Garlon 4 Ultra Herbicide

When performing a cut stump treatment for difficult to control species like saltcedar, what is the recommended dilution?

• 10% dilution v/v in water
• 25% dilution v/v in water
• 50% dilution v/v in water or undiluted ✓
• 75% dilution v/v in water

Answer: The label states for cut stump treatments of difficult species, use a 50% dilution v/v in water or undiluted.

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What is the maximum application rate for individual plant treatments (basal bark and cut surface) per acre?

• 2 quarts (2 lb ae of triclopyr) per acre
• 4 quarts (4 lb ae of triclopyr) per acre
• 6 quarts (6 lb ae of triclopyr) per acre
• 8 quarts (8 lb ae of triclopyr) per acre ✓

Answer: The label specifies a rate of 8 quarts (8 lb ae of triclopyr) per acre for basal bark and cut surface individual plant treatments.

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When performing a Conventional Basal Bark treatment on stems less than 6 inches in diameter, how high should the herbicide be sprayed?

• 6 to 10 inches from the ground
• 12 to 15 inches from the ground ✓
• 18 to 24 inches from the ground
• Up to the first branch collar

Answer: For conventional basal bark, spray the basal parts of brush and tree trunks to a height of 12 to 15 inches from the ground.

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For low volume applications, how much crop oil concentrate should be mixed with 4 to 6 gallons of Garlon 4 Ultra to make 100 gallons of spray solution?

• 1 to 2 gallons
• 2 to 3 gallons ✓
• 4 to 5 gallons
• 5 to 6 gallons

Answer: For low volume applications, mix 4 to 6 gallons of Garlon 4 Ultra and 2 to 3 gallons of crop oil concentrate to make 100 gallons of spray solution.

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When treating root suckering species via basal cut stump, how should the herbicide be applied?

• Spray until runoff at the ground line is noticeable
• Apply only to the center of the stump
• Spray until thoroughly wet, but not to the point of runoff ✓
• Apply only to the exposed cambium layer

Answer: For root suckering species, spray the root collar, exposed roots, and stump sides until thoroughly wet, but not to the point of runoff.

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Which of the following is a factor that may reduce the efficacy of the herbicide?

• Applying during winter months
• Applying to stems with smooth young bark
• Treatment during periods of moisture stress ✓
• Applying to stems less than 6 inches in diameter

Answer: The label notes that control may be reduced with treatment during periods of moisture stress, such as in late summer.

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What is a requirement for mixing Garlon 4 Ultra with oil for conventional, low volume, or basal cut stump treatments?

• The mixture must be applied within 24 hours
• The mixture requires vigorous agitation to form an oil solution ✓
• The mixture must be diluted with 50% water
• The mixture must be applied only in winter months

Answer: The label states that mixing with oil requires vigorous agitation to form an oil solution.

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According to the label restrictions, under what condition should you avoid applying the product?

• During periods of high wind
• When temperatures are below freezing
• To wet or saturated bark ✓
• During periods of moisture stress

Answer: The label explicitly states: 'Do not apply to wet or saturated bark as poor control may result.'

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