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Sutter-Yuba-Colusa Walnut Day

February 22 @ 1:00 pm - 4:30 pm


Walnut Day
Thursday, February 22, 2018, 1:00pm – 4:30pm
Veterans Memorial Hall, 1425 Veteran’s Memorial Circle, Yuba City

12:00 – Registration
Please register by 12:55pm. Allow time to park.

12:55 – WelcomeJanine Hasey, UCCE Farm Advisor, Sutter/Yuba/Colusa Counties

– 2018 Laws and Regulations update, Sean Nelson, Ag Biologist, Sutter County Agricultural Dept.
– Crown gall management strategies/Development of disease resistant rootstocks, Dan Kluepfel, USDA/ARS Plant Pathologist, UC Davis
– Panel: How did the 2017 flooding impact walnut trees?
Janine Hasey: Background on local flooding/seepage
Astrid Volder, Plant Sciences, UC Davis: Root physiology and response to waterlogging
Greg Browne, USDA/ARS Plant Pathologist, UC Davis: Water sampling and aerial
Phytophthora and management
Janine Hasey: Survival, recovery, & minimizing losses in 2018
Bruce Lampinen: Irrigation management under flood/high water table conditions
Presentations and Q & A session

2:35pm Refreshments Courtesy of Crain Walnut Shelling, Inc.

2:55 pm
– Understanding walnut tree growth characteristics, Bruce Lampinen, UCCE Walnut Specialist, UC Davis
– Panel: Status and impact of thousand cankers disease (TCD) and walnut twig beetle (WTB)
Rick Bostock, Plant Pathologist, UC Davis: TCD
Steve Seybold, Research Entomologist, USDA Forest Service, UC Davis: WTB
Presentations and Q & A session

Industry and International Update
– The California Walnut Board & Commission – Today, Tomorrow and Years to Come
Jennifer Williams, Marketing Director
Claire Lee, Assistant Marketing Director, International
Abhi Kulkarni, Assistant Director, Technical Support
– Thoughts on the VIII International Walnut Symposium and Chilean walnut industry,
Katherine Jarvis-Shean, UCCE Farm Advisor, Solano/Yolo/Sacramento Counties, 
Janine Hasey

4:30 p.m. Adjourn

Sponsored by: University of California Cooperative Extension, Sutter/Yuba/Colusa Counties
Co-Sponsored by: Sutter County Agricultural Department

2.0 hours PCA credit (.5 is Laws) approved and 2.5 hours CCA credit pending

Parking at Veterans Hall: Parking is limited at Veteran’s Hall. There is spillover parking on
Memorial Circle and street parking on Poole. Please do not park in patient parking at Health Dept.


February 22
1:00 pm - 4:30 pm


Janine Hasey
jkhasey AT ucanr.edu


Veteran’s Hall
1425 Veterans Memorial Cir
Yuba City, CA 95993 United States
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