what are biofertilizers Give a suitable example
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Biofertilizers such as Rhizobium, Azotobacter, Azospirilium and blue green algae (BGA) have been in use a long time. Rhizobium inoculant is used for leguminous crops. Azotobacter can be used with crops like wheat, maize, mustard, cotton, potato and other vegetable crops.
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The term biofertilizer denotes all the nutrient inputs of biological origin (microbes producing nitrogen compounds) for plant growth. Biofertilizers are organisms that enrich the nutrient quality of the soil. The main sources of biofertilizers are bacteria, fungi, and cyanobacteria (blue-green algae). E.g.: Azotobacter, Rhizobium.
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