Abstract: The present invention relates to methods for injecting desired amounts of fluids into plants, in particular embodiments, woody plants, e.g., trees and woody vines. A metering device is provided which dynamically measures an amount of fluid that is injected into the plant. A system and method are also provided for creating a pressurized reservoir of injectable fluid in the plant to assist in the injection of the fluid. A pressure release valve is also provided to prevent overpressurization of the pressurized reservoir of injectable fluid. In one embodiment, fluid is returned to a metering device of an injection system when the pressure within the pressurized reservoir exceeds a predetermined amount of pressure. A pressure gauge is also provided that measures pressure within the plant. A falling pressure indicates that fluid is being injected into the plant. Manual and battery-powered plant injection devices are also provided.

Abstract: The present invention includes a needle and method for injecting a fluid, such as a medicament, into a woody plant, e.g., trees, shrubs, or vines. In one embodiment, the needle includes a body having a proximal end, a distal end, an inner conduit extending from the proximal end towards the distal end, and at least one aperture in communication with the inner conduit and an outer surface of the body. An indentation in the outer surface of the body is provided where the aperture opens to the outer surface.

Abstract: A method for injecting fluid into woody plant is disclosed, and apparatus therefor, for delivering disease treatments and nutritional supplements.