A solid distribution system of an agricultural spreader includes a product hopper configured to contain solid particulate material, a blower, a manifold coupled to the blower and having a plurality of outlets, at least one boom arm comprising a plurality of parallel rigid tubes configured to carry the solid particulate material and air from the blower, and a plurality of hoses. The manifold is configured to split air flow from the blower into flows through each of the plurality of outlets. Each valve is in fluid communication with one of the outlets and one of the rigid tubes, and each valve individually controls flow through a respective one of the rigid tubes. Vehicles having such solid distribution systems are also disclosed.

Systems, methods, and devices for evenly disbursing granular products. A device includes a hopper comprising a hopper sidewall and a hopper exit hole, wherein the hopper exit hole is formed in the hopper sidewall. The device includes a flowrate adjustor plate, wherein a position of the flowrate adjustor plate relative to the hopper exit hole determines a flowrate of a product that exits the hopper. The device includes an exit tube comprising a tube sidewall and an exit hole disposed at a distal end of the exit tube, wherein the product passes through an exit interior space defined by the tube sidewall. The device includes a blower in airflow communication with the exit tube, wherein activation of the blower causes the product to be pushed through the exit tube and dispersed through the exit hole in the distal end of the exit tube.

Systems, methods, and devices for evenly disbursing granular products. A device includes a hopper comprising a hopper sidewall and a hopper exit hole, wherein the hopper exit hole is formed in the hopper sidewall. The device includes a flowrate adjustor plate, wherein a position of the flowrate adjustor plate relative to the hopper exit hole determines a flowrate of a product that exits the hopper. The device includes an exit tube comprising a tube sidewall and an exit hole disposed at a distal end of the exit tube, wherein the product passes through an exit interior space defined by the tube sidewall. The device includes a blower in airflow communication with the exit tube, wherein activation of the blower causes the product to be pushed through the exit tube and dispersed through the exit hole in the distal end of the exit tube.