Modern farmers can increase the yield of paddy crops by more than $50\%$ through the use of:

  • A
    Cyanobacteria
  • B
    Rhizobium
  • C
    Cyanobacteria in Azolla pinnata
  • D
    Farmyard manure

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Which of the following is an example of a biofertilizer?

Which of the following bacteria is free-living?

Which nitrogen-fixing microorganism is associated with Azolla in paddy fields?

In paddy fields, . . . . . . serves as an important biofertiliser.

Which of the following helps plants in the absorption of phosphorus from the soil?

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