds is greatly influenced by the shape and size of the hopper. This is especially noticeable in units with a vertical sowing disc, where the filling area is much smaller than that of a horizontal disc