| Popis: |
Incidence of cankers caused by comandra blister rust (Cronartium comandrae) on lodgepole pine (Pinus contorta) and distribution of the rust's alternate host, pale comandra (Comandra umbellata subsp. pallida), were mapped in portions of two Wyoming forests. Rust incidence in 24 stands in the Shoshone National Forest varied from 14 to 64%, and rust incidence in 190 plots in the Medicine flow National Forest ranged from 0 to 36%. Comandra populations occurred on open, upper slopes surrounded by lodgepole pine stands in the Shoshone study area and on dry ridge tops along the eastern and western slopes of the Medicine flow study area [...] |
