MA Pesticide Applicator flashcards

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

Economic injury level

The pest density at which the cost of control equals the value of crop loss avoided; action thresholds are set at or below this level to trigger treatment before losses exceed control costs.

Degree-day accumulation

A phenology tool calculated as [(daily maximum + daily minimum)/2] minus a lower developmental threshold; accumulated totals predict insect life stages and timing of scouting or treatment.

SLUDGE syndrome

Signs of cholinesterase-inhibitor poisoning: salivation, lacrimation, urination, diarrhea, gastrointestinal upset, and emesis; caused by organophosphate or carbamate exposure and treated medically with atropine.

Restricted-entry interval

The minimum time after a pesticide application before workers may enter the treated area without required PPE; stated in the Agricultural Use Requirements box on the label.

Signal word DANGER-POISON

Toxicity Category I designation for products with oral LD50 of 50 mg/kg or less; the label carries the skull and crossbones symbol and the word POISON.

Safety Data Sheet

A 16-section OSHA HazCom document describing hazards, first aid, handling, exposure controls, and disposal; it communicates hazard but does not replace the label as the legal use instruction.

Emulsifiable concentrate

A liquid formulation (EC) containing active ingredient, solvent, and emulsifier that forms an emulsion in water; solvent content raises dermal absorption and phytotoxicity risk.

Jar compatibility test

A small-scale mix using the same water source and product ratios as the planned tank mix; observe for separation, flocculation, heat, or sludge before mixing a full batch.

Surfactant adjuvant

A surface-active agent that lowers water surface tension, improving wetting, spreading, and coverage of spray droplets on leaf surfaces; rate is label-specific.

Sprayer calibration formula

Gallons per acre = (nozzle flow in GPM × 5940) divided by (speed in MPH × swath width in inches); verify by measuring output over a known area.

Triple rinse

A container-cleaning procedure: fill one-quarter full with water, shake, drain into the spray tank, and repeat three times; then puncture or crush and dispose per state rules.

Tank mix order

Fill half with water, add compatibility agent, then dry formulations, then liquids, then adjuvants last, maintaining agitation; follow label if it specifies a different order.

Temperature inversion

A stable air layer where temperature increases with height; droplets can hang and move off-target, so spraying should be avoided even when surface wind is calm.

Drift-reduction nozzle

A nozzle designed to produce larger, coarser droplets that resist off-target movement; may reduce coverage, so match to target and label requirements.

Buffer zone

A label-specified distance between the application area and sensitive sites such as water bodies, habitats, or crops; must be maintained during application.

Leaching

Downward movement of pesticide through soil toward groundwater; favored by high water solubility, low soil adsorption, sandy soils, and heavy rainfall or irrigation.

Pollinator protection box

A label section listing specific bee hazards and timing restrictions, such as avoiding application during bloom or applying in the evening when pollinators are not foraging.

Half-life DT50

The time required for 50 percent of a pesticide to dissipate in soil, water, or on plants; longer half-lives indicate greater persistence and environmental risk.

Secondary containment

A structure or tray under storage containers that captures leaks and spills, preventing pesticide movement into soil, drains, or water; required in many storage areas.

Spill absorbent

Material such as kitty litter, sand, or soil used to contain a liquid pesticide spill; after absorption, the material is collected and disposed of per regulations.

Reportable spill

A release exceeding state thresholds that must be reported to the Massachusetts DEP and local authorities; records of the incident and cleanup must be kept.

Poison control number

The national toll-free line 1-800-222-1222 for exposure advice; have the product label and EPA registration number ready when calling.

Atropine

A medical treatment for cholinesterase-inhibitor poisoning that blocks muscarinic effects such as salivation and bradycardia; administered by medical personnel, not self-treated.

Paraquat poisoning

A corrosive herbicide exposure causing severe lung injury and multi-organ failure; do not induce vomiting, and seek emergency medical care immediately.

FIFRA

The federal insecticide, fungicide, and rodenticide act governing pesticide registration, labeling, and use; use inconsistent with the label is a violation.

Massachusetts Pesticide Control Act

M.G.L. c. 132B, administered by MDAR with regulations in 333 CMR; governs licensing, certification, and pesticide use in Massachusetts.

Application record

Documentation including product name, EPA registration number, rate, date, time, location, applicator, and weather; kept for the period required by state and label.

Restricted-use pesticide

A pesticide that may be applied only by or under the supervision of a certified applicator because of acute toxicity or environmental hazard; check state lists for additional limits.

Integrated pest management

A decision framework combining prevention, monitoring, thresholds, biological and cultural controls, and chemical control as a last tier to reduce pest damage and resistance.

Abiotic injury

Plant damage from weather, chemicals, or nutrition that is uniform across species and follows environmental patterns, unlike patchy, species-specific biotic injury.

Respirator fit testing

A required check that a respirator seals to the face; must be done before use along with medical evaluation and a cartridge change schedule under OSHA 1910.134.

Heat stress

A risk when wearing PPE in hot conditions; signs include confusion, cramps, nausea, and hot dry skin; manage with acclimatization, water, shade, and cooler work hours.