, Question 1
A restricted-use insecticide label states: 'Do not apply within 50 feet of any
well, sinkhole, or surface water.' A applicator plans to treat a field adjacent to a
river. Which of the following best describes the legal requirement for the
buffer zone?
A. The buffer zone is only advisory and may be reduced if wind speed is
below 5 mph.
B. The buffer zone must be maintained unless a state-issued variance is
obtained.
C. The buffer zone applies only to aerial applications, not ground
applications.
D. The buffer zone can be waived if the pesticide is tank-mixed with a
drift retardant.
Correct Answer: B - The buffer zone must be maintained unless a
state-issued variance is obtained.
RATIONALE
Buffer zones on restricted-use pesticide labels are mandatory legal
requirements under FIFRA and Utah state law. A variance can only be
granted by the state lead agency (UDAF) under specific conditions.
The other options incorrectly suggest that buffer zones are optional or
modifiable without regulatory approval.
Question 2
A grower wants to control aphids in a greenhouse while preserving beneficial
insects. Which IPM tactic best integrates biological control with minimal
pesticide use?
A. Apply a broad-spectrum pyrethroid weekly as a preventative.
B. Release Aphidius colemani parasitoids and monitor with yellow sticky
traps.
C. Use a soil drench of imidacloprid to kill aphids systemically.
Page 2
, D. Increase nitrogen fertilization to make plants less attractive to aphids.
Correct Answer: B - Release Aphidius colemani parasitoids and
monitor with yellow sticky traps.
RATIONALE
Releasing a host-specific parasitoid like Aphidius colemani is a
classical biological control tactic that targets aphids while sparing
beneficials. Monitoring with sticky traps allows threshold-based
decisions, aligning with IPM principles. Broad-spectrum insecticides
and systemic neonicotinoids harm natural enemies, and excess
nitrogen can increase aphid populations.
Question 3
A pesticide label lists 'Signal Word: DANGER' and 'Precautionary Statements:
Fatal if swallowed.' Which of the following PPE is minimally required by the
label for mixing and loading?
A. Long-sleeved shirt, long pants, and chemical-resistant gloves.
B. Coveralls over a long-sleeved shirt and long pants, chemical-resistant
gloves, and a NIOSH-approved respirator.
C. Chemical-resistant apron, goggles, and a dust mask.
D. No PPE required if the product is diluted in water.
Correct Answer: B - Coveralls over a long-sleeved shirt and long
pants, chemical-resistant gloves, and a NIOSH-approved
respirator.
RATIONALE
A DANGER signal word indicates high acute toxicity, often requiring
maximum PPE including coveralls, chemical-resistant gloves, and a
respirator for mixing/loading. The label's precautionary statements
specify the minimum PPE. Options A and C are insufficient for a
DANGER-level product, and D is never acceptable.
Page 3
, Question 4
A sprayer is calibrated to deliver 20 GPA at 4 mph. If the applicator increases
speed to 5 mph without adjusting pressure, what is the new application rate?
A. 16 GPA
B. 25 GPA
C. 20 GPA
D. 24 GPA
Correct Answer: A - 16 GPA
RATIONALE
Application rate is inversely proportional to speed when pressure and
nozzle size are constant. Using the formula: New GPA = Old GPA ×
(Old Speed / New Speed) = 20 × (4/5) = 16 GPA. The other options
incorrectly assume direct proportionality or no change.
Question 5
A pesticide with the signal word 'CAUTION' and the statement 'This product is
toxic to fish' is to be applied near a koi pond. Which of the following is the
most appropriate action to prevent a fish kill?
A. Apply the pesticide at the lowest labeled rate and wait for rain to dilute
it.
B. Create a 100-foot vegetative buffer strip between the treated area and
the pond.
C. Apply the pesticide in the evening when fish are less active.
D. Mix the pesticide with a surfactant to increase its breakdown in water.
Correct Answer: B - Create a 100-foot vegetative buffer strip
between the treated area and the pond.
