A baler having a baler frame, a main drive assembly that includes a starter roll drive shaft mounted to rotate on the baler frame, and a pick-up assembly connected to the baler frame is disclosed. The pick-up assembly has a reverse control apparatus for reversing the direction of rotation of a conveying rotor to disimpact any impacted plug of cut crop material from the rotor. The reverse control apparatus can be operated remotely from a tractor connected to the baler.