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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
Give one geographical reason for the following:
Laterite soil is red in colour.
Mention two differences between Alluvial Soil and Black Cotton Soil.
Name the soil which is acidic in nature.
Give geographical reasons for the following:
Khadar is more fertile than banghar soil.
Give the geographical reason for different regions in India having different kinds of soil.
State two differences between Bhangar and Khadar soil.
Answer the following questions in about 30 words.
What type of soil is found in the river deltas of the eastern coast? Give three main features of this type of soil.
Give a geographical reason for each of the following:
Wind is a common agent of soil erosion in arid regions.
name two states of India where this type of soil is found.
What do you mean by ‘Soil’?
Which two types of Soils are the most important Soils?
Name the important crops grown on it.
How is the Alluvial Soil found in the Ganga plain different from that found in the Godavari valley?
What is Black Soil?
What are mineral deficiencies of Red Soil? How can they be corrected?
How is Regur Soil formed? Mention four important features of Regur Soil.
Why are Alluvial Soil agriculturally important?
Name one state in India which mostly has Red Soil.
Why is Laterite Soil not suitable for agriculture?
Alluvial soil and red soil.
Give a single word for the following:
The loose rock material, together with humus, forming the uppermost layer of the earth’s crust and serving a source of food and moisture for plants.
Name the transported Soil most widely found in India. State the two sub-categories into which it is generally divided. What are their local names and which one of them is superior to the other.
What is the need and importance of soil testing from the point of view of farmers?
Give information on:
Measures of soil conservation.
The soil which contains a bigger-sized particle is ______.
Which one of the following term is used to identify the old and new alluvial respectively?
Which of the following soils has self-aeration capacity?
On an outline map of India, mark the areas covered by the following soil categories.
(i) Red soil
(ii) Laterite soil
(iii) Alluvial soil.
Soil has particles of different sizes. Arrange the words given below in increasing order of their particle size.
| Rock, Clay, Sand, Gravel, Silt |
