GENERAL PEST MANAGEMENT 7A EXAM 2026 ACTUAL
EXAM COMPLETE WITH DETAILED VERIFIED
ANSWERS (100% CORRECT ANSWERS)/ALREADY
GRADED A+ - 135 Questions
Section 1: Integrated Pest Management (IPM) Principles (Questions 1-15)
1 In a 50-hectare organic apple orchard, codling moth (Cydia pomonella) has been managed using mating
disruption and selective insecticides. This season, trap captures exceed 5 moths per trap per week, and fruit
damage at harvest is projected to reach 3.5%, above the 2% economic injury level. Which IPM-based
intervention should be prioritized to minimize economic loss while maintaining organic certification?
A) Apply a broad-spectrum pyrethroid to immediately reduce adult populations.
B) Increase the density of pheromone dispensers and introduce Trichogramma wasp releases.
C) Harvest fruit early to avoid peak damage and accept the loss.
D) Switch to a conventional orchard system to allow use of organophosphates.
Answer: B
Rationale: Option B combines enhanced mating disruption (a cultural/behavioral tactic) with augmentative
biological control (Trichogramma), both organic-compliant and targeting different life stages. Option A uses a
non-organic pesticide. Option C abandons proactive management. Option D abandons organic system, violating
IPM's preference for least-toxic methods.
2 A pest management consultant is evaluating a new monitoring trap design for thrips in greenhouse peppers. The
trap captures both pest and beneficial insects. Which metric is most critical for determining whether the trap is
suitable for IPM decision-making?
A) The total number of thrips captured per day.
B) The ratio of pest to beneficial insects captured.
C) The cost per trap relative to standard yellow sticky cards.
D) The trap's ability to capture thrips at low population densities.
Answer: B
Rationale: IPM monitoring must assess both pest and beneficial populations to avoid disrupting biological control.
Option B directly addresses this balance. Options A and D focus only on pest capture, ignoring beneficial impact.
Option C is logistical but not central to IPM decision-making.
3 In a rice paddy, the economic injury level (EIL) for stem borer is 5% damaged stems. Current damage is 4.5%,
and the pest population is increasing exponentially. The action threshold is set at 80% of the EIL. Given that
natural enemy populations are low, which action is most consistent with IPM principles?
A) Immediately apply a systemic insecticide to prevent damage from reaching the EIL.
B) Delay intervention until damage reaches the EIL to avoid unnecessary pesticide use.
C) Implement water management and introduce Trichogramma egg parasitoids.
D) Increase nitrogen fertilization to compensate for potential yield loss.
Answer: A
Rationale: With low natural enemies and exponential growth, waiting risks exceeding EIL. Option A uses the action
threshold (80% EIL) to intervene proactively with a selective systemic insecticide, minimizing crop loss. Option B
violates IPM's action threshold principle. Option C may be too slow. Option D does not address pest damage.
,4 A researcher is developing an IPM program for a novel invasive pest. Which sequence of steps best reflects the
IPM decision-making process?
A) Identify pest -> establish EIL -> monitor -> select control tactics -> evaluate.
B) Monitor -> identify pest -> apply broad-spectrum insecticide -> evaluate.
C) Establish EIL -> apply biological control -> monitor -> adjust.
D) Select control tactics -> monitor -> identify pest -> establish EIL.
Answer: A
Rationale: IPM follows a logical sequence: pest identification, then setting economic injury levels, monitoring to
compare with thresholds, selecting appropriate tactics, and evaluating outcomes. Option A matches this. Options B,
C, and D skip steps or reverse order, violating IPM principles.
5 In a soybean field, defoliation by velvetbean caterpillar reaches 30% at the pod-filling stage. The calculated EIL
is 35% defoliation. However, the field also has a high population of predatory stink bugs that suppress the
caterpillar. According to IPM principles, what should be done?
A) Apply a selective insecticide to prevent defoliation from reaching the EIL.
B) Do nothing, as the EIL has not been reached and natural enemies are present.
C) Apply a broad-spectrum insecticide to control both caterpillar and stink bugs.
D) Harvest the crop early to avoid further damage.
Answer: B
Rationale: IPM emphasizes using natural enemies as a free resource. Since defoliation is below the EIL and
predators are active, intervention is unnecessary. Option A would disrupt biological control. Option C kills
beneficials. Option D is premature and not necessary.
6 Which of the following best describes the relationship between economic injury level (EIL) and action threshold
(AT) in IPM?
A) AT is set higher than EIL to allow a safety margin.
