Abstract: Agricultural implements are used to transport material, such as inputs in the form of fertilizer, seed, treatment, or some combination thereof, to row units that apply the material to an area of a field. Metering systems can aid in metering and providing a desired amount of material, such as on-demand, to the row units. The metering systems move the metered material to the row units, such as with pneumatics or other fluids. The metering system can be improved by having primary and secondary nozzles of different sizes, which aid in increasing the speed of the fluid moving the material towards the row units. For example, a smaller diameter for the secondary nozzle will provide improved suction and air speed.

Abstract: A steerable cart or trailer is towed by another vehicle. A reverse linkage made up of arms that crisscross one another extends between the tow vehicle and the steerable trailer. The linkage arms are parallel a distance from the tow vehicle before crisscrossing with one another towards the trailer. The linkage arms are rotatable at each end. This allows the arms to rotate in a manner in which the trailer will more closely follow the path of the tow vehicle, especially when the tow vehicle is in the process of turning. The trailer will follow in a manner that reduces compaction and provides a simpler overall operation of equipment.