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A fertile agricultural soil appears dark...

A fertile agricultural soil appears dark coloured at the surface as compared to soil one metre down. The reason for colour of top soil is

A

more moisture

B

rich in organic matter

C

rich in iron, calcium and magnesium

D

recent formation

Text Solution

Verified by Experts

The correct Answer is:
B
Dark colour of soil is due to accumulation of leached organic substances and organic matter which serves as a reservoir of nutrients and water in the soil, aids in reducing compacting and surface crusting and increases water infiltration into the soil.
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