Increasing soil fertility

Question 1 State one important function performed by rhizobium and blue green algae?

Question 2 Name one biological nitrogen fixer?

Question 3 Name the micro-organism which can fix atmospheric nitrogen in the soil?

Question 4 How do micro-organism help in increasing soil fertility?

Increasing soil fertility

Some of the micro-organism present in the soil can fix nitrogen gas from the atmosphere to form nitrogen compounds.

These nitrogen compounds mix with the soil and increase the fertility of soil.

Some bacteria like rhizobium and blue green algae are able to fix nitrogen gas from the atmosphere to enrich the soil with nitrogen compounds and increase its fertility.

The nitrogen-fixing bacteria and blue green algae are called biological nitrogen fixers.

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