A seeding group (11) comprises a distributor (1) for releasing seeds (2) to fall on a terrain (3). The group includes a rotary batching disc (5) provided with a plurality of seatings (6) for seeds (2), release of a seed (2) from a corresponding seating (6) occurring when the seating (6) runs through a predetermined circular sector. A control unit (13) receives a signal emitted by a first sensor (12) and commands rotation of the batching disc (5) for regulating release of the seeds (2) on the terrain (3). The first sensor (12) is a position sensor that detects a position of the seeding group (11) with respect to a reference point that is fixed in space.
