The invention relates to a disc spreader comprising a frame consisting of a base frame (11) and an auxiliary frame (21), wherein a container (61) is secured to the base frame (11) and a spreader disc (22) is secured under the container (61) on the auxiliary frame (21), wherein, according to the invention, a dosing unit (12), preferably having a cellular wheel sluice (18), is arranged on the base frame (11) under the container (61), said dosing unit having an outlet (14) at the bottom for a collection hopper (23), wherein the collection hopper (23) is secured to this outlet (14) of the dosing unit (12) and the auxiliary frame (21) is secured on the base frame (11) by means of a quick-closure (15, 25). In this way, it is possible to provide a distributer (32, 32a) which can be connected to the outlet (14) of the dosing unit (12) after removal of the auxiliary frame (21) and the collection hopper (23), such that the disc spreader can be converted into a seeder.
