The disclosure relates to a crop merger system for a harvester. The system includes a frame, first and second rollers mounted to the frame, and a belt disposed over the first and second rollers. The system includes a motor operably coupled to and configured to rotate the second roller. The system includes a controller configured to electronically receive as input a desired speed of the belt. The system includes a sensor configured to detect a measured characteristic associated with the crop merger system, and electronically transmit the measured characteristic to the controller. The controller is configured to determine a measured speed of the belt based on the measured characteristic, and if the desired speed and the measured speed are unequal, the controller is configured to regulate the motor to adjust a speed of the belt to be substantially equal to the desired speed.