Abstract: A method of applying a powdered substance over a given area. The method includes the steps of providing a plurality of wind-powered devices which slowly dispense the powdered substance. Each of the devices includes a container for holding a quantity of the powdered substance. In addition, each of the devices includes a mechanism directly powered by the wind for dispensing the powdered substance from the containers. A plurality of the devices are spaced apart in a grid above the area to be treated by the powdered substance. A quantity of the powdered substance is placed in the containers of each of the devices. The wind will then power the dispensing mechanism of each container such that the powdered substance is dispensed from the container and distributed over the given area by the wind.

Abstract: Wind-powered apparatus for applying a powdered substance over a given area including a housing designed to receive a quantity of the powdered substance, a sieve located within the housing and a wind motor assembly. The powdered substance is contained within the housing above the sieve. The wind motor assembly is rotatably received by the housing and extends through the housing. The wind motor assembly includes a center pole, a hub located on top of the center pole, a plurality of blades attached to the hub by spokes, a flexible plate which is attached to the bottom end of the pole beneath the sieve, a counterweight assembly and a scraper bar. The counterweight assembly and scraper bar are attached to the plate. As the wind acts on the blades and rotates the wind motor assembly, the scraper contacts and vibrates the sieve. This releases the powdered substance for distribution over the given area by the wind.