NEVADA AGRICULTURAL GROUND PEST CONTROL
APPLICATOR CATEGORY B1 EXAM — AGRICULTURE
PLANT PESTS QUESTIONS AND CORRECT ANSWERS WITH
RATIONALES.PDF
Nevada Agricultural Ground Pest Control Applicator — B1
Agriculture Plant Pests
100-Question Practice Examination with Correct Answers and Rationales
Exam description:
This comprehensive practice examination is designed for applicants preparing for the Nevada
Agricultural Ground Pest Control Applicator Category B1 — Agriculture Plant Pests
examination. It emphasizes agricultural plant-pest identification, pest biology, integrated pest
management, pesticide selection, application principles, crop protection, plant diseases,
nematodes, environmental considerations, resistance management, and field decision-making.
The Nevada Department of Agriculture identifies B1 as the agricultural-ground category for
plant pests and provides agricultural-ground study materials for certification preparation.
Table of Contents
Section Topic Questions
Section 1 Pest Identification and Diagnosis Q1–Q10
Section 2 Insect and Arthropod Biology Q11–Q20
Section 3 Plant Diseases and Pathogens Q21–Q30
Section 4 Plant-Parasitic Nematodes Q31–Q40
Section 5 Integrated Pest Management and Monitoring Q41–Q50
Section 6 Pesticide Selection, Formulations, and Modes of Action Q51–Q60
Section 7 Application Techniques and Equipment Q61–Q70
Section 8 Crop Protection and Field Scenarios Q71–Q80
Section 9 Environmental Protection and Non-Target Effects Q81–Q90
Section 10 Resistance Management and Advanced Decision-Making Q91–Q100
,Section 1 — Pest Identification and Diagnosis
Questions 1–10
Question 1 — Basic
Which observation is most important before selecting a pesticide for an agricultural plant-pest
problem?
A. The color of the pesticide container
B. Correct identification of the pest and cause of damage
C. The brand name of the most recently purchased pesticide
D. The number of pesticide applications made the previous year
Correct answer: B
Rationale: Correct pest identification is the foundation of an effective pest-management decision
because different pests require different control strategies. The main distractor, D, is insufficient
because previous applications do not establish what pest is currently causing the damage.
Question 2 — Basic
Which symptom is most characteristic of insect feeding rather than a plant nutritional
deficiency?
A. Uniform yellowing throughout an entire field
B. Discrete holes, mines, or feeding scars on plant tissue
C. Uniform reduction in plant height across the field
D. General chlorosis associated with poor soil fertility
Correct answer: B
Rationale: Insect feeding commonly produces localized damage such as holes, mines, stippling,
or chewing scars. The main distractor, D, describes a generalized condition more consistent with
a nutrient or physiological problem.
Question 3 — Basic
Which type of organism causes powdery mildew?
A. Fungus
B. Nematode
,C. Bacterium
D. Insect
Correct answer: A
Rationale: Powdery mildew is caused by fungi that produce characteristic superficial fungal
growth on plant surfaces. The main distractor, C, is incorrect because bacteria can cause plant
diseases but do not cause powdery mildew.
Question 4 — Application
A crop has distorted leaves, reduced vigor, and clusters of small insects on the undersides of
leaves. Before recommending treatment, what should the applicator do first?
A. Increase the pesticide rate to compensate for uncertainty
B. Identify the insects and determine whether they are actually responsible for the symptoms
C. Apply a broad-spectrum insecticide immediately
D. Treat the entire field regardless of pest distribution
Correct answer: B
Rationale: Identification should precede treatment so that the applicator can determine whether
the pest is causal and select an appropriate management method. The main distractor, C, is
inappropriate because unnecessary broad-spectrum treatment can increase cost and harm
beneficial organisms.
Question 5 — Application
A field contains plants with wilted foliage, but the soil is adequately moist. Some plants have
discolored vascular tissue when stems are cut. Which conclusion is most appropriate?
A. The symptoms prove the plants are suffering from insect feeding
B. A vascular disease should be considered and investigated
C. The symptoms prove the field requires a miticide
D. The plants should automatically receive additional irrigation
Correct answer: B
Rationale: Wilt accompanied by vascular discoloration can indicate a pathogen affecting the
plant's vascular system and warrants diagnostic investigation. The main distractor, D, is
inappropriate because additional irrigation may worsen some disease conditions rather than
correct them.
, Question 6 — Application
An applicator finds chewing damage but no insects on the plants. What is the most appropriate
next step?
A. Assume the pest has already been eliminated
B. Examine the plants, soil surface, nearby vegetation, and field margins for the pest or evidence
of its activity
C. Apply an insecticide immediately without further investigation
D. Assume the damage is caused by a disease
Correct answer: B
Rationale: Pests may feed at night, move away from damaged plants, or occupy other portions
of the plant or field. The main distractor, C, skips diagnosis and may result in unnecessary or
ineffective pesticide use.
Question 7 — Application
A grower reports that an insecticide "failed," but inspection shows that the insects present are a
species not listed on the product label. What is the most likely explanation?
A. The product necessarily became contaminated
B. The pesticide was not selected for the identified pest
C. The crop automatically developed resistance
D. The application equipment must have been calibrated incorrectly
Correct answer: B
Rationale: A pesticide may not provide control when the target pest is outside its labeled use or
biological effectiveness. The main distractor, C, is premature because resistance should not be
diagnosed simply from one unsuccessful treatment against an incorrectly targeted pest.
Question 8 — Application
A crop shows circular patches of stunted plants rather than uniform damage across the field.
What information would be most useful in diagnosing the problem?
