Question

Nitrogen is an essential nutrient for plant growth But farmers who cultivate pulse crops like green gram,bengal gram, black gram etc. Do not apply nitrogenous fertillizers during cultivation. Why?​

Answer 1

Explanation:

Roots of pulses (leguminous plants) have a symbiotic association with a bacterium called Rhizobium which fixes nitrogen. Hence, farmers need not use nitrogenous fertilisers.