soil horizon

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soil horizon

A layer of soil, approximately horizontal, which differs in structure and composition from the adjacent layers.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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The categories that were omitted to avoid perfect multicollinearity were: LFH horizon soils, very poorly drained soils, and Insch Association (parent material).
Predicting soil organic carbon percentage from loss-on-ignition using Bayesian Model Averaging
The soils with higher clay percentages retained positive scores on PC1, with sandier soils falling directly opposite (mainly A horizon soils).
Using undisturbed columns to predict long term behaviour of effluent irrigated soils under field conditions
Sulfuric horizon soils at Maloneys were generally riper, had greater development of structure and displayed more abundant and prominent Fe(III) mineral/jarosite mottling than those at Blanches.
The acid flux dynamics of two artificial drains in acid sulfate soil backswamps on the Clarence River floodplain, Australia
Seven surface horizon soils and their sand, silt, and clay fractions were characterised for mineralogy, and K release by extracting samples with 1 mM Ca[Cl.sub.2] solution daily for 10 days.
Mineralogy and potassium release from some Western Australian soils and their size fractions

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