The agricultural machine, specifically an agricultural machine for sowing and the application of fertiliser with at least one longitudinal hopper (5), at least one sowing unit (7) and at least four wheels (1) which are arranged so that in the working mode they are a working cylinder and transport wheels in the transport mode, where at least four wheels (1) are mounted on at least two longitudinal bars (2) which are simultaneously connected to a pair of cross-bars (3,4) which are aligned with each other so as to be mutually movable.
