NYSDEC Pesticide Applicators Exam Study Guide 2026/2027 Core Certification Examination
NYSDEC PESTICIDE APPLICATORS EXAM STUDY
GUIDE 2026/2027
Comprehensive Certification Examination — 150 Questions with Rationale
Aligned with: New York State Department of Environmental Conservation (NYSDEC) Pesticide Applicator Certification
Standards • Title 6 NYCRR Part 325 • New York State Environmental Conservation Law (ECL) Article 33 • Federal Insecticide,
Fungicide, and Rodenticide Act (FIFRA) Core Competencies • EPA Worker Protection Standard (WPS, 40 CFR Part 170) • EPA
Pesticide Resistance Management PRN 2017-2 • OSHA HCS 2012 / GHS-aligned SDS.
Cognitive distribution: 25% recall • 50% application • 25% analysis (scenario-based). Style: 75% scenario-based • 25% direct
knowledge.
Special inclusions: 20 scenario-based application & safety questions • 15 label interpretation & compliance questions • 15
NYSDEC-specific regulation questions.
Emergency contacts to memorize: Poison Control 1-800-222-1222 • CHEMTREC 1-800-424-9300 • National Response Center
1-800-424-8802 • NYSDEC Spill Hotline 1-800-457-7362 • Local EMS 911.
Instructions to the candidate. This examination consists of 150 multiple-choice questions organized into nine sections. Each
question has exactly ONE best answer among options A through D; the correct option is identified with [CORRECT] and a
rationale citing NYSDEC regulations, 6 NYCRR Part 325, ECL Article 33, FIFRA, and the EPA Core Manual. Read each stem
carefully; many questions are scenario-based and require you to integrate regulatory, label, safety, and environmental
considerations. Record the single best answer for each question, then verify against the rationale to identify knowledge gaps before
sitting for the live NYSDEC Core examination.
Section 1: Pest Management Principles & Integrated Pest Management (IPM)
20 questions — IPM decision framework, action thresholds, EIL/ET, cultural/biological/mechanical/chemical/genetic tactics, resistance
management, beneficial organisms, invasive and quarantine pests, pest identification, life-cycle targeting, secondary pest outbreaks,
resurgence.
Q1: A landscape manager notices aphid populations on roses are increasing but wild ladybeetles are also present.
According to IPM principles, what is the MOST appropriate first action?
A. Immediately apply a broad-spectrum foliar insecticide to eliminate all arthropods on contact.
B. Monitor both pest and beneficial populations, identify the aphid species, and compare counts to the action threshold
before deciding. [CORRECT]
C. Release commercially reared ladybeetles at twice the wild population density to overwhelm the aphids.
D. Prune all infested terminals and dispose of them off-site regardless of monitoring data.
Correct Answer: B
Rationale: IPM requires monitoring pest AND beneficial populations and comparing counts to a pre-established action threshold before
any intervention, as emphasized in the Core Manual's IPM decision framework and ECL Article 33's definition of integrated pest
management. Releasing beneficials (C) is a valid biological tactic but should follow monitoring that confirms the threshold has been
crossed. Options A and D skip monitoring entirely, violating the IPM sequence of identify-monitor-threshold-intervene.
Aligned with 6 NYCRR Part 325 | ECL Article 33 | FIFRA Core Competencies Page 1
,NYSDEC Pesticide Applicators Exam Study Guide 2026/2027 Core Certification Examination
Q2: Which statement MOST accurately defines the Economic Injury Level (EIL)?
A. The pest density at which a control measure must be initiated to prevent the population from reaching the economic injury
level.
B. The lowest pest population density that will cause economic damage equal to the cost of controlling the pest.
[CORRECT]
C. The maximum pest population that natural enemies can suppress without chemical intervention.
D. The number of pests found per square meter after the first chemical application has been made.
Correct Answer: B
Rationale: The EIL is defined as the lowest pest density that causes yield or quality loss equal in value to the cost of control measures —
the break-even point at which management becomes economically justified. Option A describes the Economic Threshold (ET) or action
threshold, which is set below EIL to allow time to implement control before damage accrues. Options C and D are fabrications that
confuse EIL with biological carrying capacity or post-treatment sampling, neither of which corresponds to any recognized IPM concept.
