Cooperative Extension, Sutter-Yuba Counties
University of California
Cooperative Extension, Sutter-Yuba Counties

Sacramento Valley Walnut News

A newsletter published by the Sacramento Valley Walnut Farm Advisors and submitted by Janine Hasey, Walnut Farm Advisor for Sutter and Yuba Counties.

Issues Articles Type Date Added
Sacramento Valley Walnut News - Summer 2017

Upcoming IPM Breakfast Meetings

Farm Advisor Introduction

In-Season Walnut Production Considerations

Insect and Mite Updates - 2017

Flooded Orchard Damage Update and Management Considerations

Website Resource

PDF 6/16/17
Sacramento Valley Walnut News - Spring 2017
  • Orchard Management Considerations: Budbreak through Early Summer
  • Walnut Blight Management
  • Monitoring Codling Moth in and Near Mating Disruption Orchards
  • Lastes on Managing Bot Canker and Blight in Walnut - 2016 Research Updates
  • Flooded Orchards: Past Experiences and What to Do in 2017
  • Upcoming Meetings
  • 2017 Herbicide Chart

PDF 4/4/17
Sacramento Valley Walnut News - Winter, 2016/2017
  • 2017 UCCE Walnut Meetings
  • New Monthly IPM Breakfast Meetings
  • Sacramento Valley Orchard Source Website
  • Counting Winter Chill
  • NOW Update

Upcoming Walnut Meetings:

  1. February 21st - Sutter-Yuba-Colusa Walnut Day
  2. February 28th (AM) - Walnut (9th leaf) Pruning systems compared in No Pruning long term study & Bot pruning wound study Field Meeting
  3. February 28th (PM) - Walnut (2nd leaf & 4th leaf) No Pruning/Variation of No Pruning/Pruning Grower Comparison Field Meeting
PDF 12/28/16
Sacramento Valley Walnut News - Summer 2016
  • New Website Resource for Sac Valley Tree Crop Production
  • In-Season Walnut Production Considerations
  • Walnut Husk Fly Update 2016
  • Tipping the Scales to Favor Walnut Quality
  • Selecting the Right Clonal Rootstock for Managing Soil and Pest Problems
  • Are you Pushing Out a Chandler Orchard in the Next Year? Call Kat!
PDF 6/24/16
Sacramento Valley Walnut News - Spring 2016
  • Orchard Management Considerations: Delayed Dormant through Early Summer
  • The Latest on Managing Bot Canker and Blight - 2015 Research Updates
  • Walnuts: When to Begin the Irrigation Season
  • New walnut variety 'Durham' released
  • Tree and Vine Crop Herbicide Chart
PDF 3/23/16
Sacramento Valley Walnut News - Winter 2016
  • 2016 UCCE Walnut Meetings
  • Pruning Under the Threat of Bot
  • Key to Navel Orangeworm Management - NOW is the Time
  • Training Young Walnut Trees: Minimum Pruning vs. No Pruning Compared
  • New Walnut Cost Study

PDF 1/4/16
Sacramento Valley Walnut News - Late Summer/Fall 2015
  • Advances in Walnut Production Short Course
  • Late Summer and Fall Orchard Management Considerations
  • Using Ethephon for Earlier Harvest
  • Naval Orangeworm in Walnuts
  • Preparing Young Walnut Trees for Winter
PDF 8/12/15
Sacramento Valley Walnut News - Spring, 2015
  • Advances in Walnut Production Short Course
  • Walnut Orchard IPM Activities
  • Walnut Blight Management
  • Preventing Walnut scale and Botryosphaeria canker and blight
  • Herbicide Chart
PDF 3/6/15
Sacramento Valley Walnut News - Winter 2014
  • Upcoming UCCE Meetings
  • Walnut Year-Round IPM Plan and Winter Orchard Pest Management Activities
  • Walnut Orchards Planted in 2014 - What to do NOW?
  • Pistachio meeting information

SAVE THE DATES:

February 25th Sutter-Yuba-Colusa-Yolo-Solano-Sacramento Walnut Day
March 3rd Walnut (7 year olds) No Pruning/Pruning Comparison Field Meeting
March 3rd Walnut (2 year olds) No Pruning/Pruning Comparison Field Meeting

