KENTUCKY CATEGORY 3 ORNAMENTAL & TURF PEST CONTROL EXAM -
KENTUCKY DEPARTMENT OF AGRICULTURE - 2026/2027 ACADEMIC
YEAR - QUESTIONS AND ANSWERS COVERING FOUR CORE DOMAINS
80 QUESTIONS
TABLE OF CONTENTS
# TOPIC
1 Demonstrate mastery of core concepts
2 Kentucky Category 3 Ornamental & Turf Pest Control Exam
3 Kentucky Department of Agriculture
4 2026
5 2027 Academic Year
6 Questions and Answers Covering Four Core Domains
7 Foundations of Kentucky Category 3 Ornamental & Turf Pest Control Exam - Kentucky Department of
Agriculture - 2026/2027 Academic Year - Questions and Answers Covering Four Core Domains
8 Applied Kentucky Category 3 Ornamental & Turf Pest Control Exam - Kentucky Department of Agriculture
- 2026/2027 Academic Year - Questions and Answers Covering Four Core Domains
9 Advanced Kentucky Category 3 Ornamental & Turf Pest Control Exam - Kentucky Department of
Agriculture - 2026/2027 Academic Year - Questions and Answers Covering Four Core Domains
10 Kentucky Category 3 Ornamental & Turf Pest Control Exam - Kentucky Department of Agriculture -
2026/2027 Academic Year - Questions and Answers Covering Four Core Domains Review
ABSTRACT
This study document brings together 80 carefully worded exam questions drawn from Kentucky
Category 3 Ornamental & Turf Pest Control Exam - Kentucky Department of Agriculture -
2026/2027 Academic Year - Questions and Answers Covering Four Core Domains, with the
strongest emphasis placed on Demonstrate mastery of core concepts, Kentucky Category 3
Ornamental & Turf Pest Control Exam and Kentucky Department of Agriculture. Every item follows
the wording style and level of reasoning you meet in the real paper, and each one is paired with a
clear rationale so the correct choice is never a guess. Work through the set at your own pace,
mark the questions that slow you down, then come back to them until the reasoning feels
automatic. Learners who revise this way walk into the exam room recognising the pattern behind
the questions instead of meeting them for the first time. Keep going - steady, honest practice is
what turns a difficult paper into a comfortable pass.
Page 1
,Q1 DEMONSTRATE MASTERY OF CORE CONCEPTS
In a Kentucky bluegrass lawn exhibiting irregular yellow-green patches in early
spring, a soil test reveals pH 6.8 and adequate nitrogen. Which organism is the
most likely cause, and what cultural practice is the most effective long-term
corrective measure?
A. Necrotic ring spot (Leptosphaeria korrae) - core aeration and reduced nitrogen in spring
CORRECT
B. Large patch (Rhizoctonia solani AG 2-2LP) - avoid nitrogen in spring and increase potassium
C. Summer patch (Magnaporthe poae) - irrigate deeply and infrequently during summer
D. Red thread (Laetisaria fuciformis) - apply balanced nitrogen and reduce thatch
RATIONALE: Necrotic ring spot (L. korrae) causes yellow-green rings in spring and is
exacerbated by high nitrogen and thatch; core aeration reduces thatch and improves root health.
Large patch typically occurs in zoysia/bermudagrass, summer patch is a summer disease, and
red thread presents with pink mycelium, not distinct rings.
Q2 DEMONSTRATE MASTERY OF CORE CONCEPTS
A golf course superintendent must control Poa annua in creeping bentgrass
fairways. Which herbicide program is most effective and least injurious to the
bentgrass?
A. Single spring application of prodiamine at 1.5 lb ai/A
B. Sequential applications of bispyribac-sodium (0.25 oz/A) in early spring and fall CORRECT
C. Fall applications of glyphosate (1 lb ae/A) as a spot treatment
D. Overseeding with perennial ryegrass and applying mesotrione (0.25 lb ai/A) throughout the
season
RATIONALE: Bispyribac-sodium (Velocity) is one of the few postemergence herbicides that
selectively controls Poa annua in bentgrass when applied sequentially at low rates. Prodiamine is
only preemergence and too late for established Poa. Glyphosate is nonselective and injures
bentgrass. Mesotrione plus overseeding does not provide adequate selective control.
Page 2
,Q3 DEMONSTRATE MASTERY OF CORE CONCEPTS
Which integrated pest management (IPM) principle is most critical when managing
white grubs in turfgrass, and why?
A. Preventive insecticide application at peak adult flight to reduce egg laying
B. Monitoring with soap flushes to detect early instars before applying curative products
CORRECT
C. Exclusive reliance on entomopathogenic nematodes (Heterorhabditis bacteriophora) due to
their long persistence
D. Applying imidacloprid only after visible damage appears to minimize environmental impact
RATIONALE: IPM emphasizes monitoring to determine if and when treatment is needed; soap
flushes reveal early instars when curative products are most effective. Preventive applications
without monitoring are not IPM. Nematodes are a tool but not exclusive reliance. Waiting for
visible damage is too late and violates IPM principles.
