Topflor

Which of the following is a required piece of Personal Protective Equipment (PPE) for handlers of Topflor?

• Chemical-resistant gloves made of waterproof material ✓
• Full-face respirator
• Rubber boots only
• Short-sleeved shirt

Answer: The PPE section states: 'Chemical-resistant gloves made of any waterproof material' must be worn.

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What is a specific precaution a grower should take when applying Topflor as a soil drench?

• Be aware that pine bark in the root media may reduce effectiveness ✓
• Ensure the soil is completely saturated before application
• Avoid applying to any container-grown plants
• Only apply during temperature inversions

Answer: The label states: 'When using as a drench, be aware that pine bark in the root media may reduce effectiveness.'

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Under what weather conditions must an applicator refrain from applying Topflor?

• When humidity levels are above 80%
• When wind speeds exceed 10 miles per hour or during temperature inversions ✓
• When temperatures are below freezing
• Only when heavy rain is imminent

Answer: The timing and weather conditions section states: 'Do not apply if wind speeds exceed 10 miles per hour at the application site' and 'Do not apply during temperature inversions.'

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To avoid drift and environmental contamination, where should Topflor NOT be applied?

• To areas where surface water is present or intertidal areas below the mean high water mark ✓
• To any plant grown in a container
• To any plant with high chlorophyll content
• To any plant that has already achieved compact growth

Answer: The use restrictions state: 'Do not apply directly to water or to areas where surface water is present or to intertidal areas below the mean high water mark.'

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According to the product description, what is the primary mechanism by which flurpirimod works in Topflor?

• Increasing water loss in plant leaves
• Inhibiting gibberellin biosynthesis ✓
• Promoting rapid vertical plant growth
• Increasing wind speed at the application site

Answer: The label states: 'It works by inhibiting gibberellin biosynthesis, which results in more compact plant growth...'

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In what specific location is Topflor use restricted in New York State?

• Outdoor commercial nurseries only
• All ornamental plant sites
• Greenhouse applications only ✓
• Shadehouses and greenhouses only

Answer: The label states: 'In New York State, use is restricted to greenhouse applications only.'

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When mixing Topflor in a spray tank, what is the correct procedure for adding the product and water?

• Fill the tank to capacity with water, then add Topflor
• Mix Topflor and water in a separate container before adding to the tank
• Fill spray tank with half the required amount of water, add Topflor, then fill to the remaining amount ✓
• Add Topflor to a full tank of water to prevent splashing

Answer: The mixing and dilution notes state: 'Fill spray tank with half the required amount of water, add Topflor, then fill to remaining amount.'

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What is a potential consequence of using additional wetting agents in combination with Topflor?

• Reduced effectiveness of the active ingredient
• Increased water loss in the plant
• Crop injury may occur ✓
• Excessive leaf darkening

Answer: The use restrictions state: 'Do not use additional wetting agents in combination with Topflor as crop injury may occur.'

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