DC Pesticide Applicator flashcards

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

Label is the law

The EPA-registered label directions and restrictions legally govern pesticide use; applying a product inconsistent with its label is a violation of federal and DC law.

Restricted-use pesticide

A pesticide that may only be applied by or under the direct supervision of a certified applicator because of its potential risk to human health or the environment.

Certified applicator responsibility

The certified applicator remains legally accountable for label compliance, correct application, and recordkeeping, even when noncertified handlers perform the work under supervision.

Worker Protection Standard

Federal rule requiring notification, re-entry intervals, decontamination supplies, and training for agricultural workers and pesticide handlers in covered establishments.

Application recordkeeping

Applicators must record date, location, product name, EPA registration number, rate, and applicator identity, and retain records for the period required by DC and federal rules.

Recertification CEUs

Continuing education units earned through approved training that maintain an active DC certification; lapsed certifications may require re-examination to restore status.

Reportable spill

A pesticide release exceeding federal reportable quantities must be reported to the DC Department of Energy and Environment and, where applicable, the National Response Center.

Integrated Pest Management

A decision framework prioritizing prevention, monitoring, and biological or mechanical controls before chemical application, reducing resistance and off-target exposure.

Emulsifiable concentrate

A liquid formulation mixed with water to form an emulsion; effective on many pests but may damage sensitive foliage and requires careful agitation and PPE.

Wettable powder

A dry formulation dispersed in water that requires continuous agitation and leaves visible residue; inhalation risk during mixing calls for respiratory protection.

Signal word DANGER

Indicates EPA Category I acute toxicity, the most hazardous class; labels also show a skull and crossbones when oral LD50 is 50 mg/kg or lower.

Signal word WARNING

Indicates EPA Category II acute toxicity, moderately hazardous; requires more protective PPE and handling precautions than products labeled CAUTION.

LD50 definition

The dose of a substance lethal to 50 percent of a test population, expressed in milligrams per kilogram of body weight; lower values mean higher toxicity.

Tank mix order

Fill with water, add compatibility agents, then dry formulations, liquid flowables, emulsifiable concentrates, and finally surfactants or adjuvants, with agitation throughout.

Temperature inversion risk

A layer of warm air over cooler air traps spray droplets near the surface, allowing drift to travel long distances; avoid spraying during inversions.

Drift reduction techniques

Use low-pressure nozzles, larger droplets, drift-reduction adjuvants, and apply when wind is low and temperatures are moderate to keep spray on target.

Mode of action rotation

Alternating pesticide groups classified by IRAC, HRAC, or WSSA to prevent resistant pest populations from dominating; integrate nonchemical controls as well.

Eye exposure first aid

Flush eyes with clean water for at least 15 minutes, remove contact lenses if present, and consult the label and poison control for further guidance.

Chemical-resistant gloves

PPE required by many labels for mixing and applying formulations; select materials specified on the label and replace gloves that are torn or contaminated.

Granular formulation

A dry, pelleted formulation applied to soil or foliage that reduces drift risk but may be hazardous to birds and requires incorporation per label directions.

Adjuvant function

A substance added to a spray mixture to improve spreading, sticking, penetration, or compatibility; type and rate are specified on the product label.

Leaching potential

High water solubility combined with low soil adsorption (low Koc) increases the likelihood a pesticide moves downward into groundwater.

Pollinator protection

Apply when bees are not foraging, avoid treating blooming crops, and follow label pollinator warnings, including restrictions on neonicotinoid products.

Buffer zone

A label-specified untreated distance between an application site and sensitive areas such as water bodies or habitats, intended to prevent drift contamination.

Endangered species restrictions

EPA Bulletins Live! provide county-specific use limitations and buffer zones to protect listed species; applicators must check them before applying certain products.

Triple rinsing

Rinse empty containers three times, adding rinse water to the spray tank, then puncture or crush containers and dispose through approved programs.

Spill containment steps

Control the source, contain the spill with absorbent material, protect drains and waterways, and notify authorities when reportable quantities are exceeded.

Volatilization

Conversion of a pesticide from liquid to vapor after application, which can move off-site; low-volatility formulations and cooler application times reduce the risk.

Runoff pathway

Pesticides move across the soil surface with water, especially on sloped or compacted ground; buffer strips and reduced application rates mitigate transport.

Secondary poisoning

Nontarget wildlife is harmed by consuming pesticide-contaminated prey or bait; bait stations and label restrictions reduce exposure to predators and scavengers.

Pesticide storage rules

Store products in original labeled containers in a locked, ventilated area away from food and water, and keep spill cleanup materials readily available.

Container disposal

Empty containers must be triple-rinsed, punctured or crushed, and disposed through approved pesticide container recycling or collection programs, never in drains.