Why are cyanobacteria considered useful in paddy fields?

  • A
    They act as biofertilisers by fixing atmospheric nitrogen.
  • B
    They act as pesticides to kill harmful insects.
  • C
    They increase the soil pH to make it alkaline.
  • D
    They help in the decomposition of chemical fertilizers.

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Similar Questions

Which substance of biological origin is used to maintain and increase soil fertility?

Which of the following is a free-living biofertilizer?

Which of the following is a biofertilizer reported to increase rice production by more than $50\%$?

Which organism is highly useful for soil fertility?

Farmers have reported $50\%$ higher yield of rice by using which biofertilizer?

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