Consider the following statements 1 The alluvial soils vary from sandy loam to clay i...........

Geography World - Soil and Vegetation

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Consider the following statements :

1. The alluvial soils vary from sandy loam to clay in texture.

2. The alluvial soils are generally rich in phosphorus but poor in potash

3. The alluvial soils are fine grained.

4. The alluvial soils are most fertile soils.

Which of the above statements are NOT true of alluvial soils ?

1, 2

1, 3

3 , 4

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Explanation:

Alluvial soils are very rich in chemicals like Potash, Phosphoric acid, lime and carbon compounds but are deficient in Nitrogen and humus.

Alluvial soils cover 24% of land surface in India and is found in Indo Ganga – Brahmaputra plain, coastal plains and river valleys. These are also found in foothills regions in plenty. It contains sand, loam and clay in different proportion.
There are two types of alluvial soils:
Khadar – which are newer alluvium. it is the soil deposited by the rivers every year. It is more fertile than the Bangar.
Bangar – which are older alluvium. It contains pebbles and calcium carbonates.