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Soil and Water Conservation Research Division, ARS, USDA, Temple, Texas
ABSTRACT
A method is described for rapidly obtaining large, undisturbed soil cores ranging from 16 to 38 inches in diameter and to depths of up to 9 feet. Such cores, in some cases containing several thousand pounds of soil, may be used in-place or moved to a controlled environment for a number of purposes; e.g., studies of transpiration, evapotranspiration, moisture flow, and others. In such cases, disturbed soil materials often are not satisfactory because of the influence of disturbing the soil on such properties as moisture transmission, moisture retention, and root distribution.
1 Contribution from the Soil and Water Conservation Research Division, ARS, USDA, in cooperation with the Texas Agr. Exp. Sta.
Received for publication July 6, 1964. Accepted for publication October 26, 1964.
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