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This article in SSSAJ

  1. Vol. 27 No. 6, p. 709-714
    Received: Dec 28, 1962
    Accepted: May 16, 1963

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Site Evaluation Studies in Red Pine Plantations in Michigan1

  1. W. A. van Eck and
  2. E. P. Whiteside2



Soil productivity for planted red pine in lower Michigan was evaluated for 27 soil series in terms of dominant tree height at age 50 by aid of local site curves developed from actual growth measurements.

In the presence of soil factors favoring adequate soil moisture supply and in the absence of soil factors which limited effective soil depth, the site index and growth rate of red pine was found to be rather uniform for many coarse- and moderately coarse-textured soils.

The inadequacy of a single set of site curves for the prediction of site productivity is discussed and separate sets of curves are presented for soils causing growth patterns deviating from the normal trend.

The observed variations in height growth are associated with even greater relative differences in volume of wood produced. While variations in the quality of the wood products are also important in evaluating the productivity of forest sites, this aspect was not covered in the present study.

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