Abstract: A spray cart with pivoting suspension assemblies that include articulating trailing wheels with a hitch arrangement that can vary the amount of weight of the spray cart that can be transferred either to a towing vehicle or to an implement towed by the spray cart. The advantage of this variable weight transfer includes reducing soil compaction by the spray cart wheels by shifting weight to the tractor or by shifting weight to a towed disc, the disc is more effective. The spray cart has means of attachment to a towed disc or plow that effectively creates a single unit out of the spray cart and the towed disc or plow. This combined with the articulating trailing wheels reduces side loads on the wheels.