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Black Soil/ Regur soil

Posted on : 11 Jan 2020

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  • The black soils are generally clayey, deep and impermeable.
  • They swell and become sticky when wet and shrink when dried.
  • So, during the dry season, these soil develop wide cracks. Thus, there occurs a kind of ‘self-ploughing’.
  • Because of this character of slow absorption and loss of moisture, the black soil retains the moisture for a very long time, which helps the crops, especially; the rain fed ones, to sustain even during the dry season.
  • Black soils are essentially mature soils which have been produced by relief and climate, rather than by a particular type of rock.
  • Chemically, the black soils are rich in lime, iron, magnesia and alumina.
  • They also contain potash. But they lack in phosphorous, nitrogen and organic matter.
  • The colour of the soil ranges from deep black to grey due to its iron content, derived from plutonic lava materials.

Article Related Questions

  1. Examine the following statements and select the correct answer using the code given below
    1.Black earth soil is locally known as Regur soil.
    2.Black soil is known as ‘tropical chernozem’.
    3.Regur soil is found in Tamil Nadu and Uttar Pradesh.
    4.Regur soil is mature soil.
    Which of the above statements are correct?

  2. 1.1, 2 and 3 only

    2.1, 2 and 4 only

    3.1, 3 and 4 only

    4.1, 2, 3 and 4

    Right Ans : 1, 2 and 4 only


  3. The 1857 Uprising was the culmination of the recurrent big and small local rebellions that occured in the preceding hundred years of British Rule. Elucidate (Answer in 150 words) - 2019 Mains


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