Which of the following pairs acts as a biofertilizer?

  • A
    Albugo and Lichen
  • B
    Frankia and Nostoc
  • C
    Pseudomonas and $E$. coli
  • D
    Spirogyra and Mucor

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$BGA$ (Blue-Green Algae) is mostly used as a biofertilizer in which crop?

What is the main source of biofertilizers?

Which one of the following is not used in organic farming?

The use of biofertilizers can reduce the consumption of chemical fertilizers containing which mineral elements?

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