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Title: A method for assessing the silvicultural effects of releasing young trees from competition.
Author: Owsten, P.W.; Greenup, M.; Davis, V.A.;
Source: Gen. Tech. Rep. PNW-GTR-191. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station
Publication Series: General Technical Report (GTR)
Description: 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
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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
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