I85PREP
⌘ K
CA Pesticide Applicator study materials
CA Pesticide Applicator study resources

CA Pesticide Applicator practice questions

One question at a time. Build your CA Pesticide Applicator understanding.

First 50 of 200 questions. Each one lists the choices, the correct answer, and an explanation. The checker at the top of this page saves progress in this browser when it is available.

Continue in the practice tool above to load more questions, 50 at a time.

Question 1California pesticide laws, regulations, licensing, and enforcement

Which California agency has primary statewide responsibility for registering pesticides and issuing Pest Control Adviser licenses?

  1. County agricultural commissioner
  2. Department of Pesticide Regulation Correct answer.
  3. Division of Occupational Safety and Health
  4. Structural Pest Control Board

Explanation

The Department of Pesticide Regulation, part of the California Environmental Protection Agency, registers pesticides for sale and use in California and issues PCA, QAL, and QAC licenses. County agricultural commissioners carry out local enforcement and issue private applicator certificates.

Question 2California pesticide laws, regulations, licensing, and enforcement

Who is primarily responsible for enforcing California pesticide use laws and regulations at the county level?

  1. The county sheriff
  2. The county health officer
  3. The county agricultural commissioner Correct answer.
  4. The local Air Quality Management District

Explanation

California law makes the county agricultural commissioner the primary local enforcement officer for pesticide use laws and regulations. Commissioners inspect sites and records, issue permits, and may initiate civil penalty actions, subject to DPR oversight.

Question 3California pesticide laws, regulations, licensing, and enforcement

Before applying a California restricted material to a production agricultural crop, a grower generally must obtain what?

  1. A restricted material permit Correct answer.
  2. A Section 18 emergency exemption
  3. A physician's written recommendation
  4. A federal applicator certification

Explanation

California restricted materials may be used only under a permit issued by the county agricultural commissioner, which can specify the pesticide, site, pest, and conditions of use. A private applicator certificate may also be required, but the restricted material permit is the authorization for the specific use.

Question 4California pesticide laws, regulations, licensing, and enforcement

A pesticide is registered by EPA but not by DPR. What is its legal status for sale and use in California?

  1. It is not legal until DPR registers it or an exemption applies. Correct answer.
  2. It may be used only by a licensed PCA.
  3. It is legal because EPA registration preempts state law.
  4. It may be sold only if the label lists a California address.

Explanation

FIFRA permits states to impose additional registration requirements, and California requires DPR registration before a pesticide may be sold or used in the state. EPA registration alone does not authorize California sales or use, although valid emergency or experimental exemptions can apply.

Question 5California pesticide laws, regulations, licensing, and enforcement

Which official issues a private applicator certificate to a California farmer?

  1. The Director of DPR
  2. The EPA Administrator
  3. The county agricultural commissioner Correct answer.
  4. The local agricultural pest control board

Explanation

Private applicator certificates are issued through the county agricultural commissioner after the applicant passes the required examination. DPR issues the commercial and adviser licenses, such as QAL, QAC, and PCA.

Question 6California pesticide laws, regulations, licensing, and enforcement

A California Pest Control Adviser must complete how many hours of DPR-approved continuing education during each two-year license cycle?

  1. 8 hours
  2. 80 hours
  3. 40 hours Correct answer.
  4. 20 hours

Explanation

A California PCA must complete 40 hours of DPR-approved continuing education during each two-year license cycle. The requirement includes a laws-and-regulations component and must be documented at renewal.

Question 7California pesticide laws, regulations, licensing, and enforcement

A Qualified Applicator License holder must complete how many continuing education hours per two-year license cycle?

  1. 40 hours
  2. 8 hours
  3. 20 hours Correct answer.
  4. 4 hours

Explanation

QAL and QAC licensees must complete 20 hours of approved continuing education every two years to renew. This is half the PCA requirement, reflecting the different scope of the licenses.

Question 8California pesticide laws, regulations, licensing, and enforcement

In California, agricultural pesticide use must be reported to which entity and on what schedule?

