Which of the following crops is helpful in nitrogen fixation?

Beans are helpful in nitrogen fixation. They belong to the legume family, which forms a symbiotic relationship with nitrogen-fixing bacteria such as Rhizobium in their root nodules. These bacteria convert atmospheric nitrogen into ammonia, a form of nitrogen that the plant can use for growth. This process enriches the soil with nitrogen, benefiting both the legume crop and subsequent crops grown in the same soil. By improving soil fertility, beans play a vital role in sustainable agriculture and crop rotation practices. The ability of beans to fix nitrogen reduces the need for synthetic nitrogen fertilizers, promoting more environmentally friendly farming methods. In contrast, rice, wheat, and corn do not have the same nitrogen-fixing abilities as beans. Therefore, beans are an excellent choice for enhancing soil health and supporting agricultural productivity.