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Topsoil

(i) The layer of soil moved in cultivation. Frequently designated as the Ap layer or Ap horizon. See also surface soil. (ii) Presumably fertile soil material used to topdress roadbanks, gardens, and lawns.

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Related terms

topsoil
Earth science; Soil science

(i) The layer of soil moved in cultivation. Frequently designated as the Ap layer or Ap horizon. See also surface soil. (ii) Presumably fertile soil material used to topdress ...

topsoil
Engineering; Civil engineering

The topmost layer of soil, usually containing organic matter. Usually refers to soil containing humus which is capable of supporting plant growth.

topsoil
Garden; Gardening

Soil that is on the very top, hopefully containing a lot of humus and good elements needed for growth.

topsoil
Horticulture; General

The top layer of native soil. This term may also apply to good quality soil sold at nurseries and garden centers.

topsoiling
Language; Dictionaries

The act or art of taking off the top soil of land before an excavation or embankment is begun.

topsoil
Language; Dictionaries

The upper layer of soil; surface soil.

swamp
Earth science; Soil science

Swamp is an area which is flooded or drenched with water and related to plunge or cause to sink.

semiarid
Earth science; Soil science

Fairly dry because of low rainfall. Semiarid regions, such as a prairie, usually have enough water for grasses and some bushes to grow.

talus
Earth science; Soil science

A sloping pile of small pieces of rock that is at the base of a cliff is called talus.

silt
Earth science; Soil science

Small grains or particles of broken down rock. Silt particles are smaller than grains of sand but larger than the particles in clay.

talc
Earth science; Soil science

A very soft, white or green mineral found in igneous and metamorphic rocks is called talc.

stone
Earth science; Soil science

A general term for rock, especially as used in construction. A hard clump of minerals that forms in a part of body.

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