Spread and Intensification of Dwarfmistletoe in Lodgepole Pine Reproduction
Abstract:Examinations were made for dwarfmistletoe in young lodgepole pine regeneration in the vicinity of infected residual stands. Data were collected on 79 plots in Montana, Wyoming, and Colorado. The average proportion of trees visibly infected in reproduction 10, 15, 20, and 25 years old was 3, 9, 18, and 32 percent, respectively. The amount of dwarfmistletoe was highest in reproduction on the better sites. The average maximum distance of infection into reproduction was 26 feet from the infected residual stand. Dissections of the oldest infections on the plots showed that 14 percent of the stands that had dwarfmistletoe were infected before they were 4 years old, and 84 percent were infected before they were 11 years old. None of the factors measured that were associated with the residual stand or with the location of the study areas were correlated with amount of infection in the reproduction. Suggestions for control of dwarfmistletoe in lodgepole pine reproduction based on these findings are given.
Document Type: Journal Article
Affiliations: Region 6, U. S. Forest Service, Portland, Ore.
Publication date: August 1, 1963
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- 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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