Question

leguminous plants help to increase nitrogen content of the soil. explain

Answer 1

leguminous plants contain rhizobium bacteria which can convert atmospheric nitrogen into a usable form for plants.They replenish the nitrogen in the soil and help maintaining the soil fertility.Example of leguminous plant is pea

Answer 2

The leguminious plants contain certain bacteria which is called rhizobium.They convert the free atmospheric nitrogen into useful nitrogen compounds.When these plants die the farmers use this plants to give the nitrogen to plants.And by this the nitrogen compounds is increased in the soil.
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