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subsoil1799, from sub- + soil (n.).
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subsoilthe soil layer that supports the surface soil and acts as the soil reservoir, providing storage space for water and nutrients for plants, aiding in temperature regulation of the soil, and supplying ai [..]
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subsoila light-colored soil layer usually found beneath the topsoil. It contains little or no humus.
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subsoilThe infertile layer of soil below the topsoil, lacking in humus and plant nutrients.
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subsoilThe soil below the fertile top layer.
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subsoilsoil in the B horizon made mostly of clay and some humus. substance -
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subsoil(n) the layer of soil between the topsoil and bedrock
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subsoilThe layers of soil below the topsoil.
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subsoil – The part of the soil profile beneath the surface soil that has been altered from its original geologic characteristics. In many instances, it is called a ‘B horizon’.
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subsoilMineral-bearing soil located beneath humus-containing topsoil.
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subsoilThe layer or bed of earth beneath the topsoil.
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subsoilthe undisturbed (by the plow) layer of soil lying underneath the topsoil layer on a site; usually containing no evidence of prior human activity
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