Free 2026 PSEP Private Applicator Pesticide Safety Initial Certification Practice Questions

Sample Practice Questions

Try these 10 sample questions from the 2026 PSEP Private Applicator Pesticide Safety Initial Certification practice bank. Each includes the answer and explanation. Continue with the interactive practice above to review the full question set.

1. 1A crop is not listed as an application site on a pesticide label. What should the applicator do?

   1. A. Apply at half rate
   2. B. Apply only before flowering
   3. C. Do not apply the pesticide to that crop
   4. D. Apply if the pest is listed elsewhere on the label

   Answer: C

   Explanation: The manual states, Do not apply a pesticide to any site not listed on the label. Listing the pest does not authorize an unlisted site. Quote: “which you may legally use the pesticide.”

   Reference: National Pesticide Applicator Certification Core Manual — Chapter 3, Directions for Use

2. 2For which activity does Tennessee require Private Applicator certification?

   1. A. A private restricted-use pesticide application to produce an agricultural commodity
   2. B. A general-use pesticide application to a home garden
   3. C. A fertilizer application to a commercial lawn
   4. D. A pesticide recommendation with no application or supervision

   Answer: A

   Explanation: The rule requires certification for a person who makes or directly supervises a private, restricted use pesticide application for production of an agricultural commodity. Choice A matches every condition. Quote: “Private Applicator certification is required for any person who makes or authorizes by direct supervision a private, restricted use pesticide application for production of an agricultural commodity.”

   Reference: Tn Rule 0080 09 02 — Rule 0080-09-02-.04(1)(q)

3. 3Before treating a new site, which nearby feature must the site survey identify to prevent off-target harm?

   1. A. A competing target-pest species
   2. B. Sensitive areas and nontarget organisms
   3. C. A different pesticide formulation
   4. D. An alternate application method

   Answer: B

   Explanation: The manual directs applicators to assess the site and identify sensitive areas. Nearby water, people, animals, and susceptible plants can change how an application must be made. Quote: “sensitive areas that could be harmed by pesticides.”

   Reference: National Pesticide Applicator Certification Core Manual — Chapter 9, Selecting the Treatment Area

4. 4Which pesticide-label section determines whether an intended crop or site is a legal use?

   1. A. Directions for Use
   2. B. Precautionary Statements
   3. C. First Aid
   4. D. Storage and Disposal

   Answer: A

   Explanation: The manual says, Use the pesticide only on sites listed in the directions for use. The intended harvested use must be authorized by the label. Quote: “various crops, animals, or sites on”

   Reference: National Pesticide Applicator Certification Core Manual — Chapter 3, Directions for Use

5. 5A treated field borders a pond; which site-specific risk must the applicator address?

   1. A. Surface-water contamination
   2. B. Indoor vapor accumulation
   3. C. Pollinator exposure at bloom
   4. D. Livestock entry into a treated area

   Answer: A

   Explanation: All four are real site-specific risks, but the bordering pond directly presents a surface-water contamination concern. Federal standards require instructions covering conditions at the actual use site. Quote: “These instructions must include labeling directions, precautions, and requirements applicable to the specific use and site.”

   Reference: eCFR :: 40 CFR 171.201 -- Requirements for direct supervision of noncertified applicators by certified applicators. — 40 CFR 171.201(b)(3)(iii)

6. 6Where on an agricultural pesticide label is the restricted-entry interval normally found?

   1. A. Agricultural Use Requirements
   2. B. Warranty disclaimer
   3. C. Net contents
   4. D. Company address

   Answer: A

   Explanation: The manual states that the REI appears in the Agricultural Use Requirements section of the labeling. Quote: “Agricultural Use Requirements”

   Reference: National Pesticide Applicator Certification Core Manual — Chapter 3, Agricultural Use Requirements

7. 7Which pest-management step must come before selecting a control method?

   1. A. Accurately identify the pest
   2. B. Implement the selected control
   3. C. Evaluate the control result
   4. D. Record the completed treatment

   Answer: A

   Explanation: The manual states that the first step in solving a pest problem is identifying the pest. Control selection, implementation, evaluation, and recording follow identification. Quote: “is to accurately identify the pest.”

   Reference: National Pesticide Applicator Certification Core Manual — Chapter 1, Pest Identification

8. 8What does the signal word on a pesticide label primarily communicate?

   1. A. Relative acute toxicity
   2. B. Chronic toxicity classification
   3. C. Environmental persistence
   4. D. Frequency of handler exposure

   Answer: A

   Explanation: All four concepts affect pesticide risk, but the signal word specifically indicates the product's relative acute toxicity to humans and animals. Quote: “the relative acute”

   Reference: National Pesticide Applicator Certification Core Manual — Chapter 3, Signal Words

9. 9Which set contains the four broad pest groups used in the core manual?

   1. A. Annuals, biennials, perennials, and volunteers
   2. B. Producers, consumers, scavengers, and decomposers
   3. C. Native, introduced, invasive, and protected species
   4. D. Weeds, invertebrates, pathogens, and vertebrates

   Answer: D

   Explanation: The manual organizes pests into weeds, invertebrates, pathogens, and vertebrates. Quote: “State the four main groups of pests and give an”

   Reference: National Pesticide Applicator Certification Core Manual — Chapter 1, Pest Identification

10. 10Which process carries pesticide downward through soil toward groundwater?

    1. A. Runoff
    2. B. Volatilization
    3. C. Leaching
    4. D. Spray drift

    Answer: C

    Explanation: The manual defines leaching as the movement of pesticides through the soil. Quote: “LEACHING The movement through soil of a” and “pesticide or other chemical that is dissolved in”

    Reference: National Pesticide Applicator Certification Core Manual — Chapter 7, Groundwater and Leaching