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Question

Name any two main sources of biofertilizers.


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Solution

Bio fertilizers:

  1. Fertilizers promote plant and tree growth by increasing the availability of critical nutrients.
  2. These fertilizers are produced mainly by bacteria, blue-green algae (also known as Cyanobacteria), and fungi.
  3. Nitrogen-fixing bacteria are the most common.
  4. Nitrogen-fixing bacteria come in a variety of forms, including symbiotic (Rhizobium), loose association (Azospirillum), and free-living (Clostridium beijerinckii), and others.
  5. Cyanobacteria like Anabaena and Nostoc are quite important.
  6. They form a relationship with a specific plant and are in charge of nitrogen fixation in that plant.

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