soil horizon

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soil horizon

A layer of soil, approximately horizontal, which differs in structure and composition from the adjacent layers.
References in periodicals archive ?
Effect of previous exposure to triazide herbicide on the percentage of atrazine mineralised after 96 days in Twyford A horizon soil at 22 [degrees] C or 16 [degrees] C and at 20%, 50%, or 100% of the maximum water-holding capacity (MWHC)
The categories that were omitted to avoid perfect multicollinearity were: LFH horizon soils, very poorly drained soils, and Insch Association (parent material).
Even though the majority of A horizon soils had been removed before soils were placed in columns, the sandy horizons in columns 3, 9, 10, 11, and 12 were clearly differentiated and opposite the %clay variable.
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.
14 gpt, in C horizon soils, 5 kilometres east of the Western Gold Zone.
05 grams per tonne (gpt), has been detected in C horizon soils - The new gold zone lies 1.