A seed containing and dispensing system may include a mobile base, a primary hopper on the mobile base with an interior to hold particulate material and having a dispensing opening, and a conveyor to transfer particulate material received by the conveyor from the hopper. The conveyor may rotatable with respect to the primary hopper about a rotation axis to at least two positions. The system also including a dispensing apparatus configured to dispense a substance into the particulate material conveyed by the conveyor, and the dispensing apparatus may be configured to move with the conveyor as the conveyor rotates with respect to the primary hopper to permit dispensing of the substance at each of the at least two positions.