SD Pesticide Applicator key terms

A person who has passed the required competency exam and holds a valid certification or license from the state to apply or supervise applications of restricted-use pesticides. Certification is tied to specific categories of pest control work.

A pesticide that EPA has determined may cause unreasonable harm to people or the environment even when the label is followed, so it may be sold to and used only by certified applicators or people working under their direct supervision.

The Federal Insecticide, Fungicide, and Rodenticide Act, the federal law that governs how pesticides are registered, labeled, distributed, and used in the United States. States such as South Dakota enforce it alongside their own pesticide rules.

A state-issued registration allowing sale and use of a pesticide for an additional local use, such as a crop or pest not covered by the federal label, when a genuine local need has been documented.

A certified applicator who applies or supervises restricted-use pesticides on property they own, rent, or manage for producing an agricultural commodity, such as a farm, ranch, or orchard.

Federal rules protecting agricultural employees from pesticide exposure, covering handler and worker training, notification of applications, decontamination supplies, and waiting periods before entering treated areas.

The word on a pesticide label, either DANGER, WARNING, or CAUTION, that reflects the product's relative acute toxicity and tells the user roughly how hazardous it is. DANGER-POISON marks the most toxic products.

Label wording describing hazards to people, domestic animals, and the environment, and telling the user what protective equipment, handling practices, and first aid measures are required.

The length of time after a pesticide application during which entering the treated area is prohibited unless the person wears the protective equipment the label specifies.

Applying a pesticide in any way that conflicts with label requirements, such as a different site, rate, timing, or method. It violates federal law and can lead to enforcement action or liability for damages.

The chemical or chemicals in a pesticide product that actually control the target pest. The label lists each one by name and percentage; the remainder of the formulation is made of inert ingredients.

Label text warning of risks to wildlife, fish, pollinators, or water, often with specific instructions such as not applying near water or not spraying when bees are foraging.

The dose of a pesticide that kills 50 percent of a test animal population under stated conditions, usually given in milligrams per kilogram of body weight. Lower values mean greater acute toxicity.

The harm caused by a single short-term exposure to a pesticide, such as a splash on the skin or a breath of spray mist. It is measured by tests such as LD50 and drives the signal word.

Health effects that appear after repeated or long-term exposure to small amounts of a pesticide, such as organ damage, cancer, or reproductive harm. A product's signal word does not predict these effects.

A reduction in the enzyme that regulates nerve signaling, caused by organophosphate and carbamate insecticides. Blood monitoring can reveal overexposure before serious poisoning symptoms appear.

Protective clothing, gloves, boots, aprons, and eyewear made of materials that resist penetration by pesticide formulations. The label lists required items and often the material type to use.

A check confirming that a respirator seals properly against a person's face. It is required before use, and respirator users must also be medically evaluated, trained, and fit tested periodically.

A standardized document supplied by the manufacturer that details hazard, handling, first aid, and spill information for a pesticide product. It supplements but does not replace the product label.

A decision-making approach that combines pest monitoring, sanitation, cultural practices, biological control, and pesticides used only when needed, to suppress pests with the least risk to people and the environment.

The pest population level at which control measures should begin so the population does not rise to a level that causes unacceptable damage, loss, or nuisance.

The inherited ability of a pest population to survive a pesticide dose that would normally kill it. It develops when one mode of action is used repeatedly, so rotating modes of action is recommended.

The way a pesticide kills or disrupts a pest, for example by blocking a nerve signal or inhibiting an enzyme. Products sharing a mode of action are grouped together for resistance management.

Using living organisms such as predators, parasites, or pathogens to reduce pest populations. It is a key tool in integrated pest management and may be combined with carefully selected pesticides.

The downward movement of pesticides through soil with water into groundwater. The risk is higher with highly soluble products, sandy soils, and heavy rainfall or irrigation.

Pesticide movement across the soil surface carried by water, usually after rain or irrigation, which can deliver chemicals to streams, ponds, and drainage ditches.

The buildup of a pesticide in an organism's body over time through repeated exposure, which can then be passed along the food chain and harm fish, birds, and other wildlife.

The change of a pesticide from a liquid or solid into a vapor after application, which can move off-site and injure sensitive plants. Temperature, wind, and formulation affect the risk.

An untreated strip of a set width between an application site and a sensitive area such as water or habitat, required by some labels to reduce drift and contamination risk.

Water contamination that comes from many diffuse sources rather than a single pipe, such as pesticide runoff from fields, lawns, and roads. It is the most common cause of water quality problems.

Measuring and adjusting application equipment so it delivers the intended amount of pesticide mixture evenly over a known area. It should be checked before the season and whenever conditions or products change.

Off-target movement of pesticide droplets or particles through the air during or soon after application. Wind speed, nozzle type, pressure, and boom height all affect how much drift occurs.

A container cleaning procedure in which the emptied pesticide container is drained, filled about one-quarter full with water, shaken, and emptied into the spray tank, repeated three times.

A curb, dike, tub, or pad placed beneath pesticide storage and mixing areas to catch and hold leaks and spills so chemicals cannot reach soil, floor drains, or water.

A small-scale test in which pesticide products and additives are mixed with water in a clear jar to see whether they stay mixed, clump, or separate before the full spray tank is prepared.

A stocked set of absorbent materials, containers, shovels, and protective equipment kept available so a pesticide spill can be contained and cleaned up quickly and safely.

Written documentation of each pesticide application, including date, location, product, rate, amount applied, and applicator. Records are legally required for restricted-use pesticides and help with planning and liability protection.