A method for assessing the silvicultural effects of releasing young trees from competition.

P.W. Owsten; M. Greenup; V.A. Davis

doi:10.2737/PNW-GTR-191

Treesearch

A method for assessing the silvicultural effects of releasing young trees from competition.

Informally Refereed

Authors:

P.W. Owsten, M. Greenup, V.A. Davis

Year:

1986

Type:

General Technical Report

Station:

Pacific Northwest Research Station

DOI:

https://doi.org/10.2737/PNW-GTR-191

Source:

Gen. Tech. Rep. PNW-GTR-191. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station

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Download (PDF 2.16 MB): https://research.fs.usda.gov/download/treesearch/9279.pdf

Abstract

Systematic, long-term measurements of the survival and growth effects of releasing crop trees from competing vegetation are important for evaluating vegetation management treatments in forest plantations. This report details field-tested procedures for use in any type of release treatment—mechanical, manual, biological, or chemical. The basic concept is to delineate one untreated plot within each plantation to be monitored and to compare survival and growth on that "control" plot with survival and growth on a treated plot that is similarly delineated. Each installation should be examined periodically for a 5- to 10-year period. Sample data forms with partially completed examples are included.

Keywords

Vegetation management, plant competition, plantation release

Citation

Owsten, P.W.; Greenup, M.; Davis, V.A. 1986. A method for assessing the silvicultural effects of releasing young trees from competition. Gen. Tech. Rep. PNW-GTR-191. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station