Rice Crop Fertilizer Management Quiz
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Questions and Answers

What is the recommended NPK ratio for Aman (kharif) crop fertilizer management?

  • 80:40:40
  • 120:70:70
  • 100:60:60 (correct)
  • 60:30:30

    • Why should nitrate fertilizers be avoided in paddy fields?

  • They are more cost-effective.
  • They promote rapid growth.
  • They increase soil moisture retention.
  • They are susceptible to nitrogen loss. (correct)

    • What is the estimated contribution of biological nitrogen fixation by biofertilizers to rice nitrogen requirements?

  • 15-20%
  • 25-30% (correct)
  • 30-35%
  • 10-15%

    • What is the first symptom of zinc deficiency that may lead to Khaira disease in rice?

    <p>Leaves becoming yellow and drying</p> Signup and view all the answers

    How is the management of Khaira disease achieved in rice?

    <p>By spraying zinc sulphate at the nursery stage</p> Signup and view all the answers

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