  1. DPR, annually
  2. EPA, quarterly
  3. County agricultural commissioner, monthly Correct answer.
  4. Cal/OSHA, before each application

Explanation

California requires agricultural pesticide use to be reported monthly to the county agricultural commissioner on pesticide use reports. DPR uses the data for enforcement, exposure assessment, and regulatory decisions.

Question 9California pesticide laws, regulations, licensing, and enforcement

What is the main purpose of the operator identification number issued by a county agricultural commissioner?

  1. To certify that the grower passed an applicator exam
  2. To replace a private applicator certificate
  3. To identify the operation for permits and reporting Correct answer.
  4. To authorize retail pesticide sales

Explanation

The operator identification number links a grower's pesticide use reports and restricted material permits to a specific farming operation. It is an identification tool, not an applicator license or a retail sales authorization.

Question 10California pesticide laws, regulations, licensing, and enforcement

How often must California employers provide pesticide safety training to fieldworkers?

  1. At least once every five years
  2. Only once at initial hire
  3. At least once every three years
  4. At least once every 12 months Correct answer.

Explanation

California requires fieldworker pesticide safety training at least once every 12 months, before the worker enters a treated field. This state requirement is more frequent than the federal five-year training interval.

Question 11California pesticide laws, regulations, licensing, and enforcement

A pesticide label specifies a 48-hour restricted entry interval. When does the REI expire for purposes of worker entry?

  1. Immediately after the spray dries
  2. 24 hours after application begins
  3. 48 hours after the application is completed Correct answer.
  4. When the commissioner issues a release

Explanation

The restricted entry interval begins when the application is completed and runs for the period stated on the label. Workers may not enter the treated area during the REI except under the limited exceptions allowed by law.

Question 12California pesticide laws, regulations, licensing, and enforcement

How long must a California licensed agricultural pesticide applicator retain application records?

  1. 2 years Correct answer.
  2. 5 years
  3. 6 months
  4. 1 year

Explanation

California applicators must retain required pesticide application records for at least two years. The records must include information such as the date, site, pesticide, rate, and applicator.

Question 13California pesticide laws, regulations, licensing, and enforcement

A county agricultural commissioner finds an unregistered pesticide offered for sale. Which action is authorized to stop its sale?

  1. Issue a stop-sale order Correct answer.
  2. Issue a PCA license
  3. Register the product with EPA
  4. Grant a Section 18 exemption

Explanation

A stop-sale order can prohibit the further sale or distribution of a pesticide that is unregistered, mislabeled, or otherwise noncompliant. County agricultural commissioners and DPR have authority to use such orders to protect the public.

Question 14California pesticide laws, regulations, licensing, and enforcement

Under FIFRA Section 24(c), what authority does California DPR have?

  1. Register a special local need use Correct answer.
  2. Waive label requirements
  3. Set national tolerances
  4. Grant emergency exemptions

Explanation

FIFRA Section 24(c) allows a state to register an additional use of a federally registered pesticide to address a special local need. In California, DPR administers this special local need registration process.

Question 15California pesticide laws, regulations, licensing, and enforcement

Which mechanism authorizes emergency use of an unregistered pesticide for a pest outbreak?

  1. Section 24(c) special local need registration
  2. County restricted material permit
  3. Experimental use permit
  4. Section 18 emergency exemption Correct answer.

Explanation

A Section 18 emergency exemption from EPA allows use of a pesticide for an unregistered purpose during a declared emergency, such as an outbreak with no practical alternative. DPR may request the exemption and set state conditions.

Question 16California pesticide laws, regulations, licensing, and enforcement

A PCA recommends a pesticide application at a rate higher than the label allows. What is the legal status of that recommendation?

  1. It is allowed with prior approval from the county agricultural commissioner.
  2. It is illegal because recommendations must match the registered label. Correct answer.
  3. It is allowed if the PCA documents the pest pressure.
  4. It is allowed only for research plots.

Explanation

The registered label is legally enforceable, and a PCA's recommendation must be consistent with it. Recommending a higher-than-labeled rate is an off-label use and can lead to enforcement action against the adviser and applicator.

Question 17California pesticide laws, regulations, licensing, and enforcement

What must a person obtain to conduct a field trial in California with a pesticide that is not registered for that use?

