Pine Stem Rusts Of Canada PDF Download

This guide is designed to provide a reference for identifying, detecting, assessing, and treating pine stem rusts in managed forest stands. The major rusts covered in the guide are western gall rust (Endocronartium harknessii), Comandra blister rust (Cronartium comandrae), stalactiform blister rust (C. coleosporoides), sweet fern blister rust (C. comptoniae), and white pine blister rust (C. ribicola). It gives keys to identification and information on rust behaviour and stand dynamics, rust management techniques and treatments, and criteria used for assessing individual trees in a free-growing survey of rust damage. The appendix contains a table indicating stem rust hazard and risk by British Columbia forest region and guidelines for pruning of white pine.