Abstract: A compression system for a dual material delivery assembly for mounting on a frame alongside a plurality of similar assemblies is described. The assembly includes a furrowing knife for producing a furrow in the ground as it is towed across the ground. A fertilizer tube is mounted behind the furrowing knife. A seed dispensing tube provided is for depositing seed in the furrow behind the fertilizer knife offset to one side and above the fertilizer. A packer wheel is attached to the seed tube assembly. The fertilizer knife and the seed tube assembly are separately mounted on a bracket attached to the implement frame for pivotal movement about a common pivot Two separate cylinders are provided to apply a separate force on the furrowing element and the packer wheel. The cylinders of each of the assemblies are commonly connected for common adjustment on the frame or on the go on a tractor towing the frame.

Abstract: A supply tank for the individual openers of an air seeder includes two separate tank elements each formed from two separate tanks. Each opener has two supply ducts, one from each tank element. Each tank has a dispensing roller across its bottom metering material into the separate supply ducts. The two tanks of each element feed into a common tube within a closed enclosure dispensing into a feed end of a respective pipe for a respective one of the openers. The pipes within the enclosure are monitored by a camera system so that the operator can see the dispensing of the material on a monitor screen. The tanks are covered by a sealed lid which pivots about a vertical post at one edge. An air supply pressurizes the tanks and a heater selectively heats the air to one of the tanks selected for supplying fertilizer.