CAC Pest Management & Integrated Pest Management (IPM) 2

Question 1

Pesticide resistance management best practices include which of the following strategies?

Accepted Answer

Rotating between pesticide classes with different modes of action

Answer

Applying the same pesticide class repeatedly to ensure complete control

Answer

Using sub-lethal pesticide rates to reduce selection pressure

Answer

Restricting pesticide use to only one application per season regardless of pest levels

Question 2

Which biological control strategy involves releasing large numbers of a natural enemy in a single event to temporarily suppress a pest outbreak?

Accepted Answer

Augmentative biological control — inundative release

Answer

Classical biological control

Answer

Conservation biological control

Answer

Augmentative biological control — inoculative release

Question 3

When reading a pesticide label, the signal word 'DANGER' indicates that the product is:

Accepted Answer

Highly toxic — LD50 less than 50 mg/kg

Answer

Slightly toxic — LD50 greater than 5,000 mg/kg

Answer

Moderately toxic — LD50 between 500 and 5,000 mg/kg

Answer

Relatively non-toxic — no PPE required

Question 4

A pre-harvest interval (PHI) on a pesticide label specifies:

Accepted Answer

The minimum number of days that must pass between the last pesticide application and harvest

Answer

The minimum number of days between planting and first pesticide application

Answer

The maximum number of pesticide applications allowed per crop season

Answer

The minimum soil temperature required for effective pesticide activity

Question 5

The mode of action of organophosphate insecticides involves:

Accepted Answer

Inhibiting acetylcholinesterase, causing continuous nerve stimulation

Answer

Disrupting insect molting hormones (ecdysones)

Answer

Blocking sodium channels in nerve cell membranes

Answer

Interfering with chitin synthesis during larval development

Question 6

Which of the following correctly describes the concept of pest resurgence?

Accepted Answer

A rapid increase in pest populations following pesticide application that kills natural enemies

Answer

A pest population that develops resistance to a pesticide after repeated exposures

Answer

The return of a pest species from overwintering sites in spring

Answer

A secondary pest becoming economically important after target pest control

Question 7

Buffer zones required on pesticide labels near water bodies are primarily intended to:

Accepted Answer

Protect aquatic ecosystems from pesticide runoff and drift

Answer

Prevent wind drift from damaging adjacent crops

Answer

Ensure the applicator maintains safe distance from bystanders

Answer

Reduce pesticide volatilization in high-temperature conditions