Question

explain why a legume crops does not require nitrogenous fertilizers

Answer 1

Nitrogenous fertiliser is not added in soil in which leguminous plants are grown because the nitrogen fixing bacteria reside in the root nodules of the leguminous plants. These bacteria convert atmospheric nitrogen into soluble nitrogenous compound

Answer 2

legume crops does not need nitrogenous fertilisers because they fix nitrogen in the soil