Farmers’ Guide: Ensuring Natural Nitrogen for Crops

Subject : Biology

Question:

Which method of growing crops can farmers use to ensure that there is a natural supply of nitrogen to crops? Explain.

Expert Verified Solution:

Farmers can use the method of crop rotation with legumes to ensure a natural supply of nitrogen to their crops. Legumes, such as beans, peas, and lentils, have a symbiotic relationship with nitrogen-fixing bacteria in their root nodules. These bacteria convert atmospheric nitrogen into a form that plants can absorb and use, effectively enriching the soil with nitrogen. When legumes are rotated with other crops, the nitrogen fixed in the soil becomes available for the following crops, reducing the need for synthetic fertilizers. This method not only enhances soil fertility but also promotes sustainable farming practices.