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Sample questions
To manage herbicide resistance when using Callisto, what should the user do?
- Increase the application rate of Mesotrione.
- Follow integrated weed management practices like crop rotation.
- Apply only during temperature inversions.
- Use the product exclusively as a preemergence application.
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To manage herbicide resistance, users should follow integrated weed management practices, such as crop rotation and using different modes of action.🔗 Source
In what manner does the herbicide work for weeds during the postemergence application phase?
- It is absorbed through the soil during emergence.
- It is absorbed through the leaves and/or emerging weeds.
- It is absorbed exclusively through the root system.
- It acts only through contact on the soil surface.
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When used postemergence, it is absorbed through the leaves and/or emerging weeds.🔗 Source
What is the maximum allowable wind speed for applying Callisto?
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Do not apply when wind speeds exceed 10 mph.🔗 Source
When applying Callisto as a preemergence herbicide, what is the recommendation regarding rainfall?
- Apply only when rainfall is forecasted within 48 hours.
- Ensure an activating rain of 0.25 inches occurs within 7-10 days after application.
- A minimum of 1 inch of rain must occur within 24 hours of application.
- Avoid application if any rain is expected within 7 days.
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For preemergence applications, it is recommended to ensure an activating rain (0.25 inches) occurs within 7-10 days after application.🔗 Source
To prevent injury to corn, which of the following mixing practices should be avoided when using Callisto postemergence?
- Mixing with suspension fertilizers.
- Mixing with Counter or Lorsban.
- Mixing with organophosphate insecticides within 7 days.
- Mixing with carbamate insecticides within 7 days.
Show answer
Avoid mixing with certain herbicides (e.g., Counter or Lorsban) postemergence to corn to prevent injury.🔗 Source
Which set of Personal Protective Equipment (PPE) is required when handling Callisto?
- Long-sleeved shirt, long pants, shoes plus socks, and chemical-resistant gloves.
- Long-sleeved shirt, long pants, boots, and chemical-resistant gloves.
- Long-sleeved shirt, shorts, shoes plus socks, and chemical-resistant gloves.
- Long-sleeved shirt, long pants, and chemical-resistant gloves.
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Handling requires specific Personal Protective Equipment (PPE), including long-sleeved shirts, long pants, shoes plus socks, and chemical-resistant gloves.🔗 Source
Under what weather condition should an applicator avoid applying Callisto to prevent surface water contamination?
- When wind speeds exceed 10 mph.
- When temperature inversions are present.
- When rainfall is forecasted within 48 hours.
- When temperatures are too high.
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Avoid application when rainfall is forecasted within 48 hours to prevent surface water contamination.🔗 Source
Which of the following crops is explicitly listed as a restricted site where Callisto should NOT be applied?
- Sweet corn
- Field corn
- White popcorn
- Seed corn
Show answer
Do not apply to white popcorn or ornamental (Indian) corn.🔗 Source
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