New Jersey Category 3b — Turf Pest
Control Exam Practice Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
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1. What is the primary purpose of integrated pest management (IPM) in
turfgrass systems?
A. Eliminate all pests using chemicals only
B. Use a combination of methods to manage pests economically and
environmentally
C. Increase pesticide use for faster control
D. Prevent all plant diseases permanently
Correct Answer: B
Rationale: IPM combines cultural, biological, and chemical methods
to manage pests effectively while minimizing environmental impact.
2. Which turfgrass disease is most commonly associated with cool, wet
conditions and circular brown patches?
, A. Dollar spot
B. Brown patch
C. Rust
D. Leaf spot
Correct Answer: B
Rationale: Brown patch thrives in warm, humid conditions and forms
circular patches of blighted turf.
3. What is the best cultural practice to reduce weed infestation in turf?
A. Frequent pesticide application
B. Proper mowing height and fertilization
C. Heavy irrigation daily
D. Soil sterilization
Correct Answer: B
Rationale: Healthy, dense turf from proper mowing and fertilization
suppresses weed establishment.
4. Which insect commonly damages turf by feeding on grass roots as
larvae?
A. Aphids
B. White grubs
C. Armyworms
D. Leafhoppers
Correct Answer: B
, Rationale: White grub larvae feed on turf roots, causing wilting and
dead patches.
5. Pre-emergent herbicides are most effective when applied:
A. After weeds are visible
B. Before weed seeds germinate
C. During drought conditions
D. Only in winter
Correct Answer: B
Rationale: Pre-emergent herbicides prevent weed seed germination.
6. Which mowing practice promotes healthier turf?
A. Cutting more than one-third of grass height
B. Cutting very short to reduce mowing frequency
C. Regular mowing at recommended height
D. Mowing only once per month
Correct Answer: C
Rationale: Proper mowing height maintains turf vigor and reduces
stress.
7. What is the main cause of thatch buildup in turf?
A. Excessive pesticide use
B. Excessive nitrogen and poor microbial activity
C. Low soil pH only
D. Over-aeration
Correct Answer: B
, Rationale: High nitrogen and slow decomposition lead to organic
matter accumulation.
8. Which condition favors fungal turf diseases?
A. Dry, windy weather
B. Cool, dry soil
C. High humidity and poor air circulation
D. Sandy soil only
Correct Answer: C
Rationale: Moist, humid environments promote fungal growth.
9. The best time to irrigate turfgrass is:
A. At midday
B. Late evening
C. Early morning
D. Anytime randomly
Correct Answer: C
Rationale: Morning irrigation reduces disease risk and allows drying
during the day.
10. Which nutrient promotes green color in turfgrass?
A. Phosphorus
B. Potassium
C. Nitrogen
D. Calcium
Correct Answer: C
Control Exam Practice Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary purpose of integrated pest management (IPM) in
turfgrass systems?
A. Eliminate all pests using chemicals only
B. Use a combination of methods to manage pests economically and
environmentally
C. Increase pesticide use for faster control
D. Prevent all plant diseases permanently
Correct Answer: B
Rationale: IPM combines cultural, biological, and chemical methods
to manage pests effectively while minimizing environmental impact.
2. Which turfgrass disease is most commonly associated with cool, wet
conditions and circular brown patches?
, A. Dollar spot
B. Brown patch
C. Rust
D. Leaf spot
Correct Answer: B
Rationale: Brown patch thrives in warm, humid conditions and forms
circular patches of blighted turf.
3. What is the best cultural practice to reduce weed infestation in turf?
A. Frequent pesticide application
B. Proper mowing height and fertilization
C. Heavy irrigation daily
D. Soil sterilization
Correct Answer: B
Rationale: Healthy, dense turf from proper mowing and fertilization
suppresses weed establishment.
4. Which insect commonly damages turf by feeding on grass roots as
larvae?
A. Aphids
B. White grubs
C. Armyworms
D. Leafhoppers
Correct Answer: B
, Rationale: White grub larvae feed on turf roots, causing wilting and
dead patches.
5. Pre-emergent herbicides are most effective when applied:
A. After weeds are visible
B. Before weed seeds germinate
C. During drought conditions
D. Only in winter
Correct Answer: B
Rationale: Pre-emergent herbicides prevent weed seed germination.
6. Which mowing practice promotes healthier turf?
A. Cutting more than one-third of grass height
B. Cutting very short to reduce mowing frequency
C. Regular mowing at recommended height
D. Mowing only once per month
Correct Answer: C
Rationale: Proper mowing height maintains turf vigor and reduces
stress.
7. What is the main cause of thatch buildup in turf?
A. Excessive pesticide use
B. Excessive nitrogen and poor microbial activity
C. Low soil pH only
D. Over-aeration
Correct Answer: B
, Rationale: High nitrogen and slow decomposition lead to organic
matter accumulation.
8. Which condition favors fungal turf diseases?
A. Dry, windy weather
B. Cool, dry soil
C. High humidity and poor air circulation
D. Sandy soil only
Correct Answer: C
Rationale: Moist, humid environments promote fungal growth.
9. The best time to irrigate turfgrass is:
A. At midday
B. Late evening
C. Early morning
D. Anytime randomly
Correct Answer: C
Rationale: Morning irrigation reduces disease risk and allows drying
during the day.
10. Which nutrient promotes green color in turfgrass?
A. Phosphorus
B. Potassium
C. Nitrogen
D. Calcium
Correct Answer: C
