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A biofertilizer used in paddy fields is:

A biofertilizer used in paddy fields is: Correct Answer Azolla pinnata

The correct answer is Azolla pinnata.

Explanation:

  • Bio fertilisers (eco-friendly bioproducts) are the microorganisms that enrich the nutrient (nitrogen, phosphorous, etc.) quality of the soil.
  • They help in the promotion of plant and tree growth by increasing the availability of essential nutrients to the plants.
  • A biofertilizer used in paddy fields is Azolla pinnata.
  • Azolla is a floating aquatic fern that grows in temperate climates that are ideal for paddy cultivation.
  • Azolla pinnata is high in nitrogen, making it a perfect biofertilizer.
  • Plants require nitrogen as one of the most important macro elements for their growth, and amino acid synthesis.
  • Despite the abundance of nitrogen in the environment, plants still obtain nitrogen from the soil via nitrogen-fixing bacteria.
  • Azolla is widely used as a bio-fertiliser in rice fields due to its nitrogen-fixing ability. The weeds are suppressed by inoculating the flooded rice fields with Azolla.
  • It blocks the passage of light into the water body, preventing the growth of any plants other than rice.

Thus, A biofertilizer used in paddy fields is Azolla pinnata.

Additional Information

Bacillus thuringlensis: 

  • Bacillus thuringiensis is a Gram-positive bacterium that is the most widely used biological pesticide.
  • Bacillus thuringiensis (Bt) are used in several crops like cotton.

Rhizobium meliloti:

  • Rhizobium meliloti is a Gram-negative bacterium.
  • It reduces the productivity of most crop plants by increasing the salinity of soils or water supplies used for irrigation.

Thermus aquaticus:

  • Thermus aquaticus is a bacteria species that can withstand high temperatures.

Related Questions

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