  1. A pesticide dealer license
  2. A county business license only
  3. A private applicator certificate
  4. An experimental use permit Correct answer.

Explanation

Field trials with an unregistered pesticide or an unregistered use generally require an experimental use permit. The permit sets the plot size, crop, pesticide, and reporting conditions under which the trial may proceed.

Question 18California pesticide laws, regulations, licensing, and enforcement

Which statement best describes the scope of a California private applicator certificate?

  1. Commercial application for hire on any farm
  2. Pesticide recommendations to other growers
  3. Use on the holder's or employer's property Correct answer.
  4. Retail sales of restricted materials

Explanation

A private applicator certificate is limited to applying restricted materials on land owned or rented by the holder or the holder's employer. It does not authorize commercial application for hire or pesticide recommendations to others.

Question 19California pesticide laws, regulations, licensing, and enforcement

Before selling a restricted material to a grower, a California pesticide dealer should verify what?

  1. Crop insurance
  2. A valid restricted material permit Correct answer.
  3. Federal WPS training
  4. A PCA license

Explanation

Dealers may sell restricted materials only to persons authorized to use them, so they must check for a valid restricted material permit or other acceptable authorization. Selling to an unauthorized buyer can result in enforcement action against the dealer.

Question 20California pesticide laws, regulations, licensing, and enforcement

A person without a license applies a restricted pesticide for hire on a farm. What violation has occurred?

  1. Only a minor label violation
  2. Unlicensed application and business activity Correct answer.
  3. No violation if the grower supervised
  4. Only a recordkeeping violation

Explanation

Applying a restricted material for hire requires the appropriate applicator license and, for a business, the required pest control business registration or license. Doing so without authorization violates both the licensing and pesticide use provisions.

Question 21California pesticide laws, regulations, licensing, and enforcement

In California, a restricted material is best defined as which of the following?

  1. A pesticide registered only for structural use
  2. Any pesticide sold in a concentrated formulation
  3. A pesticide that requires a use permit Correct answer.
  4. Any pesticide labeled as organic

Explanation

California designates certain pesticides as restricted materials because of hazards such as acute toxicity, groundwater contamination potential, or air quality concerns. These materials may be used only under a permit that imposes site-specific conditions.

Question 22California pesticide laws, regulations, licensing, and enforcement

A California Qualified Applicator License is issued for what term before renewal is required?

  1. Five years
  2. Two years Correct answer.
  3. Three years
  4. One year

Explanation

A California QAL is valid for two years and must be renewed with the required continuing education. The same two-year cycle applies to QACs and PCAs.

Question 23California pesticide laws, regulations, licensing, and enforcement

A county agricultural commissioner wants to review a grower's pesticide application records. What is the grower's obligation?

  1. Only restricted material records must be shown
  2. Records may be withheld without a warrant
  3. Only EPA may review the records
  4. Make required records available for inspection Correct answer.

Explanation

Required pesticide records must be made available to the county agricultural commissioner and DPR for inspection. The authority supports enforcement, use investigations, and verification of permit compliance.

Question 24California pesticide laws, regulations, licensing, and enforcement

A grower wants to apply a registered pesticide to a crop that is not listed on the label. What is required for the use to be legal?

  1. Application at half the labeled rate
  2. A PCA's verbal recommendation
  3. A supplemental label or 24(c) registration Correct answer.
  4. A commissioner's label waiver

Explanation

A pesticide may be applied only to sites and crops allowed by the label or by a valid supplemental label, 24(c) registration, or other authorization. A PCA recommendation, reduced rate, or commissioner waiver cannot create an off-label use.

Question 25California pesticide laws, regulations, licensing, and enforcement

Which administrative action can DPR take against a licensee who violates California pesticide laws?

  1. Suspend or revoke the license Correct answer.
  2. Register the licensee's pesticide with EPA
  3. Transfer the case to the Structural Pest Control Board
  4. Impose criminal jail time

Explanation

DPR may suspend or revoke a license or certificate after administrative review of serious pesticide law violations. Criminal penalties are handled through the courts, not imposed administratively by DPR.

