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    • Question

      If azolla is grown in rice field along with rice crop,

      then how much nitrogen is fixed byazolla in rice field ?
      A 10-20 kgN/ha Correct Answer Incorrect Answer
      B 20-30 kgN/ha Correct Answer Incorrect Answer
      C >50kgN/ha Correct Answer Incorrect Answer
      D 30-40 kgN/ha Correct Answer Incorrect Answer

      Solution

      Azolla is a free floating water fern which is in symbiotic association with Anabaena azollae   fixes 40-60 kg N/ha in rice fiels

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