الوصف:
Three stands along Benton Creek within the Priest River Experimental Forest,
Idaho, were surveyed for diseases using previously established timber inventory
plots and sample trees. These surveys provided information to aid in formation of silvicultural prescriptions by CEFES (Continuing Education in
Forest Ecology and Silviculture) students. Diseases were quantified at the
stand level using the Northern Region's Insect and Disease Damage Survey
System (INDIDS). The evaluation showed that about 10 percent of the trees
examined had some noticeable disease. Mortality associated with root
disease was found throughout the stands. Based on previous work in the area, we believe most trees are infected with root pathogens but lacked
symptoms. The major pathogenic fungi associated with root diseases were
Phaeolus schweinitzii and Armillaria mellea. Butt and stem decays were also
prevalent, especially Phellinus pini on western white pine and western
larch. Management implications and strategies are discussed.