Private Applicator key terms

A decision-making approach that combines monitoring, sanitation, cultural practices, biological controls, and pesticides, using chemicals only when monitoring shows pests exceed acceptable levels.

The pest population level at which the cost of control equals the value of crop damage the pest would cause, so treatment is justified only when pests reach or exceed this point.

The inherited ability of a pest population to survive a pesticide application that would normally control it, often developing after repeated use of products with the same mode of action.

The specific way a pesticide disrupts a pest's biological process, such as blocking nerve signals or preventing cell division; rotating modes of action slows the development of resistance.

The printed information attached to or accompanying a pesticide container. It is a legal document that must be followed and gives use sites, rates, and safety precautions.

Label sections describing hazards to people, animals, and the environment and specifying required protective equipment, first aid, and safe handling practices for the product.

The minimum time after a pesticide application during which people may not enter the treated area without the protective equipment specified on the label.

The minimum number of days between the last pesticide application and harvesting the crop, ensuring residues stay within tolerances set by regulators.

A standardized document from the manufacturer giving detailed hazard, handling, first aid, and emergency information for a chemical product; it supplements but does not replace the pesticide label.

A pesticide product that may be applied only by, or under the direct supervision of, a certified applicator because it poses greater risk to people or the environment.

A person who has passed the required competency examination and been licensed by the state to apply, or supervise applications of, restricted-use pesticides.

The maximum legal pesticide residue level allowed on or in a food or feed commodity, established by EPA; exceeding it makes the food adulterated and illegal to sell.

The physical form in which a pesticide's active ingredient is packaged and sold, such as liquid, powder, granule, or bait, along with carriers and additives.

Any substance added to a spray mixture to improve its performance or handling, such as a surfactant that helps the spray spread and stick to leaf surfaces.

A surface-active agent that reduces the surface tension of spray droplets, improving coverage and uptake on waxy or hairy plant surfaces.

A liquid formulation containing active ingredient dissolved in solvent with emulsifiers, which mixes with water to form a milky emulsion; the solvents may damage some plants or equipment.

A dry powder formulation that is mixed with water and sprayed as a suspension, requiring constant agitation to keep particles from settling out of the tank.

The ability of two or more pesticide products or adjuvants to be mixed and applied together without undesirable chemical or physical reactions such as clumping, separation, or reduced control.

The single dose of a substance, usually expressed in milligrams per kilogram of body weight, that kills 50 percent of test animals; a lower value indicates greater acute toxicity.

A required word on the label - DANGER, WARNING, or CAUTION - that indicates the relative acute toxicity hazard of the product, with DANGER being the most hazardous.

One of four EPA hazard groupings (I through IV) based on acute oral, dermal, inhalation, and eye irritation data; the category determines signal words and label requirements.

Health effects that appear after repeated or long-term exposure, such as cancer, organ damage, or reproductive harm, as opposed to the immediate effects of acute poisoning.

Clothing and gear such as gloves, coveralls, boots, goggles, and respirators worn to reduce contact with pesticides, with the specific items listed on the product label.

A device worn over the face that filters or supplies air to protect the lungs from pesticide dusts, mists, or vapors; it must be selected and fit-tested per label directions.

Gloves made of materials such as nitrile or butyl rubber that resist penetration by pesticide products, chosen according to the label and replaced when torn or contaminated.

The sprayer component that meters and shapes the spray, controlling droplet size, flow rate, and pattern; worn or incorrect nozzles cause uneven coverage, drift, or misapplication.

The process of measuring and adjusting a sprayer's output so the correct amount of product is applied uniformly over the target area.

The movement of pesticide droplets or particles off the target area by wind or air currents during or shortly after application, which can injure nontarget plants and people.

Pesticide movement across the soil surface with rainwater or irrigation, which can carry chemicals into streams, ponds, and other surface water.

The downward movement of pesticides through the soil with water, potentially reaching groundwater; risk rises with sandy soils, high rainfall, and persistent, water-soluble products.

An untreated area of specified width between an application site and a sensitive area such as water, habitat, or a building, intended to protect it from drift and contamination.

A liquid-tight structure or surface under pesticide containers and mixing equipment that holds spills and leaks, preventing them from reaching soil, drains, or groundwater.

A set of absorbent materials, containers, and protective supplies kept on hand so that small pesticide spills can be contained and cleaned up quickly and safely.

A container-cleaning procedure in which the empty pesticide container is filled one-third full with water, shaken, and drained three times, with each rinse added to the spray tank.

A pesticide, often an organophosphate or carbamate, that blocks the enzyme which breaks down acetylcholine, causing nerve signals to overfire and producing poisoning symptoms.

A substance given to counteract a poison's effects; the pesticide label should be consulted, because some products have specific antidotes while others require only supportive care.

Immediate care given to a poisoned person before professional medical help arrives, following the label's first-aid section, such as washing skin or flushing eyes.