Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Population buildup and vertical spread of dwarf mistletoe on young red and white firs in California

    Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Robert F. Scharpf; John R. Parmeter Jr.
    Date: 1976
    Source: Res. Paper PSW-RP-122. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Exp. Stn. 9 p
    Publication Series: Research Paper (RP)
    Station: Pacific Southwest Research Station
    PDF: Download Publication  (553 KB)

    Description

    Rate of population buildup of dwarf mistletoe, Arceuthobium abietinum Engelm. ex Munz., was slow in most small red firs and white firs 12 to 15 years after inoculation with the parasite. Where population buildup did occur, it remained clustered in the lower portions of tree crowns near inoculation sites. Maximum distance of vertical spread was 16 feet (4.8 m), after 15 years. The mean annual rate of vertical spread of the parasite in 12 to 15 years was 3 inches (7 cm) or less in test trees. No vertical spread occurred in some trees. Rate of vertical spread was much slower in all trees than the mean annual height growth of vigorous young red or white firs. Therefore, the test trees were outgrowing the spread of dwarf mistletoe within tree crowns. Vertical spread rate and rate of tree height growth together determine the proportion of tree crown that will be infested at a given time after inoculation.

    Publication Notes

    • You may send email to psw_communications@fs.fed.us to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Scharpf, Robert F.; Parmeter Jr., John R. 1976. Population buildup and vertical spread of dwarf mistletoe on young red and white firs in California. Res. Paper PSW-RP-122. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Exp. Stn. 9 p

    Keywords

    dwarf mistletoe, population dynamics, epidemiology, vertical spread, red fir, white fir, Abies concolor, Abies magnifica, Arceuthobium abietinum, Viscaceae

    Related Search

    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/29639