CPA Pest Identification & Control Techniques 3

Question 1

Codling moth larvae primarily damage which part of apple trees?

Accepted Answer

Fruit interior (core)

Answer

Codling moth larvae bore into apple fruit and feed on the core and seeds, causing the classic 'wormy apple' damage.

Question 2

Which type of pheromone trap is used specifically to monitor adult moth populations?

Accepted Answer

Sex pheromone (lure) trap

Answer

Sex pheromone traps use synthetic female sex pheromones to attract adult male moths for population monitoring and pest forecasting.

Question 3

A field has plants with wilting that does not respond to irrigation. Roots show C-shaped white grubs. These are larvae of:

Accepted Answer

Japanese beetle or other scarab beetles

Answer

C-shaped white grubs with a distinct head capsule are larvae of scarab beetles such as Japanese beetle, which feed on plant roots causing wilting.

Question 4

Which cultural control method is most effective at reducing overwintering populations of corn rootworm?

Accepted Answer

Rotating corn fields to a non-host crop such as soybeans

Answer

Corn rootworm eggs are laid in corn fields and larvae require corn roots to survive, so rotating to a non-host crop starves emerging larvae.

Question 5

Powdery white coating on leaf surfaces accompanied by distorted new growth is characteristic of which pest or disease agent?

Accepted Answer

Powdery mildew (fungus)

Answer

Powdery mildew is a fungal disease that produces a characteristic white powdery coating on leaf surfaces and causes distortion of new growth.

(CPA) Certified Pesticide Applicator Practice Test