Abstract: Provided is an apparatus and method for controlling seed population for a conventional row crop planter utilizing a microprocessor, information from a seed population controller provided with the conventional row crop planter, a GPS or other locating or positioning device and motors for driving the conventional seed metering system of the planter. The microprocessor further feedback from the motors and compares the actual seed population data with the desired density and adjusts the output of the motors to compensate for variations in seed population densities.

Abstract: The present invention provides an improved traction control system which can be advantageously applied to a vehicle which does not employ a spark ignition engine, such as a vehicle powered by a diesel engine. In an embodiment of the invention, a traction control unit (TCU) and a digital potentiometer are interfaced between the wheel speed sensors and the vehicle ECU. The traction control unit senses wheel, the traction control unit causes the digital potentiometer to decrement the throttle position sensor voltage read by the ECU, which in turn reduces the fuel flow through the fuel injector. The reduction in fuel flow reduces the wheel speed and/or wheel torque thereby allowing the slipping wheels to regain traction.