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Publication Information

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Title: HOW to Diagnose Black Walnut Damage

Author: Weber, Barbara C.; Anderson, Robert L.; Hoffard, William H.;

Date:

Source: Misc. Publ. [Broomall, PA]: U.S. Dept. of Agriculture, Forest Service, Northern Area State & Private Forestry

Publication Series: Miscellaneous Publication (MISC)

Description: Black walnut trees, like all other plants, are susceptible to a variety of injuries that reduce or destroy their usefulness. The first step in preventing or controlling these injuries is to identify their cause. Most damage is caused by disease, insects, birds, mammals, or weather. Presented here is a method for identifying the most common causes of injury to black walnut trees. It was developed primarily for use by walnut growers or foresters who are not specifically trained in insect or disease identification. The method features a "key" that leads the user step-by-step from the visual symptoms to the culprit responsible. Supplementing the key are brief descriptions of the damages and their causes, illustrated in most cases with line drawings.

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.
  • This publication may be available in hard copy. Check the Northern Research Station web site to request a printed copy of this publication.
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Citation:


Weber, Barbara C.; Anderson, Robert L.; Hoffard, William H. 0. HOW to Diagnose Black Walnut Damage. Misc. Publ. [Broomall, PA]: U.S. Dept. of Agriculture, Forest Service, Northern Area State & Private Forestry

 


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