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Fertility of the soil in rice fields can...

Fertility of the soil in rice fields can be improved by

A

Gypsum

B

Sodium chloride

C

Blue-green algae

D

Rhizobium

Text Solution

Verified by Experts

The correct Answer is:
C
Blue-green algae, a group of soil microorganisms have been shown to be agriculturally important particularly in tropical rice field soils. This is because of the capacity of some of the algae to synthesize organic substance and also to fix atmospheric nitrogen.
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