Question

5 point on Alluvial soil ​

Answer 1

Answer:

★ Alluvial soil is the main and important soil that spreads across the river plains.

★ Alluvial soil is very fertile.

★ It is most suitable for agriculture.

★ It is also known as riverine soil.

★ Alluvial soils are transported soils.

★ They are formed by deposition of materials or sediments (alluvium) brought in down by rivers that consist of silt, sand, clay, etc.

★ They have been deposited by the Indo-Gangetic-Brahmaputra rivers (the Indus, the Ganga and the Brahmaputra rivers) which are the three important rivers of Himalaya.

★ Some of them have been formed by the sea waves or due to wave action in the coastal areas or regions.

★ They are the largest soil group of India that cover about 15 lakh square kilometres (about 40% of the total land of the country).

★ Rice, wheat, cotton, maize, sugarcane, jute, tobacco, oil seeds, millets, pulses, vegetables and fruits, etc. are the crops that grown in it.

★ It is found in the plains of northern India (Punjab, Haryana, Uttar Pradesh, Bihar, West Bengal, Assam and Orissa), the delta reigons of southern India, the river basin and the deltas of rivers (the Mahanadi, the Godavari, the Krishna and the Cauvery).

★ Alluvial soils which are found in the deltas of river are called deltaic alluvium (coastal alluvium).

★ There are two types of alluvial soil:-

• Khadar (New alluvium)

☆ It is more fertile than the Bhangar.

☆ It does not contain calcareous deposits (kankars).

• Bhangar (Old alluvium)

☆ It is less fertile than the Khadar.

☆ It contains calcareous deposits (kankars).

Answer 2

Answer:

1. Found mostly in Northern plains.

2. There are two types of Alluvial soil:

Bangar and khadar.

3. Alluvial soil are most fertile soil.

4. Good for growing sugarcane, wheat etc.

5. Chemicals it includes are potash, lime etc.

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