B) AT is set lower than EIL to trigger intervention before economic loss occurs.
C) AT equals EIL in all cases to simplify decision-making.
D) AT is determined solely by pest density, independent of crop value.
Answer: B
Rationale: The action threshold is typically set below the EIL to allow time for control measures to take effect
before damage reaches the EIL. Option A is incorrect because AT is lower, not higher. Option C is false; AT is
usually lower. Option D ignores that AT considers crop value and control costs.
7 A greenhouse grower uses banker plants to support Aphidius colemani populations for aphid control. After
introducing the banker plants, aphid populations initially decline but then resurge. Which IPM principle is most
likely being violated?
A) Use of multiple control tactics simultaneously.
B) Regular monitoring and record-keeping.
C) Preventive cultural practices.
D) Economic threshold-based decision-making.
Answer: B
Rationale: The resurgence suggests that monitoring may have been inadequate, allowing aphid populations to
rebound before corrective action. IPM requires regular monitoring to detect changes. Option A is not violated if
multiple tactics are used. Option C is not directly relevant. Option D is related but monitoring is the key missing
element.
,8 A municipality is implementing an IPM program for mosquito control. Which combination of tactics best
exemplifies the IPM approach?
A) Weekly fogging with malathion and elimination of standing water.
B) Source reduction, larviciding with Bti, and public education.
C) Aerial spraying of naled and use of mosquito fish in ponds.
D) Exclusive reliance on biological control without monitoring.
Answer: B
Rationale: IPM integrates multiple strategies: cultural (source reduction), biological (Bti larvicide), and educational.
Option A relies heavily on chemical fogging. Option C uses both chemical and biological but lacks monitoring.
Option D lacks monitoring and other tactics.
9 In a vineyard, grape berry moth is managed with pheromone mating disruption. Mid-season monitoring reveals
that trap shutdown has not occurred, and damage is increasing. Which IPM-compatible adjustment should be
made?
A) Increase the pheromone release rate and apply Bacillus thuringiensis.
B) Switch to a calendar-based spray schedule of broad-spectrum insecticides.
C) Remove all pheromone dispensers and rely on natural enemies.
D) Harvest grapes early to salvage what remains.
Answer: A
Rationale: Option A adjusts the mating disruption (increase release rate) and adds a selective biological insecticide
(Bt) targeting larvae, consistent with IPM. Option B abandons IPM for calendar sprays. Option C removes a
working tactic without evidence. Option D is reactive, not proactive.
10 A pest manager is evaluating a new pesticide for use in an IPM program. Which characteristic is most
important for compatibility with IPM?
A) Broad-spectrum activity to control multiple pests.
B) Short residual activity and low toxicity to natural enemies.
C) Low cost per application compared to alternatives.
D) High volatility to ensure rapid dispersal.
Answer: B
Rationale: IPM prioritizes selective pesticides that preserve natural enemies. Short residual activity reduces
environmental impact. Option A is counterproductive as broad-spectrum kills beneficials. Option C is economic
but not IPM-specific. Option D may cause off-target drift.
11 In an IPM program for a greenhouse, a pest population is found to exceed the economic threshold for
whiteflies. The crop is in the flowering stage, and natural enemies are present at low levels. Which combination
of actions aligns best with IPM principles?
A) Immediately apply a broad-spectrum insecticide to reduce whitefly numbers, then reintroduce natural enemies
after a waiting period.
B) Apply a selective insecticide that targets whiteflies with minimal impact on natural enemies, and augment
with released parasitoids.
C) Rely solely on biological control by releasing large numbers of natural enemies without any chemical
intervention.
D) Increase plant resistance by applying a systemic fungicide to boost plant health, hoping to reduce whitefly
feeding.
Answer: B
, Rationale: Option B best integrates chemical and biological methods by using a selective insecticide to lower pest
numbers while preserving and augmenting natural enemies, aligning with IPM's goal of minimizing disruption.
Option A uses a broad-spectrum insecticide that would harm natural enemies, violating IPM principles. Option C
ignores the need for immediate reduction when the economic threshold is exceeded. Option D uses a fungicide,
which does not directly address whitefly control and is not part of a standard IPM approach for this pest.
12 A field scout reports that a corn crop has 15% of plants infested with European corn borer larvae, and the
economic injury level is 20%. The current pest density is below the economic threshold. According to IPM
principles, which action is most appropriate?
A) Apply a preventive insecticide treatment to ensure pest numbers do not rise further.
B) Do nothing and continue monitoring, as the pest level does not warrant intervention.
