SonarPR

How should a technician calculate the application rate for SonarPR?

• Based on the weight of the plants present.
• Based on the total volume of the lake only.
• Based on average water depth and desired ppb concentration. ✓
• Based on the surface area of the pond.

Answer: The mixing and dilution section notes: 'Rates are calculated based on average water depth and desired ppb concentration.'

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When irrigating crops with water treated with SonarPR, what must be observed to prevent plant injury?

• The time of year the water is used.
• The specific concentration of the water.
• Specific time frames must be observed. ✓
• The depth of the water source.

Answer: The text states: 'When irrigating crops, specific time frames must be observed to prevent injury to vegetation.'

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According to the product description, which of the following is NOT a listed site for the management of aquatic vegetation using SonarPR?

• Potable water sources
• Irrigation canals
• Drainage canals
• Saltwater estuaries ✓

Answer: The text specifies use in fresh water ponds, lakes, reservoirs, potable water sources, drainage canals, irrigation canals, and rivers.

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Which statement regarding personal protective equipment (PPE) and handling is correct for SonarPR?

• The product is corrosive to application equipment.
• Avoid breathing dust or contact with skin, eyes, or clothing. ✓
• It is only harmful if swallowed.
• Wash hands with alcohol instead of soap and water.

Answer: The PPE section states: 'Avoid breathing dust or contact with skin, eyes, or clothing. Wash thoroughly with soap and water after handling.'

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When applying SonarPR in a lake or reservoir near a functioning potable water intake, what is the maximum application rate allowed within 1/4 mile of that intake?

• 20 ppb ✓
• 45 ppb
• 90 ppb
• 150 ppb

Answer: The label states: 'Do not apply in lakes/reservoirs at rates >20 ppb within 1/4 mile of a functioning potable water intake.'

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What is a factor that influences the selectivity of SonarPR when controlling submerged plants?

• Water pH levels
• Water depth only
• Dosage, time of year, stage of growth, and water movement ✓
• The salinity of the water source

Answer: The label notes: 'Selectivity depends on dosage, time of year, stage of growth, and water movement.'

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When applying SonarPR in a lake or reservoir, what is the maximum annual application rate allowed?

• 45 ppb
• 90 ppb
• 150 ppb ✓
• 20 ppb

Answer: The label states a maximum annual application rate of 90 ppb in ponds and 150 ppb in lakes and reservoirs.

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In New York State, what is the restriction regarding water depth for SonarPR application?

• Do not use in waters less than 1 foot deep.
• Do not use in waters less than 2 feet deep without special registration. ✓
• Do not use in waters less than 5 feet deep.
• No depth restrictions are mentioned for NY State.

Answer: The label states: 'Do not use in waters less than 2 feet deep in NY State without special registration.'

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