Regional Variation in Growth Response of Coastal Douglas-Fir to Nitrogen Fertilizer in the Pacific Northwest
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.
Document Type: Journal Article
Affiliations: Statistician, Statistical Consulting Service, 64415 Old Bend/Redmond Hwy., Bend, OR 97701
Publication date: 1990-09-01
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