Table 4. Disease incidence and treatment levels by root disease and survey method for silviculture prescriptions

a) Due to the potential “flushing” nature of Armillaria, it should be treated intensively wherever practicable, given resource management objectives.
b) Based on estimated incidence from walkthrough. Stands in high hazard ecosystems should be formally surveyed at any incidence below the maximum.
c) Represents Minimal, Alternate, or Intensive level of treatment required.
d) This survey method is Not Recommended for use in detecting this disease under operational conditions.
e) This survey method is Not Tested for use in detecting this disease in this area under operational conditions.
f) Incidence referred to is calculated as described in column 9 of FS 659. Per cent incidence based on 1000 sph.