Pest Management & Integrated Pest Management (IPM) Flashcards
7 cards from real CAC 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 Management & Integrated Pest Management (IPM) flashcards as text
Pesticide resistance management best practices include which of the following strategies?
Answer: Rotating between pesticide classes with different modes of action
Rotating between pesticide classes with different modes of action prevents survivors from one class from being repeatedly selected, slowing the development of resistance in pest populations.
Which biological control strategy involves releasing large numbers of a natural enemy in a single event to temporarily suppress a pest outbreak?
Answer: Augmentative biological control — inundative release
Inundative releases involve releasing massive numbers of natural enemies to overwhelm a pest population in the short term, without expecting the released organisms to establish permanently.
When reading a pesticide label, the signal word 'DANGER' indicates that the product is:
Answer: Highly toxic — LD50 less than 50 mg/kg
The signal word DANGER (Toxicity Category I) indicates the highest level of acute toxicity, with oral LD50 values below 50 mg/kg, requiring strict safety precautions.
A pre-harvest interval (PHI) on a pesticide label specifies:
Answer: The minimum number of days that must pass between the last pesticide application and harvest
The pre-harvest interval (PHI) is the minimum number of days required between the last pesticide application and harvest to ensure residues decline to safe legal tolerances.
The mode of action of organophosphate insecticides involves:
Answer: Inhibiting acetylcholinesterase, causing continuous nerve stimulation
Organophosphates inhibit acetylcholinesterase, the enzyme that breaks down the neurotransmitter acetylcholine, leading to continuous nerve firing, paralysis, and death in insects.
Which of the following correctly describes the concept of pest resurgence?
Answer: A rapid increase in pest populations following pesticide application that kills natural enemies
Pest resurgence occurs when a pesticide application kills natural enemies along with target pests, allowing surviving pest populations to rebound rapidly without biological suppression.
Buffer zones required on pesticide labels near water bodies are primarily intended to:
Answer: Protect aquatic ecosystems from pesticide runoff and drift
Buffer zones near water bodies are mandated to protect aquatic organisms from pesticide exposure through runoff or spray drift, as many pesticides are highly toxic to fish and aquatic invertebrates.