What are beneficial microbes for plant growth?

Key beneficial microbes: Rhizobium (fixes nitrogen in legume roots), Azospirillum (fixes atmospheric nitrogen for grasses and vegetables), Trichoderma (suppresses soil-borne fungal diseases), and mycorrhizal fungi (extend root reach for water and phosphorus). Available as biofertiliser granules or liquid inoculants from agri input shops at ₹50–150 per pack.