C) Release a large number of Trichogramma wasps to suppress the pest population.
D) Rotate to a non-host crop next season to reduce future pest pressure.
Answer: B
Rationale: Since the infestation is below the economic threshold, IPM principles dictate that intervention is not
necessary; monitoring should continue. Option A would be unnecessary and could disrupt beneficial organisms.
Option C, biological control, is a valid tactic but is not required when pest levels are below threshold and natural
enemies may already be present. Option D is a long-term cultural practice but is not an immediate action for the
current season.
13 In an urban IPM program for cockroach management in a restaurant, which of the following strategies
exemplifies the principle of 'suppression' rather than 'eradication'?
A) Sealing all cracks and crevices to prevent cockroach entry and harborage.
B) Applying a gel bait in targeted locations to reduce the population to a tolerable level.
C) Using a total-release fogger to kill all cockroaches in the building at once.
D) Implementing a strict sanitation schedule to remove food and water sources.
Answer: B
Rationale: Suppression aims to reduce pest populations to acceptable levels, not eliminate them entirely. Option B,
using gel baits to reduce cockroach numbers to a tolerable level, is a suppression tactic. Option A (exclusion) and D
(sanitation) are preventive measures. Option C (fogging) aims for eradication, which is often impractical and not
sustainable in IPM.
14 A vineyard implements an IPM program where pheromone traps are used to monitor grape berry moth
populations. The trapping data over two weeks shows a consistent catch of 5 moths per trap per week, and the
economic threshold is 10 moths per trap per week. The grower notices an increase in parasitic wasp activity.
According to IPM principles, what is the most appropriate action?
A) Apply a broad-spectrum insecticide immediately to prevent any potential crop loss.
B) Apply a selective insecticide that targets moth larvae while sparing wasps.
C) Continue monitoring and rely on natural biological control, as pest levels are below threshold and natural
enemies are present.
D) Increase the number of pheromone traps to disrupt mating and reduce pest populations.
Answer: C
Rationale: With pest levels below the economic threshold and natural enemy activity increasing, IPM principles
support continued monitoring and reliance on biological control. Option A is unnecessary and could harm
beneficial wasps. Option B, while selective, is still not justified when pest levels are below threshold. Option D,
mating disruption using pheromones, is a valid tactic but not needed at current pest levels and would be an
unnecessary expense.
EXAM COMPLETE WITH DETAILED VERIFIED
ANSWERS (100% CORRECT ANSWERS)/ALREADY
GRADED A+ - 135 Questions
Section 1: Integrated Pest Management (IPM) Principles (Questions 1-15)
1 In a 50-hectare organic apple orchard, codling moth (Cydia pomonella) has been managed using mating
disruption and selective insecticides. This season, trap captures exceed 5 moths per trap per week, and fruit
damage at harvest is projected to reach 3.5%, above the 2% economic injury level. Which IPM-based
intervention should be prioritized to minimize economic loss while maintaining organic certification?
A) Apply a broad-spectrum pyrethroid to immediately reduce adult populations.
B) Increase the density of pheromone dispensers and introduce Trichogramma wasp releases.
C) Harvest fruit early to avoid peak damage and accept the loss.
D) Switch to a conventional orchard system to allow use of organophosphates.
Answer: B
Rationale: Option B combines enhanced mating disruption (a cultural/behavioral tactic) with augmentative
biological control (Trichogramma), both organic-compliant and targeting different life stages. Option A uses a
non-organic pesticide. Option C abandons proactive management. Option D abandons organic system, violating
IPM's preference for least-toxic methods.
2 A pest management consultant is evaluating a new monitoring trap design for thrips in greenhouse peppers. The
trap captures both pest and beneficial insects. Which metric is most critical for determining whether the trap is
suitable for IPM decision-making?
A) The total number of thrips captured per day.
B) The ratio of pest to beneficial insects captured.
C) The cost per trap relative to standard yellow sticky cards.
D) The trap's ability to capture thrips at low population densities.
Answer: B
Rationale: IPM monitoring must assess both pest and beneficial populations to avoid disrupting biological control.
Option B directly addresses this balance. Options A and D focus only on pest capture, ignoring beneficial impact.
Option C is logistical but not central to IPM decision-making.
3 In a rice paddy, the economic injury level (EIL) for stem borer is 5% damaged stems. Current damage is 4.5%,
and the pest population is increasing exponentially. The action threshold is set at 80% of the EIL. Given that
natural enemy populations are low, which action is most consistent with IPM principles?
A) Immediately apply a systemic insecticide to prevent damage from reaching the EIL.
