Title:

Effects of laminated root rot infection level and chemical fumigants on survival and growth of Douglas-fir near Apiary, Oregon

Author(s):

Harrington, Constance A.; Thies, Walter G.

Publication Year:

2020

How to Cite:

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Harrington, Constance A.; Thies, Walter G. 2020. Effects of laminated root rot infection level and chemical fumigants on survival and growth of Douglas-fir near Apiary, Oregon. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2020-0052

Abstract:

Laminated root rot caused by Coniferiporia weirii is a significant disease of western conifers; it is important to understand the effects of the disease on tree growth and survival and, for some management objectives, to develop treatments that will reduce those effects. This study was conducted in a 47-year-old Douglas-fir (Pseudotsuga menziesii) stand in northwest Oregon (near Apiary) between 1981 and 1991 (Harrington and Thies 2007). We evaluated the effects of root system infection on diameter and height growth, and also evaluated the effects of nine fumigation treatments on tree growth. Data include, but are not limited to, tree height, diameter at breast height, annual growths, vigor ratings and root disease infection rates.

Keywords:

farming; Natural Resource Management & Use; Forest management; tree growth; height growth; diameter growth; Douglas-fir; Pseudotsuga menziesii; laminated root rot; Phellinus weirii; Coniferiporia weirii; fumigant injection; chemical control; root infection; survival; northwestern Oregon; Columbia County; Oregon Coast Range

Related publications:

• Harrington, Constance A.; Thies, Walter G. 2007. Laminated root rot and fumigant injection affect survival and growth of Douglas-fir. Western Journal of Applied Forestry. 22(3): 220-227. https://doi.org/10.1093/wjaf/22.3.220
• Thies, Walter G.; Nelson, Earl E. 1996. Reducing Phellinus weirii inoculum by applying fumigants to living Douglas-fir. Canadian Journal of Forest Research. 26(7): 1158-1165. https://doi.org/10.1139/x26-129

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