How do leguminous plants increase the soil fertility?
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Answer: they increase soil fertility as the provide soil with rhizobium bacteria to the soil.This bacteria contains nitrogen in it and is very helpful for other plant and soil too!
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In the roots nodules of leguminous plants there is bacteria present called rhizobium bacteria . It absorb nitrogen gas from the atmosphere and convert it into simple nitrogenous compound called nitrates . After harvesting when the roots decompose the nitrates present in the roots nodules mix with this soil and enrich it with the nitrogenous compounds and hence increase the soil fertility .
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