Stanislaus County
University of California
Stanislaus County

kari arnold bumper


Photo of Dr Kari L. Arnold
Dr Kari L. Arnold 
Title: Farm Advisor
Specialty: Walnuts, Cherries, Grapes and Apricots
University of California Cooperative Extension, Suite A. Corner of Service and Crows Landing
3800 Cornucopia Way
Suite A
Modesto, CA 95358
Phone: 209-525-6821

Kari Arnold joined UCCE as an area orchard and vineyard systems advisor in Stanislaus County on Nov. 1, 2017.

Prior to joining UCCE, Arnold was a postdoctoral researcher in the Department of Plant Pathology at UC Davis, where she participated in a statewide extension and outreach program involving viruses in grapevines and the certification program, collaborated with county viticulture advisors and industry leaders to facilitate grower workgroups for regional management of grapevine viruses, and provided presentations at grower meetings.

As a graduate student researcher from 2011 to October 2016, Arnold participated in individual grower meetings and surveys, facilitated and collaborated with a grower workgroup for areawide disease management in Napa vineyards, and conducted statistical characterization of spatial and temporal patterns of insect-vectored plant viruses. From 2009 to 2011, Arnold also worked as a staff research associate and nursery technician for Foundation Plant Services at UC Davis, where she provided employee training; worked on team oriented projects; provided tours, conducted virus indexing, and collected and analyzed data.

Arnold completed an M.S. and a Ph.D. in plant pathology from UC Davis and a B.S. in horticulture from the University of Nebraska – Lincoln.

Walnut News & Fruit For Thought Newsletter

Issue Articles Type Date Added
Advances in Walnut Production Short Course (193KB)

Good morning


The University of California Agriculture and Natural Resources and Cooperative Extension is pleased to announce the upcoming Walnut Production Short Course. Over the course of three days, you will learn the latest in research and information involving walnut culture and production. Please see the following link for more information and registration:


Thank you 


Kari Arnold

UCCE Area Orchard and Vineyard Systems, Stanislaus County

3800 Cornucopia Way, Suite A Modesto, CA 95358

Office: (209) 525-6800


PDF 9/18/18
2018 Western Pecan Production Short Course, hosted by New Mexico State University in Las Cruces, NM (706KB)

Short course features:

Three full days in the “classroom” with lectures to cover horticulture, pest control, economics, and related aspects of pecan production from start to finish, plus a full-day field trip to pecan farms.


Cost: $300 short course only, $400 short course and field trip

PDF 7/23/18
Tree Fruit Orchard Tour (513KB)

This tour will explore the use of harvest aids and mechanization for improving efficiency and reducing labor costs in tree fruit production. We will travel to several orchards to see and discuss trellis systems and platforms for harvesting and managing pear, cherry, and apple orchards. Researchers from Washington State University will share results of their work with harvest-assist machines and their effects on productivity, efficiency, and bruising. Researchers and growers will discuss lessons learned from trellis designs and spacing that facilitate mechanization and maximize efficiency.


Special Guests: Matt Whiting (WSU Extension Horticulturist) and Karen Lewis (WSU Tree Fruit Specialist) Organized by UC Cooperative Extension Funding: Calif. Apple Commission, Calif. Cherry Advisory Board, and Calif. Pear Advisory Board 

PDF 6/1/18
Walnut Pruning Trial Field Day (193KB)

Agenda for Walnut Pruning Trial Field Day

PDF 5/8/18
Walnut News & Fruit for Thought (1,831KB)

Spring Issue of Walnut, Grapes, Apricot, and Cherry news. 

PDF 4/13/18
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Stanislaus County
University of California Cooperative Extension
3800 Cornucopia Way, Ste. A
Modesto, CA 95358
Phone: (209) 525-6800
Fax: (209) 525-6840

Director: Roger Duncan
roger picture

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