Since January 2018, the entire county of San Mateo has been subject to a new series of ACP regional quarantines. The county is now subject to the regional quarantine Nursery Stock Zone 2 and Zone 7 Bulk Citrus Quartarantine. Trees may move from our area to another location in our area (regardless of county lines) or to higher quarantine areas in California. Production nurseries located in Regional Quarantine Zones 2 or 3 of ACP Host Plant Nurseries, which are offered for domestic sale or distribution, must be operated under a compliance agreement with the California Department of Food and Agriculture. Any ACP (citrus stock) host material offered for sale in the county must be marked with either a yellow or blue CDFA citrus label to be sold legally. Backyard citrus fruits should not be taken in San Mateo County. For more information on identification, management, and education, please visit the California Citrus Threat website, UC Davis IPM for Asian Citrus Psyllid, and UC Division of Agriculture and Natural Resources. In San Mateo County, two confirmed discoveries of the insect Diaphorina citri were confirmed in the fall of 2015, also known as Asian Citrus Psyllid (ACP). Asian Citrus Psyllid was first discovered in California in 2008 and has spread to the southern part of the state. Insect traps were used throughout the county to detect other populations and detect the spread of the pest. Image: Jeffrey W. Lotz, Florida Department of Agriculture and Consumer Services, Bugwood.com production tree schools are required to treat all ACP host plants available for sale or distribution within a 90-day cycle.
ACP host plants that are not grown and maintained in an APHIS approved exclusion organisation may only be relocated to the regional quarantine area of the nursery within 90 days of the authorised treatment. The authorized treatment consists of both a systemic application and a leaf application containing products authorized by the program. Given that California`s citrus industry is threatened to a value of $2 billion, it is important that we work together as a community to prevent the spread of the insect. Watch this video to see how you can help. If you think the insect or disease is on your citruers, please call our office at (650) 363-4700 or the CDFA harmful hotline at (800) 491-1899. Asian Citrus Psyllid is a small, aphid-sized insect that can proctorize the deadly huanglongbing (HLB) bacteria, sometimes called citrus greening disease. THE ACP is the only known insect that can carry the disease that begins as a general decrease in the health of the tree with bitter and deformed fruits and always leads to the death of the tree. There is no known cure as soon as she has been infected with HLB. As mentioned in its common name, citrus fruits and closely related species can harbor the insect and disease.. . .