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प्रश्न
How does the application of cyanobacteria help improve agricultural output?
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उत्तर
Cyanobacteria are free living or symbiotic blue green algae which are capable of converting atmospheric molecular nitrogen into soluble forms like nitrites or nitrates. They enrich the nitrogen content of the soil, thus, acting as a natural fertilizer. They replenish the soil with the nitrogenous compounds and hence are useful in agriculture.
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संबंधित प्रश्न
Explain the interrelationship between organic farming and biofertilizers, with the help of any three suitable examples.
Match the column A with B and rewrite correct pairs.
| A | B | |
| i. | Symbiotic N2 fixing bacteria | VAM |
| ii. | Free-living N2 fixing bacteria | Rhizobium |
| iii. | Phosphate solubilizer | Nostoc |
| iv. | Endomycorrhizae | Microccocus |
Identify the CORRECT statement regarding Mycorrhiza.
Which of the following is one of the basic elements considered in green revolution?
Which of the following statements are CORRECT regarding Anabaena and Frankia?
Blue green algae are used as bio fertilizers because they ____________.
Which one of the following statement is correctly matched?
Azolla is used as biofertiliser because it ______.
How many statements are true about biofertilizers?
- They are nitrogen fixers.
- They are commercial preparation of live bacteria and fungi.
- Use of biofertilizers is expensive.
- There is only one type of biofertilizer.
- They are classified as inorganic.
Which of the following is NOT a primary benefit of using biofertilizers in agriculture?
