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Question
What are 'biofertilizers'? Explain them with suitable examples.
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Solution
Biofertilizers: The biofertilizers are nitrogen fixing microbes or fungi which enrich the soil with nutrients.
There are 3 major types of biofertilizers i.e. bacterial biofertilizers, cyanobacterial biofertilizers and fungal biofertilizers.
Examples of biofertilizers:
- Nitrogen-fixing symbiotic bacterial biofertilizer - Rhizobium in root nodule of leguminous plants.
- Nitrogen-fixing symbiotic cyanobacterial biofertilizers - Anabaena azollae in Azolla.
- Nitrogen-fixing non-symbiotic cyanobacterial biofertilizers - Nostoc, Anabaena.
- Mycorrhizal Fungal biofertilizer - Ectotrophic mycorrhiza and Endotrophic mycorrhiza - VAM.
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RELATED QUESTIONS
Define biofertilizers. Give two types of fungal biofertilizers
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Blue green algae are used as bio fertilizers because they ____________.
In plant breeding, biofortification is a method ____________.
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Farmers are often suggested to use the following organism in their crop land so as to improve the soil fertility. Explain.
Rhizobium
Farmers are often suggested to use the following organism in their crop land so as to improve the soil fertility. Explain.
Anabaena
