Agricultural machinery and procedure for such

1. An agricultural machine comprising:

a first group of metering devices including at least two electrically controlled metering devices, wherein the at least two electrically controlled metering devices are placed laterally in the agricultural machine so as to provide a number of parallel metering rows;

at least one control unit, wherein each one of the at least two electrically controlled metering devices is connected to the at least one control unit such that the at least one control unit individual controls each metering device;

a calculation unit connected to the at least one control unit;

wherein the at least one control unit is configured to:

receive a first signal that instructs the at least one control unit to either start or stop metering a first metering device of the at least two electrically controlled metering devices,

receive a second signal that instructs the at least one control unit to either start or stop metering a second metering device of the at least two electrically controlled metering devices,

individually control the start or the stop of each of the first metering device and the second metering device based on the first signal and the second signal; and

wherein the calculation unit is configured to, with the aid of a time of the first signal, a time of the second signal, and a speed of the agricultural machine, determine a start time or a stop time of the metering of each of the first metering device and the second metering device.

2. The agricultural machine of claim 1 , wherein the first group of metering devices consists of seed metering devices.

3. The agricultural machine of claim 1 , further comprising:

a second group of electrically controlled metering devices placed in front of or behind the first group of metering devices in relation to the direction of travel such that each of the number of parallel metering rows receives metering from the first group of metering devices and the second group of metering devices;

wherein the calculation unit is configured to, with the aid of the time of the first signal, the time of the second signal, the speed of the agricultural machinery, and a distance between the first group of metering devices and the second group of metering devices, calculates individual instants of time of start or stop of the metering each of the first group of metering devices and the second group of metering devices; and

wherein the at least one control unit individually executes the start or stop of the respective metering of said first group of metering devices and second group of metering devices.

4. The agricultural machine of claim 3 , wherein the second group of metering devices consists of fertilizer metering devices.

5. The agricultural machine of claim 3 , wherein the second group of metering devices consists of biocide agent metering devices.

6. The agricultural machine of claim 3 , wherein each metering device of the first group of metering devices and the second group of metering devices provides for the metering to only one metering row of the number of parallel metering rows.

7. The agricultural machine of claim 3 , further comprising a dosage unit that receives a dosage signal that depends on the speed of the agricultural machine from the at least one control unit, wherein the dosage unit is configured to regulate a delivered amount of an agent from the second group of metering devices in relation to the speed of the agricultural machine.

8. The agricultural machine of claim 7 , wherein the dosage unit is controlled manually or automatically to increase or decrease the delivered amount of agent from the second group of metering devices independently of the speed of the agricultural machinery.

9. The agricultural machine of claim 8 , wherein the dosage unit is automatically actuated for a generally higher or a generally lower metering based on received information about a location and a shape of an area under cultivation and a nature of a soil in co-operation with present data from a GPS receiver connected to the dosage unit.

10. The agricultural machine of claim 3 , further comprising a third group of electrically controlled metering devices placed in front of or behind the first group of metering devices in relation to the direction of travel such that each of the number of parallel metering rows receives metering from the first group of metering devices, the second group of metering devices, and the third group of metering devices;

wherein the second group of metering devices consists of biocide agent metering devices; and

wherein the third group of metering devices consists of fertilizer metering devices.

11. The agricultural machine of claim 1 , wherein the first and the second signal are sent manually for execution to the at least one control unit by an operator.

12. The agricultural machine of claim 1 , wherein the first signal and the second signal are sent automatically for execution to the control unit from the at least one calculation unit after the calculation unit has calculated the start time or the stop time of each metering unit, wherein the calculation unit calculates the start time or the stop time with the aid of stored information about a location and a shape of an area under cultivation and with data from a GPS receiver.

13. The agricultural machine of claim 1 , wherein at least one of the at least two electrically controlled metering devices is a singulation device for seeds.

14. The agricultural machine of claim 1 , further comprising a vehicle configured to tow the first group of metering devices.

15. A method of performing an agricultural operation on an area of land, the method comprising:

providing a first group of metering devices, wherein each of the first group of metering devices are individually controllable by a control unit, wherein the first group of metering devices are arranged to provide metering of a first object to a number of parallel rows when towed by a vehicle;

towing the first group of metering devices with a vehicle;

independently instructing, by the control unit, each of the first group of metering devices to provide the first object to a respective row of the number of parallel rows as the first group of metering devices is towed across the area of land;

determining, by the control unit, that the first group of metering devices is going to cross a planting boundary at a non-perpendicular angle of intersection; and

independently instructing, by the control unit, each of the first group of metering devices to stop providing the first object as each of the first group of metering devices passes over the planting boundary.

16. The method of claim 15 , further comprising:

providing a second group of metering devices, wherein the second group of metering devices are positioned behind the first group of metering devices with respect to a direction of travel of the vehicle, wherein the second group of metering devices are configured to provide metering of a second object to the number of parallel rows when towed by a vehicle;

towing the second group of metering devices by the vehicle; and

independently controlling, by the control unit, each of the second group of metering devices to provide the second object to a respective row of the number of parallel rows as the second group of metering devices is towed across the area of land.

17. The method of claim 16 , further comprising:

providing a third group of metering devices, wherein the third group of metering devices are positioned in front of the first group of metering devices with respect to the direction of travel of the vehicle, wherein the third group of metering devices are configured to provide metering of a third object to the number of parallel rows when towed by a vehicle;

towing the third group of metering devices by the vehicle; and

independently controlling, by the control unit, each of the third group of metering devices to provide the third object to a respective row of the number of parallel rows as the third group of metering devices is towed across the area of land.

18. The method of claim 17 , wherein the first group of metering devices consists of seed metering devices and the first object is seeds; wherein the second group of metering devices consists of biocide metering devices and the second object is a biocide; and wherein the third group of metering devices consists of fertilizer metering devices and the third object is a fertilizer.

19. The method of claim 18 , further comprising modifying, by a dosage unit coupled to the control unit, an amount of biocide delivered to the area of land.

20. The method of claim 15 , further comprising calculating, by a calculation unit coupled to the control unit, a start metering time or a stop metering time for each of the first group of metering devices based at least in part on a determined speed of the vehicle, wherein the instructing steps are performed by the control unit in response to the calculated start metering time or stop metering time.