Bureau/Division/Agency
Forest Services
Document Type
Text
Exact Creation Date
9-2020
Language
English
Recommended Citation
Department of Agriculture, Conservation and Forestry and Maine Forest Service, "Heterobasidion root disease (Heterobasidion annosum)" (2020). Forest Service Documents. 266.
https://digitalmaine.com/for_docs/266
File Size
1.4 MB
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Rights Statement
No Copyright - United States. URI: http://rightsstatements.org/vocab/NoC-US/1.0/
The organization that has made the Item available believes that the Item is in the Public Domain under the laws of the United States, but a determination was not made as to its copyright status under the copyright laws of other countries. The Item may not be in the Public Domain under the laws of other countries. Please refer to the organization that has made the Item available for more information.
Description
Heterobasidion root disease (Heterobasidion spp., formerly Annosus root disease) is one of the most impactful diseases of conifers in the northern hemisphere. H. irregulare is found in the eastern half of the US, including in Maine on white pine and red pine and may occur on other coniferous and deciduous hosts. The fungus typically enters the tree through a wound and grows into the heartwood and roots causing extensive decay. Infection by H. irregulare makes trees highly susceptible to windthrow and low stem and root breakage. The fungus easily infects stumps after harvest and requires special forest management practices to prevent serious stand impacts.