Patent ID: 7168636

Claim:
An apparatus for applying a relatively small volume of biologically active or chemical substance to a relatively large volume of crop comprising: (a) a fluid container adapted for containing a mixture of water and biologically active or chemical substance, including an opening for filling and removal of fluid; (b) a nozzle with a spray orifice; (c) a conduit adapted for fluid communication between the fluid container and the nozzle; (d) a source of pressurized air in fluid communication with the conduit between the fluid container and the nozzle; (e) a pump operatively positioned relative the fluid conduit and adapted to move the mixture from the fluid container to the conduit; (f) a releasable connection in fluid communication between the conduit and the container, the releasable connection comprising a receiver which can retain, in a releasable fashion, the container; so that mixture pulled from the fluid container by the pump is aerated from the source of pressurized air and delivered out of the spray orifice of the nozzle.