Pest Identification & Control Techniques Flashcards
7 cards from real CPA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Pest Identification & Control Techniques flashcards as text
Codling moth larvae primarily damage which part of apple trees?
Answer: Fruit interior (core)
Codling moth larvae bore into apple fruit and feed on the core and seeds, causing the classic 'wormy apple' damage.
Which type of pheromone trap is used specifically to monitor adult moth populations?
Answer: Sex pheromone (lure) trap
Sex pheromone traps use synthetic female sex pheromones to attract adult male moths for population monitoring and pest forecasting.
A field has plants with wilting that does not respond to irrigation. Roots show C-shaped white grubs. These are larvae of:
Answer: Japanese beetle or other scarab beetles
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.
Which cultural control method is most effective at reducing overwintering populations of corn rootworm?
Answer: Rotating corn fields to a non-host crop such as soybeans
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.
Powdery white coating on leaf surfaces accompanied by distorted new growth is characteristic of which pest or disease agent?
Answer: Powdery mildew (fungus)
Powdery mildew is a fungal disease that produces a characteristic white powdery coating on leaf surfaces and causes distortion of new growth.
The economic threshold (ET) in IPM is defined as the pest density at which:
Answer: Control action must be taken to prevent the economic injury level from being reached
The economic threshold is the pest density at which management action must be initiated to prevent populations from reaching the economic injury level.
Which feature distinguishes a true bug (Order Hemiptera) from a beetle (Order Coleoptera)?
Answer: True bugs have piercing-sucking mouthparts and leathery forewings; beetles have chewing mouthparts and hard elytra
True bugs (Hemiptera) have piercing-sucking mouthparts and forewings that are partly leathery and partly membranous, while beetles have chewing mouthparts and fully hardened wing covers (elytra).