Minimizing Losses to Armillaria Root Rot in Ontario Spruce

Organization
Natural Resources Canada (NRCan)
2 Billion Trees (2BT)
Project
Great Lakes Forestry Centre
Resource Type
Technical guide
Authors
Michael Dumas
Roy Whitney
Resource Date:
1994
Page Length
4

Armillaria root rot is the most widespread and destructive root disease of trees in Ontario. The main species found within the province is Armillaria ostoyae [Romagnesi| Kerink (Dumas 1988) which attacks commercial hardwoods and conifers of any age. The Armillaria-infecting propagules are found wherever woody material is present in the soil.