Which one of the following organisms can serve as a biofertilizer for rice crop?

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Blue-green algae. Cyanobacteria (Blue-green algae) are one of the major components of the nitrogen fixing biomass in paddy fields. The agricultural importance of cyanobacteria in rice cultivation is directly related with their ability to fix nitrogen and other positive effects for plants and soil.Therefore Blue-green algae acts as biofertilizer for rice crop.

Which one of the following organisms can serve as a biofertilizer for rice crop?

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