The common nitrogen fixer in paddy fields is
Correct answer: B. Azospirillum
- A. Rhizobium
- B. Azospirillum
- C. Oscillatoria
- D. Frankia
Explanation
Azospirillum is an anaerobic nitrogen-fixing bacteria that forms loose associations with the roots of some plants. Inoculation of paddy fields with these bacteria helps in increasing yield and saving nitrogen fertilizers
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