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Quiz Coffee White Stem Borer (CWSB) (354)

Quiz Coffee White Stem Borer (CWSB) (354)

This quiz is designed to test your understanding of the CWSB’s introduction, biology, and adult flight periods.

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Question 1 of 8

1. Question

In which country was the Coffee White Stem Borer (Xylotrechus quadripes) first reported, according to historical records?

A. China
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B. Vietnam
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C. India
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D. Nepal
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Question 2 of 8

2. Question

What is the maximum estimated reduction in annual coffee yields that CWSB infestation can cause in India?

A. Up to 20%
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B. Up to 40%
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C. Up to 60%
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D. Up to 80%
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Question 3 of 8

3. Question

Approximately how long does the Coffee White Stem Borer lifecycle typically last under Indian conditions?

A. 30 days
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B. 90 days
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C. About one year
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D. Two years
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Question 4 of 8

4. Question

What is the primary method by which CWSB larvae cause severe internal damage, resulting in leaf yellowing and wilting?

A. Chewing on coffee leaves and buds.
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B. Boring into the main stem and lateral branches, disrupting the vascular transport system.
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C. Attacking coffee roots, causing nutrient deficiency.
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D. Laying eggs on the fruit (berries).
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Question 5 of 8

5. Question

Which two months comprise the pre-monsoon peak period for adult CWSB emergence and flight activity?

A. January to February
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B. April to May
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C. August to September
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D. October to November
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Question 6 of 8

6. Question

Which stage of the CWSB life cycle is responsible for creating exit tunnels that mark the point of eventual adult emergence, just before its transition within the plant?

A. Egg
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B. Newly hatched larva
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C. Fully grown larva
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D. Adult beetle
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Question 7 of 8

7. Question

A key external indicator of active CWSB infestation is the presence of fine, powdery material extruded from holes in the stem. What is this material called?

A. Honeydew
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B. Frass (sawdust-like material)
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C. Latex
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D. Sclerotic tissue
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Question 8 of 8

8. Question

Which pesticide, historically the primary chemical used for CWSB management in India, has been prohibited by the Rainforest Alliance?

A. Fipronil
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B. Phenthoate
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C. Chlorpyrifos
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D. Azadirachtin
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