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Sample questions
When applying 2,4-D LV4 to corn to control postemergence annual broadleaf weeds, what is the recommended height of the corn plant to avoid late defoliation injury?
- Between 5 to 15 inches tall
- At the full tiller stage (4 to 8 inches high)
- Less than 8 inches tall
- At the boot stage
Show answer
Postemergence Annual broadleaf weeds; location: Outdoor; site: Corn; rate: 1/2; unit: pint; notes: Apply when corn is less than 8 inches tall, but avoid crop injury due to late defoliation.🔗 Source
What is the minimum wind speed restriction for applying 2,4-D LV4 to prevent drift?
- Do not apply if wind speeds are greater than 5 mph
- Do not apply if wind speeds are greater than 10 mph
- Do not apply if wind speeds are greater than 15 mph
- Do not apply if wind speeds are greater than 20 mph
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Do not apply in windy conditions (> 5 mph) to prevent drift. / Do not apply when wind speeds are greater than 5 mph.🔗 Source
For corn, what is the restriction regarding cultivation after treatment?
- Do not cultivate for 3 days after treatment
- Do not cultivate for a week to 10 days after treatment to avoid soil breakage
- Do not cultivate for 14 days after treatment
- Do not cultivate for a week to 10 days after treatment
Show answer
Do not cultivate a week to 10 days after treatment or soil breakage may occur.🔗 Source
According to the mixing instructions, what is the correct procedure for preparing the mixing equipment?
- Fill equipment full, add product, then add water
- Fill equipment half full of water, agitate while adding product, then add the rest of water
- Fill equipment one-third full of water, add product, then add the rest of water
- Mix product and water separately, then combine in the equipment
Show answer
Mixing and dilution: Fill the mixing equipment half full of water, agitate while adding this product, then add the rest of water.🔗 Source
If 2,4-D LV4 is applied to Grain Sorghum, what is the restriction regarding meat and dairy animals?
- Do not allow consumption for 7 days
- Do not allow consumption for 14 days
- Do not allow consumption for 30 days
- Do not allow consumption for 60 days
Show answer
Do not allow meat or dairy animals to consume treated crop for 30 days following application (Grain Sorghum).🔗 Source
Which of the following is a required piece of Personal Protective Equipment (PPE) for this product?
- Nitrile rubber, viton, or barrier laminate gloves
- Cotton gloves and long-sleeved shirt
- Chemical-resistant boots only
- Face shield and respirator
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PPE: Wear long-sleeved shirt and long pants, chemical-resistant gloves made of neoprene, nitrile rubber, barrier laminate, or viton, and shoes plus socks.🔗 Source
When treating small grains (not underseeded with legumes) for postemergence annual and biennial weeds, at what plant stage should the application occur?
- During the boot stage
- In the full tiller stage (4 to 8 inches high) but before boot stage
- When grain is in the dough stage
- When weeds are in the bud stage
Show answer
Postemergence Spring wheat, barley, and rye Annual and biennial weeds; location: Outdoor; site: Small Grains (Not underseeded with legumes); rate: 1/2 to 2; unit: pints; notes: Apply when grain is in full tiller stage (4 to 8 inches high) but before boot stage.🔗 Source
When applying 2,4-D LV4 to soybeans for preplant annual and perennial broadleaf weeds, what is required to prevent severe injury?
- The application must be delayed 7 days after planting
- The application must be made at the boot stage
- The seed furrow must be completely closed
- The application must be 1-1/2 to 2 inches deep
Show answer
Preplant Annual and perennial broadleaf weeds; location: Outdoor; site: Soybeans; rate: 1 to 2.1; unit: pints; notes: Apply 1-1/2 to 2 inches deep. Seed furrow must be completely closed or severe injury will result.🔗 Source
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