Abstract: A vehicle-mounted spreading apparatus includes a container for the material to be spread, at least one spreading disc rotatable about a vertical axis and a dosing device for conveying material from the container to the spreading disc as the vehicle moves along the ground. The disc and the dosing device are powered from a driving wheel which can be lowered into driving contact with the ground. The driving wheel conveys power to a mechanical power transfer assembly which drives the dosing device and which drives an adjustable speed motor system for the spreading disc.