American Samoa Commercial Pesticide
Applicator - Category 3 Ornamental and
Turf Pest Control Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. In ornamental and turf pest management, which principle best
describes integrated pest management (IPM)?
A. Immediate eradication of all pests using broad-spectrum pesticides
B. Reliance solely on biological control agents without chemical use
C. Combining cultural, biological, mechanical, and chemical methods to
manage pest populations below damaging levels
D. Preventing all pest entry through exclusion structures only
IPM is a holistic approach that integrates multiple control strategies,
emphasizing long-term prevention and economic thresholds rather than
complete eradication of pests.
2. Which soil condition most increases the likelihood of root disease in
turfgrass?
A. Well-aerated sandy soil with rapid drainage
B. Slightly acidic, nutrient-balanced soil
,C. Poorly drained, compacted soil with excessive moisture retention
D. Dry, coarse-textured soil with low organic matter
Excess moisture and poor aeration create ideal conditions for fungal
pathogens that attack turfgrass roots, leading to disease outbreaks.
3. Which pest is most commonly associated with chewing damage in
turfgrass?
A. Aphids
B. Whiteflies
C. Spider mites
D. Armyworms
Armyworms are larval stages of moths that feed aggressively on turfgrass
blades, causing visible defoliation.
4. The term "economic threshold" in pest control refers to:
A. The point at which all pests must be eliminated
B. The maximum pesticide allowed by law
C. The pest population level at which control measures should be applied
to prevent economic damage
D. The cost of pesticide application per acre
The economic threshold guides decision-making by indicating when pest
control becomes financially justified.
5. Which cultural practice most effectively reduces weed pressure in
turf?
A. Increasing irrigation frequency
B. Applying fertilizer in excess
C. Maintaining proper mowing height and density of turfgrass
D. Leaving grass clippings on the lawn indefinitely
, Healthy, dense turfgrass outcompetes weeds by limiting available light
and space for weed germination.
6. Which pesticide application timing is most effective for pre-emergent
herbicides in turf?
A. After weeds are fully mature
B. During peak summer heat
C. Before weed seeds germinate
D. After turf damage is visible
Pre-emergent herbicides work by preventing weed seed germination,
requiring application before emergence.
7. Which insect is a common root-feeding pest in turfgrass?
A. Leafhoppers
B. Aphids
C. White grubs
D. Thrips
White grubs feed on turfgrass roots, causing wilting, browning, and easy
lifting of sod.
8. What is the primary purpose of calibration of pesticide equipment?
A. To increase pesticide toxicity
B. To reduce pesticide label requirements
C. To ensure accurate application rates and uniform distribution
D. To change pesticide formulation
Calibration ensures that the correct amount of pesticide is applied,
preventing under- or over-application.
9. Which disease is most commonly associated with cool, wet conditions
in turfgrass?
Applicator - Category 3 Ornamental and
Turf Pest Control Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. In ornamental and turf pest management, which principle best
describes integrated pest management (IPM)?
A. Immediate eradication of all pests using broad-spectrum pesticides
B. Reliance solely on biological control agents without chemical use
C. Combining cultural, biological, mechanical, and chemical methods to
manage pest populations below damaging levels
D. Preventing all pest entry through exclusion structures only
IPM is a holistic approach that integrates multiple control strategies,
emphasizing long-term prevention and economic thresholds rather than
complete eradication of pests.
2. Which soil condition most increases the likelihood of root disease in
turfgrass?
A. Well-aerated sandy soil with rapid drainage
B. Slightly acidic, nutrient-balanced soil
,C. Poorly drained, compacted soil with excessive moisture retention
D. Dry, coarse-textured soil with low organic matter
Excess moisture and poor aeration create ideal conditions for fungal
pathogens that attack turfgrass roots, leading to disease outbreaks.
3. Which pest is most commonly associated with chewing damage in
turfgrass?
A. Aphids
B. Whiteflies
C. Spider mites
D. Armyworms
Armyworms are larval stages of moths that feed aggressively on turfgrass
blades, causing visible defoliation.
4. The term "economic threshold" in pest control refers to:
A. The point at which all pests must be eliminated
B. The maximum pesticide allowed by law
C. The pest population level at which control measures should be applied
to prevent economic damage
D. The cost of pesticide application per acre
The economic threshold guides decision-making by indicating when pest
control becomes financially justified.
5. Which cultural practice most effectively reduces weed pressure in
turf?
A. Increasing irrigation frequency
B. Applying fertilizer in excess
C. Maintaining proper mowing height and density of turfgrass
D. Leaving grass clippings on the lawn indefinitely
, Healthy, dense turfgrass outcompetes weeds by limiting available light
and space for weed germination.
6. Which pesticide application timing is most effective for pre-emergent
herbicides in turf?
A. After weeds are fully mature
B. During peak summer heat
C. Before weed seeds germinate
D. After turf damage is visible
Pre-emergent herbicides work by preventing weed seed germination,
requiring application before emergence.
7. Which insect is a common root-feeding pest in turfgrass?
A. Leafhoppers
B. Aphids
C. White grubs
D. Thrips
White grubs feed on turfgrass roots, causing wilting, browning, and easy
lifting of sod.
8. What is the primary purpose of calibration of pesticide equipment?
A. To increase pesticide toxicity
B. To reduce pesticide label requirements
C. To ensure accurate application rates and uniform distribution
D. To change pesticide formulation
Calibration ensures that the correct amount of pesticide is applied,
preventing under- or over-application.
9. Which disease is most commonly associated with cool, wet conditions
in turfgrass?
