In the hitherto known, a regulation of the granulate quantities discharged by the metering wheels of the fertiliser spreader, it is necessary to use highly complicated technical devices which on the one hand are too costly for agricultural operations and on the other hand are too susceptible to faults. The object on which the invention is based is to provide a regulation which is of simple construction, this problem being solved in that a ratio counter is arranged between the input and output of an intermediate gear, the intermediate gear is designed as a continuous gear adjustable via an electric motor, and the ratio number determined by the ratio counter is indicated in a viewing window of an indicator device.