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Sutter-Yuba-Colusa Walnut Day

February 22, 2018 @ 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, 2018
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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