Monterey Thistledown

To minimize the movement of clopyralid on wind-blown dust, what action should be taken regarding powdery dry or light sandy soils?

• Apply only during heavy rainfall.
• Avoid treatment until soil is settled by rainfall or irrigation, or irrigate shortly after application. ✓
• Apply only when the soil is completely saturated.
• Apply only during the early morning to avoid wind.

Answer: The label advises avoiding treatment of powdery dry or light sandy soils until settled by rain/irrigation or irrigating shortly after application to minimize movement on wind-blown dust.

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What is the application rate for Monterey Thistledown when treating Musk thistle per 1,000 sq. ft.?

• 1/8 to 3/8 fl. oz. ✓
• 1/4 to 3/8 fl. oz.
• 3/16 to 3/8 fl. oz.
• 3/8 to 1/2 fl. oz.

Answer: The label lists the rate for Musk thistle as 1/8 to 3/8 fl. oz. per 1,000 sq. ft.

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Which of the following is a restriction regarding the use of plant residues from treated areas?

• Do not use hay or straw from treated areas for composting or mulching where susceptible plants may be grown the following season. ✓
• Do not use treated hay for animal bedding in any location.
• Do not use manure from treated areas for any type of fertilizer.
• Do not use treated plant residues for grazing animals.

Answer: The label prohibits using plant residues, including hay or straw from treated areas, for composting or mulching where susceptible plants may be grown the following season.

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When applying Monterey Thistledown to spotted and diffuse knapweed, what is the optimum growth stage for application?

• Rosette to early bolt stage
• Bud to midflower stage
• Mid bolt to late bud stage ✓
• After the majority of basal leaves have emerged

Answer: The label states the optimum time for spotted and diffuse knapweed is from mid bolt to late bud stage of growth.

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According to the mixing instructions, how should the spray tank be prepared before adding the product?

• Fill the tank completely with water and then add the product.
• Add 1/2 of the required spray volume and start agitation.
• Add 3/4 of the required spray volume and start agitation. ✓
• Add the product first, then add 3/4 of the water volume.

Answer: The mixing instructions state to add 3/4 of the required spray volume to the spray tank and start agitation before adding the product.

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Which of the following pests is Monterey Thistledown specifically labeled to suppress in rangeland and permanent pastures?

• Yellow starthistle
• Russian knapweed ✓
• Musk thistle
• Canada thistle

Answer: The label specifies that Russian knapweed is targeted for suppression.

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When treating susceptible broadleaf weeds or established forage grasses in permanent grass pastures, when should the higher labeled application rate be used?

• When weeds are young and actively growing.
• When applying to small, sparse weed stands.
• Under less favorable conditions, or on dense weed stands and/or larger weeds. ✓
• Only during the fall regrowth stage.

Answer: The label states the higher rate should be used under less favorable conditions, or on dense weed stands and/or larger weeds.

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Where is Monterey Thistledown specifically labeled for application regarding kudzu?

• Rangeland and Permanent Pastures
• Non-crop areas ✓
• Permanent grass pastures
• Ornamental gardens

Answer: The label lists the site for kudzu application as non-crop areas.

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