Pneumatic seed distribution machine for sowing machine, has doser with central pipe wall between supply pipes, where pipe wall is adjusted by adjustment device, so that same quantity of seed is conducted to all distribution pipes
The machine has a machine track switching device coupled with an adjustment device of a doser (2), such that the doser is adjusted to reduce the seed or fertilizer dispensing quantity around a part of quantity applied to seed collection. The doser includes a central pipe wall between two supply pipes, where the pipe wall is adjusted by the adjustment device, so that the same quantity of seed is conducted to all distribution pipes (6).