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    Studies on the walnut twig beetle (WTB), Pityophthorus juglandis, in relation to its association with Geosmithia morbida, its survival in felled logs, and its sensitivity to temperature extremes

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    http://hdl.handle.net/10217/74543
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    Abstract
    The walnut twig beetle (WTB, Pityophthorus juglandis) is the vector of Geosmithia morbida and a causal agent of thousand cankers disease (TCD) of black walnut (Juglans nigra). In addition to aggressive feeding by WTB, damage to walnut occurs from canker development around beetle galleries due to G. morbida. Cankers coalesce and girdle the branches and trunk eventually causing mortality. To better understand WTB, studies were initiated to: 1) determine if WTB is attracted to G. morbida, or other bark fungi, when given a choice; 2) determine whether clear plastic tarping or applications of ...
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    Author(s)
    Peachey, Emily

    Advisor(s)
    Tisserat, Ned; Cranshaw, Whitney

    Date Issued
    2012
    Format
    born digital; masters theses
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    • 2000-2019 - CSU Theses and Dissertations
    • Theses and Dissertations - Department of Agricultural Biology

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