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प्रश्न
What are black soils? Describe their formation and characteristics.
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उत्तर
Black soils are formed by volcanoes. These soils are also known as the ‘Regur Soil’ or the ‘Black Cotton Soil’.
Features: 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, this soil develops 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.
Chemical Composition: Chemically, the black soils are rich in lime, iron, magnesia, and alumina. They also contain potash. But they lack phosphorous, nitrogen, and organic matter. The colour of the soil ranges from deep black to grey.
Areas: Black soil covers most of the Deccan Plateau which includes parts of Maharashtra, Madhya Pradesh, Gujarat, Andhra Pradesh, and some parts of Tamil Nadu. In the upper reaches of the Godavari and the Krishna, and the northwestern part of the Deccan Plateau, the black soil is very deep.
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संबंधित प्रश्न
Mention two differences between Alluvial Soil and Black Cotton Soil.
Giver a geographical reason for the each of the following:
Alluvial soil differs in texture.
State the characteristic of each of the soils named below that makes them most suitable for crop cultivation:
Black Soil
State the characteristic of each of the soils named below that makes them most suitable for crop cultivation:
Red Soil
State the geographical term for each of the following processes:
The process by which rainwater, flowing in a definite path, removes the topsoil, thus causing deep cuts to the surface of the land.
Give the geographical reason for different regions in India having different kinds of soil.
State two differences between Bhangar and Khadar soil.
With reference to Red Soils in India, answer the following questions:
State two advantages of this type of soil.
Answer the following questions in about 30 words.
What steps can be taken to control soil erosion in the hilly areas?
name two states of India where this type of soil is found.
Name the following :
An important transported soil of India.
Which two types of Soils are the most important Soils?
What is meant by ‘in Situ’?
Name the important crops grown on it.
Name one important crop that thrives best in Regur and Red Soil, and a sea-port from where it is exported.
How is the Alluvial Soil found in the Ganga plain different from that found in the Godavari valley?
What is Black Soil?
How is Black Soil formed?
Why is deltaic alluvium more fertile than coastal alluvium?
Name one state in India which mostly has Red Soil.
Alluvial soil of the northern plains and the alluvial soil on the coastal plains of India.
Maharashtra -Types and Overall Distribution of Soil
Observe the map given above and answer the following questions:
- Which soil occupies most of the area in Maharashtra?
- In which areas are laterite soils found?
- Which soil is found in the river valleys of Maharashtra?
- Which soil is found in parts of the Sahyadri ranges?
- In which region is alluvial soil found?
The alluvial soil consists of ______.
Black soil is deficient in ______.
‘Regur Soil’ is another name for the ______
What is the difference between Khadar and Bhangar?
Soil has particles of different sizes. Arrange the words given below in increasing order of their particle size.
| Rock, Clay, Sand, Gravel, Silt |
