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. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Jose F. Negron; Robert Cain; Andy Cadenhead; Brian Waugh
    Date: 2019
    Source: Res. Note RMRS-RN-83. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 9 p.
    Publication Series: Research Note (RN)
    Station: Rocky Mountain Research Station
    PDF: Download Publication  (672.0 KB)

    Description

    The spruce beetle, Dendroctonus rufipennis, can cause extensive mortality of Engelmann spruce, Picea engelmannii, during outbreaks. Endemic populations breed in the underside of downed spruces. Outbreaks often develop after blowdowns that create abundant downed trees where beetle populations can increase. Occasionally, managers practice suppression to protect high-value resources. Although not common, lethal trap trees have been used to suppress populations by attracting beetles to insecticide-treated felled trees with the aim of killing the beetles yet little data is available on their effectiveness. In October 2003, a lethal trap tree treatment was implemented in the Routt National Forest in Colorado in an area adjacent to the Steamboat Ski Resort, to minimize population movement into this high-value area. Along with the project, a study was conducted to evaluate treatment effectiveness. Felled trees were divided into two sections; one was sprayed with carbaryl, a common insecticide, while the other one was left unsprayed. In August, 2004, bark samples were extracted from the study trees and from additional completely sprayed trees. We observed no differences in the number of beetle attacks, egg galleries, or life stages between treated and untreated sections of the experimental trees and the completely sprayed trees. Insect populations appeared to be low. We conclude that this technique should not be used until additional data is collected regarding its efficacy.

    Publication Notes

    • You may send email to rmrspubrequest@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

    Negron, Jose F.; Cain, Robert; Cadenhead, Andy; Waugh, Brian. 2019. A test of lethal trap trees for control of spruce beetles. Res. Note RMRS-RN-83. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 9 p.

    Keywords

    Dendroctonus rufipennis, Picea engelmannii, bark beetles, Engelmann spruce, bark beetle suppression

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/58265