Ontario Pesticide Core Exam study guide
Ontario Pesticide Core Exam · Work through your exam, one topic at a time.
The Ontario Pesticide Core Exam is the general-knowledge written test that must be passed, together with a category-specific exam, before Ontario issues a pesticide applicator or operator licence under the Pesticides Act and O. It is written for people who handle or supervise pesticide use as part of their work: farmers and custom applicators, landscape and turf managers, forestry and industrial vegetation crews, structural pest control operators, fumigators, and mosquito or vegetation-control programs run by municipalities and conservation authorities. The Ontario Pesticide Core Exam study guide has 9 sections and about 3,128 words.
01Ontario Pesticide Legislation, Certification and Regulatory Responsibilities
Ontario regulates pesticides through two layers that candidates constantly mix up. Federally , the Pest Control Products Act (administered by Health Canada's PMRA) decides whether a product may be sold in Canada at all: it registers the product, assigns a PCP registration number, approves the label, and sets maximum residue limits.
392 words, about 2 min02Pest Identification, Biology and Integrated Pest Management
IPM is a decision process, not a product choice. The sequence to memorise is: identify → monitor/scout and quantify → compare counts with a threshold → choose the least-risk tactic that will work → apply → evaluate and record .
326 words, about 2 min03Human Health Effects, Toxicity, Exposure Routes and PPE
Toxicity is measured by LD50 - the single dose (mg per kg body weight) that kills 50% of test animals; the lower the number, the more toxic. Always note the route (oral, dermal, inhalation): a product with a high oral LD50 can still be very hazardous through skin.
342 words, about 2 min04Formulations, Modes of Action and Resistance Management
A formulation is the active ingredient plus carriers and adjuvants. Know the trade-offs: Emulsifiable concentrate (EC): solvent-based, mixes to a milky emulsion, good coverage, but solvents can cause phytotoxicity and damage rubber or plastic, and are more irritating and flammable.
313 words, about 2 min05Labels, Safety Data Sheets and Product Information
The label is the legal document ; the Safety Data Sheet (SDS) is the hazard reference. The label tells you: product name and registration number, active ingredient and concentration, class designation, registered sites/crops and pests, application rate and timing, method and equipment, buffer zones, restricted entry interval (REI - time before workers may enter without label PPE), preharvest interval (PHI - time between last application and harvest), storage and disposal, first aid and required PPE.
354 words, about 2 min06Fate of Pesticides in the Environment and Protection of Water, Soil, Air and Non-Targets
After application a pesticide moves by drift, volatilization, leaching, runoff, adsorption and degradation . Learn three properties: half-life (persistence), water solubility , and soil adsorption (Koc) .
350 words, about 2 min07Application Equipment, Calibration and Application Techniques
Calibration means matching output to the label rate. For boom sprayers: GPA = (GPM per nozzle × 5940) ÷ (MPH × nozzle spacing in inches) Worked example: nozzle output 0.20 GPM, speed 4 mph, nozzles 20 in apart → (0.20 × 5940) ÷ (4 × 20) = 1188 ÷ 80 ≈ 14.9 GPA, roughly 139 L/ha.
331 words, about 2 min08Emergency Response, Spill Containment, First Aid and Poisoning Recognition
Emergencies split into spills and exposures . Spill response: protect people first (evacuate, keep others back, stay upwind), then stop the source (right the container, close the valve), contain it (absorbent socks, sand, soil, sawdust; build a berm; block the drain), absorb, and clean up.
342 words, about 2 min09Storage, Transport, Handling and Disposal
Storage: a dedicated, lockable, dry, ventilated structure away from food, feed, seed, fertilizer, livestock and living areas; impermeable floor with a sill or berm to contain leaks; liquids stored below powders; original labelled containers only, never drink bottles; a current posted inventory; fire extinguisher, spill kit and wash water on hand; no smoking, eating or drinking. Keep temperatures within label limits - freezing ruins some ECs and suspends powders, while heat builds pressure and degrades product.
378 words, about 2 min