Question

Explain the main features of alluvial soil.

Answer 1

1. Rich in Minerals:

   1. This soil contains essential nutrients such as potash, phosphoric acid, and lime, which are vital for plant growth.
   2. Its high natural fertility makes it the most productive soil type for large-scale agriculture.

2. Suitable for Agriculture:

   1. It provides the perfect environment for growing major crops like wheat, rice, sugarcane, and pulses.
   2. The high productivity of this soil helps in achieving better crop yields for farmers.

3. Deposited by Rivers:

   1. It is formed by the continuous deposition of silt and sediments by major rivers like the Ganga, Brahmaputra, and Indus.
   2. This soil is primarily found in the Indo-Gangetic plains, river valleys, and coastal deltas.

4. Types: Khadar and Bhangar:

   1. Khadar is the new alluvium, which is very fine, highly fertile, and is found near riverbanks.
   2. Bhangar is the older alluvium, which has a coarser texture and contains kankar (calcareous nodules).

5. High Moisture Retention:

   1. The soil has a good capacity to retain water, which helps in supporting crops through different seasons.
   2. It is highly suitable for the cultivation of both Rabi and Kharif crops.