Annosum Root Rot Heterobasidion annosum
Michelle M. Cram
USDA Forest Service
Southern Research Station
320 Green Street
Athens, GA 30602-2044
Phone: 706-559-4233
Fax: 706-559-4245
Email: Cram_Michelle/srs_athens@fs.fed.us
Annosum root rot is an important disease of conifers in temperate zones throughout the world. This disease, caused by Heterobasidion annosum (syn. Fomes annosus), can result in root rot, butt rot, reduced growth, and mortality of host trees. Partial cuts in conifer stands greatly increase the incidence of this disease, especially when environmental conditions are conducive to disease development.
In the southern United States Annosum root rot primarily affects southern pines (loblolly, slash, shortleaf, and longleaf pines) and eastern white pine. The disease is most often associated with thinned pine stands located on sandy, well-drained soils; but can be found on a variety of soils and forest conditions. This disease can cause significant losses in pine stands, orchards, and recreational sites.
The Bugwood Network and Forestry Images Image Archive and Database Systems
The University of Georgia - Warnell School of Forestry and Natural Resources and College of Agricultural and Environmental Sciences - Dept. of Entomology
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