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Posted on: September 14, 2021

Treatment For The Asian Citrus Psyllid To Begin

Asian Citrus Psyllid Treatment, Citrus Tree

The California Department of Food and Agriculture (CDFA) confirmed the presence of the devasting citrus disease, huanglongbing (HLB), that is spread through the Asian Citrus Psyllid (ACP). Due to the devasting impact of the Asian Citrus Psyllid that threatens California's natural environment, CDFA has determined a treatment plan for ACP infestation. The Notice of Treatment and the associated Proclamation of Emergency Program is valid until August 27, 2022, which is the amount of time necessary to determine that the treatment was successful. A 250-meter radius of each detection site will be treated by:

  • Tempo® SC Ultra (cyfluthrin), a contact insecticide for controlling the adults and nymphs of ACP, will be applied from the ground using hydraulic spray equipment to the foliage of host plants;
  • Merit® 2F or CoreTect™ (imidacloprid), a systemic insecticide for controlling the immature life stages of ACP, will be applied to the soil underneath host plants. Merit® 2F is applied from the ground using hydraulic spray equipment. CoreTect™, which is used in place of Merit® 2F in situations where there are environmental concerns about soil surface runoff of liquid Merit® 2F, is applied by inserting tablets into the ground and watering the soil beneath the host plant

Residents of affected properties are invited to a public meeting or contacted directly by CDFA staff and are notified in writing at least 48 hours in advance of any treatment. Upon completion of treatment, notices are left with residents detailing precautions to take and post-harvest intervals to the citrus fruit on the property. For more information regarding treatment, visit CDFA's website. Please contact CDFA at 800-491-1899 for any questions related to this program. 

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