Azotobacter is a genus of free-living bacteria found in soil and water. These bacteria are known for their ability to fix atmospheric nitrogen, converting it into a form that plants can use for growth. This process is essential for maintaining soil fertility and supporting agricultural productivity. In addition to nitrogen fixation, Azotobacter also produces substances that can promote plant growth, such as hormones and vitamins. They play a crucial role in the ecosystem by enhancing nutrient availability and improving soil health, making them important for sustainable farming practices.