Patent ID: 7255049

Claim:
A method for applying a product to soil, comprising the steps of: providing a storage tank, which stores the product, in fluid communication with a reservoir; providing a plurality of injectors connected to the reservoir by a fluid conveying member, said plurality of injectors being disposed proximate to a plurality of shanks; priming a discrete, predetermined amount of the product, which is supplied from the storage tank, in the reservoir by a priming member which pressurizes the discrete, predetermined amount of the product in the reservoir to a predetermined pressure level; releasing the discrete, predetermined amount of the product, which is pressurized in the reservoir at the predetermined pressure level, in response to a control signal; and injecting the discrete, predetermined amount of the product, which is released from the reservoir via the fluid communication member, under pressure at the plurality of injectors, wherein each injector intermittently injects the product at a series of locations in a pass through the soil by priming the discreet, predetermined amount of the product to the predetermined pressure level in the reservoir after each injection point, the product diffusing into the soil from each of the injection points to provide diffusion patterns of the product in the soil, wherein the injecting comprises releasing the discrete, predetermined amount of the product as a single charge of the reservoir, which is pressurized by the priming member, at a point in the soil, the product volatilizing from that point to form a diffusion pattern of the product in the soil that is touching, overlapping or intermittent with diffusion patterns from adjacent points of releasing the product as single charges of the reservoir at the injection points.