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    Author(s): Charles O. Rexrode; Daniel Brown
    Date: 1983
    Source: Forest Insect & Disease Leaflet 29. [Broomall, PA:] U.S. Dept. of Agriculture, Forest Service, Northern Area State & Private Forestry
    Publication Series: Forest Insect and Disease Leaflet (FIDL)
    PDF: View PDF  (12.3 KB)

    Description

    Oak wilt, caused by the fungus Ceratocystis fagacearum (Bretz) Hunt, kills oak trees. It has been found in 21 States, with considerable damage occurring in the Midwest. It was first recognized as an important disease in 1944 in Wisconsin where, in localized areas (less than 100 acres (40.4 ha)), over half the oaks have been killed. Surveys in eight Wisconsin counties showed that about 11 percent of the annual growth increase of oak forests was offset by mortality caused by oak wilt. In other States, the fungus kills thousands of trees; however, this loss is only a fraction of the total oak timber volume. In West Virginia, for example, where predominately oak forests cover 70 percent of the land area, oak wilt losses average less than one tree per square mile each year. Oak wilt has also been reported in Texas - outside its main range.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Rexrode, Charles O.; Brown, Daniel 1983. Oak Wilt. Forest Insect & Disease Leaflet 29. [Broomall, PA:] U.S. Dept. of Agriculture, Forest Service, Northern Area State & Private Forestry

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