Which of the following is used as a biofertiliser?
Rhizobium
Microbial fertilisers are substances that contain microorganisms which help to increase the fertility of the soil. Bacteria like Rhizobium, Azotobacter, and Azospirulum are used as biofertilisers. Salmonella and Clostridium are pathogenic microorganisms. Lactobacillus is a useful bacterium which helps in making curd and cheese.