Bio-fertilizers
For the growth of plants, all organic resources rendered in an available form by the microbes are called as bio-fertilizers. Following are some well-known bio-fertilizers.
- Legume- Rhizobium symbiosis.
- Azolla- Anabaena symbiosis.
- Loose association of nitrogen fixing bacteria.
- Diazotrophs
- Cyanobacteria
- Mycorrhiza
- Phosphate solubilizing bacteria & fungi
- Frankia
- Green manure