Effects of Dwarfmistletoe on Immature Lodgepole Pine Stands in Colorado

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Abstract:

Effects of dwarfmistletoe (Arceuthobium americanum) on growth of lodgepole pine were studied in 25 Colorado stands from 50 to 150 years old. The amount of damage caused by the parasite is most closely related to time since infection, but also, to a lesser extent, to stand age when initial infection occurred. Reduction in height and d.b.h. of dominant and codominant trees averaged about 0.7 percent per year since time of infection. The reduction in total and merchantable cubic foot volume per plot averaged 1.3 and 1.9 percent per year, respectively. The latter figures represent combined losses from growth retardation and mortality. Graphs show the cubic foot volume in 50-, 75-, and 100-year-old stands that had been infected for various lengths of time.

Document Type: Journal Article

Affiliations: Forest Pathologist, Rocky Mountain Forest and Range Expt. Sta., Forest Service, U.S. Dept. Agric., with Central Headquarters at Fort Collins, Colo., in Cooperation with Colorado State University

Publication date: January 1, 1964

More about this publication?
  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.
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