Biology and Control of Oak Wilt in Michigan Red Oak Stands

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Abstract:

This paper explains the components of an integrated approach to oak wilt control which has strong potential for adaptation to red oak forests throughout the Lake States. Oak wilt epicenter containment involves (1) separating grafted root systems with a vibratory plow line or Vapam barrier, followed by (2) removal of all living red oaks inside the barrier, and sanitary treatment of wood capable of producing fungal mats. Use of a reference table developed for proper barrier location is described. Epicenters are established by insect vectors, often as a consequence of human activity. Establishment of epicenters can be prevented by: (1) sanitary treatment of diseased trees which may yet produce mats, (2) discouraging unsupervised movement of diseased wood, (3) minimizing the wounding of oaks during the spring and early summer, and (4) immediately painting all spring and summer wounds on oak trees with a tree wound dressing. Detection of new epicenters is important. Treatment of small epicenters minimizes site disturbance and the number of fungal mats produced, as well as the number of trees lost. Systematic aerial surveillance is useful for effective detection in large acre-ages of oak type. Prevention is the best control measure. Unfortunately, public relations are often inadequate. North. J. Appl. For. 9(2):47-51

Document Type: Journal Article

Affiliations: Region I Headquarters, Michigan Department of Natural Resources, 1990 U.S. Highway 41 South, Marquette, MI 49855

Publication date: June 1, 1992

More about this publication?
  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Northern Journal of Applied Forestry covers northeastern, midwestern, and boreal forests in the United States and Canada.
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