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These 10 free NE-PEST questions are organized by exam domain, so you can see how each part of the Nebraska Commercial Pesticide Applicator General Standards Exam blueprint is tested. Reveal the answer and explanation under each question.
A herbicide label permits 1 to 2 pints per acre per application, no more than 4 pints per acre per year, no more than three applications, and at least 14 days between applications. A field received 1.5 pints per acre on May 10 and 1.5 pints per acre on May 27. On June 12, weeds have regrown. What is the highest lawful rate for a third application?
Correct answer: B - 1 pint per acre
An insecticide is labeled for use on soybeans at 4 fluid ounces per acre. The target insect found in the field is not named on the label, but soybeans are a labeled site, the label does not restrict use to listed pests, and no Nebraska requirement prohibits the use. Which action is permitted?
Correct answer: B - Apply at the labeled soybean rate and follow every restriction
A formulated pesticide has an oral LD50 of 900 mg/kg, a dermal LD50 of 5,000 mg/kg, and an inhalation LC50 of 0.15 mg/L. It is not corrosive to skin or eyes. Which front-panel hazard statement is required by the most severe acute endpoint?
Correct answer: D - DANGER, with POISON and the skull-and-crossbones symbol
While mixing an organophosphate insecticide, an applicator is drenched by a ruptured hose. Minutes later, the applicator has pinpoint pupils, heavy salivation, muscle twitching, and difficulty breathing. What action best addresses the emergency?
Correct answer: B - Protect the rescuer, stop exposure, decontaminate, and call 911
After two hours in chemical-resistant coveralls on a hot afternoon, an applicator becomes weak, nauseated, and dizzy. The skin is cool, pale, and sweaty; the applicator remains alert and answers questions normally. No leak, splash, drift, or other pesticide exposure is known. Which diagnosis and initial response are most consistent with these findings?
Correct answer: D - Heat exhaustion; stop work, cool the applicator, and give fluids while alert
A pesticide label requires respiratory protection from organic vapor and spray mist. An applicator proposes wearing a disposable N95 filtering facepiece because it fits well. What is the key problem with that choice?
Correct answer: D - It filters particles, not organic vapor
Before a dawn application, the on-site wind meter shows nearly calm air. Smoke from a nearby burn pile forms a thin layer and drifts sideways across a low field instead of rising. What does this most strongly indicate?
Correct answer: C - A temperature inversion that can trap and transport fine droplets
A persistent herbicide is highly water-soluble and weakly adsorbed to soil. The proposed site has coarse sand, shallow groundwater, and heavy irrigation scheduled after treatment. Which off-site movement pathway is the primary concern?
Correct answer: A - Leaching through the soil profile
A bee-toxic insecticide label prohibits application while bees are foraging in the treatment area. Flowering weeds throughout the field are covered with actively foraging bees, although the crop itself is not blooming. The labeled method is a broadcast application, and the grower has already notified nearby beekeepers. What should the applicator do?
Correct answer: A - Delay until the label's foraging restriction can be met
Weekly scouting finds 3 larvae per 20 plants. The established action threshold is 8 larvae per 20 plants, crop damage is minimal, and predator numbers are increasing. What is the most appropriate IPM decision today?
Correct answer: B - Continue monitoring and preserve the beneficial predators
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