An agricultural power control system including a moving element, a power source, a signal generating element and a torque modifying device. The moving element is configured to engage a quantity of crop material in a cyclical manner. The power source conveys power to the moving element. The signal generating element is configured to provide a signal relating to an anticipated quantity of crop material prior to the moving element engaging the quantity of crop material. The torque modifying device is configured to cause the power source to alter an amount of torque delivered to the moving element dependent upon the signal.