Page 4
A restricted-use insecticide label states: 'Do not apply within 50 feet of any
well, sinkhole, or surface water.' A applicator plans to treat a field adjacent to a
river. Which of the following best describes the legal requirement for the
buffer zone?
A. The buffer zone is only advisory and may be reduced if wind speed is
below 5 mph.
B. The buffer zone must be maintained unless a state-issued variance is
obtained.
C. The buffer zone applies only to aerial applications, not ground
applications.
D. The buffer zone can be waived if the pesticide is tank-mixed with a
drift retardant.
Correct Answer: B - The buffer zone must be maintained unless a
state-issued variance is obtained.
RATIONALE
Buffer zones on restricted-use pesticide labels are mandatory legal
requirements under FIFRA and Utah state law. A variance can only be
granted by the state lead agency (UDAF) under specific conditions.
The other options incorrectly suggest that buffer zones are optional or
modifiable without regulatory approval.
Question 2
A grower wants to control aphids in a greenhouse while preserving beneficial
insects. Which IPM tactic best integrates biological control with minimal
pesticide use?
A. Apply a broad-spectrum pyrethroid weekly as a preventative.
B. Release Aphidius colemani parasitoids and monitor with yellow sticky
traps.
C. Use a soil drench of imidacloprid to kill aphids systemically.
Page 2
, D. Increase nitrogen fertilization to make plants less attractive to aphids.
Correct Answer: B - Release Aphidius colemani parasitoids and
monitor with yellow sticky traps.
RATIONALE
Releasing a host-specific parasitoid like Aphidius colemani is a
classical biological control tactic that targets aphids while sparing
beneficials. Monitoring with sticky traps allows threshold-based
decisions, aligning with IPM principles. Broad-spectrum insecticides
and systemic neonicotinoids harm natural enemies, and excess
nitrogen can increase aphid populations.
Question 3
A pesticide label lists 'Signal Word: DANGER' and 'Precautionary Statements:
Fatal if swallowed.' Which of the following PPE is minimally required by the
label for mixing and loading?
A. Long-sleeved shirt, long pants, and chemical-resistant gloves.
B. Coveralls over a long-sleeved shirt and long pants, chemical-resistant
gloves, and a NIOSH-approved respirator.
C. Chemical-resistant apron, goggles, and a dust mask.
D. No PPE required if the product is diluted in water.
Correct Answer: B - Coveralls over a long-sleeved shirt and long
pants, chemical-resistant gloves, and a NIOSH-approved
respirator.
RATIONALE
A DANGER signal word indicates high acute toxicity, often requiring
maximum PPE including coveralls, chemical-resistant gloves, and a
respirator for mixing/loading. The label's precautionary statements
specify the minimum PPE. Options A and C are insufficient for a
DANGER-level product, and D is never acceptable.
Page 3
, Question 4
A sprayer is calibrated to deliver 20 GPA at 4 mph. If the applicator increases
speed to 5 mph without adjusting pressure, what is the new application rate?
A. 16 GPA
B. 25 GPA
C. 20 GPA
D. 24 GPA
Correct Answer: A - 16 GPA
RATIONALE
Application rate is inversely proportional to speed when pressure and
nozzle size are constant. Using the formula: New GPA = Old GPA ×
(Old Speed / New Speed) = 20 × (4/5) = 16 GPA. The other options
incorrectly assume direct proportionality or no change.
Question 5
A pesticide with the signal word 'CAUTION' and the statement 'This product is
toxic to fish' is to be applied near a koi pond. Which of the following is the
most appropriate action to prevent a fish kill?
A. Apply the pesticide at the lowest labeled rate and wait for rain to dilute
it.
B. Create a 100-foot vegetative buffer strip between the treated area and
the pond.
C. Apply the pesticide in the evening when fish are less active.
D. Mix the pesticide with a surfactant to increase its breakdown in water.
Correct Answer: B - Create a 100-foot vegetative buffer strip
between the treated area and the pond.
Page 4
