Upcoming ACP-HLB Updates

May 15, 2019

Task Force to host Spring 2019 ACP-HLB update


Members of the Ventura County citrus community are invited to a workshop to review the most recent rounds of area-wide treatment, learn about plans for future treatment cycles, and hear about the latest research into psyllid suppression and disease management strategies.

The workshop will be from 9:30 to 11:30 a.m. on Thursday, May 23, at the Museum of Ventura County, 100 E. Main St., Ventura. The event is free, but advance registration is required. To reserve a spot, register online at https://acp-hlb2019.eventbrite.com.


9:30 a.m.

Welcome, and update on status of HLB in California, including possible hot spots in Ventura County and quarantine implications for citrus operations:

Leslie Leavens, chair, Ventura County ACP-HLB Task Force.

10 a.m.

Scientific rationale behind voluntary grower action plan for HLB confirmations in commercial groves:

Neil McRoberts, western regional director, National Plant Diagnostic Network, and associate professor of plant pathology, UC Davis.

10:30 a.m. 

Managing Asian citrus psyllid and HLB in Southern California commercial groves:

Beth Grafton-Cardwell, IPM Specialist and Research Entomologist, University of California-Riverside, and Director of Lindcove Research and Extension Center.

11 a.m. 

Area-wide treatment completion rates for 2018-2019, and treatment schedule for 2019-2020:

John Krist, CEO, Farm Bureau of Ventura County.

11:15 a.m.

Audience Q&A

11:30 a.m.


Click here to download a copy of the treatment schedule for 2019-2020.


New Huanglongbing Detection in Riverside


A residential citrus tree in the city of Riverside has tested positive for Huanglongbing (HLB). The citrus tree was located on a previous detection site from 2017. This is the first HLB detection in Riverside County since 2017. The California Department of Food and Agriculture is in the process of removing the HLB-positive tree.

In addition to removing the HLB-positive tree, CDFA has pulled samples from all other citrus trees on the property for testing and is in the process of beginning treatment of all host plants within 400 meters of the detection site.

Since this new detection occurred on the same property as a previous find, there will not be a change to the current HLB quarantine area or Asian citrus psyllid quarantine zones.

Citrus growers and pest control advisers in Riverside County should reach out to the county's Grower Liaison Alan Washburn at alan@washburnandsons.com or 951-683-2392 with questions and to seek recommendations on how to protect their orchards.


By Ben Faber
Author - Advisor

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