Abstract: The steerable conveyor includes a conveyor frame supported on a first pair of wheels and a second pair of wheels at laterally opposed first and second sides of the conveyor. The conveyor includes a hitch for connection to a towing vehicle such that the conveyor is pivotal relative to the towing vehicle about a vertical steering axis. A steering mechanism is arranged to pivot all of the steerable wheels relative to the conveyor frame about respective upright steering axes in a common direction of rotation such that the conveyor is arranged to be steered relative to the towing vehicle about the vertical steering axis by steering the conveyor wheels relative to the conveyor frame when the conveyor is towed by the towing vehicle.

Abstract: The steerable conveyor includes a conveyor frame supported on a first pair of wheels and a second pair of wheels at laterally opposed first and second sides of the conveyor. The conveyor includes a hitch for connection to a towing vehicle such that the conveyor is pivotal relative to the towing vehicle about a vertical steering axis. A steering mechanism is arranged to pivot all of the steerable wheels relative to the conveyor frame about respective upright steering axes in a common direction of rotation such that the conveyor is arranged to be steered relative to the towing vehicle about the vertical steering axis by steering the conveyor wheels relative to the conveyor frame when the conveyor is towed by the towing vehicle.

Abstract: A field marker is mounted on the rear corner of the seeder or cultivator frame so that its weight is supported by the packer wheels or support wheel axles at the rear of the frame, thus minimizing the imbalance and uneven seeding that will occur with marker mounted on the front corner. The marker arm is slidably extensible to avoid complex knee-action joints and the mechanisms required to operate them.