Question

how is nitrogen replaced naturally in soil

Answer 1

Legumes form a symbiotic relationship with bacteria in the soil that allows them to draw nitrogen from the atmosphere. ... Legumes are commonly planted on nitrogen-deficient soils and then plowed into the ground where the nitrogen absorbed from the air is released into the soil as the plants decay.

Answer 2

Answer:

Adding manure like cow dung, decayed leaves etc. By sowing leguminous crops like peas. These leguminous plants contain nitrogen-fixing bacteria in their roots that help them to fix atmospheric nitrogen and thus enrich the soil.

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