Question 26California pesticide laws, regulations, licensing, and enforcement

Which California state agency must register a pesticide before the product may be sold or used in the state?

  1. California Department of Food and Agriculture
  2. California Environmental Protection Agency
  3. Structural Pest Control Board
  4. Department of Pesticide Regulation Correct answer.

Explanation

The California Department of Pesticide Regulation is the state agency that registers pesticide products for sale and use in California. Federal EPA registration alone does not authorize California sales; the product must also carry DPR registration and a California label.

Question 27California pesticide laws, regulations, licensing, and enforcement

Before a grower may use a restricted material, what must the grower obtain from the county agricultural commissioner?

  1. A private applicator certificate
  2. A restricted material permit Correct answer.
  3. A field trial permit
  4. A pesticide dealer license

Explanation

A restricted material permit is issued by the county agricultural commissioner and sets the conditions under which the material may be used. A grower must have the permit before acquiring or using the restricted material.

Question 28California pesticide laws, regulations, licensing, and enforcement

Which credential is required for a business to sell restricted materials in California?

  1. Private Applicator Certificate
  2. Pesticide dealer license Correct answer.
  3. Pest Control Adviser license
  4. Qualified Applicator License

Explanation

Selling restricted materials requires a pesticide dealer license issued through DPR. Applicator, adviser, and private applicator credentials authorize pest management activities, not the sale of restricted materials.

Question 29California pesticide laws, regulations, licensing, and enforcement

A company wants to apply pesticides for hire to agricultural crops. Which license must the company obtain from DPR?

  1. Structural pest control license
  2. Private applicator certificate
  3. Pest control business license Correct answer.
  4. Pesticide dealer license

Explanation

A business that applies pesticides for hire must hold a pest control business license issued by DPR. The license is separate from the individual applicator credential held by employees who make applications.

Question 30California pesticide laws, regulations, licensing, and enforcement

Which credential authorizes a person to supervise pesticide applications made for hire?

  1. Private applicator certificate
  2. Fieldworker certificate
  3. Pesticide dealer license
  4. Qualified Applicator License Correct answer.

Explanation

A Qualified Applicator License authorizes the holder to supervise pesticide applications made for hire. A private applicator certificate is limited to the applicator's own or rented property, and a dealer license covers sales.

Question 31California pesticide laws, regulations, licensing, and enforcement

A county agricultural commissioner determines that a licensed applicator violated a pesticide regulation. Which action is within the commissioner's authority?

  1. Amend the label
  2. Issue a citation Correct answer.
  3. Revoke federal registration
  4. Approve state registration

Explanation

County agricultural commissioners enforce pesticide laws locally and may issue citations for violations. Civil penalties may be assessed through that citation process; federal registration and label changes are handled at the EPA and DPR levels.

Question 32California pesticide laws, regulations, licensing, and enforcement

What does the California registration number on a pesticide label indicate?

  1. It is registered by DPR for California sale and use Correct answer.
  2. It is exempt from federal registration requirements
  3. Its federal registration has expired and is no longer valid
  4. It is classified as a restricted material by the county

Explanation

The California registration number shows that DPR has registered the product for sale and use in the state. It is distinct from the EPA registration number and does not by itself indicate restricted material status.

Question 33California pesticide laws, regulations, licensing, and enforcement

A California Pest Control Adviser license authorizes which activity?

  1. Applying restricted materials without an applicator license
  2. Selling restricted materials to licensed growers
  3. Supervising fieldworker safety training sessions
  4. Recommending pest management practices, including pesticide use Correct answer.

Explanation

A Pest Control Adviser license authorizes the holder to recommend pest management practices, including pesticide products and use rates, for agricultural clients. Applying pesticides for hire or selling restricted materials requires a separate license.

Question 34California pesticide laws, regulations, licensing, and enforcement

A grower's restricted material permit prohibits aerial application, but the pesticide label allows it. Which rule applies?

  1. The grower may apply aerially if the CAC is notified afterward
  2. Either rule may be followed at the grower's choice
  3. The permit condition controls as the stricter rule Correct answer.
  4. The label controls because federal law preempts permits

Explanation

Permit conditions issued by the county agricultural commissioner can be more restrictive than the pesticide label. When a permit condition conflicts with a label allowance, the grower must follow the stricter permit requirement.

