Biofertilizers are used for enhancing soil fertility to increase crop yield. The micro-organisms-containing substances help soil regain its lost nutrients. Living microorganisms in biofertilizers ...

They are free-living soil bacteria that perform nitrogen fixation. They are saprotrophic anaerobes such as Clostridium beijerinckii, Azotobacter, etc. Among all the types of biofertilizers, Rhizobium ...