Soil Variability—A Serious Problem in Soil-Site Studies in the Northeast
- Donald L. Mader
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.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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