A agricultural machine for sowing or the application of fertilizer with at least one longitudinal hopper (1) and at least one central metering device, for which the longitudinal hopper (1) is an essential structural part of the whole machine and is arranged to be self-supporting, wherein at its front end is arranged a device (7) for connecting to a towing means and its back end is connected with at least one means (2) of support and at least one dispersion device (3).