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प्रश्न
State any three benefits of Biofertilizers.
Write the benefits of biofertilizer.
लघु उत्तरीय
उत्तर
- Low cost and can be used by marginal farmers.
- Free from pollution hazards.
- Increase soil fertility.
- BGA as biofertilizers secret growth promoting substances, organic acids, proteins and vitamins.
- Azotobacter supply nitrogen and antibiotics in the soil.
- Biofertilizers increase physico-chemical properties of soil- like texture, structure, pH, water holding capacity of soil by providing nutrients and organic matter.
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Notes
Students should refer to the answer according to their questions.
Microbes as Biofertilizers
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
संबंधित प्रश्न
How do biofertilisers enrich the fertility of the soil?
What are 'biofertilizers'? Explain them with suitable examples.
What is a heterocyst?
______ associated with plants like Azolla and Cycas can be used as a biofertilizers.
State any three benefits of mycorrhiza.
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 |
Match the Column I (Organisms) with the Column II (Products they produce) and select the correct option.
| Column I | Column II | ||
| i. | Lactobacillus | p. | Cheese |
| ii. | Saccharomyces cerevisiae | q. | Curd |
| iii. | Aspergillus niger | r. | Citric Acid |
| iv | Acetobacter aceti | s. | Bread |
| t. | Acetic Acid |
By application of ____________ yield of paddy field can be increased.
VAM stands for ______.
Match the pairs:
| Column A | Column B | ||
| (i) | Compost making biofertilizer |
(a) | Azotobacter |
| (ii) | N2 fixing biofertilizer | (b) | Mycorrhiza |
| (iii) | Fungal biofertilizer | (c) | Agrobacterium |
| (iv) | Phosphate solubilizing biofertilizer |
(d) | Actinobocteria |
