Gemstar LC

Which of the following is a stated restriction regarding the use of Gemstar LC?

• Do not use on Bacillus thuringiensis (Bt) transgenic crop varieties unless prohibited due to refuge requirements ✓
• Do not use on any organic production sites
• Do not apply via aerial spray in windy conditions
• Do not use on any vegetable crops containing nightshade

Answer: The restrictions section states not to use the product on Bt transgenic crop varieties unless prohibited due to refuge requirements.

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What is the Re-entry Interval (REI) for Gemstar LC?

• 4 hours ✓
• 12 hours
• 24 hours
• 48 hours

Answer: The label specifies a re-entry interval (rei_hours) of 4.

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When using Gemstar LC for chemigation, how should the product be applied?

• Inject continuously over the course of irrigation ✓
• Apply as a single heavy dose at the start of irrigation
• Apply only during the final stage of irrigation
• Mix with water and spray manually after irrigation

Answer: The mixing notes state that for chemigation, you should inject continuously over the course of irrigation.

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Under which of the following conditions should Gemstar LC be applied for effective control?

• When larvae are young (early instars) and actively feeding ✓
• Only after extensive crop damage has occurred
• During the late instar stage of larval development
• When larvae are dormant or not feeding

Answer: The label specifies that for effective control, it should be applied when larvae are young (early instars) and actively feeding.

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Which piece of Personal Protective Equipment (PPE) is required for applicators and handlers of Gemstar LC?

• Waterproof gloves, long-sleeved shirt, long pants, and shoes plus socks ✓
• Chemical-resistant apron and face shield
• Nitrile gloves and safety goggles only
• Full-body Tyvek suit and rubber boots

Answer: The PPE section requires waterproof gloves, long-sleeved shirt, long pants, and shoes plus socks.

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When preparing a spray mix, what is the recommended water pH range for Gemstar LC?

• Between 6 and 8 ✓
• Exactly 7.0 only
• Between 4 and 6
• Between 8 and 10

Answer: The mixing instructions state that water pH should be between 6 and 8.

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Which of the following pest groups is Gemstar LC specifically designed to control?

• Larvae of corn earworm, old world bollworm, and tobacco budworm ✓
• Adult moths of corn earworm and tobacco budworm
• Aphids, mites, and adult bollworms
• Egg stages of cotton bollworm and tomato fruitworm

Answer: The label states the product is designed to control the larvae of corn earworm, old world bollworm, and tobacco budworm.

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According to the label, what is the application rate for Gemstar LC per acre?

• 4-10 fl. oz. per acre ✓
• 10-20 fl. oz. per acre
• 2-4 fl. oz. per acre
• 1-5 fl. oz. per acre

Answer: The application rate listed in the label is 4-10 fl. oz. per acre.

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