Q3: A nursery operator applied a pyrethroid to control spider mites. Ten days later, mite populations rebounded to
levels higher than before treatment. Which mechanism BEST explains this resurgence?
A. The pyrethroid killed natural enemies like predatory mites and Stethorus beetles while sparing the more tolerant pest
mites, allowing rapid rebound. [CORRECT]
B. The pyrethroid directly stimulated mite reproduction by acting as a hormone analog at sublethal doses.
C. The mites had already developed cross-resistance to all mode-of-action classes before the application.
D. The spray drift oversprayed the wrong crop, leaving the target plant population untreated.
Correct Answer: A
Rationale: Pest resurgence occurs when a broad-spectrum pesticide eliminates natural enemies that were suppressing the pest but does not
fully control the pest itself, allowing the surviving pest population to reproduce rapidly without biological pressure. The Core Manual
explicitly identifies spider mite flare-ups after pyrethroid use as a classic resurgence scenario. While sublethal hormoligosis (B) has been
hypothesized for some compounds, it is not the dominant mechanism here. Option C (cross-resistance) would manifest as treatment failure
from the outset rather than a temporary reduction followed by rebound. Option D describes a misapplication, not a biological resurgence
phenomenon.
Q4: Why does the Core Manual recommend rotating pesticides among different Insecticide Resistance Action
Committee (IRAC) mode-of-action groups rather than simply alternating brand names?
A. Brand name rotation is sufficient because each brand has a unique active ingredient by law.
B. Rotation must be based on mode of action, not brand name, because different active ingredients can share the same
target-site mechanism and would select for the same resistance trait. [CORRECT]
C. IRAC groups are assigned by the EPA and rotation within the same group is mandatory under FIFRA.
D. Brand name rotation prevents cross-resistance only when products are from different registrants.
Correct Answer: B
Rationale: Resistance management depends on rotating mode-of-action groups, not brand names, because multiple distinct active
ingredients can share the same target site (e.g., all neonicotinoids act on nicotinic acetylcholine receptors and belong to IRAC Group 4A).
Rotating brands within the same IRAC group continues to select for the same resistance mechanism. The Core Manual and EPA's
Pesticide Resistance Management PRN 2017-2 both emphasize target-site rotation. IRAC is an industry body, not EPA (C), and FIFRA
does not mandate rotation in label law. Options A and D reflect common misconceptions that brand or registrant rotation confers
resistance management.
Aligned with 6 NYCRR Part 325 | ECL Article 33 | FIFRA Core Competencies Page 2
,NYSDEC Pesticide Applicators Exam Study Guide 2026/2027 Core Certification Examination
Q5: A golf course superintendent samples 10 sites on a fairway and finds an average of 8 chinch bugs per square
foot. The published action threshold is 15-20 chinch bugs per square foot. What is the correct IPM decision?
A. Apply a preventive application of a neonicotinoid immediately to stay ahead of the population curve.
B. Continue monitoring at the same sample intensity and frequency; no intervention is warranted at this time.
[CORRECT]
C. Apply a curative contact insecticide at the lowest label rate because any pest presence indicates action is needed.
D. Discard the threshold and spray at the maximum label rate because the superintendent had chinch bug damage last season.
Correct Answer: B
Rationale: Because the sampled population (8 per sq ft) is below the published action threshold (15-20 per sq ft), IPM dictates continued
monitoring without intervention — the action threshold exists specifically to prevent unnecessary, economically unjustified applications.
