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This article in SSSAJ

  1. Vol. 27 No. 6, p. 707-709
     
    Published: Nov, 1963


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doi:10.2136/sssaj1963.03615995002700060040x

Soil Variability—A Serious Problem in Soil-Site Studies in the Northeast1

  1. Donald L. Mader2

Abstract

Abstract

The degree of variability and its effect on accuracy of mean plot values for soil properties is an important problem needing evaluation for soil-site studies in the Northeast. This paper discusses the variability in soils sampled in a red pine plantation site study. Two profiles were sampled by horizon on each plot. Data are presented on the following soil properties: organic matter, N, silt and clay, exchangeable Ca plus Mg, cation-exchange capacity, and bulk density. Variability between plots was much greater than within plots. Some soil properties required a large number of samples for accurate estimation, others a small number. Variation did not differ greatly from A to B horizons.

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