Question

black soil retains moisture for long period because it​

Answer 1

Answer:

Cotton cultivation requires high moisture retention. Black soils are very fine grained and dark, contain a high proportion of calcium and magnesium carbonates and highly argillaceous. When wet, they are very tenacious of moisture and exceedingly sticky.

Explanation:

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Answer 2

black soil retains moisture for long period because it has high clay content and it is very fertile