CDFA Pest Prevention Plant Regulation Practice Exam

What type of citrus is specifically restricted under federal Domestic quarantine #83?

1. All oranges of foreign origin

2. All citrus of foreign origin

3. Japanese grown Unshu oranges

4. All Japanese grown citrus

The correct answer is: Japanese grown Unshu oranges

Federal Domestic Quarantine #83 specifically restricts the importation of certain citrus fruits, and in this case, it targets particularly the Japanese grown Unshu oranges. This restriction is primarily due to concerns regarding pests and diseases that are endemic to certain regions and could inadvertently be introduced into new areas through imports. Unshu oranges (also known as Satsuma mandarins) have been identified as a host for pests like the citrus greening disease, which can have devastating effects on citrus crops. The focus on Japanese grown Unshu oranges illustrates the targeted approach of the quarantine, ensuring that specific varieties that present a risk are regulated. By restricting these oranges, authorities aim to protect domestic citrus production from potential infestations and diseases that could arise from foreign imports. This reflects a precautionary principle in agricultural regulation where specific high-risk items are controlled to safeguard the entire ecosystem of local agriculture.