What is the common nitrogen fixer in paddy fields

The common nitrogen-fixer in paddy fields is azospirillum.

Classification

Following is the scientific classification of azospirillum:

  • Kingdom: Bacteria
  • Phylum: Proteobacteria
  • Class: Alphaproteobacteria
  • Order: Rhodospirillales
  • Family: Rhodospirillaceae

Properties

Listed below are the properties of azospirillum nitrogen fixation bacteria

  • It is a gram-negative, non-fermentative, microaerophilic, nitrogen-fixing bacteria.
  • It also has the capacity to synthesize phytohormones specially indole-3-acetic acid and gibberellins.
  • Helps in promoting root proliferation.
  • When a small amount of it is added to the soil, it multiplies into million and is capable of providing up to 20-40kg of nitrogen per hectare per season.

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