oak wilt

oak wilt
noun
: a destructive disease of oak trees caused by a fungus (Chalara quercina) characterized by wilting and by yellow and red discoloration of the foliage that begins at the top or at the branch extremities and usually progresses downward and inward and that is often accompanied or followed by defoliation

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Plant Pathol.
a disease of oaks, characterized by wilting and discoloration of the leaves and defoliation, usually starting at and spreading from the top of the tree and the ends of the branches, caused by a fungus, Chalara quercina.
[1940-45, Amer.]

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oak wilt noun
A serious fungal disease of oak trees, causing wilting and discoloration of foliage
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Main Entry: ↑oak

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oak wilt,
a serious fungous disease of oak trees that is spread by root grafts and insects. »

Oak wilt is caused by…a fungus that grows in the sapwood of oaks and stops the exchange of nutrients between roots and leaves (Atomic Energy Commission Report).

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n. a fungal disease of oaks and other trees that makes the foliage wilt and eventually kills the tree. ● The fungus is Ceratocystis fagacearum, subdivision Ascomycotina

Useful english dictionary. 2012.

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Look at other dictionaries:

  • Oak wilt — Scientific classification Kingdom: Fungi Division: Ascomycota Subdivision: Pezi …   Wikipedia

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  • oak wilt — noun Date: 1942 a destructive disease of oak trees that is caused by a fungus (Ceratocystis fagacearum) and is characterized by wilting, discoloration, and defoliation …   New Collegiate Dictionary

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