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Estimating Illuvial Clay in Soils by Micromorphology

Authors: J. A. McKeague; R. K. Guertin; K. W. G. Valentine; J. Belisle; G. A. Bourbeau; GUELPH UNIV (ONTARIO)
Abstract:
Estimates by 10 operators of illuvial clay in thin sections of six B horizons differed widely; coefficients of variation ranged from 39 to 64%. The results cast serious doubt on the usefulness of oriented, apparently illuvial, clay in thin sections as a quantitative criterion of argillic horizons unless steps are taken to ensure a greater degree of uniformity of estimates. (AA)

Pages: 3
Report Date: JUN 1980
Report Number: E657406

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Keywords relating to this report:
ALLUVIUM
CLAYEY SOILS
Clays
Soil analysisZ
Soil analysisZAlluvium
Soil micromorphology
Soil morphology
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