A method and assembly for distributing a granular agricultural material. The assembly includes a container that is configured to be supported by a chassis of a self-powered vehicle. A first conveyor and a second conveyor are associated with the container and configured to receive the granular material contained therein. The first conveyor and the second conveyor each extend in a longitudinal direction that is generally aligned with and offset in opposite lateral directions from a longitudinal centerline axis of the chassis. Preferably, each of the first and second conveyors are independently operable to manipulate the amount of commodity distributed to the alternate lateral sides of the underlying vehicle.
