NC Pesticide Applicator cheat sheet

North Carolina pesticide law is administered by the NC Department of Agriculture and Consumer Services (NCDA&CS) under the NC Pesticide Law of 1971; EPA oversees federal registration under FIFRA.

A private applicator certification in North Carolina is valid for three years and must be renewed before expiration; applying a restricted-use pesticide with an expired card is a violation.

A certified private applicator may apply restricted-use pesticides only on land owned or rented by the applicator or the applicator's employer, and may not apply for compensation on another person's property.

Commercial and public applicators must be certified and licensed; public operators apply pesticides only on property owned or controlled by a governmental unit.

A pesticide dealer must be licensed by NCDA&CS to distribute restricted-use pesticides, and must keep records of restricted-use sales for at least two years.

Applicators must keep records of restricted-use pesticide applications for at least two years; records include date, location, crop/site, product name and EPA registration number, amount, and applicator name.

Worker Protection Standard requires a 30-minute decontamination supply within a quarter mile of handlers, and notification of workers before applications on agricultural establishments.

Misuse is applying a pesticide in a manner inconsistent with its labeling; it is a violation of FIFRA even if the label statement is advisory in tone.

Signal words rank toxicity: DANGER-POISON (oral LD50 ≤50 mg/kg, or Category I), DANGER (Category I without oral criterion), WARNING (Category II), CAUTION (Category III/IV).

The LD50 is the dose killing 50% of a test population; a lower LD50 means greater acute toxicity.

PPE on the label is the legal minimum; chemical-resistant gloves, boots, coveralls, and eye protection are chosen by label-specified category (A-H).

Never store pesticides in food or beverage containers; keep products in original labeled containers and store away from food, feed, and livestock.

If pesticide contacts skin, remove contaminated clothing and wash with soap and water; if in eyes, flush with water for at least 15 minutes and seek medical care.

For a suspected poisoning, call the Poison Control Center (1-800-222-1222) and have the label and Safety Data Sheet available; do not induce vomiting unless directed.

SDS (formerly MSDS) sections cover identification, hazards, first aid, firefighting, accidental release, handling/storage, exposure controls, and toxicology.

Triple rinsing or pressure rinsing empty containers, then puncturing and disposing per label, is required before recycling or disposal in North Carolina.

Integrated Pest Management (IPM) combines monitoring, economic thresholds, biological control, cultural practices, and chemical control used only when thresholds are exceeded.

Economic threshold is the pest density at which control action is justified to prevent the pest population from reaching the economic injury level.

Pesticide resistance management includes rotating mode-of-action groups (IRAC/HRAC/WSSA classifications) and using labeled rates to slow resistance.

Weeds are identified by leaf arrangement, leaf shape, ligule/auricle presence, and growth habit; grasses have ligules/auricles while broadleaves have net-veined leaves.

Insect identification uses mouthpart type, wing number, and metamorphosis; chewing insects damage foliage while piercing-sucking insects cause stippling and transmit disease.

Plant disease diagnosis uses the disease triangle: a susceptible host, a virulent pathogen, and favorable environmental conditions must all be present.

Biological controls such as Bacillus thuringiensis (Bt) target specific caterpillar pests and reduce nontarget harm compared to broad-spectrum insecticides.

Pollinator protection: avoid applying insecticides labeled toxic to bees during bloom and apply in late evening or early morning when bees are not foraging.

Calibration formula for broadcast sprayers: GPA = (GPM × 5940) ÷ (MPH × nozzle spacing in inches).

GPM per nozzle = (GPA × MPH × nozzle spacing in inches) ÷ 5940; use to select correct nozzle size from manufacturer charts.

The 1/128-acre method: spray a measured course, collect output from one nozzle, and the ounces collected equal gallons per acre if nozzle spacing equals the course width in inches.

Nozzle output varies with the square root of pressure; doubling pressure increases flow by about 41%, so adjust rate with nozzle size or speed, not pressure alone.

Speed calibration: MPH = (distance in feet × 60) ÷ (time in seconds × 88); measure a known course and time the pass.

Boom height and nozzle spacing must match the spray angle (e.g., 110° nozzles at 20-inch spacing are typically run at 15-18 inches above target) to avoid streaks and overlap.

Nozzle wear increases flow; replace nozzles when output exceeds the new-nozzle rate by 10% or more, and check with a flow meter or timed catch.

Clean sprayers by triple rinsing and flushing the system after use; clean nozzles with a soft brush, never wire or a mouth, to avoid damage and exposure.

Pesticide drift includes particle drift (droplets moving off-target) and vapor drift (volatilization); reduce particle drift with larger droplets, lower boom height, and drift-reduction nozzles.

Buffer zones and setback distances from water, wells, and sensitive areas are specified on the label and must be followed; some products require no-spray buffers near aquatic habitat.

Groundwater contamination risk increases with high soil permeability, shallow water tables, and pesticides with high water solubility and low soil adsorption (low Koc).

Surface water contamination occurs through runoff and erosion; leave vegetated filter strips and avoid applying before forecast rain.

Pesticide movement in soil depends on adsorption (Koc) and persistence (half-life); leaching potential is higher for mobile, persistent compounds.

Protect pollinators and beneficial insects by following label pollinator warnings; avoid drift onto flowering plants and use evening applications when possible.

Endangered species protection requires following label restrictions and county bulletins; do not apply where listed species may be harmed.

Improper disposal of pesticide rinsate and containers can contaminate soil and water; follow label disposal directions and NC recycling programs for rinsed containers.