
Rhizobium species were isolated from the rhizosphere soil of maize plants and studied for their ability to produce bacteriocins. Rhizobium, a nitrogen fixing bacteria can live in the rhizosphere soil of non-leguminous plants, exist freely and entraps atmospheric nitrogen and converts the unreactive nitrogen molecule to ammonia, a form that is readily utilize by plants. Rhizosphere soil from maize plants were collected from Lalgudi Taluk, Trichy District and identified based on their morphological and biochemical characters. The efficient strains were used for the production of bacteriocin.