Options A and C both ignore the threshold concept, applying pesticide when monitoring data does not justify it. Option D compounds the
error by treating past damage as a current trigger, which is precisely the calendar-based, prevention-only approach IPM is designed to
replace. The Core Manual's threshold discussion and Cornell's turf IPM guidance both support continued monitoring here.
Q6: Which scenario is the BEST example of a secondary pest outbreak?
A. A farmer applied a fungicide for powdery mildew and the disease was fully controlled.
B. After a broad-spectrum insecticide eliminated primary lepidopteran pests, a previously minor scale insect population
exploded to damaging levels because its natural enemies had been removed. [CORRECT]
C. Two pest species co-occur naturally and both reach their respective action thresholds in the same week.
D. A new invasive pest enters the field after the primary pest was controlled by a biological agent.
Correct Answer: B
Rationale: A secondary pest outbreak occurs when a species that was previously held below damaging levels by natural enemies becomes
a problem after those natural enemies are eliminated by a broad-spectrum pesticide. The Core Manual identifies this as a key unintended
consequence of disrupting biological control. Option A is simply successful control, not an outbreak. Option C is co-occurrence of two
primary pests. Option D describes a new invasion, not a secondary outbreak from natural-enemy disruption — the ecological mechanism
is fundamentally different.
Q7: A grower releases the parasitoid Encarsia formosa against greenhouse whitefly. The release is timed for early
morning, parasitoids are released at 2 per plant, and the greenhouse vents are screened. Which step, if omitted,
would MOST likely cause the release to fail?
A. Failing to first apply a broad-spectrum pyrethroid to 'clean up' other arthropods before releasing the parasitoid.
B. Failing to confirm that the whitefly species is actually Trialeurodes vaporariorum (greenhouse whitefly), which is the
principal host for Encarsia formosa, before releasing the parasitoid. [CORRECT]
C. Failing to water the crop the day of release so that humidity remains below 50 percent.
D. Failing to apply a foliar nitrogen fertilizer to increase leaf tissue quality for the developing parasitoid larvae.
Correct Answer: B
Rationale: Encarsia formosa is a host-specific parasitoid whose efficacy depends on correctly matching the parasitoid to the target
whitefly species; releasing it against Bemisia tabaci (silverleaf whitefly) or other non-target species typically yields poor control. The Core
Manual stresses accurate pest identification before any biological control release. A 'cleanup' pyrethroid (A) would actually kill the
just-released parasitoid — the opposite of helpful. Humidity (C) and leaf nitrogen (D) are secondary factors and rarely the deciding
failure point in greenhouse biological control programs.
Aligned with 6 NYCRR Part 325 | ECL Article 33 | FIFRA Core Competencies Page 3
, NYSDEC Pesticide Applicators Exam Study Guide 2026/2027 Core Certification Examination
Q8: Why does the Core Manual list accurate pest identification as the FIRST step in any IPM program?
A. Because pest identification determines whether the organism is actually a pest, what its life cycle and vulnerable
stages are, and what management tactics will be effective against it. [CORRECT]
B. Because the EPA requires pest genus and species on every pesticide application record under FIFRA Section 7.
C. Because the NYSDEC Bureau of Pesticides Management audits species identification on every commercial application.
D. Because pesticide active ingredients are formulated only for one genus of pest each.
Correct Answer: A
Rationale: Accurate identification is the foundation of IPM because the pest species determines its biology, life cycle, vulnerable stage,
economic threshold, and the appropriate control tactic — applying a tactic to the wrong species wastes money and may harm non-targets.
The Core Manual's IPM pyramid places identification at the base. Options B, C, and D overstate regulatory requirements or fabricate
formulation restrictions that do not exist; FIFRA record requirements do not include species identification, NYSDEC does not audit species
on every application, and most active ingredients are labeled for multiple pest genera.
Q9: A sterile insect technique (SIT) program is being considered for an isolated release of sterile male codling
moths in an orchard. Which condition is MOST critical to the program's success?
