Biofertilisers are micro-organisms which increases soil fertility and enhances nutrients to crop plants.
- Nitrogen fixing bacteria and Cyano bacteria Converts free N2 from atmosphere to salts of N2.
- Phosphate bacteria – Secrete phosphatase that dissolves insoluble phosphate from soil for absorption by plants.
- Mycorrhiza – occurs in forest plants solubilizes and absorbs nutrients from organic matter