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Questions
State any three benefits of Biofertilizers.
Write the benefits of biofertilizer.
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Solution
- 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.
Notes
Students should refer to the answer according to their questions.
RELATED QUESTIONS
Find out the role of microbes in the following:
Soil
What is a heterocyst?
Explain the interrelationship between organic farming and biofertilizers, with the help of any three suitable examples.
By application of ____________ yield of paddy field can be increased.
Blue green algae are used as bio fertilizers because they ____________.
Farmers are often suggested to use the following organism in their crop land so as to improve the soil fertility. Explain.
Rhizobium
- Give an example of a genus of fungi that forms mycorhizal association with plants.
- How does the plant derive benefits from this association?
Which of the following bacteria do not solubilize the insoluble rock phosphate?
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.
How do the functions of Frankia compare to those of Rhizobium in nitrogen fixation?