A. Releasing sterile females at twice the rate of males to overwhelm the wild female population.
B. Releasing mass-reared, gamma- or X-ray-sterilized males in numbers sufficient to outcompete wild males for
matings, in an isolated area to minimize wild-female immigration. [CORRECT]
C. Releasing genetically modified males that express an insecticidal toxin in their semen.
D. Releasing only the F1 progeny of wild-collected females mated with sterile males in the laboratory.
Correct Answer: B
Rationale: Sterile Insect Technique works by flooding the mating population with mass-reared, sterilized males that outcompete wild
males for female matings; resulting matings produce no viable offspring, driving population decline. The technique is most effective in
isolated areas where wild females cannot immigrate and re-mate, as documented in the Core Manual's genetic-control section. Sterile
females (A) do not contribute because female codling moth typically mates once and the wild males would still mate with wild females.
Option C describes an unregistered transgenic approach that is not SIT. Option D misstates the technique — the released insects ARE the
sterile males, not their offspring.
Q10: Which scenario describes a quarantine pest?
A. A common native insect that occasionally reaches damaging densities but is well established throughout the continent.
B. A pest of regulatory concern that is absent from, or of limited distribution in, an area and is subject to official
quarantine regulations restricting its spread. [CORRECT]
C. Any insect that has developed resistance to a quarantine-classified pesticide active ingredient.
D. A beneficial organism held under permit for experimental field release.
Correct Answer: B
Rationale: A quarantine pest is defined under international phytosanitary standards (IPPC/ISPM No. 5) as a pest of potential economic
or environmental importance to an area where it is not yet present, or present with limited distribution and subject to official control —
typically enforced through federal and state quarantines. The Core Manual identifies such pests as high-priority targets for early
detection and regulatory action. Option A describes an endemic pest, not a quarantine one. Option C confuses 'quarantine' the regulatory
status with a pesticide class that does not exist. Option D describes a permitted biological control organism, not a quarantine pest.
Aligned with 6 NYCRR Part 325 | ECL Article 33 | FIFRA Core Competencies Page 4
NYSDEC PESTICIDE APPLICATORS EXAM STUDY
GUIDE 2026/2027
Comprehensive Certification Examination — 150 Questions with Rationale
Aligned with: New York State Department of Environmental Conservation (NYSDEC) Pesticide Applicator Certification
Standards • Title 6 NYCRR Part 325 • New York State Environmental Conservation Law (ECL) Article 33 • Federal Insecticide,
Fungicide, and Rodenticide Act (FIFRA) Core Competencies • EPA Worker Protection Standard (WPS, 40 CFR Part 170) • EPA
Pesticide Resistance Management PRN 2017-2 • OSHA HCS 2012 / GHS-aligned SDS.
Cognitive distribution: 25% recall • 50% application • 25% analysis (scenario-based). Style: 75% scenario-based • 25% direct
knowledge.
Special inclusions: 20 scenario-based application & safety questions • 15 label interpretation & compliance questions • 15
NYSDEC-specific regulation questions.
Emergency contacts to memorize: Poison Control 1-800-222-1222 • CHEMTREC 1-800-424-9300 • National Response Center
1-800-424-8802 • NYSDEC Spill Hotline 1-800-457-7362 • Local EMS 911.
Instructions to the candidate. This examination consists of 150 multiple-choice questions organized into nine sections. Each
question has exactly ONE best answer among options A through D; the correct option is identified with [CORRECT] and a
rationale citing NYSDEC regulations, 6 NYCRR Part 325, ECL Article 33, FIFRA, and the EPA Core Manual. Read each stem
carefully; many questions are scenario-based and require you to integrate regulatory, label, safety, and environmental
considerations. Record the single best answer for each question, then verify against the rationale to identify knowledge gaps before
sitting for the live NYSDEC Core examination.
