PESTICIDE APPLICATORS FINAL PAPER 2025/2026
QUESTIONS WITH ANSWERS MARKED A+
✔✔Inert ingredients - ✔✔All materials in the pesticide formulation other than the active
ingredient. Some may be toxic or hazardous to people
✔✔Labeling - ✔✔The pesticide label and all associated materials, including
supplemental labels, special local needs registration information, and manufacturer's
information. It is a legal document
✔✔Minimum risk pesticide - ✔✔EPA-exempted pesticide not requiring registration and
considered to pose minimum risk to humans and the environment, provided the
products satisfy certain conditions
✔✔Personal Protective equipment (PPE) - ✔✔Devices and garments that protect
handlers from exposure to pesticides. These include coveralls, eye protection, gloves,
boots, respirators, aprons and hats.
✔✔Registration number - ✔✔Numbers assigned to a pesticide product to identify that
the product has been approved by the U.S. EPA.
✔✔Restricted Entry Interval (REI) - ✔✔A period of time that must elapse between
application of a pesticide and when it is safe to allow people into the treated area
without requiring that they wear PPE and receive early-worker training
✔✔Restricted use pesticide - ✔✔A pesticide which, when applied in accordance with its
directions for use, warnings, and cautions and for uses for which it is registered or for
one or more such uses, or in accordance with a widespread and commonly recognized
practice, may generally cause, without additional regulatory restrictions, unreasonable
adverse effects on the environment, or injury to the applicator or other persons
✔✔Section 3 Registration - ✔✔Federal EPA full registration of a pesticide- the most
common type of pesticide registration.
✔✔Signal word - ✔✔One of three words (Danger, Warning, Caution) found on pesticide
labels to indicate the relative hazard of the chemical
✔✔Special Local Needs (SLN) Registration - ✔✔Type of registration that allows
individual states to expand or limit the uses of certain registered pesticides within their
jurisdictions
✔✔Statement of practical treatment - ✔✔A section of the pesticide label that provides
information on treating people who have been exposed to the pesticide. This includes
emergency first aid information
, ✔✔Toxicity - ✔✔The degree or extent that a chemical or substance is poisonous
✔✔Warning - ✔✔The signal word used on labels of pesticides considered to be
moderately toxic or hazardous
✔✔Abrasive - ✔✔Capable of wearing away or grinding down another object
✔✔Active ingredient (a.i.) - ✔✔The substance in a pesticide product that is intended to
kill, repel, or otherwise control a target pest
✔✔Adjuvant - ✔✔Chemical that is either premixed in the pesticide formulation or added
to the spray tank to improve mixing or application or to enhance pesticidal activity
✔✔Alkaline - ✔✔the opposite of acidic; having a pH greater than 7
✔✔Carrier - ✔✔The primary material used to allow a pesticide to be dispersed
effectively. For example, talc in a dust formulation
✔✔Diluent - ✔✔anything used to dilute a pesticide
✔✔Emulsifier - ✔✔agent that helps to prevent an emulsion from separating
✔✔Emulsion - ✔✔A mixture of two or more liquids that are not soluble in one another.
For example, oil droplets dispersed in water
✔✔Insoluble - ✔✔does not dissolve in liquid
✔✔Phytotoxicity - ✔✔injury to plants
✔✔Soluble - ✔✔able to dissolve in another substance, usually a liquid
✔✔Solvent - ✔✔a liquid, such as water, kerosene, xylene or alcohol, that will dissolve a
pesticide to form a solution
✔✔Suspension - ✔✔a substance that contains undissolved particles mixed throughout
a liquid
✔✔Viscous - ✔✔having a cohesive and sticky, fluid consistency
✔✔Volatile - ✔✔Evaporating rapidly; turning easily into a gas or vapor
✔✔Adsorption - ✔✔the process whereby a pesticide binds to soil particles
QUESTIONS WITH ANSWERS MARKED A+
✔✔Inert ingredients - ✔✔All materials in the pesticide formulation other than the active
ingredient. Some may be toxic or hazardous to people
✔✔Labeling - ✔✔The pesticide label and all associated materials, including
supplemental labels, special local needs registration information, and manufacturer's
information. It is a legal document
✔✔Minimum risk pesticide - ✔✔EPA-exempted pesticide not requiring registration and
considered to pose minimum risk to humans and the environment, provided the
products satisfy certain conditions
✔✔Personal Protective equipment (PPE) - ✔✔Devices and garments that protect
handlers from exposure to pesticides. These include coveralls, eye protection, gloves,
boots, respirators, aprons and hats.
✔✔Registration number - ✔✔Numbers assigned to a pesticide product to identify that
the product has been approved by the U.S. EPA.
✔✔Restricted Entry Interval (REI) - ✔✔A period of time that must elapse between
application of a pesticide and when it is safe to allow people into the treated area
without requiring that they wear PPE and receive early-worker training
✔✔Restricted use pesticide - ✔✔A pesticide which, when applied in accordance with its
directions for use, warnings, and cautions and for uses for which it is registered or for
one or more such uses, or in accordance with a widespread and commonly recognized
practice, may generally cause, without additional regulatory restrictions, unreasonable
adverse effects on the environment, or injury to the applicator or other persons
✔✔Section 3 Registration - ✔✔Federal EPA full registration of a pesticide- the most
common type of pesticide registration.
✔✔Signal word - ✔✔One of three words (Danger, Warning, Caution) found on pesticide
labels to indicate the relative hazard of the chemical
✔✔Special Local Needs (SLN) Registration - ✔✔Type of registration that allows
individual states to expand or limit the uses of certain registered pesticides within their
jurisdictions
✔✔Statement of practical treatment - ✔✔A section of the pesticide label that provides
information on treating people who have been exposed to the pesticide. This includes
emergency first aid information
, ✔✔Toxicity - ✔✔The degree or extent that a chemical or substance is poisonous
✔✔Warning - ✔✔The signal word used on labels of pesticides considered to be
moderately toxic or hazardous
✔✔Abrasive - ✔✔Capable of wearing away or grinding down another object
✔✔Active ingredient (a.i.) - ✔✔The substance in a pesticide product that is intended to
kill, repel, or otherwise control a target pest
✔✔Adjuvant - ✔✔Chemical that is either premixed in the pesticide formulation or added
to the spray tank to improve mixing or application or to enhance pesticidal activity
✔✔Alkaline - ✔✔the opposite of acidic; having a pH greater than 7
✔✔Carrier - ✔✔The primary material used to allow a pesticide to be dispersed
effectively. For example, talc in a dust formulation
✔✔Diluent - ✔✔anything used to dilute a pesticide
✔✔Emulsifier - ✔✔agent that helps to prevent an emulsion from separating
✔✔Emulsion - ✔✔A mixture of two or more liquids that are not soluble in one another.
For example, oil droplets dispersed in water
✔✔Insoluble - ✔✔does not dissolve in liquid
✔✔Phytotoxicity - ✔✔injury to plants
✔✔Soluble - ✔✔able to dissolve in another substance, usually a liquid
✔✔Solvent - ✔✔a liquid, such as water, kerosene, xylene or alcohol, that will dissolve a
pesticide to form a solution
✔✔Suspension - ✔✔a substance that contains undissolved particles mixed throughout
a liquid
✔✔Viscous - ✔✔having a cohesive and sticky, fluid consistency
✔✔Volatile - ✔✔Evaporating rapidly; turning easily into a gas or vapor
✔✔Adsorption - ✔✔the process whereby a pesticide binds to soil particles
