ABSTRACT This research aims to study the response of soybean plants to the application of Azotobacter sp. and nitrogen fertilization time, and get a combination of Azotobacter sp. with a good nitrogen fertilization time to increase the growth and production of soybean plants. The first factor was Azotobacter sp. concentration, consisting of 3 levels: without Azotobacter sp., Azotobacter sp. (1…