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Research Notes

Title: Western dwarf mistletoe infects understory Jeffrey pine seedlings on Cleveland National Forest, California

Author: Scharpf, Robert F.; Vogler, Detlev

Date: 1986

Source: Res. Note PSW-RN-386. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 2 p

Station ID: RN-PSW-386

Description: Many young, understory Jeffrey pines (Pinus jeffreyi Grev. & Balf.) were found to be infected by western dwarf mistletoe (Arceuthobium campylopodum Engelm.) on Laguna Mountain, Cleveland National Forest, in southern California. Under heavily infected overstory, about three-fourths of the young pines (about 15 years old on the average) were infected by dwarf mistletoe. Infections per tree averaged about two and a half, two-thirds of these on the bole. Attempts to regenerate Jeffrey pine under an infected overstory in southern California will probably lead to a severely infected and damaged understory. Planting nonhost species or resistant selections of Jeffrey pine would be practical in managing dwarf mistletoe on these highly valuable forest recreational areas.

Keywords: Arceuthobium campylopodum dwarf mistletoe, forest diseases, Jeffrey pine, mistletoes—host resistance, Pinus jeffreyi—injury by mistletoe, reproduction, understory vegetation

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Citation

Scharpf, Robert F.; Vogler, Detlev  1986.  Western dwarf mistletoe infects understory Jeffrey pine seedlings on Cleveland National Forest, California.   Res. Note PSW-RN-386. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 2 p.

Last Modified: Nov 18, 2013 12:44:43 PM