Explanation:
Gram is a leguminous crop, and like other legumes (such as beans and peas), it has a symbiotic relationship with Rhizobium bacteria found in its root nodules. These bacteria are capable of fixing atmospheric nitrogen into a form that plants can use, thereby enriching the soil with nitrogen naturally.
Other crops like wheat, mustard, and sunflower do not fix nitrogen in the soil.
So, Gram is preferred for sowing when the goal is to enhance soil nitrogen content.
Explanation by: Mr. Dubey
Gram is a leguminous crop, and like other legumes (such as beans and peas), it has a symbiotic relationship with Rhizobium bacteria found in its root nodules. These bacteria are capable of fixing atmospheric nitrogen into a form that plants can use, thereby enriching the soil with nitrogen naturally.
Other crops like wheat, mustard, and sunflower do not fix nitrogen in the soil.
So, Gram is preferred for sowing when the goal is to enhance soil nitrogen content.