Question 35California pesticide laws, regulations, licensing, and enforcement

A pesticide bears an EPA registration number but has no California registration. What is its legal status for sale or use in California?

  1. It may be used only by a private applicator
  2. It may not be sold or used without DPR registration Correct answer.
  3. It may be sold only by a licensed pesticide dealer
  4. It may be sold if the label is in English

Explanation

California requires a pesticide to be registered by DPR before it may be sold or used in the state. An EPA registration number alone does not satisfy that requirement, even if the product is otherwise legal federally.

Question 36California pesticide laws, regulations, licensing, and enforcement

A grower's restricted material permit specifies ground application, but the grower wants to apply by air. What must the grower do before applying?

  1. File a pesticide use report before applying
  2. Notify the pesticide dealer after the application
  3. Obtain a modified permit from the commissioner Correct answer.
  4. Have the PCA sign the pesticide label

Explanation

Restricted material permit terms are enforceable conditions, and a grower cannot change the application method without approval. The grower must obtain a modified permit from the county agricultural commissioner before making the aerial application.

Question 37Pesticide labels and labeling comprehension

The percentage of each active ingredient in a pesticide product appears in which section of the label?

  1. Ingredient statement Correct answer.
  2. Directions for use
  3. Precautionary statements
  4. Storage and disposal

Explanation

The ingredient statement lists each active ingredient by common name and percentage and states the total percentage of inert ingredients. It is required on the front panel together with the product name and net contents so the user knows exactly what is in the container.

Question 38Pesticide labels and labeling comprehension

EPA regulations require most pesticide labels to carry which statement as the child hazard warning?

  1. Do not apply near schools or playgrounds
  2. Keep out of reach of children Correct answer.
  3. Not for use by pregnant women
  4. Store away from children under six years old

Explanation

The child hazard warning must read exactly "Keep Out of Reach of Children" and appears on most pesticide labels, with narrow exceptions such as manufacturing-use products. The wording is standardized so that it is recognized instantly by consumers.

Question 39Pesticide labels and labeling comprehension

The EPA Registration Number printed on a pesticide label serves primarily to:

  1. show the date on which the registration expires
  2. identify the specific product and label approved for that use Correct answer.
  3. identify the facility where the product was manufactured
  4. list the concentration of the active ingredient

Explanation

The registration number ties the container to a specific registered product and its approved label, which is how enforcement and residue tolerances are matched to the product. The plant where it was made is identified by a separate establishment number.

Question 40Pesticide labels and labeling comprehension

A grower wants to know which crops and pests a product may legally be used on. Which label section provides that information?

  1. Statement of practical treatment
  2. Directions for use Correct answer.
  3. Precautionary statements
  4. Ingredient statement

Explanation

The directions for use list the labeled sites, target pests, application rates, timing, and use restrictions for the product. Applying to a site or pest that is not covered there is a use inconsistent with the label and is unlawful.

Question 41Pesticide labels and labeling comprehension

A label for a fungicide states: "Do not apply within 14 days of harvest." What is this restriction called?

  1. The reapplication interval
  2. The restricted-entry interval
  3. The preharvest interval Correct answer.
  4. The plant-back restriction

Explanation

The preharvest interval is the minimum time allowed between the last application and harvest, and it exists to keep residues in the harvested commodity within the established tolerance. It is listed in the directions for use and can differ by crop.

Question 42Pesticide labels and labeling comprehension

An applicator splashes pesticide concentrate into an eye. Which label section gives the immediate steps to take?

  1. Storage and disposal
  2. Statement of practical treatment Correct answer.
  3. Environmental hazards
  4. Directions for use

Explanation

The statement of practical treatment, sometimes called the first aid section, lists the emergency actions for each route of exposure and may include a note to physicians. Reading it before an incident is part of routine label review.

Question 43Pesticide labels and labeling comprehension

A label displays the signal word DANGER together with a skull and crossbones. What does this combination indicate?

