Infection of young Douglas-firs by dwarf mistletoe in the Southwest

Authors

Robert L. Mathiasen, U.S. Forest Service, Forest Pest Management, Ogden, Utah
Carleton B. Edminster, U.S. Forest Service, Rocky Mountain Forest and Range Experiment Station, Fort Collins, Colorado
Frank G. Hawksworth, U.S. Forest Service, Rocky Mountain Forest and Range Experiment Station, Fort Collins, Colorado

Abstract

Studies in several areas in Arizona and New Mexico show that dwarf mistletoe (Arceuthobium douglasii) is rare in young Douglas-firs growing under infected overstories. Less than 5% of the Douglas-firs under 26 years old and less than 6% of those under 1.4m tall were infected in 77 mistletoe-infested stands. Both percent infection and mean dwarf mistletoe rating of young Douglas-firs increased as tree age, height, and stand dwarf mistletoe ratings increased.

Recommended Citation

Mathiasen, Robert L.; Edminster, Carleton B.; and Hawksworth, Frank G. (1990) "Infection of young Douglas-firs by dwarf mistletoe in the Southwest," Great Basin Naturalist: Vol. 50: No. 1, Article 9.
Available at: https://scholarsarchive.byu.edu/gbn/vol50/iss1/9