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Azotobacter

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  • A dominant non-symbiotic free living heterotrophic nitrogen fixing bacteria encountered in neutral to alkaline soil not only provides the nitrogen but produce a variety of growth promoting substances. 
  • Some of these growth-promoting substances are indole acetic acid, gibberellins, B vitamins and antifungal antibiotics substances. 
  • Azotobacter chroococcum is dominant in arable soils and capable of fixing N2 10-15 kg N/ha (Johanna, 1997). 
  • The inoculants can be mixed with FYM and broadcast near the root zone. 
  • From the field experiments carried out in different part of India Azotobacter inoculants have shown to increase the yield by 3-34 % of many crops.
File Courtesy: 
R K Avasthe, Subhash Babu and Raghavendra Singh ICAR Research Complex for NEH Region
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