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San Joaquin Pomologist Newsletter

Issues Articles Type Date Added
2022 Quad-County Walnut Day

University of California Cooperative Extension

51st Quad-County Walnut Institute

February 7, 2022, 7:30-12:00 PM (noon)

Robert J. Cabral Agricultural Center, Assembly Rm. 1-3 2101 E. Earhart Ave., Stockton, CA 95206-3949


PDF 1/11/22
Register for Next Thursday's UCCE Walnut Freeze Webinar Panel: Experiences & Lessons Learned

There's still time to sign up for Sacramento Valley Tree Crop IPM Webinar and the walnut freeze panel!

PDF 11/3/21
Register for Next Thursday's UCCE Walnut Freeze Webinar Panel: Experiences & Lessons Learned

There's still time to sign up for Sacramento Valley Tree Crop IPM Webinar and the walnut freeze panel!

PDF 11/3/21
Walnut Freeze damage Survey

UCCE Walnut Advisors are interested in learning more about freeze damage. If you experienced freeze damage over the past few years and have a minute to provide us feedback on your situation, please follow this link:



PDF 10/8/21
2021 Walnut Freeze: Reporting the Damage

Please see the link for information on "2021 Walnut Freeze: Reporting the Damage."

PDF 6/30/21
Establishing Nut Crop Orchards Webinar Series

This is a Summer 2020 Webinar Series. Please see the flyer for details.

Register online at:


PDF 7/20/20
50th Quad-County Walnut Institute PDF 2/10/20
2020 CA Cherry Research Review Meeting Notice PDF 1/15/20
49th Quad-County Walnut Institute Meeting Notice

Day: Tuesday, February 5, 2019

Time: 7:30 a.m. to 12:00 p.m.

Location: UCCE Stanislaus County

              3800 Cornucopia Way 

              Harvest Hall

              Modesto, CA. 95358

PDF 1/16/19
Tree Fruit Orchard Tour

High-Efficiency Tree Architecture and Harvest Aids for Cherries, Pears, and Apples.

Tuesday, June 26, 2018,  8:30 am to 3:45 pm

Walnut Grove and Linden, CA

PDF 5/24/18
SJ Pomologist Walnut Pruning Trial Field Day DOC 5/8/18
48th Quad County Walnut Institute

Date Correction:  Monday, March 5, 2018

Robert J. Cabral Ag Center, San Joaquin County UCCE

2101 E. Earhart Ave., Stockton, CA 95206

PDF 2/13/18
CA Cherry Research Review 2018 PDF 12/18/17
47th Quad-County Walnut Institute
  • Navel Orangeworm and Codling Moth: 2016-Trapping Date and Control Options for 2017
  • Botryosphaeria and Phomopsis management within walnut orchards: cultural practices, spray timings, and product selection
  • Report of the CA Walnut Board and Commission
  • Update on Blackline Tolerant rootstocks
  • Managing water infiltration issues within walnut orchards
  • New UC Walnut Varieties for CA
PDF 2/10/17
California Cherry Research Review 2017
  • Classical Biological control of Spotted Wing Drosophila
  • Developing attractive baits for Drosophila suzukii
  • Management and epidemiology of pre- and post-harvest foliar and fruit diseases of sweet cherry 
  • Engineered transgenic Drosophila suzukii for wild population suppression and eradication: Production, performance assessment, and effective wild releases
  • 2016 California Cherry Board Update
  • Oviposition deterrents and insecticides for Spotted Wing Drosophila control in cherry
  • San Jose Scale control in cherries
  • Better understanding of sweet cherry post-harvest cracking in California and potential strategies to reduce its incidence
  • Update: 2016/2017 chill accumulation
  • Existing approaches, challenges, and possibilities for mechanical tree fruit and sweet cherry harvesting
PDF 12/13/16
Self-assessment Workbook for the Production of Cherries in California

The self-assessment workbook is a tool a cherry grower can use to document the practices and processes they are using in their orchards, learn about others that may improve their farming operations, and track changes over time. 

PDF 2/4/16
CA Cherry Research Review 2016 PDF 12/28/15
Walnut Production Course 2015 DOCX 4/3/15
California Cherry Research Review 2015 PDF 12/11/14
Field Meeting: Identifying and Managing Botryosphaeria Dieback in Walnuts PDF 7/28/14
Walnut Pruning Trial Field Day

Tuesday, May 13th, 2014

Registration at 9:30 
Program 10:00 a.m. - 12:00 p.m.


View or print the newsletter for a map to the Field Day.

