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): Thomas C. Harrington; Douglas L. McNew
    Date: 2019
    Source: In: Potter, Kevin M.; Conkling, Barbara L., eds. 2016. Forest health monitoring: national status, trends, and analysis 2015. Gen. Tech. Rep. SRS-213. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. 226 p.
    Publication Series: General Technical Report (GTR)
    Station: Southern Research Station
    PDF: Download Publication  (139.0 KB)

    Description

    A new, late-season leaf disease on bur oak (Quercus macrocarpa) had been observed in southern Minnesota, southwest Wisconsin, eastern Nebraska, and Iowa since the mid-1990s. Symptoms of the new disease included necrosis of the leaf tissue along the veins and death of entire leaves, usually starting in late July (Pokorny and Harrington 2011). Branches in the lower crown were generally the most severely affected, and severity of the disease tended to increase year to year in individual trees. Distinctive fruiting bodies (conidiomata) of a fungus were found along the veins of affected leaves, and the fungus was tentatively identified as Tubakia dryina. However, the cause of the disease had not been established before this project, and the incidence of the disease appeared to be increasing

    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

    Harrington, Thomas C.; McNew, Douglas L. 2016. Chapter 7: Distribution and Intensification of Bur Oak Blight in Iowa and the Midwest ( Project NC-EM-B-10-01). General Technical Report SRS 213. USDA-Forest Service, Southern Research Station. 6 p.

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/58693