Section 1: Pest Management Principles & Integrated Pest Management (IPM)
20 questions — IPM decision framework, action thresholds, EIL/ET, cultural/biological/mechanical/chemical/genetic tactics, resistance
management, beneficial organisms, invasive and quarantine pests, pest identification, life-cycle targeting, secondary pest outbreaks,
resurgence.
Q1: A landscape manager notices aphid populations on roses are increasing but wild ladybeetles are also present.
According to IPM principles, what is the MOST appropriate first action?
A. Immediately apply a broad-spectrum foliar insecticide to eliminate all arthropods on contact.
B. Monitor both pest and beneficial populations, identify the aphid species, and compare counts to the action threshold
before deciding. [CORRECT]
C. Release commercially reared ladybeetles at twice the wild population density to overwhelm the aphids.
D. Prune all infested terminals and dispose of them off-site regardless of monitoring data.
Correct Answer: B
Rationale: IPM requires monitoring pest AND beneficial populations and comparing counts to a pre-established action threshold before
any intervention, as emphasized in the Core Manual's IPM decision framework and ECL Article 33's definition of integrated pest
management. Releasing beneficials (C) is a valid biological tactic but should follow monitoring that confirms the threshold has been
crossed. Options A and D skip monitoring entirely, violating the IPM sequence of identify-monitor-threshold-intervene.
Aligned with 6 NYCRR Part 325 | ECL Article 33 | FIFRA Core Competencies Page 1
,NYSDEC Pesticide Applicators Exam Study Guide 2026/2027 Core Certification Examination
Q2: Which statement MOST accurately defines the Economic Injury Level (EIL)?
A. The pest density at which a control measure must be initiated to prevent the population from reaching the economic injury
level.
B. The lowest pest population density that will cause economic damage equal to the cost of controlling the pest.
[CORRECT]
C. The maximum pest population that natural enemies can suppress without chemical intervention.
D. The number of pests found per square meter after the first chemical application has been made.
Correct Answer: B
Rationale: The EIL is defined as the lowest pest density that causes yield or quality loss equal in value to the cost of control measures —
the break-even point at which management becomes economically justified. Option A describes the Economic Threshold (ET) or action
threshold, which is set below EIL to allow time to implement control before damage accrues. Options C and D are fabrications that
confuse EIL with biological carrying capacity or post-treatment sampling, neither of which corresponds to any recognized IPM concept.
Q3: A nursery operator applied a pyrethroid to control spider mites. Ten days later, mite populations rebounded to
levels higher than before treatment. Which mechanism BEST explains this resurgence?
A. The pyrethroid killed natural enemies like predatory mites and Stethorus beetles while sparing the more tolerant pest
mites, allowing rapid rebound. [CORRECT]
B. The pyrethroid directly stimulated mite reproduction by acting as a hormone analog at sublethal doses.
C. The mites had already developed cross-resistance to all mode-of-action classes before the application.
D. The spray drift oversprayed the wrong crop, leaving the target plant population untreated.
Correct Answer: A
Rationale: Pest resurgence occurs when a broad-spectrum pesticide eliminates natural enemies that were suppressing the pest but does not
fully control the pest itself, allowing the surviving pest population to reproduce rapidly without biological pressure. The Core Manual
explicitly identifies spider mite flare-ups after pyrethroid use as a classic resurgence scenario. While sublethal hormoligosis (B) has been
hypothesized for some compounds, it is not the dominant mechanism here. Option C (cross-resistance) would manifest as treatment failure
from the outset rather than a temporary reduction followed by rebound. Option D describes a misapplication, not a biological resurgence
phenomenon.
Q4: Why does the Core Manual recommend rotating pesticides among different Insecticide Resistance Action
Committee (IRAC) mode-of-action groups rather than simply alternating brand names?