PDF 5/6/14
2014 Quad County Walnut Institute PDF 2/11/14
Pomegranate Workshop - Meeting Notice

When:   Thursday, April 4, 2013

Where:  Kearney Agricultural Research & Extension Center
             9240 South Riverbend Avenue
             Parlier, CA 93648

RSVP to rhmolinar@ucanr.edu


PDF 3/20/13
2013 Quad-County Walnut Institute

Thursday, February 14, 2013

8 am- 12:15 pm

Harvest Hall, Stanislaus Ag Center, Modesto

PDF 1/23/13
San Joaquin Pomologist Sweet Cherry Field Meeting

Sweet Cherry Rootstock and Training System Trial Field Meeting
Wednesday, May 16, 2012
9:00 am - 10:30 am
12845 River Road, Courtland, CA 95615 

PDF 5/4/12
Walnut Irrigation Workshop

Tuesday, March 20, 2012, 12:30 pm to 5:00 pm
SJC Robert J. Cabral Ag Center

The goals of this intensive workshop is to give participants practical information on using standard and new irrigation technologies to improve walnut orchard production and quality while maintaining orchard longevity.

PDF 2/24/12
Interactive Short Course

Enhancing Pest Management in Orchards by Incorporating Biological Control
February 22-23, 2012
San Joaquin County Robert J. Cabral Agricultural Center
2101 E. Earhart Ave., Stockton, CA  95206

PDF 1/19/12
Biology & Management of SWD and OFF in Cherries

A workshop for pest control advisors and consultants.

Tuesday, February 14, 2012
10 am - 3 pm
San Joaquin County Robert J. Cabral Ag Center
2101 E. Earhart Ave., Stockton, CA  95206

PDF 1/19/12
CA Cherry Research Review 2012

Tuesday, January 24, 2012
San Joaquin County Robert J. Cabral Ag Center
2101 E. Earhart Ave., Stockton, CA 95206

PDF 1/6/12
Quad-County Walnut Institute 2012

Thursday, February 16, 2012.
Robert J. Cabral San Joaquin County Agricultural Center, Stockton, CA

PDF 12/21/11
Walnut Dehydrator Workshops - 2010 June 28 in Chico June 29 in Modesto PDF 7/26/10
40th Annual Tri-County Walnut Institute Monday, February 8, 2010 PDF 7/26/10
California Cherry Research Review January 19, 2010 PDF 7/26/10
North San Joaquin Valley Cling Peach Day December 3, 2009 at the Stanislaus County Ag Center PDF 7/26/10
Cherry Vinegar Fly Informational Meeting Wednesday, July 8, 2009 PDF 7/26/10
39th Annual Tri-County Walnut Institute Tuesday, March 17, 2009 PDF 7/26/10
Walnut Dehydrator Workshop Wednesday, April 8, 2009 PDF 7/26/10
California Cherry Research Review January 27, 2009 PDF 7/26/10
Making Pheromone Mating Disruption Work in Walnuts Friday, April 25, 2008 PDF 7/26/10
38th Annual Tri-County Walnut Institute February 28, 2008 PDF 7/26/10
North SJ Valley Cling Peach Seminar December 12, 2006 in Modesto, CA PDF 7/26/10
Oil Olive Production for the Northern San Joaquin Valley Thursday, December 7, 2006 UC Cooperative Extension, 420 S. Wilson Way, Stockton PDF 7/26/10
Spring 2006 Cling Peach Field Day May 18, 2006 PDF 7/26/10
36th Annual Tri-County Walnut Institute Tuesday, March 7, 2006 PDF 7/26/10
2005 Walnut Orchard Brush Disposal Workshop Chip, Chop & Shred Event Thursday, Nov. 3, 2005 PDF 7/26/10
Beneficial Insects in Walnuts Field Day Thursday, June 23, 2005 PDF 7/26/10
35th Annual Tri-CountyWalnut Meeting Friday, March 25, 2005 PDF 7/26/10
North SJ Valley Cling Peach Seminar December 14, 2004 PDF 7/26/10
Field Demonstration - April 5, 2004 Cover Crops for Walnut Orchards PDF 7/26/10
March 2004 Silver Bullet for Serr Drop? Winter Chilling Recap What's This Discharge Waiver Thing, Anyway? Fungicide Efficacy & Treatment Timing for: Apple and Pear;Cherry; Peach and Nectarine PDF 7/26/10
Tri-County Walnut Institute March 9, 2004 PDF 7/26/10
Field Meeting - November 20, 2003 San Joaquin Valley Chip, Chop, Shred! Shredders - Start Your Engines!! PDF 7/26/10
September 2001 Getting Walnut trees Ready for Winter "Stay the Course" with Cherry Buckskin Disease Upcoming Events PDF 7/26/10