Q4 DEMONSTRATE MASTERY OF CORE CONCEPTS
A landscape contractor plans to treat a 10,000 sq ft area for dandelion and clover.
The label rate is 2.5 pints per acre. How many fluid ounces of product are
required?
A. 9.2 fl oz CORRECT
B. 12.0 fl oz
C. 16.0 fl oz
D. 20.0 fl oz
RATIONALE: One acre = 43,560 sq ft. 10,000 sq ft = 0.2295 acre. 2.5 pints/acre × 0.2295 =
0.57375 pints. 0.57375 pints × 16 fl oz/pint = 9.18 fl oz. Other options result from incorrect unit
conversions or acreage calculations.
Page 3
, Q5 DEMONSTRATE MASTERY OF CORE CONCEPTS
Which pesticide formulation poses the greatest risk of off-target drift during
application to a wind-sensitive ornamental bed, and what is the best mitigation
strategy?
A. Wettable powder (WP) - use a drift-reducing nozzle and lower boom height
B. Emulsifiable concentrate (EC) - apply with a coarse droplet spectrum and avoid temperature
inversions CORRECT
C. Soluble powder (SP) - increase carrier volume and use a fan nozzle
D. Granule (G) - apply with a spreader and water in immediately
RATIONALE: EC formulations contain solvents that produce fine droplets, increasing drift
potential. Coarse droplets and avoiding inversions reduce drift. WP and SP are less prone to
drift, and granules are not airborne.
Q6 DEMONSTRATE MASTERY OF CORE CONCEPTS
A Kentucky homeowner notices bronze-colored turf in late summer with a distinct
'smoke ring' at the patch margin. Which disease is most likely, and what is the
most effective fungicide timing?
A. Brown patch (Rhizoctonia solani) - apply preventive fungicide in late spring to early summer
CORRECT
B. Dollar spot (Clarireedia jacksonii) - apply curative fungicide immediately in mid-summer
C. Gray leaf spot (Pyricularia grisea) - apply preventive fungicide in early summer
D. Pythium blight (Pythium spp.) - apply curative fungicide with high water volumes
RATIONALE: Brown patch in tall fescue or perennial ryegrass shows a 'smoke ring' and bronzing;
preventive applications in late spring/early summer are most effective. Dollar spot has silver
dollar-sized spots, gray leaf spot has gray lesions, and Pythium blight is greasy and collapses
rapidly.
Page 4
KENTUCKY DEPARTMENT OF AGRICULTURE - 2026/2027 ACADEMIC
YEAR - QUESTIONS AND ANSWERS COVERING FOUR CORE DOMAINS
80 QUESTIONS
TABLE OF CONTENTS
# TOPIC
1 Demonstrate mastery of core concepts
2 Kentucky Category 3 Ornamental & Turf Pest Control Exam
3 Kentucky Department of Agriculture
4 2026
5 2027 Academic Year
6 Questions and Answers Covering Four Core Domains
7 Foundations of Kentucky Category 3 Ornamental & Turf Pest Control Exam - Kentucky Department of
Agriculture - 2026/2027 Academic Year - Questions and Answers Covering Four Core Domains
8 Applied Kentucky Category 3 Ornamental & Turf Pest Control Exam - Kentucky Department of Agriculture
- 2026/2027 Academic Year - Questions and Answers Covering Four Core Domains
9 Advanced Kentucky Category 3 Ornamental & Turf Pest Control Exam - Kentucky Department of
Agriculture - 2026/2027 Academic Year - Questions and Answers Covering Four Core Domains
10 Kentucky Category 3 Ornamental & Turf Pest Control Exam - Kentucky Department of Agriculture -
2026/2027 Academic Year - Questions and Answers Covering Four Core Domains Review
ABSTRACT
This study document brings together 80 carefully worded exam questions drawn from Kentucky
Category 3 Ornamental & Turf Pest Control Exam - Kentucky Department of Agriculture -
2026/2027 Academic Year - Questions and Answers Covering Four Core Domains, with the
strongest emphasis placed on Demonstrate mastery of core concepts, Kentucky Category 3
Ornamental & Turf Pest Control Exam and Kentucky Department of Agriculture. Every item follows
the wording style and level of reasoning you meet in the real paper, and each one is paired with a
clear rationale so the correct choice is never a guess. Work through the set at your own pace,
mark the questions that slow you down, then come back to them until the reasoning feels
automatic. Learners who revise this way walk into the exam room recognising the pattern behind
the questions instead of meeting them for the first time. Keep going - steady, honest practice is
what turns a difficult paper into a comfortable pass.
Page 1
,Q1 DEMONSTRATE MASTERY OF CORE CONCEPTS
In a Kentucky bluegrass lawn exhibiting irregular yellow-green patches in early
spring, a soil test reveals pH 6.8 and adequate nitrogen. Which organism is the
most likely cause, and what cultural practice is the most effective long-term
corrective measure?