B) Delay intervention until damage reaches the EIL to avoid unnecessary pesticide use.
C) Implement water management and introduce Trichogramma egg parasitoids.
D) Increase nitrogen fertilization to compensate for potential yield loss.
Answer: A
Rationale: With low natural enemies and exponential growth, waiting risks exceeding EIL. Option A uses the action
threshold (80% EIL) to intervene proactively with a selective systemic insecticide, minimizing crop loss. Option B
violates IPM's action threshold principle. Option C may be too slow. Option D does not address pest damage.
,4 A researcher is developing an IPM program for a novel invasive pest. Which sequence of steps best reflects the
IPM decision-making process?
A) Identify pest -> establish EIL -> monitor -> select control tactics -> evaluate.
B) Monitor -> identify pest -> apply broad-spectrum insecticide -> evaluate.
C) Establish EIL -> apply biological control -> monitor -> adjust.
D) Select control tactics -> monitor -> identify pest -> establish EIL.
Answer: A
Rationale: IPM follows a logical sequence: pest identification, then setting economic injury levels, monitoring to
compare with thresholds, selecting appropriate tactics, and evaluating outcomes. Option A matches this. Options B,
C, and D skip steps or reverse order, violating IPM principles.
5 In a soybean field, defoliation by velvetbean caterpillar reaches 30% at the pod-filling stage. The calculated EIL
is 35% defoliation. However, the field also has a high population of predatory stink bugs that suppress the
caterpillar. According to IPM principles, what should be done?
A) Apply a selective insecticide to prevent defoliation from reaching the EIL.
B) Do nothing, as the EIL has not been reached and natural enemies are present.
C) Apply a broad-spectrum insecticide to control both caterpillar and stink bugs.
D) Harvest the crop early to avoid further damage.
Answer: B
Rationale: IPM emphasizes using natural enemies as a free resource. Since defoliation is below the EIL and
predators are active, intervention is unnecessary. Option A would disrupt biological control. Option C kills
beneficials. Option D is premature and not necessary.
6 Which of the following best describes the relationship between economic injury level (EIL) and action threshold
(AT) in IPM?
A) AT is set higher than EIL to allow a safety margin.
B) AT is set lower than EIL to trigger intervention before economic loss occurs.
C) AT equals EIL in all cases to simplify decision-making.
D) AT is determined solely by pest density, independent of crop value.
Answer: B
Rationale: The action threshold is typically set below the EIL to allow time for control measures to take effect
before damage reaches the EIL. Option A is incorrect because AT is lower, not higher. Option C is false; AT is
usually lower. Option D ignores that AT considers crop value and control costs.
7 A greenhouse grower uses banker plants to support Aphidius colemani populations for aphid control. After
introducing the banker plants, aphid populations initially decline but then resurge. Which IPM principle is most
likely being violated?
A) Use of multiple control tactics simultaneously.
B) Regular monitoring and record-keeping.
C) Preventive cultural practices.
D) Economic threshold-based decision-making.
Answer: B
Rationale: The resurgence suggests that monitoring may have been inadequate, allowing aphid populations to
rebound before corrective action. IPM requires regular monitoring to detect changes. Option A is not violated if
multiple tactics are used. Option C is not directly relevant. Option D is related but monitoring is the key missing
element.
,8 A municipality is implementing an IPM program for mosquito control. Which combination of tactics best
exemplifies the IPM approach?
A) Weekly fogging with malathion and elimination of standing water.
B) Source reduction, larviciding with Bti, and public education.
C) Aerial spraying of naled and use of mosquito fish in ponds.
D) Exclusive reliance on biological control without monitoring.
Answer: B
Rationale: IPM integrates multiple strategies: cultural (source reduction), biological (Bti larvicide), and educational.
Option A relies heavily on chemical fogging. Option C uses both chemical and biological but lacks monitoring.
Option D lacks monitoring and other tactics.
9 In a vineyard, grape berry moth is managed with pheromone mating disruption. Mid-season monitoring reveals
that trap shutdown has not occurred, and damage is increasing. Which IPM-compatible adjustment should be
made?
A) Increase the pheromone release rate and apply Bacillus thuringiensis.
B) Switch to a calendar-based spray schedule of broad-spectrum insecticides.
C) Remove all pheromone dispensers and rely on natural enemies.
D) Harvest grapes early to salvage what remains.
Answer: A
Rationale: Option A adjusts the mating disruption (increase release rate) and adds a selective biological insecticide
(Bt) targeting larvae, consistent with IPM. Option B abandons IPM for calendar sprays. Option C removes a
working tactic without evidence. Option D is reactive, not proactive.
