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Pesticide applicator core (private and commercial) practice test

160 free practice questions for this exam, each with the reason for the answer and where to look it up.

Pesticide applicator core: practice test

10 questions, graded as you go, with the reason for every answer. No sign-up.

Practice tests that prepare you for this exam

Pesticide applicator core

Federal pesticide law, labels, formulations, toxicity and protective equipment, the environment, application equipment, calibration math and integrated pest management.

160 questions for this exam

About the exam

ExamPesticide applicator core (private and commercial)
Who runs itState agriculture departments
WhereUnited States (varies by state)

Question count, time limit and pass mark differ by where you take it. Check the official candidate bulletin from the organisation that runs your exam.

Sample questions

Which factor that the applicator controls has the greatest effect on spray drift?

  1. Tank color
  2. Brand of pump
  3. Hose length
  4. Droplet size
Show the answer

D. Droplet size

Small droplets fall slowly and are carried farther by wind, so droplet size is the key factor in particle drift. It is set by nozzle type and size and by pressure.

Reference: Core Manual: Pesticides in the Environment; Application Procedures

What is the purpose of calibrating application equipment?

  1. To find out which pests are present on the site
  2. To check that the product has not passed its shelf life
  3. To make sure it delivers the intended amount evenly over the target
  4. To remove residues left from the previous product
Show the answer

C. To make sure it delivers the intended amount evenly over the target

Calibration measures and adjusts the output so the labeled rate is actually applied. Too little gives poor control; too much is illegal, wasteful and may injure the crop or leave excess residue. Removing old residues is cleaning, not calibration.

Reference: Core Manual: Application Procedures (calibration)

When an emulsifiable concentrate is added to water in the spray tank, what does it form?

  1. A clear true solution
  2. A gritty suspension
  3. A thick invert gel
  4. A milky emulsion
Show the answer

D. A milky emulsion

The emulsifier lets droplets of the oil-based concentrate disperse in water, which gives the characteristic milky look. A true solution stays clear, as with soluble powders or liquid solutions.

Reference: Core Manual: Pesticide Formulations

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