Alluvial soils vary in nature from sandy loam to clay. They are

by

Alluvial soils vary in nature from sandy loam to clay. They are generally

poor in potash and rich in phosphorus.
poor in both potash and phosphorus.
rich in both potash and phosphorus.
rich in potash and poor in phosphorus.
This question was previously asked in
UPSC CDS-1 – 2021
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Alluvial soils are formed by the deposition of silt, sand, and clay by rivers. They are generally fertile but tend to be rich in potash and lime, while being poor in phosphorus and nitrogen. The statement “rich in potash and poor in phosphorus” accurately describes a common characteristic of these soils.
– Alluvial soils are widespread in river valleys and deltaic regions.
– Their texture varies from sandy loam to clay.
The deficiency in nitrogen and phosphorus in alluvial soils often necessitates the use of fertilizers for optimal crop production, particularly for intensive agriculture practiced in these fertile plains. The presence of adequate potash and lime contributes to their overall fertility.

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