Date of Award:
Master of Science (MS)
Plants, Soils, and Climate
Department name when degree awarded
James P. Thorne
Soil classification in this country is based on the system proposed by Marbut in 1920 (2). This system uses eight criteria, one of which is the chemical composition of the soil horizons. Workers in the field of soil survey are depending more and more upon laboratory data to characterize and differentiate soils not only at the series level but also at higher levels of classification where it may be necessary to establish the presence or absence of critical horizons or characteristics. This was predicted by Robinson (16) when he said that laboratory analysis is needed to give "precise physical meaning to field descriptions" and that the importance of laboratory data increases as the classification of soils becomes more minute
Hale, Verle Q., "Some Chemical Properties of the Profiles of Two Soil Series as Shown by Horizons and by Increments" (1958). All Graduate Theses and Dissertations. 2230.
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