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
A pesticide applicator finds tunnels in woody stems with frass pushed out of small entry holes. This is most consistent with damage from:
Answer: Bark beetles or borers (e.g., emerald ash borer)
Bark beetles and wood-boring beetles create tunnels within woody stems and push frass (sawdust-like excrement) out of small circular exit holes.
Which biological control strategy introduces natural enemies that establish permanent populations in an area to suppress pests long-term?
Answer: Classical biocontrol
Classical biological control involves importing and releasing exotic natural enemies from a pest's native range to establish self-sustaining populations that permanently suppress the pest.
Emerald ash borer (EAB) is best identified in the adult stage by which feature?
Answer: Metallic green coloration approximately 8-14 mm long
Adult emerald ash borers are distinctively metallic bright green, 8-14 mm long, and attack only ash trees (Fraxinus species).
Which rodent control method uses a snap trap baited with peanut butter placed perpendicular to a wall?
Answer: Mechanical snap trapping exploiting thigmotaxis
Snap traps are most effective when placed perpendicular to walls to intercept rodents traveling along wall edges (thigmotaxis—the tendency to move along surfaces).
Floricane-fruiting raspberries showing wilting canes that bend into a characteristic 'shepherd's crook' shape are most likely damaged by:
Answer: Raspberry cane borer larvae girdling the cane
Raspberry cane borer adults girdle the cane in two rings near the tip, causing the tip to wilt and droop into the characteristic shepherd's crook shape.
What distinguishes a Class A (acute oral LD50 ≤ 50 mg/kg) pesticide toxicity rating from a Class C rating?
Answer: Class A is the most acutely toxic and requires DANGER-POISON labeling
Toxicity Category I (most toxic, LD50 ≤ 50 mg/kg oral) requires the signal word DANGER and POISON on the label, while less toxic categories use WARNING or CAUTION.
Which scouting method involves counting pest insects on a set number of plants and comparing results against established action thresholds?
Answer: Direct count or plant inspection
Direct count or plant inspection scouting involves examining a set number of plants per field unit and tallying pest insects to compare against action thresholds.