Agricultural machinery and procedure for an agricultural machinery (11) that comprises metering devices (B1, B2, Bn) placed laterally in the agricultural machinery so as to provide a number of parallel metering rows (n), each one of the metering devices (Bn) being connected to at least one control unit (22) for the individual control of each metering device, the control unit (22) receiving a first signal, which acts on the control unit (22) to either start or stop the metering from the laterally outermost positioned and activated metering devices (B1), the control unit (22) receiving a second signal, which acts on the control unit (22) to either start or stop the metering from at least one of the laterally activated second outermost positioned metering devices or groups, the calculation unit, with the aid of the instant of time of the first signal and the instant of time of the second signal as well as the speed of the agricultural machinery, calculating the individual instants of time of start or stop of the metering from each one of the remaining metering devices.