Question

nitrogen is an essential nutrient for plant growth.but farmers cultive pluse crop like green gram,bengal gram,black grametc.do not apply nitrogens fertizers during culivation.why?

Answer 1

These crops are called leguminous crops. Bacterias called rhizomes are present in roots of these crops. These rhizomes have the capability to fix atmospheric nitrogen into its usable forms. Therefore, farmers don't add nitrogen fertilizers during cultivation.