ACE Safety & Handling Procedures 3

Question 1

A pesticide label states 'Do not apply when wind speed exceeds 10 mph.' This instruction is primarily intended to prevent:

Accepted Answer

Off-target drift to non-pest areas or sensitive sites

Answer

Wind speed restrictions are designed to minimize pesticide drift onto non-target areas, people, water, and sensitive ecosystems.

Question 2

Which class of insecticide is most commonly associated with cholinesterase inhibition and requires specific medical monitoring for applicators?

Accepted Answer

Organophosphates and carbamates

Answer

Organophosphates and carbamates inhibit acetylcholinesterase, and workers with frequent exposure may require baseline and periodic blood cholinesterase testing.

Question 3

What does 'LD50' measure in pesticide toxicology?

Accepted Answer

The lethal dose that kills 50% of a test population

Answer

LD50 is the median lethal dose — the amount of a substance required to kill 50% of a test population, expressed in mg/kg body weight.

Question 4

When disposing of empty pesticide containers, which step is required by label directions before disposal?

Accepted Answer

Triple rinse or pressure rinse the container

Answer

Triple rinsing or pressure rinsing empty pesticide containers removes residues so the container can be safely recycled or disposed of in a landfill.

Question 5

An applicator notices that a pesticide formulation has separated and will not re-mix despite agitation. The BEST course of action is to:

Accepted Answer

Stop use, re-read the label, and contact the manufacturer

Answer

Irreversible separation may indicate product degradation or contamination; consulting the label and manufacturer ensures safe and legal use decisions.

(ACE) Associate Certified Entomologist Practice Test

(ACE) Associate Certified Entomologist Practice Test

ACE Safety & Handling Procedures 3