Authors: Peterson, C. E.; Hazard, J. W.

Source: Forest Science, Volume 36, Number 3, 1 September 1990 , pp. 625-640(16)

Publisher: Society of American Foresters

Abstract:

Hypothesis-testing for differences in growth responses among physiographic strata, thinning levels, and fertilizer dosage levels resulted in a set of empirical models for predicting volume increment response of even-aged coastal Douglas-fir to nitrogen fertilizer. Absolute and percent responses are estimated for stands both thinned and unthinned, as a function of dosage levels and physiographic provinces. Although not "highly" significant, the physiographic factor was retained in the models for purposes of refinement. For. Sci. 36(3):625-640.

Keywords: Research; physiographic strata; thinning; fertilizer response; predictive models

Document Type: Journal article

Affiliations: 1: Statistician, Statistical Consulting Service, 64415 Old Bend/Redmond Hwy., Bend, OR 97701

Publication date: 1990-09-01

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