b) Give reason:
1. Alluvial soils are extremely fertile.
2. Khaddar is more fertile than bangar
Answers
Answer:
Aulluvial soil: Alluvium soil is formed by the sediments brought down by rivers. The soil is fertile as it consists of very fine particles and is rich in potash, phosphoric acid and lime. Clayey soil like alluvium has moisture retentive capacity. (Water molecules can hold fine particles of clay more tightly).
Khadar soil is more fertile than Bangar soil because : a. Khadar is new alluvium deposited by the rivers in their flood plains. Bangar is older alluvium found in upland area above the flood plains, Bangar is older alluvium which is not renewed by the floods.
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Answer:
Aulluvial soil: Alluvium soil is formed by the sediments brought down by rivers. The soil is fertile as it consists of very fine particles and is rich in potash, phosphoric acid and lime. Clayey soil like alluvium has moisture retentive capacity. (Water molecules can hold fine particles of clay more tightly).
Khadar soil is more fertile than Bangar soil because : a. Khadar is new alluvium deposited by the rivers in their flood plains. Bangar is older alluvium found in upland area above the flood plains, Bangar is older alluvium which is not renewed by the floods.
Explanation: