A control system for managing the operation of a tractor PTO (20) using input conditions occurring in a connected baler (50). Baler conditions such as tailgate position, crop pickup position, bale wrapper status, and driveline torque are sensed in the baler, and communicated to an implement-mounted controller (200) whereupon control signals are initiated and communicated to a tractor-mounted controller (100) to manage operation of the tractors PTO (20). Safety may be maintained through the use of operator acknowledgements in order to prevent unexpected engagement of the PTO and a manual override capability allows an operator to suspend automated operation at any time.