Biofertilizers: 20 flashcards
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1. What are biofertilizers?
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Biofertilizers are substances that contain living microorganisms which promote plant growth by increasing the availability of nutrients.
2. Why are biofertilizers important for marginal farmers?
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They are easy to produce in abundance and available at low cost.
3. How do biofertilizers affect soil fertility?
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They increase soil fertility without causing any damage to the soil.
4. Name one example of a biofertilizer.
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Rhizobium.
5. What is another example of a biofertilizer?
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Azospirillum.
6. Give one more example of a biofertilizer.
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Azotobacter.
7. What is a key benefit of using biofertilizers?
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They improve nutrient availability in the soil.
8. Do biofertilizers have any negative impact on the soil?
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No, they do not cause any damage to the soil.
9. How can biofertilizers be produced?
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They can be produced through fermentation processes using specific microorganisms.
10. What role do microorganisms play in biofertilizers?
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They help in the fixation of atmospheric nitrogen and enhance soil fertility.
11. What is the economic advantage of biofertilizers?
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They reduce the need for chemical fertilizers, lowering overall farming costs.
12. Are biofertilizers environmentally friendly?
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Yes, they are eco-friendly and promote sustainable agriculture.
13. What is the primary function of Rhizobium?
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Rhizobium fixes nitrogen in the root nodules of legumes.
14. What type of plants benefit from Azospirillum?
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It primarily benefits cereal crops and grasses.
15. What is a significant advantage of using Azotobacter?
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It can fix nitrogen independently in the soil without a host plant.
16. Can biofertilizers be used alongside chemical fertilizers?
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Yes, they can be used in conjunction with chemical fertilizers for better results.
17. What is the impact of biofertilizers on crop yield?
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They can significantly increase crop yield by improving soil fertility.
18. What is the primary nutrient that biofertilizers help to enhance?
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Nitrogen availability in the soil.
19. How do biofertilizers contribute to sustainable agriculture?
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They reduce reliance on chemical fertilizers and enhance soil health.
20. What is the relationship between biofertilizers and soil microorganisms?
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Biofertilizers introduce beneficial microorganisms that enhance nutrient cycling.
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