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  1. The biofertilizer used or the paddy crops is

    2. A.

     Blue-green algae
    B.

     Rhizobium species
    C.

     Fungal root fungal
    D.

     Azetobactor species

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    Answer : Option A

    Explanation :

    The bio-fertilizers used for rice crop are Azospirillum, Phosphobacteria, Blue green algae azolla and Mycorhiza.

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