A. Whether the affected areas correspond to soil, drainage, irrigation, or pest-distribution
patterns
B. The color of the applicator's equipment
C. The pesticide brand used at a different farm
D. The crop's market price
APPLICATOR CATEGORY B1 EXAM — AGRICULTURE
PLANT PESTS QUESTIONS AND CORRECT ANSWERS WITH
RATIONALES.PDF
Nevada Agricultural Ground Pest Control Applicator — B1
Agriculture Plant Pests
100-Question Practice Examination with Correct Answers and Rationales
Exam description:
This comprehensive practice examination is designed for applicants preparing for the Nevada
Agricultural Ground Pest Control Applicator Category B1 — Agriculture Plant Pests
examination. It emphasizes agricultural plant-pest identification, pest biology, integrated pest
management, pesticide selection, application principles, crop protection, plant diseases,
nematodes, environmental considerations, resistance management, and field decision-making.
The Nevada Department of Agriculture identifies B1 as the agricultural-ground category for
plant pests and provides agricultural-ground study materials for certification preparation.
Table of Contents
Section Topic Questions
Section 1 Pest Identification and Diagnosis Q1–Q10
Section 2 Insect and Arthropod Biology Q11–Q20
Section 3 Plant Diseases and Pathogens Q21–Q30
Section 4 Plant-Parasitic Nematodes Q31–Q40
Section 5 Integrated Pest Management and Monitoring Q41–Q50
Section 6 Pesticide Selection, Formulations, and Modes of Action Q51–Q60
Section 7 Application Techniques and Equipment Q61–Q70
Section 8 Crop Protection and Field Scenarios Q71–Q80
Section 9 Environmental Protection and Non-Target Effects Q81–Q90
Section 10 Resistance Management and Advanced Decision-Making Q91–Q100
,Section 1 — Pest Identification and Diagnosis
Questions 1–10
Question 1 — Basic
Which observation is most important before selecting a pesticide for an agricultural plant-pest
problem?
A. The color of the pesticide container
B. Correct identification of the pest and cause of damage
C. The brand name of the most recently purchased pesticide
D. The number of pesticide applications made the previous year
Correct answer: B
Rationale: Correct pest identification is the foundation of an effective pest-management decision
because different pests require different control strategies. The main distractor, D, is insufficient
because previous applications do not establish what pest is currently causing the damage.
Question 2 — Basic
Which symptom is most characteristic of insect feeding rather than a plant nutritional
deficiency?
A. Uniform yellowing throughout an entire field
B. Discrete holes, mines, or feeding scars on plant tissue
C. Uniform reduction in plant height across the field
D. General chlorosis associated with poor soil fertility
Correct answer: B
Rationale: Insect feeding commonly produces localized damage such as holes, mines, stippling,
or chewing scars. The main distractor, D, describes a generalized condition more consistent with
a nutrient or physiological problem.
Question 3 — Basic
Which type of organism causes powdery mildew?
A. Fungus
B. Nematode
,C. Bacterium
D. Insect
Correct answer: A
Rationale: Powdery mildew is caused by fungi that produce characteristic superficial fungal
growth on plant surfaces. The main distractor, C, is incorrect because bacteria can cause plant
diseases but do not cause powdery mildew.
Question 4 — Application
A crop has distorted leaves, reduced vigor, and clusters of small insects on the undersides of
leaves. Before recommending treatment, what should the applicator do first?
A. Increase the pesticide rate to compensate for uncertainty
B. Identify the insects and determine whether they are actually responsible for the symptoms
C. Apply a broad-spectrum insecticide immediately
D. Treat the entire field regardless of pest distribution
Correct answer: B
Rationale: Identification should precede treatment so that the applicator can determine whether
the pest is causal and select an appropriate management method. The main distractor, C, is
inappropriate because unnecessary broad-spectrum treatment can increase cost and harm
beneficial organisms.
Question 5 — Application
A field contains plants with wilted foliage, but the soil is adequately moist. Some plants have
discolored vascular tissue when stems are cut. Which conclusion is most appropriate?
A. The symptoms prove the plants are suffering from insect feeding
B. A vascular disease should be considered and investigated
C. The symptoms prove the field requires a miticide
D. The plants should automatically receive additional irrigation
Correct answer: B
Rationale: Wilt accompanied by vascular discoloration can indicate a pathogen affecting the
plant's vascular system and warrants diagnostic investigation. The main distractor, D, is
inappropriate because additional irrigation may worsen some disease conditions rather than
correct them.
, Question 6 — Application
An applicator finds chewing damage but no insects on the plants. What is the most appropriate
next step?
A. Assume the pest has already been eliminated
B. Examine the plants, soil surface, nearby vegetation, and field margins for the pest or evidence
of its activity
C. Apply an insecticide immediately without further investigation
D. Assume the damage is caused by a disease
Correct answer: B
Rationale: Pests may feed at night, move away from damaged plants, or occupy other portions
of the plant or field. The main distractor, C, skips diagnosis and may result in unnecessary or
ineffective pesticide use.
Question 7 — Application
A grower reports that an insecticide "failed," but inspection shows that the insects present are a
species not listed on the product label. What is the most likely explanation?
A. The product necessarily became contaminated
B. The pesticide was not selected for the identified pest
C. The crop automatically developed resistance
D. The application equipment must have been calibrated incorrectly
Correct answer: B
Rationale: A pesticide may not provide control when the target pest is outside its labeled use or
biological effectiveness. The main distractor, C, is premature because resistance should not be
diagnosed simply from one unsuccessful treatment against an incorrectly targeted pest.
Question 8 — Application
A crop shows circular patches of stunted plants rather than uniform damage across the field.
What information would be most useful in diagnosing the problem?
A. Whether the affected areas correspond to soil, drainage, irrigation, or pest-distribution
patterns
B. The color of the applicator's equipment
C. The pesticide brand used at a different farm
D. The crop's market price
