Rice Plant Growth and Irrigation
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Questions and Answers

What is the purpose of introducing water after transplanting?

  • To promote tillering
  • To increase the growth of the main stem
  • To protect the seedlings (correct)
  • To control weeds
  • At which BBCH growth stage does the first tiller typically emerge?

  • BBCH 16
  • BBCH 15 (correct)
  • BBCH 10
  • BBCH 20
  • What is the purpose of spraying herbicides in rice cultivation?

  • To promote tillering
  • To control pests
  • To control weeds (correct)
  • To increase yields
  • What is the characteristic symptom of rice plants infested with rice stem borers?

    <p>Dead hearts or whiteheads</p> Signup and view all the answers

    When should midsummer drainage or addition of water be done?

    <p>After emergence of new roots and leaves</p> Signup and view all the answers

    Why is pest control crucial in rice cultivation?

    <p>To maintain high yields and quality while minimizing economic losses</p> Signup and view all the answers

    What is the result of severe infestations of rice leaf folders?

    <p>Defoliation and reduced photosynthetic capacity</p> Signup and view all the answers

    What is the characteristic feeding damage caused by adult rice hispa beetles?

    <p>Window-pane feeding damage</p> Signup and view all the answers

    What is the purpose of applying additional nitrogen and potassium 15 to 25 days before heading?

    <p>To increase the differentiation of the glumose flowers</p> Signup and view all the answers

    What is the term for the reproductive structures of grasses, including rice plants?

    <p>Panicle</p> Signup and view all the answers

    What is the period when the panicles differentiate called?

    <p>Young panicle formation stage</p> Signup and view all the answers

    What is the machine used for harvesting in most areas?

    <p>Combine harvester</p> Signup and view all the answers

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