Apparatus and method for pest control

In an apparatus for application of a liquid chemical treatment to plants in a field, a movable framework, first and second spaced-apart depending portions mounted upon the framework for providing a space extending longitudinally of the framework, first and second impellers rotatably mounted to the depending portions for creating first and second streams of air in directions at an angle to the longitudinal axis, the impellers being positioned on the depending portions so that the first and second streams of air are longitudinally offset from each other, and nozzles carried by the framework for introducing the liquid chemical treatment into the streams of air produced by the impellers whereby the streams of air cause the plants to bend to and fro as the plant passes through the space so as to permit the chemical treatment to reach the underside of the plants.

In an apparatus for application of a liquid chemical treatment to plants in a field, a movable framework, first and second spaced-apart depending wall portions mounted upon the framework for providing a space extending longitudinally of the framework, first and second impellers carried by the framework for creating streams of air, first and second shrouds surrounding the first and second impellers and providing exit openings into the space so that streams of air created by the impellers traverse the space in directions at an angle to the longitudinal axis to create turbulence in the air in the space and nozzles carried by the framework for introducing the chemical treatment into the streams of air produced by the impellers.

In an apparatus for application of a chemical treatment to plants in a field, a movable framework, first and second spaced-apart depending portions mounted upon the framework for providing a space extending longitudinally of the framework, means carried by the first and second depending portions for creating first and second pulsed streams of air in directions at an angle to the longitudinal axis and means carried by the framework for introducing the chemical treatment into the space whereby the pulsed streams of air facilitate the chemical treatment reaching the underside of the plants.

In an apparatus for application of a chemical treatment to plants in a field, a movable framework, a hood member carried by the framework for extending over the plants, an impeller rotatably mounted to the hood member for creating a stream of air directed downwardly toward the plants and means carried by the framework for dispensing the chemical treatment onto the plants.