Saw head with autonomous stump treatment system

A saw head for treating tree stumps, the saw head comprising:

• a frame which extends between an upper end and a lower end
• a motor attached to the frame and coupled to rotate a drive shaft about a central longitudinal axis of the drive shaft at a target drive shaft speed, the drive shaft having a mount below the motor relative to the frame for fixedly attaching a transverse saw blade to rotate with the drive shaft;
• a harvesting arm pivotally attached to the frame above the mount relative to the frame;
• a harvesting cylinder coupled between the harvesting arm and frame and actuatable to pivot the harvesting arm transversely between an open and closed position;
• a saw blade guard transversely mounted on the frame below the harvesting arm the saw blade guard extending transversely;
• a sensor configured to monitor a current rotational speed of the motor and to output a signal responsive to the current speed of the motor;
• a controller operated fluid dispenser configured to dispense a fluid through a dispenser outlet;
• wherein the saw head is coupled to a controller communicatively coupled to receive the signal from the sensor and operatively coupled to operate the dispenser, the controller configured to dispense the fluid based on a current speed difference between the target drive shaft speed and the current drive shaft speed.