A. Necrotic ring spot (Leptosphaeria korrae) - core aeration and reduced nitrogen in spring
CORRECT
B. Large patch (Rhizoctonia solani AG 2-2LP) - avoid nitrogen in spring and increase potassium
C. Summer patch (Magnaporthe poae) - irrigate deeply and infrequently during summer
D. Red thread (Laetisaria fuciformis) - apply balanced nitrogen and reduce thatch
RATIONALE: Necrotic ring spot (L. korrae) causes yellow-green rings in spring and is
exacerbated by high nitrogen and thatch; core aeration reduces thatch and improves root health.
Large patch typically occurs in zoysia/bermudagrass, summer patch is a summer disease, and
red thread presents with pink mycelium, not distinct rings.
Q2 DEMONSTRATE MASTERY OF CORE CONCEPTS
A golf course superintendent must control Poa annua in creeping bentgrass
fairways. Which herbicide program is most effective and least injurious to the
bentgrass?
A. Single spring application of prodiamine at 1.5 lb ai/A
B. Sequential applications of bispyribac-sodium (0.25 oz/A) in early spring and fall CORRECT
C. Fall applications of glyphosate (1 lb ae/A) as a spot treatment
D. Overseeding with perennial ryegrass and applying mesotrione (0.25 lb ai/A) throughout the
season
RATIONALE: Bispyribac-sodium (Velocity) is one of the few postemergence herbicides that
selectively controls Poa annua in bentgrass when applied sequentially at low rates. Prodiamine is
only preemergence and too late for established Poa. Glyphosate is nonselective and injures
bentgrass. Mesotrione plus overseeding does not provide adequate selective control.
Page 2
,Q3 DEMONSTRATE MASTERY OF CORE CONCEPTS
Which integrated pest management (IPM) principle is most critical when managing
white grubs in turfgrass, and why?
A. Preventive insecticide application at peak adult flight to reduce egg laying
B. Monitoring with soap flushes to detect early instars before applying curative products
CORRECT
C. Exclusive reliance on entomopathogenic nematodes (Heterorhabditis bacteriophora) due to
their long persistence
D. Applying imidacloprid only after visible damage appears to minimize environmental impact
RATIONALE: IPM emphasizes monitoring to determine if and when treatment is needed; soap
flushes reveal early instars when curative products are most effective. Preventive applications
without monitoring are not IPM. Nematodes are a tool but not exclusive reliance. Waiting for
visible damage is too late and violates IPM principles.
Q4 DEMONSTRATE MASTERY OF CORE CONCEPTS
A landscape contractor plans to treat a 10,000 sq ft area for dandelion and clover.
The label rate is 2.5 pints per acre. How many fluid ounces of product are
required?
A. 9.2 fl oz CORRECT
B. 12.0 fl oz
C. 16.0 fl oz
D. 20.0 fl oz
RATIONALE: One acre = 43,560 sq ft. 10,000 sq ft = 0.2295 acre. 2.5 pints/acre × 0.2295 =
0.57375 pints. 0.57375 pints × 16 fl oz/pint = 9.18 fl oz. Other options result from incorrect unit
conversions or acreage calculations.
Page 3
, Q5 DEMONSTRATE MASTERY OF CORE CONCEPTS
Which pesticide formulation poses the greatest risk of off-target drift during
application to a wind-sensitive ornamental bed, and what is the best mitigation
strategy?
A. Wettable powder (WP) - use a drift-reducing nozzle and lower boom height
B. Emulsifiable concentrate (EC) - apply with a coarse droplet spectrum and avoid temperature
inversions CORRECT
C. Soluble powder (SP) - increase carrier volume and use a fan nozzle
D. Granule (G) - apply with a spreader and water in immediately
RATIONALE: EC formulations contain solvents that produce fine droplets, increasing drift
potential. Coarse droplets and avoiding inversions reduce drift. WP and SP are less prone to
drift, and granules are not airborne.
Q6 DEMONSTRATE MASTERY OF CORE CONCEPTS
A Kentucky homeowner notices bronze-colored turf in late summer with a distinct
'smoke ring' at the patch margin. Which disease is most likely, and what is the
most effective fungicide timing?
A. Brown patch (Rhizoctonia solani) - apply preventive fungicide in late spring to early summer
CORRECT
B. Dollar spot (Clarireedia jacksonii) - apply curative fungicide immediately in mid-summer
C. Gray leaf spot (Pyricularia grisea) - apply preventive fungicide in early summer
D. Pythium blight (Pythium spp.) - apply curative fungicide with high water volumes
RATIONALE: Brown patch in tall fescue or perennial ryegrass shows a 'smoke ring' and bronzing;
preventive applications in late spring/early summer are most effective. Dollar spot has silver
dollar-sized spots, gray leaf spot has gray lesions, and Pythium blight is greasy and collapses
rapidly.
Page 4
