Question

Why is nitrogenous fertilizer not added in soil in which leguminous plants are grown​

Answer 1

Explanation:

One such bacterium is Rhizobium. ... Therefore, the nitrogen deficiency of the soil is fulfilled by the nitrogen fixed by the nitrogen-fixing bacteria present in the root nodules of leguminous plants. Hence, external supply of nitrogenous fertilizers is not required to be added in soil in which leguminous plants are grown.

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Answer 2

Answer:

in the roots of these leguminous plants, there are small bacterias called Rhizobium. Normally plants can't absorb nitrogen from the air since it's in complex form so nitrogen fertilizers are added which contain simpler form of nitrogen but in the bacteria in the root of these plants which i mentioned earlier absorbs the complex nitrogen from the air and converts it to simpler form and dilute it in the soil for the plants to absorb it, in return the food which the plant makes using it is given to this bacteria. Since this bacteria helps these leguminous plants, they don't need the fertilizer

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