types of bio fertilizers?what are they?
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Biofertilizers thus include the following:
symbiotic nitrogen fixers, Rhizobium spp.;
non-symbiotic, free-living nitrogen fixers (Azotobacter, Azospirillum, etc.);
algal biofertilizers (blue-green algae or blue-green algae in association with Azolla);
phosphate-solubilising bacteria;
mycorrhizae;
organic fertilizers
symbiotic nitrogen fixers, Rhizobium spp.;
non-symbiotic, free-living nitrogen fixers (Azotobacter, Azospirillum, etc.);
algal biofertilizers (blue-green algae or blue-green algae in association with Azolla);
phosphate-solubilising bacteria;
mycorrhizae;
organic fertilizers
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