Table 2.
Grouping of biofertilizers with functions (Umesha et al., 2018).
| No. | Nature of organisms | Functions | Examples |
|---|---|---|---|
| 1 | Free-living | Nitrogen-fixing biofertilizers | Azotobacter, Beijerinckia, Clostridium, Klebsiella, Anabaena, and Nostoc |
| 2 | Symbiotic | Phosphorus-solubilizing biofertilizers | Rhizobium, Frankia, and Anabaena azollae |
| 3 | Associate symbiotic | Azospirillum | |
| 4 | Bacteria | Bacillus megaterium var phosphaticum, Bacillus subtilis, Bacillus circulans, and Pseudomonas striata | |
| 5 | Fungi | Phosphorus-mobilizing biofertilizers | Penicillium sp. and Aspergillus awamori |
| 6 | Arbuscular mycorrhiza | Glomus sp., Gigaspora sp., Acaulospora sp., Scutellospora sp., and Sclerocystis sp. | |
| 7 | Ectomycorrhiza | Laccaria sp., Pisolithus sp., and Boletus sp. | |
| 8 | Ericoid mycorrhizae | Pezizella ericae | |
| 9 | Orchid mycorrhiza | Rhizoctonia solani | |
| 10 | Silicate and zinc solubilizers | Biofertilizers for micronutrients | Bacillus sp. |
| 11 | Pseudomonas | Plant-growth-promoting rhizobacteria | Pseudomonas fluorescens |