A. Brand name rotation is sufficient because each brand has a unique active ingredient by law.
B. Rotation must be based on mode of action, not brand name, because different active ingredients can share the same
target-site mechanism and would select for the same resistance trait. [CORRECT]
C. IRAC groups are assigned by the EPA and rotation within the same group is mandatory under FIFRA.
D. Brand name rotation prevents cross-resistance only when products are from different registrants.
Correct Answer: B
Rationale: Resistance management depends on rotating mode-of-action groups, not brand names, because multiple distinct active
ingredients can share the same target site (e.g., all neonicotinoids act on nicotinic acetylcholine receptors and belong to IRAC Group 4A).
Rotating brands within the same IRAC group continues to select for the same resistance mechanism. The Core Manual and EPA's
Pesticide Resistance Management PRN 2017-2 both emphasize target-site rotation. IRAC is an industry body, not EPA (C), and FIFRA
does not mandate rotation in label law. Options A and D reflect common misconceptions that brand or registrant rotation confers
resistance management.
Aligned with 6 NYCRR Part 325 | ECL Article 33 | FIFRA Core Competencies Page 2
,NYSDEC Pesticide Applicators Exam Study Guide 2026/2027 Core Certification Examination
Q5: A golf course superintendent samples 10 sites on a fairway and finds an average of 8 chinch bugs per square
foot. The published action threshold is 15-20 chinch bugs per square foot. What is the correct IPM decision?
A. Apply a preventive application of a neonicotinoid immediately to stay ahead of the population curve.
B. Continue monitoring at the same sample intensity and frequency; no intervention is warranted at this time.
[CORRECT]
C. Apply a curative contact insecticide at the lowest label rate because any pest presence indicates action is needed.
D. Discard the threshold and spray at the maximum label rate because the superintendent had chinch bug damage last season.
Correct Answer: B
Rationale: Because the sampled population (8 per sq ft) is below the published action threshold (15-20 per sq ft), IPM dictates continued
monitoring without intervention — the action threshold exists specifically to prevent unnecessary, economically unjustified applications.
Options A and C both ignore the threshold concept, applying pesticide when monitoring data does not justify it. Option D compounds the
error by treating past damage as a current trigger, which is precisely the calendar-based, prevention-only approach IPM is designed to
replace. The Core Manual's threshold discussion and Cornell's turf IPM guidance both support continued monitoring here.
Q6: Which scenario is the BEST example of a secondary pest outbreak?
A. A farmer applied a fungicide for powdery mildew and the disease was fully controlled.
B. After a broad-spectrum insecticide eliminated primary lepidopteran pests, a previously minor scale insect population
exploded to damaging levels because its natural enemies had been removed. [CORRECT]
C. Two pest species co-occur naturally and both reach their respective action thresholds in the same week.
D. A new invasive pest enters the field after the primary pest was controlled by a biological agent.
Correct Answer: B
Rationale: A secondary pest outbreak occurs when a species that was previously held below damaging levels by natural enemies becomes
a problem after those natural enemies are eliminated by a broad-spectrum pesticide. The Core Manual identifies this as a key unintended
consequence of disrupting biological control. Option A is simply successful control, not an outbreak. Option C is co-occurrence of two
primary pests. Option D describes a new invasion, not a secondary outbreak from natural-enemy disruption — the ecological mechanism
is fundamentally different.
Q7: A grower releases the parasitoid Encarsia formosa against greenhouse whitefly. The release is timed for early
morning, parasitoids are released at 2 per plant, and the greenhouse vents are screened. Which step, if omitted,
would MOST likely cause the release to fail?
A. Failing to first apply a broad-spectrum pyrethroid to 'clean up' other arthropods before releasing the parasitoid.
B. Failing to confirm that the whitefly species is actually Trialeurodes vaporariorum (greenhouse whitefly), which is the
principal host for Encarsia formosa, before releasing the parasitoid. [CORRECT]
C. Failing to water the crop the day of release so that humidity remains below 50 percent.
D. Failing to apply a foliar nitrogen fertilizer to increase leaf tissue quality for the developing parasitoid larvae.
Correct Answer: B
Rationale: Encarsia formosa is a host-specific parasitoid whose efficacy depends on correctly matching the parasitoid to the target
whitefly species; releasing it against Bemisia tabaci (silverleaf whitefly) or other non-target species typically yields poor control. The Core
Manual stresses accurate pest identification before any biological control release. A 'cleanup' pyrethroid (A) would actually kill the
just-released parasitoid — the opposite of helpful. Humidity (C) and leaf nitrogen (D) are secondary factors and rarely the deciding
failure point in greenhouse biological control programs.
