Treatment Schedules by Region
Treatment strategies for the Asian citrus psyllid are different in various regions of the state depending on if the psyllid is well-established (requiring an area-wide management strategy) or is new to an area (requiring an eradication strategy). More details about eradication strategies and treatments can be found on the University of California’s website.
Below are the currently scheduled coordinated and area-wide treatments across the state. All dates and information are subject to change. For additional questions or information, contact your grower liaison about area-wide management and how to implement the recommended protocols.
Central Coast
An advisory group of Santa Barbara Co. growers, ranch managers, PCAs, PCOs, UC and SB CAC representatives recommend delaying area-wide Fall ACP treatments until further notice. It is still recommended to treat if you find ACP in your grove. Local PCAs will work with University of California researchers to combine ACP field scouting data with ACP degree-day modeling to determine the next area-wide treatment window for our county. Stay tuned for more email updates as the Fall schedule for coordinated treatments develops.
Eradication – no area-wide treatment
Summer 2023:
- May 1 – May 29: V-5, V-6, V-31, V-32, V-34, V-35
- May 22 – Jun 19: V-7, V-8, V-24, V-25, V-29, V-30
- Jun 12 – Jul 10: V-3, V-4, V-9, V-23, V-27, V-28, V-33 V-44, V-45, V-46, V-47, V-48, V-49, V-50
- Jul 3 – Jul 31: V-1, V-2, V-16, V-21, V-22, V-26
- Jul 24 – Aug 21: V-15, V-18, V-19, V-20, V-42, V-43
- Aug 14 – Sep 11: V-10, V-13, V-14, V-37, V-38, V-39
- Sep 4 – Oct 2: V-11, V-12, V-17, V-36, V-40, V-41
Central Valley
Eradication – no area-wide treatment
Fall 2023:
- Due to the higher trap finds than normal last fall and earlier this spring, the Task Force is recommending a coordinated treatment is applied in commercial citrus orchards east and south of Bakersfield in late summer/early fall period to help mitigate the historical increase in fall ACP populations. The timing of the treatments should be mid-August through mid-September.
Eradication – no area-wide treatment
Eradication – no area-wide treatment
Eradication – no area-wide treatment
Southern California
Check back later for more details.
2023 ACP Treatment Schedule*
- Spring Treatment – May 15 – June 30
- Summer Treatment – July 1 - August 31
- Fall Treatment – October 1 – November 15
- Winter Treatment – November 16 – December 31
*Note: The dates above are for non-Pest Control District areas. If your operations are in a PCD, your PCD Manager will provide the ACP treatment schedule.
2023 ACP Treatment Schedule
- Spring Treatment – May 15 – June 30
- Summer Treatment – July 1 – August 31
- Fall Treatment – October 1 – November 15
- Winter Treatment – November 16 – December 31
Fall 2023:
- Pauma Valley and San Pasqual Valley - September 11-25
- Borrego - (Systemic) September 4-18, (Foliar) October 2-16
*Organic operations must do 2 applications within 10 days of each other with at least one application within the treatment window.