  1. The product is corrosive but not acutely toxic
  2. The product is highly toxic by at least one route of exposure Correct answer.
  3. The product is exempt from personal protective equipment requirements
  4. The product is a soil fumigant

Explanation

DANGER plus the word POISON and the skull and crossbones identifies a Toxicity Category I product that is highly toxic by the oral, dermal, or inhalation route. DANGER without POISON is used for products that are corrosive but less acutely toxic.

Question 44Pesticide labels and labeling comprehension

Under federal law, a restricted-use pesticide may be applied by:

  1. any adult over the age of 18 who is working alone
  2. any person who has read the label directions for the product
  3. any employee of the property owner who has been shown the label
  4. a certified applicator or a person under direct supervision Correct answer.

Explanation

FIFRA limits the sale, distribution, and use of restricted-use pesticides to certified applicators and to persons acting under their direct supervision. The specific supervision standard depends on whether the certification is private or commercial and on state rules.

Question 45Pesticide labels and labeling comprehension

A state obtains a FIFRA Section 24(c) special local need registration in order to:

  1. allow an unregistered product to be sold during an emergency
  2. add a state-specific use that is not on the federal label Correct answer.
  3. suspend a federal registration nationwide
  4. change the national residue tolerance for a commodity

Explanation

Section 24(c) allows a state to register an additional use of a federally registered product to meet a special local need, and the state issues special local need labeling that the applicator must follow. Emergency situations are handled under Section 18 instead.

Question 46Pesticide labels and labeling comprehension

Section 18 of FIFRA authorizes EPA to:

  1. set worker protection standards for handlers
  2. revoke a state's applicator certification program
  3. exempt a specific use from registration during an emergency Correct answer.
  4. require a federal permit for all soil fumigation

Explanation

A Section 18 emergency exemption permits a limited, time-specific use of a pesticide for a situation that is not covered by the registered label when a serious pest problem exists and no registered alternative is available. The exemption names the site, the pest, and the period of use.

Question 47Pesticide labels and labeling comprehension

FIFRA's definition of "labeling" differs from "label" in that labeling includes:

  1. only the printed container label attached by the manufacturer
  2. only the safety data sheet supplied with the product
  3. the label plus any verbal instructions given by the dealer at the point of sale
  4. the label plus other written material that accompanies the product Correct answer.

Explanation

Labeling covers the container label and all other written, printed, or graphic material that accompanies the product or is referenced by the label, such as supplemental labels and brochures. A use that violates that material can be a violation of FIFRA.

Question 48Pesticide labels and labeling comprehension

The Agricultural Use Requirements box on a pesticide label is where an applicator finds:

  1. the maximum number of applications allowed per season
  2. the list of target pests the product controls
  3. the method for disposing of the empty container
  4. the REI and the PPE required for early entry Correct answer.

Explanation

The box summarizes Worker Protection Standard obligations for the product, including the restricted-entry interval and any personal protective equipment required for early entry, and it points the user to 40 CFR Part 170. Rate limits and target pests appear elsewhere on the label.

Question 49Pesticide labels and labeling comprehension

Under the Worker Protection Standard, which activity makes a person a "handler"?

  1. harvesting a crop that was treated a month earlier
  2. mixing or loading a pesticide or applying it Correct answer.
  3. scouting a field that has no recent application
  4. weeding a field after the REI has expired

Explanation

Handlers are the people who mix, load, apply, or otherwise handle pesticides or opened containers, and they receive more extensive WPS protections than field workers. Workers perform tasks in treated areas but do not handle the pesticide itself.

Question 50Pesticide labels and labeling comprehension

A label requires chemical-resistant gloves, but the employer wants to adopt a simpler glove policy. What is the correct standard?

  1. The employer's written policy controls because the employer is the one who is liable.
  2. The certified applicator may substitute any glove rated for the same hazard class.
  3. The county agricultural commissioner may waive glove requirements on request.
  4. Label requirements are a legal minimum; stricter employer rules may also apply. Correct answer.

Explanation

Label personal protective equipment requirements set the legal floor; working without them is a use inconsistent with the label and can be enforced as a violation. An employer may require more protection than the label but may never require less.