Aligned with 6 NYCRR Part 325 | ECL Article 33 | FIFRA Core Competencies Page 3
, NYSDEC Pesticide Applicators Exam Study Guide 2026/2027 Core Certification Examination
Q8: Why does the Core Manual list accurate pest identification as the FIRST step in any IPM program?
A. Because pest identification determines whether the organism is actually a pest, what its life cycle and vulnerable
stages are, and what management tactics will be effective against it. [CORRECT]
B. Because the EPA requires pest genus and species on every pesticide application record under FIFRA Section 7.
C. Because the NYSDEC Bureau of Pesticides Management audits species identification on every commercial application.
D. Because pesticide active ingredients are formulated only for one genus of pest each.
Correct Answer: A
Rationale: Accurate identification is the foundation of IPM because the pest species determines its biology, life cycle, vulnerable stage,
economic threshold, and the appropriate control tactic — applying a tactic to the wrong species wastes money and may harm non-targets.
The Core Manual's IPM pyramid places identification at the base. Options B, C, and D overstate regulatory requirements or fabricate
formulation restrictions that do not exist; FIFRA record requirements do not include species identification, NYSDEC does not audit species
on every application, and most active ingredients are labeled for multiple pest genera.
Q9: A sterile insect technique (SIT) program is being considered for an isolated release of sterile male codling
moths in an orchard. Which condition is MOST critical to the program's success?
A. Releasing sterile females at twice the rate of males to overwhelm the wild female population.
B. Releasing mass-reared, gamma- or X-ray-sterilized males in numbers sufficient to outcompete wild males for
matings, in an isolated area to minimize wild-female immigration. [CORRECT]
C. Releasing genetically modified males that express an insecticidal toxin in their semen.
D. Releasing only the F1 progeny of wild-collected females mated with sterile males in the laboratory.
Correct Answer: B
Rationale: Sterile Insect Technique works by flooding the mating population with mass-reared, sterilized males that outcompete wild
males for female matings; resulting matings produce no viable offspring, driving population decline. The technique is most effective in
isolated areas where wild females cannot immigrate and re-mate, as documented in the Core Manual's genetic-control section. Sterile
females (A) do not contribute because female codling moth typically mates once and the wild males would still mate with wild females.
Option C describes an unregistered transgenic approach that is not SIT. Option D misstates the technique — the released insects ARE the
sterile males, not their offspring.
Q10: Which scenario describes a quarantine pest?
A. A common native insect that occasionally reaches damaging densities but is well established throughout the continent.
B. A pest of regulatory concern that is absent from, or of limited distribution in, an area and is subject to official
quarantine regulations restricting its spread. [CORRECT]
C. Any insect that has developed resistance to a quarantine-classified pesticide active ingredient.
D. A beneficial organism held under permit for experimental field release.
Correct Answer: B
Rationale: A quarantine pest is defined under international phytosanitary standards (IPPC/ISPM No. 5) as a pest of potential economic
or environmental importance to an area where it is not yet present, or present with limited distribution and subject to official control —
typically enforced through federal and state quarantines. The Core Manual identifies such pests as high-priority targets for early
detection and regulatory action. Option A describes an endemic pest, not a quarantine one. Option C confuses 'quarantine' the regulatory
status with a pesticide class that does not exist. Option D describes a permitted biological control organism, not a quarantine pest.
Aligned with 6 NYCRR Part 325 | ECL Article 33 | FIFRA Core Competencies Page 4
