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  1. Characteristics of Blister Rust Cankers on Eastern White Pine

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    Author(s): William R. Phelps; Ray Weber
    Date: 1969
    Source: Research Note NC-80. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
    Publication Series: Research Note (RN)
    Station: North Central Research Station
    PDF: View PDF  (791.7 KB)

    Description

    The growth, development, and sporulation of white pine blister rust cankers were studied on eastern white pine in Wisconsin and Minnesota. Three district canker types were identified on the basis of physical appearance, growth rate, and sporulation. Canker growth rate and sporulation decreased as tree size or age increased, and many cankers apparently became inactive. high mortality of branch cankers was associated with older trees, heavily stocked stands, and small branch diameter.

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    Citation

    Phelps, William R.; Weber, Ray. 1969. Characteristics of Blister Rust Cankers on Eastern White Pine. Research Note NC-80. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station

    Keywords

    Cankers, white pine, blister rust cankers, sporulation

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