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): D. N. Appel; R. S. Cameron; A. D. Wilson; J. D. Johnson.
    Date: 2008
    Source: USDA Forest Service, Southern Research Station, Asheville, NC. Special Report How-To SR-1, 8 p.
    Publication Series: Scientific Journal (JRNL)
    PDF: View PDF  (409.57 KB)

    Description

    Measures can be taken to break root connections between live oaks or dense groups of red oaks to reduce or stop root transmission of the oak wilt fungus. The most common technique is to sever roots by trenching at least 4 ft deep with trenching machines, rock saws, or ripper bars. Trenches more than 4 ft deep may be needed to assure control in deeper soils. Although not required, commercially-available root barriers may be inserted in the trench to reduce the potential for trench breakouts. Correct placement of the trench is critical for successful protection of uninfected trees. There is a delay between colonization of the root systemby the fungus and appearance of symptoms in the crown. Therefore, all trees with symptoms should be carefully identified first. Then, the trench should be placed a minimum of 100 ft beyond these symptomatic trees, even though there may be “healthy” trees at high risk of infection inside the trench. Trees within the 100-ft barrier, including those without symptoms, may be uprooted or cut down and removed to improve the barrier to root transmission. Tree removal should be initiated after trenching, starting with healthy trees adjacent to the trench and gradually working inward to include symptomatic trees.

    Publication Notes

    • You may send email to pubrequest@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

    Appel, D. N.; R. S. Cameron; A. D. Wilson; J. D. Johnson. 2008. How to identify and manage oak wilt in Texas. USDA Forest Service, Southern Research Station, Asheville, NC. Special Report How-To SR-1, 8 p.

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/33446