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प्रश्न
Why are cyanobacteria considered useful in paddy fields?
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उत्तर
Cyanobacteria are autotrophic microbes widely distributed in aquatic and terrestrial environments many of which can fix atmospheric nitrogen e.g. Anabaena, Nostoc, Oscillatoria, etc. In paddy fields, cyanobacteria serve as an important biofertiliser. Blue-green algae also add organic matter to the soil and increase its fertility.
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संबंधित प्रश्न
Microbes can be used to decrease the use of chemical fertilisers and pesticides. Explain how this can be accomplished.
Find out the role of microbes in the following:
Soil
How do biofertilisers enrich the fertility of the soil?
What is a heterocyst?
How does the application of cyanobacteria help improve agricultural output?
Your advice is sought to improve the nitrogen content of the soil to be used for cultivation of a non-leguminous terrestrial crop.
- Recommend two microbes that can enrich the soil with nitrogen.
- Why do leguminous crops not require such enrichment of the soil?
State any three benefits of mycorrhiza.
State any three benefits of Biofertilizers.
______ are nitrogen fixing micro-organisms.
Anabaena forms symbiotic relationship coralloid roots of ______.
Which of the following symbiotic microorganisms is nitrogen-fixing?
Which one of the following is NOT a nitrogen-fixing organism?
Biofertilizers are
Mycorrhiza does not help the host plant in ______.
Which one of the following is not a nitrogen-fixing organism?
How do mycorrhizal fungi help the plants harbouring them?
Give two examples of biofertilizer.
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.
