Abstract: A seedling planter utilizes support wheels located on a main frame near the rear of the planter. The support wheels are pivotable relative to the frame, thereby allowing the force exerted by a set of intermediate packing wheels to be varied. The seedling planter was a novel planting assembly which incorporates two primary structural members; a first planting assembly piece or link which is connected to the frame, and a planting arm which is pivotally connected to the first piece. The first piece is movable to vary the height of the pivot axis about which the planting arm rotates. The planting assembly also includes a soil height level detection subsystem to automatically control downward extension of the first planting assembly piece. The planting arm is thus positioned at a desired predetermined height above the soil as it is rotated into the ground to provide consistent planting depth. A cam-operated seedling holder clamps the seedlings along the rear edge of the planting arm.

Abstract: A seedling holding and dispensing mechanism used on planters having a planting arm which is intermittently extended downwardly into the soil. The seedling holder and dispenser is preferably mounted along the trailing edge of the planting arm. The seedling holder includes a first jaw and a second jaw. The first jaw is preferably mounted to the trailing edge of the planting arm in a fixed position. The second jaw is mounted for movement relative to the first jaw to allow clamping of the seedlings. The second jaw can be pivotally mounted, such as by using a connecting rod which is pivoted torsionally about a longitudinal axis. A proximate end of the connecting rod is adapted to have a lever arm. The mechanism preferably uses retraction and extension position actuators which automatically open the jaws in both the retracted loading position and the extended discharging position.