Abstract: A coulter blade assembly for use with a farm implement, which assembly comprises a first coulter unit, a second coulter unit, and a third coulter unit, all units mounted to the implement in a triangular arrangement in plan; with the first coulter unit being a lead unit, the second coulter unit trailing and to one side of the lead unit, and the third coulter unit trailing and placed to an opposite side of the second coulter unit for forming with said other coulter units a seedbed, and a substance applicator mounted on the third coulter unit for applying the substance onto the seedbed, and optionally a second substance applicator mounted on the second coulter unit for applying another substance onto the seedbed separated laterally from the other substances. The invention includes further a process of preparing a seedbed by moving and rotating implements such as coulter blades into the ground in a particular triangular relationship in conjunction with one or more substance applications concurrently therewith.

Abstract: A seedbed preparation apparatus attachable to existing seed planting devices comprising a coulter cart. The apparatus is designed to lessen the number of passes required to prepare and plant a field. Fertilizer delivery is provided to the soil raised by the coulter wheels. The fertilizer injector nozzles are secured to flexible mounting devices to permit the nozzle to move in accordance with the terrain preventing clogging or stoppage of the nozzles.

Abstract: A one pass seedbed preparation device having two fluted coulter assemblies per seedbed. The coulter assemblies are attachable to existing seed planting apparatus at their bias spring housings and are offset to provide self-cleaning action. Fertilizer delivery is then provided to an area surrounding the seedbed raised by the coulter wheels. The fertilizer may be delivered by a knife-blade cultivator, an injector or a rolling-disc drive.

Abstract: A one pass seedbed preparation device having two fluted coulter assemblies per seedbed. The coulter assemblies are attachable to existing seed planting apparatus at their bias spring housings and are offset to provide self-cleaning action. Fertilizer delivery is then provided to an area surrounding the seedbed raised by the coulter wheels. The fertilizer may be delivered by a knife-blade cultivator, an injector or a rolling-disc drive.