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California Oak Mortality Task Force - Virtual Annual Meetings - September 21-23, 2021


September 21 – 23, 2021; 1 pm, PDT each day

Registration fee: $0

All are welcome to attend each day, but each meeting is targeted to distinct audiences as follows:

  • Tuesday, September 21, 2021: Day 1. Short presentations on sudden oak death, Bay Area tree decline, review of other plant health concerns. (1.5 hours)
  • Wednesday, September 22, 2021: Day 2. California Oak Mortality Task Force Executive Committee Meeting (Round robin, discussion, etc.). Focus on sudden oak death, Phytophthora ramorum (1.5 hours)
  • Thursday, September 23, 2021: Day 3. CALPhytos meeting (Round robin, discussion, etc.). Presentations and discussion concerning Phytophthoras in restoration areas and natural areas. (2 hours)

Draft agendas for each day are below. Scroll to the bottom for the registration form.


Draft Agenda for Day 1. 1 pm to 2:20 pm.

Moderator: Janice Alexander, UC Cooperative Extension, Marin Co.

Welcome – Review schedule for next few days – Janice Alexander, UC CE Marin Co.  Objectives.  Different format & topics for each meeting.

Detection of Phytophthora ramorum NA2 lineage in Oregon north of the quarantine area – Sarah Navarro, US Forest Service, Pacific Northwest Region, Forest Health Protection, Portland

Status of Bay Are Tree Decline. Associated fungi on acacia, eucalyptus & other species. Climatic triggers  and fungal involvement – Matteo Garbelotto, UC Berkeley

Update on other, potentially drought-related problems with oaks throughout California--scale insects, Diplodia, Tubakia, MOB, etc. – Chris Lee, CAL FIRE, COMTF Chairperson  

Q &A. Comments.

Draft Agenda for Day 2. Topics for California Oak Mortality Task Force Executive Committee Meeting. 1 pm to 2:30 pm.

Moderator: Chris Lee, CAL Fire, COMTF Chairperson

SOD activities in CA - A quick review (5 min each.) 

River baiting in CA – Rizzo, UC-Davis lab

Garbelotto lab – SOD Blitz update


Yana Valachovic, UCCE Humboldt & Del Norte Counties.

Cobb lab – CAL POLY, SLO

Nurseries – Carolyn Lambert & Kristina Weber – P. ramorum nursery update


Draft Agenda for Day 3. CalPhytos – Other Phytophthoras. 1 pm to 3 pm.

Welcome. Meeting objectives. Q &A process, etc.  

Management and research progress

Cleanliness is next to godliness: Progress on Phytophthora prevention on lavender and other ornamentals in the Southeastern U.S. – Steve Jeffers and Linus Schmitz, Clemson Univ.

Results of Midpeninsula Regional Open Space District Phytophthora study – Ebba Peterson, Oregon State Univ.  

How Midpeninsula Regional Open Space District is managing Phytophthoras and other pests – Amanda Mills and Coty Sifuentes-Winter, MROSD

Hot topics: heat treatment alternatives for eliminating Phytophthora in nurseries and field sites – Ted Swiecki, Phytosphere Research

Phytophthora detection in nurseries: Results from various techniques. - Johanna Del Castillo, UC Davis   

Round robin – How are things going? 

Pre-delivery Phytophthora monitoring for restoration plants – Janell Hillman, Santa Clara Valley Water District

AIR - Accreditation update. Plant Health Progress article and results of leachate baiting test. Ted Swiecki, Phytosphere Research     

Proposals and issues

Proposed restoration plant health program at UC Davis   

Problem statement for discussion: Phytophthora introductions into wildlands via non-restoration planting activities? Recreation (biking,  horseback riding, ATVs, etc). What is our message?