10 A pest manager is evaluating a new pesticide for use in an IPM program. Which characteristic is most
important for compatibility with IPM?
A) Broad-spectrum activity to control multiple pests.
B) Short residual activity and low toxicity to natural enemies.
C) Low cost per application compared to alternatives.
D) High volatility to ensure rapid dispersal.
Answer: B
Rationale: IPM prioritizes selective pesticides that preserve natural enemies. Short residual activity reduces
environmental impact. Option A is counterproductive as broad-spectrum kills beneficials. Option C is economic
but not IPM-specific. Option D may cause off-target drift.
11 In an IPM program for a greenhouse, a pest population is found to exceed the economic threshold for
whiteflies. The crop is in the flowering stage, and natural enemies are present at low levels. Which combination
of actions aligns best with IPM principles?
A) Immediately apply a broad-spectrum insecticide to reduce whitefly numbers, then reintroduce natural enemies
after a waiting period.
B) Apply a selective insecticide that targets whiteflies with minimal impact on natural enemies, and augment
with released parasitoids.
C) Rely solely on biological control by releasing large numbers of natural enemies without any chemical
intervention.
D) Increase plant resistance by applying a systemic fungicide to boost plant health, hoping to reduce whitefly
feeding.
Answer: B
, Rationale: Option B best integrates chemical and biological methods by using a selective insecticide to lower pest
numbers while preserving and augmenting natural enemies, aligning with IPM's goal of minimizing disruption.
Option A uses a broad-spectrum insecticide that would harm natural enemies, violating IPM principles. Option C
ignores the need for immediate reduction when the economic threshold is exceeded. Option D uses a fungicide,
which does not directly address whitefly control and is not part of a standard IPM approach for this pest.
12 A field scout reports that a corn crop has 15% of plants infested with European corn borer larvae, and the
economic injury level is 20%. The current pest density is below the economic threshold. According to IPM
principles, which action is most appropriate?
A) Apply a preventive insecticide treatment to ensure pest numbers do not rise further.
B) Do nothing and continue monitoring, as the pest level does not warrant intervention.
C) Release a large number of Trichogramma wasps to suppress the pest population.
D) Rotate to a non-host crop next season to reduce future pest pressure.
Answer: B
Rationale: Since the infestation is below the economic threshold, IPM principles dictate that intervention is not
necessary; monitoring should continue. Option A would be unnecessary and could disrupt beneficial organisms.
Option C, biological control, is a valid tactic but is not required when pest levels are below threshold and natural
enemies may already be present. Option D is a long-term cultural practice but is not an immediate action for the
current season.
13 In an urban IPM program for cockroach management in a restaurant, which of the following strategies
exemplifies the principle of 'suppression' rather than 'eradication'?
A) Sealing all cracks and crevices to prevent cockroach entry and harborage.
B) Applying a gel bait in targeted locations to reduce the population to a tolerable level.
C) Using a total-release fogger to kill all cockroaches in the building at once.
D) Implementing a strict sanitation schedule to remove food and water sources.
Answer: B
Rationale: Suppression aims to reduce pest populations to acceptable levels, not eliminate them entirely. Option B,
using gel baits to reduce cockroach numbers to a tolerable level, is a suppression tactic. Option A (exclusion) and D
(sanitation) are preventive measures. Option C (fogging) aims for eradication, which is often impractical and not
sustainable in IPM.
14 A vineyard implements an IPM program where pheromone traps are used to monitor grape berry moth
populations. The trapping data over two weeks shows a consistent catch of 5 moths per trap per week, and the
economic threshold is 10 moths per trap per week. The grower notices an increase in parasitic wasp activity.
According to IPM principles, what is the most appropriate action?
A) Apply a broad-spectrum insecticide immediately to prevent any potential crop loss.
B) Apply a selective insecticide that targets moth larvae while sparing wasps.
C) Continue monitoring and rely on natural biological control, as pest levels are below threshold and natural
enemies are present.
D) Increase the number of pheromone traps to disrupt mating and reduce pest populations.
Answer: C
Rationale: With pest levels below the economic threshold and natural enemy activity increasing, IPM principles
support continued monitoring and reliance on biological control. Option A is unnecessary and could harm
beneficial wasps. Option B, while selective, is still not justified when pest levels are below threshold. Option D,
mating disruption using pheromones, is a valid tactic but not needed at current pest levels and would be an
unnecessary expense.
