CDFA Pest Prevention Plant Regulation Practice Exam

What is the area under quarantine in California for citrus and woolly white flies?

1. a portion of the county of riverside only

2. all portion of the state of CA, south of the Tehachapi mountains

3. portions of the counties of Sacramento, Fresno, and San Diego

4. the entire county of San Diego only

The correct answer is: portions of the counties of Sacramento, Fresno, and San Diego

The area under quarantine for citrus and woolly white flies in California includes specific counties because these pests affect agricultural resources that are critical to the state's economy. The correct response highlights that the quarantine measures are taken in portions of several counties, including Sacramento, Fresno, and San Diego. This decision is based on the distribution and prevalence of these pests, which can lead to significant damage to citrus crops if not managed properly. Each of these counties has been identified as having environments conducive to the infestation, necessitating specific quarantine regulations. Focusing on all portions of the state south of the Tehachapi mountains near the southern end of California does not accurately pinpoint the specific counties where these pests have been confirmed, as it implies a broader area than is necessary for effective quarantine measures. Similarly, declaring the entire county of San Diego as quarantined would overlook the actual distribution of the pests, which may not affect every part of the county equally. Lastly, recognizing only a portion of Riverside County as quarantined would not account for the detected presence of the pests in the specified counties mentioned in the correct answer. Quarantine measures are essential for protecting California's agricultural health, and accurately identifying affected areas helps ensure that pest management strategies are effectively implemented.