A vacuum infusion system and method provides for the introduction of desired chemical or treatment fluid directly into functional water conducting elements of a tree without the introduction of air and the subsequent embolization and dysfunction of part of the trees normal transpirational stream. With the present system and method, an orificed-needle is passed through a previously evacuated chamber containing a liquid medium which has been degassed. The insertion of the orificed-needle through this degassed liquid prevents the introduction of air into the tree while the treatment fluid is being pulled into the tree's transpirational stream by the normal xylem tension.
A spike, drivable into the trunk of a tree, includes a hollow body which provides a storage chamber for a water soluble compound such as a pesticide or fertilizer. The spike has a generally pointed first end which facilitates driving the spike into a tree trunk. The hollow body is equipped with bleed apertures near the pointed end, so that when the spike is driven into the trunk of a tree, the storage chamber is coupled to the vascular system thereof. The spike is supplied with a resilient sheath that seals the bleed apertures during shipping and handling. As the spike is driven into a tree trunk, the sheath is peeled off the body, thereby exposing the bleed apertures to the tree's vascular tissue and forming a gasket between the spike body and the aperture created by driving the spike into the trunk.
A fluid injection apparatus and associated method for supplying a pressurized fluid to a permeable portion of a tree. A fluid injection apparatus comprising a receptacle engageable with the tree forms a chamber around the permeable portion of the tree. A reservoir supplies fluid to a pump which selectively transfers the fluid from the reservoir to the chamber, pressurizing the fluid in the chamber. A tree stand comprising a tree clamp and supporting legs can comprise the fluid injection apparatus. The apparatus enables the method of supplying a pressurized fluid to the permeable portion of a tree comprising: providing a fluid-retaining chamber around a permeable portion of the tree; providing a reservoir containing a supply of the fluid; and selectively pumping the fluid from the reservoir to pressurize the chamber.
