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What are bio fertilizers

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What are bio fertilizers

    • Posted by Vishal Depp 7 years, 1 month ago

    CBSE > Class 12 > Biology
    • 1 answers

    Yogita Ingle 7 years, 1 month ago

    Biofertilizers are organisms that enrich the nutrient quality of the soil.

    The main sources of biofertilizers are bacteria, fungi and cyanobacteria.

    Some microbes used as biofertlizers are-

    • Rhizobium form root nodules in leguminous plants and fix atmospheric nitrogen into organic forms, which is used by the plant as nutrient.
    • Free living bacteria like Azospirilium and Azotobacter fix atmospheric nitrogen, hence increases nitrogen content of the soil.
    • Many members of the genus Glomus form Mycorrhiza, which is the symbiotic association of fungi with roots of the plants.

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