Abstract: A method and system for planting one of a plurality of seed types, hybrids and/or varieties is provided. A planter is provided with a plurality of row units. The row units include dynamic metering systems, which can include multiple seed meters at a particular row unit. The metering systems including more than one seed meters are configured such that the seed meters will plant a different seed types or varieties. The operation of one or more of the seed meters at a time will provide for the planting of a particular seed variety. When the invention provides for on-the-go changing of a seed being planted by changing the operation of one or more of the seed meters at each of the row units and provides for almost infinite variation among the row units for planting particular seed varieties or not planting at all.

Abstract: A rotary apparatus for purging empty bottles with nitrogen gas includes a rotor from which arms of flexible material radiate. Each arm carries a gas supply lead. The arrangement is that advancing bottles engages the heads and thereby drive the rotor. Valve means is provided whereby each head in turn is placed in communication with a purging gas supply when it reaches a first position and the communication is ended when the head reaches the second position. During its course of travel from the first position to the second position, the head communicates with a respective bottle and the bottle is thereby purged.