Topsoil
noun
1.
the fertile, upper part of the soil.
verb (used with object)
2.
to cover (land) with topsoil.
noun
1.
the surface layer of soil
verb (transitive)
2.
to spread topsoil on (land)
3.
to remove the topsoil from (land)
topsoil
(tŏp’soil’)
The upper portion of a soil, usually dark colored and rich in organic material. It is more or less equivalent to the upper portion of an A horizon in an ABC soil.
topsoil definition
The thin, rich layer of soil where most nutrients for plants are found.
Note: Most of the land-based biological activity of the Earth takes place here.
Note: The loss of topsoil through erosion is a major agricultural problem.
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