Method of inducing lightwood formation in pine trees

Abstract From the Canadian patent

Abstract of the Disclosure, An improved method of inducing "lightwood formation" (the deposition of oleoresin) in conifers is described. A small area on the tree is treated with an aqueous chemical solution which, moves through the wood causing the ray parenchyma and epithelial cells to release oleoresin from the resin ducts into the tracheids and stimulating increased oleoresin production. The oleoresins axe extracted from the trees by known methods and useful products such as rosin and turpentine are recovered therefrom.