Farming system methods and devices

A load handling device configured for operating in a farming system, the floor of the farming system including a network of tracks, or track network, based on a grid system, the tracks including a first set of track members extending in a first (x-) direction, and a second set of track members extending in a second (y-) direction, the second set of track members running transversely to the first set of track members in a substantially horizontal plane, the load handling device comprising:

• a first set of wheels arranged for engaging with a first set of track members in a first direction;
• a second set of wheels arranged for engaging with a second set of track members in the a second direction, wherein the load handling device is driveable in the first and/or second direction to any location on the track network;
• and
• a support pad located on an upper surface of the load handling device for receiving a growing tray, wherein the support pad is configured to be raised and or lowered in a vertical (z-) direction to lift and lower a received growing tray.