bio fertilizer elements are
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Answer:
microorganisms ..........
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Answer:
Mainly BGA(blue green algae) also known as cyanobacteria
Explanation:
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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