The massive Northern Plains of India are formed by the continuous deposition of silt and sand brought down by Himalayan rivers like the Ganga and Brahmaputra. This deposited soil is called Alluvial Soil. Based on its age and location relative to the river, alluvial soil is classified into two distinct types: Bhangar and Khadar.
Khadar: New, young alluvial soil.
Bhangar: Old, ancient alluvial soil.
Renewal: Khadar is renewed annually by floods; Bhangar is never renewed.
Texture: Khadar is fine and smooth; Bhangar is coarse and contains 'Kankar' (calcium nodules).
Fertility: Khadar is significantly more fertile than Bhangar.
Khadar is the New Alluvial Soil.
Bhangar is the Old Alluvial Soil.
Khadar is highly fertile, new alluvial soil found near river banks and renewed yearly by floods. Bhangar is older, less fertile alluvial soil found on higher terraces containing hard calcium nodules (Kankar).
Khadar is much more fertile because it consists of fine silt that is constantly replenished by annual river floods.
Kankar are hard, impure calcium carbonate deposits found specifically in the older Bhangar soil, making it coarse and difficult to plow.
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