An agricultural method, using an autonomous, unmanned device and a control device, comprising the following steps, which are performed both sequentially and repeatedly:
- a) automatically harvesting feed crop in a part of a crop field by the autonomous, unmanned device;
- b) automatically loading the harvested feed crop directly into a storage space provided on the autonomous, unmanned device without said harvested feed crop contacting soil;
- c) choosing a destination location from a feeding location and a stationary crop processing location;
- d) automatically transporting the harvested feed crop from the crop field to the chosen destination location by the autonomous, unmanned device;
- and
- e) automatically unloading the harvested feed crop from the storage space of the autonomous, unmanned device at the chosen destination location.