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ABSTRACT
Statistics including the mean, range, coefficient of variation, and standard deviation are reported for particlesize distribution, organic matter content, calcium carbonate equivalent, pH, depth of leaching, soil color, grade of soil structure, horizon thickness, and depth to mottling for 21 Morley and 38 Blount soil profiles sampled in Ohio. Of these properties, composite horizon thickness, hue and value variables of color, depth of leaching of free carbonates, silt content, and total clay content are least variable. The number of profile samples required to estimate the population mean of the above parameters within ± 10% using a .95 confidence interval was also computed. Cation-exchange data are also presented for representative Morley and Blount profiles.
1 Contribution from the Department of Agronomy, Ohio Agr. Exp. Sta. State Project 106, Jour. Paper No. 106-63; SCS, USDA; and Division of Lands and Soil, Ohio Department of Natural Resources. Presented before Div. S-5, Soil Sci. Soc. Am., Denver, Colo. Nov. 18, 1963.
2 Assistant Professor of Agronomy, Ohio Agr. Exp. Station; Correlator, SCS; and Soil Survey Supervisor, Division of Lands and Soil, Ohio Natural Resources Department, Columbus, respectively.
Received for publication December 30, 1963. Accepted for publication April 14, 1964.
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