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प्रश्न
What are 'biofertilizers'? Explain them with suitable examples.
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उत्तर
Biofertilizers: The biofertilizers are nitrogen fixing microbes or fungi which enrich the soil with nutrients.
There are 3 major types of biofertilizers i.e. bacterial biofertilizers, cyanobacterial biofertilizers and fungal biofertilizers.
Examples of biofertilizers:
- Nitrogen-fixing symbiotic bacterial biofertilizer - Rhizobium in root nodule of leguminous plants.
- Nitrogen-fixing symbiotic cyanobacterial biofertilizers - Anabaena azollae in Azolla.
- Nitrogen-fixing non-symbiotic cyanobacterial biofertilizers - Nostoc, Anabaena.
- Mycorrhizal Fungal biofertilizer - Ectotrophic mycorrhiza and Endotrophic mycorrhiza - VAM.
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संबंधित प्रश्न
Name the aquatic fern commonly used in paddy fields as a biofertilizer.
Explain the interrelationship between organic farming and biofertilizers, with the help of any three suitable examples.
How does the activity of each one of the following help in organic farming?
Cyanobacteria
Define estuary.
By application of ____________ yield of paddy field can be increased.
Which of the following is/are symbiotic nitrogen fixing microbe?
Anabaena forms symbiotic relationship coralloid roots of ______.
Farmers are often suggested to use the following organism in their crop land so as to improve the soil fertility. Explain.
Anabaena
Name the microorganisms involved in the production of Roquefort cheese, Camembert cheese and Swiss cheese.
Endomycorrhizae grow in ______ of higher plants.
