California Asian Citrus Psyllid Quarantine Update

Posted by Christina Herrick|January 18, 2016

The California Department of Food and Agriculture (CDFA) recently released an update on how the agency is working with California residents, citrus growers, and other stakeholders to control the spread of the Asian citrus psyllid (ACP). Quarantines for ACP provide a mechanism for controlling the movement of plants and plant materials that may harbor the insect.

Here’s an update on expansions of the areas under quarantine in the Central Valley due to recent detections of ACP. In Kern County, following the detection of multiple ACPs in and around the city of Bakersfield, an existing quarantine was expanded by 28 square miles.

Due to a single detection of ACP in the Mettler area of Kern County, a new quarantine measuring 114 square miles has been added. In San Joaquin County, a single detection of ACP in an unincorporated area near the City of Stockton expanded an existing quarantine by 94 square miles. And in Madera County, following the detection of one ACP in the Sumner Hill area, an existing quarantine was expanded by 84 square miles. This quarantine zone also takes in a portion of Fresno County along its border with Madera County. The total square miles under quarantine for ACP in Fresno (174), Kern (1,260), Madera (225), Merced (17), San Joaquin (294), Stanislaus (84), and Tulare (4,838) counties is 6,892. The total for the state is 53,087 square miles.

The quarantine maps for all counties are available online and this link will provide information for future quarantine expansions in these counties.

ACP county-wide quarantines remain in place in Imperial, Los Angeles, Orange, Riverside, San Bernardino, San Diego, Santa Barbara, Tulare, and Ventura Counties, with portions of Alameda, Fresno, Kern, Madera, Merced, San Benito, San Francisco, San Joaquin, San Luis Obispo, San Mateo, Santa Clara, and Stanislaus counties also under quarantine.