Phellinus (Poria) weirii Root Rot in Douglas-Fir-Alder Stands 10-17 Years Old

摘要

Red alder growing in even-aged mixture with Douglas-fir did not reduce initial losses to Phellinus weirii 10- to 17-year-old Douglas-fir plantations. P. weirii is creating openings in these young stands with 3 percent of the trees already dead in one case. The symptoms and distinguishing features of P. weirii infection on young trees are described.