Black Soil


 
 
Concept Explanation
 

Black Soil

Black Soils: This is also known as black cotton soil or regur soil. It covers 16 per cent of India’s total geographical area. It is black in colour and best for growing the cotton crop.

Some features of Black Soil are given below:

  • It has been formed by climatic conditions and the parent rock material.
  • It is found in the Deccan trap (Basalt) region and is made up of lava flows.
  • This soil covers the plateau areas of Saurashtra, Maharashtra, Malwa, Madhya Pradesh, Chhattisgarh and also lies along the valleys of the Godavari and Krishna rivers.
  • Black soils are made up of extremely fine i.e. clayey material.
  • It is rich in nutrients like calcium carbonate, magnesium carbonate, potash and lime, but is poor in phosphoric content.
  • It develops deep cracks during the hot summer, which helps in aeration of the soil. It becomes sticky (due to high moisture retention) when wet and becomes difficult to be tilled.
  • It needs to be tilled just after the first rain or during the pre - monsoon period.
  • Map of India showing states/areas where black soil is grown:

    Sample Questions
    (More Questions for each concept available in Login)
    Question : 1

    Which of the following are correct:

    (a) Black soil is also known as regur soil or wheat soil.

    (b) Black soil is found in and around lava plateaus.

    (c) Black soil is deep and clayey soil that swells when it is wet and contracts when dry and is ideal for the growth of cotton.

    Right Option : B
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    Explanation
    Question : 2

    Which of the following are the features of black soil :

    (a)  It has been formed by climatic conditions and the parent rock material.

    (b) It is found in the Deccan trap (Basalt) region and is made up of lava flows.

    (c) Black soils are made up of extremely fine i.e. clayey material.

    Right Option : D
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    Explanation
    Question : 3

    The best soil for cotton cultivation is _______________________

    Right Option : B
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    Explanation
     
     
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