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    Author(s): C.E. Peterson; J.W. Hazard
    Date: 1990
    Source: Forest Science. 36(3): 625-640
    Publication Series: Scientific Journal (JRNL)
    PDF: View PDF  (2.03 MB)

    Description

    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.

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    Citation

    Peterson, C.E.; Hazard, J.W. 1990. Regional variation in growth response of Coastal Douglas-fir to nitrogen fertilizer in the Pacific Northwest. Forest Science. 36(3): 625-640

    Keywords

    Research, physiographic strata, thinning, fertilizer response, predictive models

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