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biology

The common nitrogen-fixer in paddy field is _______________.

A

Azospirillum

B

Oscillatoria

C

Frankia

D

Rhizobium

Answer

The common Nitrogen fixer in the paddy field is Azospirillum. This is a soil and root bacteria. It is a nitrogen-fixing bacteria when added to the soil it multiplies and supplies 30-40Kg nitrogen per hectare per season. It also produces Indole acetic acid which helps in growth.

Hence the correct option is A.

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toppr

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