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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?

Dead hearts or whiteheads (D) Signup and view all the answers

When should midsummer drainage or addition of water be done?

After emergence of new roots and leaves (A) Signup and view all the answers

Why is pest control crucial in rice cultivation?

To maintain high yields and quality while minimizing economic losses (C) Signup and view all the answers

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

Defoliation and reduced photosynthetic capacity (B) Signup and view all the answers

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

Window-pane feeding damage (C) Signup and view all the answers

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

To increase the differentiation of the glumose flowers (A) Signup and view all the answers

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

Panicle (B) Signup and view all the answers

What is the period when the panicles differentiate called?

Young panicle formation stage (A) Signup and view all the answers

What is the machine used for harvesting in most areas?

Combine harvester (A) Signup and view all the answers

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