VT Pesticide Applicator key terms

The federal law-the Federal Insecticide, Fungicide, and Rodenticide Act-that governs how pesticides are registered, labeled, sold, and used nationwide. States may adopt stricter rules but cannot be less restrictive than FIFRA.

EPA's approval of a pesticide product for specific uses and sites, identified by an EPA registration number printed on the label. Applying a product in a manner not covered by its registration violates federal law.

A product EPA determines may harm people or the environment without extra training, so it may be sold to and used only by, or under the direct supervision of, a certified applicator.

A person who has passed the required competency exams and holds a current credential from the state, allowing legal use of restricted-use pesticides or supervision of their use by others.

A certified applicator who uses restricted-use pesticides on land they or their employer own or rent to produce an agricultural commodity, without being paid by others for the application.

A certified applicator who applies pesticides for hire, on property they neither own nor rent, or who supervises such work. Certifications are issued by category of pest control work.

The Vermont agency that administers the state pesticide law: it certifies applicators and dealers, reviews registration requests, investigates complaints, and enforces pesticide requirements within the state.

A state-level registration allowing an additional use of an already federally registered product to solve a pest problem unique to that state. It appears on a supplemental label issued through EPA.

Temporary EPA authorization to use an unregistered pesticide, or a registered one in a new way, during an emergency outbreak when no registered product can control the pest.

The product label plus every accompanying item-supplemental labels, brochures, worker safety sheets, and directions-that EPA treats as part of the product's legally binding instructions and warnings.

The federal rule protecting agricultural employees from pesticide exposure. It requires employer training, application notification, decontamination supplies, and compliance with restricted-entry intervals on farms, forests, nurseries, and greenhouses.

The period immediately after an application during which entering the treated area is prohibited unless the label's required protective equipment is worn. It is printed on the label and posted at the site.

The word-DANGER, WARNING, or CAUTION-printed on the label to show the product's relative acute toxicity, with DANGER indicating the greatest hazard and CAUTION the least.

A measure of acute toxicity: the dose expected to kill half of a test population of animals, usually stated in milligrams of product per kilogram of body weight. Lower values mean greater toxicity.

The clothing and gear-such as gloves, coveralls, boots, eyewear, and respirators-specified on the label to reduce an applicator's or worker's contact with pesticides.

A check that a respirator seals against the wearer's face. It is required before first use and repeated at least annually, using qualitative or quantitative test methods and the correct cartridge type.

Movement of spray droplets, dust, or vapor away from the target area by wind or air currents. Drift can injure crops, people, and wildlife and is a frequent cause of enforcement action.

An untreated strip of land or water between the application site and a sensitive area such as a home, school, well, or stream, required by certain labels and state rules.

The maximum pesticide residue level legally permitted in or on food or feed, set by EPA. Food containing residues above the tolerance may not be sold.

The minimum number of days that must pass between the last pesticide application and harvest of the crop, set so that residues stay within the established legal tolerance.

The legal duty of certified applicators to document each application-product, rate, date, site, and applicator-and to keep those records available for inspection for the period state and federal rules specify.

A container-cleaning procedure: empty the container, fill it about one-quarter full, rinse, and drain three times, adding each rinse to the spray tank, then recycle or puncture the container.

A decision-making approach that combines pest monitoring, sanitation, biological and cultural controls, and pesticides used only when economic or public health thresholds are exceeded.

The pest population level at which control should begin, chosen so the pest does not reach the density where damage to the crop exceeds the cost of treatment.

The inherited ability of a pest population to survive a dose that once controlled it, developing most often after repeated use of a single product or mode of action.

The specific biochemical process by which a pesticide harms a pest, such as blocking a nerve receptor or an enzyme. Rotating among modes of action slows the development of resistance.

Measuring and adjusting a sprayer's nozzle output, travel speed, and swath width so the intended amount of product is delivered uniformly across the target area.

An adjuvant that lowers the surface tension of spray droplets, improving coverage and uptake on waxy or hairy leaf surfaces. It may be added only if the product label allows it.

Downward movement of a pesticide through soil with water toward groundwater. Risk rises in sandy soils, with heavy rain or irrigation, and with highly water-soluble products.

Requirements tied to the federal Endangered Species Act: labels, bulletins, and local maps may restrict where and when pesticides can be used so listed plants and animals are not harmed.

Practices and label restrictions that reduce honey bee and wild bee exposure, such as spraying outside bloom periods, avoiding fine dust from treated seed, and notifying nearby beekeepers.

State authorization required before treating Vermont waters to control nuisance plants or insects. The permit sets conditions on treated area, dose, timing, and notification of shoreline owners.

Land used for travel or transport-roadsides, utility corridors, railroad beds, and similar strips-where vegetation control aims at safety, visibility, and access rather than crop production.

Applying a pesticide as a gas or vapor in a sealed space-soil, a building, or a stored commodity-to kill pests throughout the treated volume. It requires specialized training and strict posting and buffer rules.

An invasive beetle whose larvae kill ash trees. Vermont manages it through surveys, movement restrictions, removal of infested trees, and insecticide trunk injections on high-value trees.

Applying herbicide directly to the freshly cut surface, and often the sides, of a stump to prevent resprouting. It is a common low-volume method in forest and right-of-way vegetation control.