Geography
Explain the following terms : topsoil, in situ, bangar, khadar, humus.
Soil Resources
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Answer
Topsoil — The uppermost fertile layer of soil, which is used for cultivation is called Topsoil.
In situ — It means 'at its original place'. It refers to anything which is formed where it is found. For example the black soil is formed in situ.
Bangar — The older alluvium is called as Bangar soil. They are darker in colour. They contain kankar, pebbles and gravels.
Khadar — The newer alluvium is called Khadar soil. They contain fine sand and clay. They are pale brown in colour. They are replenished by the floods.
Humus — The organic matter which is found in the soil is called Humus. It is formed by decaying remains of plants and animals
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