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These 10 free AZ-PEST questions are organized by exam domain, so you can see how each part of the Arizona Pest Management Division Certified Applicator Core Exam blueprint is tested. Reveal the answer and explanation under each question.
A pesticide label lists ornamental shrubs as a use site, allows 1-2 pints per acre, limits applications to twice per year, and does not prohibit FIFRA section 2(ee) uses. Arizona law permits the federal variation. Which proposal is lawful?
Correct answer: C - Treat an unlisted aphid on labeled ornamental shrubs at 1.5 pints per acre while obeying all other directions.
A formulated pesticide has an oral LD50 of 700 mg/kg, dermal LD50 of 2,500 mg/kg, inhalation LC50 of 3 mg/L, mild skin irritation, and corrosive eye effects. How must the product be labeled for acute hazard?
Correct answer: B - DANGER, with no automatic POISON or skull-and-crossbones requirement from eye corrosion alone.
During a greenhouse application of an organophosphate insecticide, an applicator develops pinpoint pupils, heavy salivation, muscle twitching, and breathing difficulty. What should the crew leader do immediately?
Correct answer: A - Stop the exposure, begin decontamination, call 911 and Poison Control, and make the product label available to responders.
At sunrise, wind at the spray boom is light and steady. Smoke from a nearby test source remains in a flat layer and moves sideways instead of rising. What is the defensible application decision?
Correct answer: B - Postpone until the inversion breaks and normal vertical mixing resumes.
A row of ornamentals develops uniform leaf scorch within hours after a maintenance crew washes an adjacent wall. The injury follows the runoff path; inspection finds no insects, frass, webbing, spores, or progressive spread. What conclusion is best supported?
Correct answer: A - Abiotic chemical injury; confirm the exposure before choosing a pesticide.
Two products contain the same active ingredient and are both labeled for a solvent-sensitive ornamental planting. One is an emulsifiable concentrate (EC); the other is a water-dispersible granule (WDG). The sprayer has reliable agitation. Which formulation plan best reduces solvent-injury risk while remaining label-compliant?
Correct answer: D - Use the WDG and maintain agitation so its suspension remains uniform.
A pest population survives repeated treatments. The applicator has alternated two brand names, but both products act on the same biochemical target. What change most directly addresses the resistance risk?
Correct answer: C - Use an effective different mode of action and integrate nonchemical controls.
After cleaning five matched boom nozzles, a technician collects 29, 30, 31, 30, and 36 fluid ounces over the same test interval. A tip must be replaced when its output differs by more than 10% from the average. Which nozzle decision follows from these results?
Correct answer: B - Replace the 36-fluid-ounce tip and repeat the calibration.
A certified applicator holds Core and the applicable category for each proposed task. Assume every product and site is otherwise labeled. Which assignment still requires additional certification?
Correct answer: D - Release pesticide from an unmanned aircraft over the treatment site.
An applicator holds a current certification from another state operating under an EPA-approved certification plan and wants to perform the same category of work in Arizona. What must occur before relying on reciprocity?
Correct answer: D - Apply in Arizona, obtain issuing-jurisdiction verification, and receive Arizona's equivalency decision.
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