Kerb SC T and O Specialty Herbicide

Which of the following is a target pest for Kerb SC in Blackberry/Boysenberry/Raspberry sites under 'Low Rainfall' conditions?

• Bluegrass
• Perennial quackgrass
• Barley or foxtail ✓
• Susceptible broadleaf weeds only

Answer: The label lists 'barley, foxtail' as the target pests for Blackberry/Boysenberry/Raspberry under 'Low Rainfall' conditions.

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When applying to transplanted blackberries, boysenberries, or raspberries, how long must the plants be well rooted prior to application?

• At least 1 month
• At least 3 months ✓
• At least 6 months
• At least 1 year

Answer: The restrictions state: 'Newly transplanted blackberries, boysenberries, and raspberries must be well rooted and transplanted for at least 3 months prior to the application...'

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For Blackberry, Boysenberry, or Raspberry crops, what is the restriction regarding the number of applications allowed per year?

• No more than one application per year ✓
• No more than two applications per year
• Applications must be made every 30 days
• One application in fall and one in spring

Answer: The specific use restrictions for Blackberry/Boysenberry/Raspberry state: 'make more than one application of Kerb SC per year.'

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When using a ground sprayer for preemergence control in established ratoon artichokes, what is the required water volume per acre?

• A minimum of 10 gallons of water per acre
• Exactly 5 gallons of water per acre
• 20 to 50 gallons of water per acre ✓
• 100 gallons of water per acre

Answer: The mixing notes for artichokes state ground applications should be mixed in clean water and applied with a ground sprayer in 20 to 50 gallons of water per acre.

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When applying Kerb SC to transplanted artichoke crowns, what is the maximum allowable rate of product per acre in a single season?

• 2.5 pints per acre
• 5.0 pints per acre ✓
• 7.5 pints per acre
• 10.0 pints per acre

Answer: The label states: 'Do not use higher rates of Kerb SC than 5.0 pints per acre in one season.'

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In which specific states is Kerb SC authorized for use on Blackberry, Boysenberry, and Raspberry?

• California, Oregon, and Washington
• Idaho, Oregon, and Washington ✓
• Idaho, California, and Washington
• Oregon, Washington, and Nevada

Answer: The label specifies Blackberry/Boysenberry/Raspberry use is for 'Idaho, Oregon and Washington Only.'

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Under what weather or irrigation conditions should a technician apply 5.0 pints of Kerb SC per acre to Alfalfa, Clover, Birdsfoot Trefoil, Crown Vetch, or Sainfoin?

• During periods of low rainfall
• Under dependable rainfall or overhead irrigation ✓
• Only when the ground is frozen
• During high temperature conditions

Answer: The label specifies a rate of 5.0 pints per acre for these crops 'Under Dependable Rainfall or Overhead Irrigation.'

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According to the timing and weather instructions, what is the optimum temperature range for herbicidal activity?

• 55°F or less ✓
• 60°F to 70°F
• Above 75°F
• Exactly 32°F

Answer: The label states: 'Optimum herbicidal activity occurs when applications are made under cool temperature conditions (55°F or less)...'

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