 UC ANR

PDF 12/23/14
Sacramento Valley Walnut News - Fall 2014
  • Save the Date: Sutter-Yuba-Colusa 2015 Walnut Day, February 25th
  • Fall Walnut Orchard Management Considerations
  • How to Avoid Freeze Damage in Young Walnut Trees
  • Black Mushy Walnut Hulls - Possible Causes
  • Orchard Removal and Site Preparation for Walnut Planting
  • New UC Walnut Budding, Grafting and Planting Video Released
  • Sutter and Yuba County Walnut Theft Ordinance
  • Pistachio Meeting Information
PDF 9/16/14
Sacramento Valley Walnut News - Summer 2014
  • New IPM Advisor
  • New Farm Advisor
  • Farm Advisor Retirement
  • Scale Identification and Lifecycles in Walnut Orchards
  • Walnut Husk Fly Trap and Low Volume Spray Study Update
  • Irrigation Management Tools for Developing Walnut Trees
PDF 7/1/14
Sacramento Valley Walnut News - Spring 2014
  • California Walnut Research: moving the industry forward
  • New Farm Advisor Introduction
  • Understanding and Managing Botryosphaeria and Phomopsis Canker and Blight in Walnut
  • Watch for Early Insect Activity
  • Perspective on trends in orchard spacing, pruning and potential disease
  • Springtime Recovery from Winter Freeze Damage
  • Save the Date: Irrigation Scheduling & Drought Management Strategies meeting
PDF 4/8/14
Sacramento Valley Walnut News - Winter 2013/2014
  • 2014 Walnut Meetings
  • Managing Ground Squirrels and Pocket Gophers in Orchards
  • Winter Cold and Irrigation During Drought
  • Training Young Walnut Trees: Minimum Pruning vs. No Pruning Compared
  • Nitrogen Management Planning
PDF 12/2/13
Sacramento Valley Walnut News - Summer/Fall 2013
  • Irrigation Management Tools for Developing Walnut Trees
  • Walnut Husk Fly Trap Study
  • Howard Nut Drop
  • Ethephon Use Considerations in the Sacramento Valley
PDF 7/11/13
Sacramento Valley Walnut News - Spring 2013
  • 2013 Walnut Blight Management
  • Spacing Walnuts for Optimum Light Interception and Production
  • Guidelines for Handling Potted Walnut Clonal Rootstock Plants
  • New Walnut Variety 'Solano' Released
  • Walnut Hush Fly Meeting
PDF 3/25/13
2013 Walnut Trade Show

Walnut Trade Show

Monday, January 14th 2013

Yuba-Sutter Fairgrounds Main Exhibit Hall, 442 Franklin Avenue Yuba City, CA

Educational Seminars, Equipment, Technology, and Innovations

(1 hour of DPR CE credit, approved)

PDF 1/11/13
Sacramento Valley Walnut News - Fall/Winter 2012
  • Management of First Year Walnut Trees in Fall and Spring
  • Orchard Removal and Site Preparation for Walnut Planting
  • Points to Consider in the Prevention of Crown Gall
  • Diagnosing and Managing Branch Wilt Disease
  • Guidelines for Handling and Planting Bareroot Walnut Nursery Trees
  • UCCE Online Giving
  • Newsletter Delivery
  • UC Publications
PDF 9/25/12
Sacramento Valley Walnut News - Summer 2012
  • Anthracnose, Botryosphaeria, and Phomopsis in Walnut - Updates
  • 2012 Walnut Blight
  • Orchard Management Impacts on Walnut Quality
  • New Walnut Costs Study for the Sacramento Valley
  • Advisor Retirement and New Position Proposals
  • New Sutter County CIMIS Weather Station
  • Newsletter Delivery
PDF 7/13/12
Sacramento Valley Walnut News - Spring 2012
  • Walnut Blight Management
  • Training and Pruning Young Walnut Trees
  • Description of the Three Training/Pruning Styles Compared in the Chandler Hedgerow Trial
  • Tools for Weed Management Decisions in Orchard Crops
  • California Herbicide Registration on Horticulture Tree and Vine Crops
  • Walnut Pruning Field Meeting
PDF 2/27/12
Sacramento Valley Walnut News - Fall 2011
  • The Science (and Art) of Ethephon Use on Walnut
  • Additional Ethephon Use Considerations in the Sacramento Valley
  • Considerations When Replanting Individual Trees in a Walnut Orchard
  • How Traps Are Used to Monitor Walnut Husk Fly
  • Walnut Huller and Dehydrator Food Safety Good manufacturing Practices (GMP) Checklist
  • Useful Websites Related to Walnut Production
PDF 9/16/11
Sacramento Valley Walnut News - Summer 2011
  • Howard Nut Drop
  • Codling Moth - The 2011 Season
  • Movento ® (Spirotetramat) as a Nematicide
  • Update on New Walnut Varieties: Forde, Gillet, and Sexton
  • Preparing Young Walnut Trees for Winter
PDF 8/3/11
Spring 2011 Sacramento Valley Walnut News - Gopher & Ground Squirrel Control Field Meeting. - Orchard Floor Management Field Day. - Walnut Blight Management Using Bud Population Information. - Section 18 for Manzate Flowable and Pro-Stick Fungicide. - Incidents of Walnut Scale are Increasing. - Clonal Paradox Walnut Rootstocks and Pest Interactions Update. - Ivanhoe Walnut Blight Update. - Frost/Weather Forecasting Resources. - Early Season Ground Squirrel Management. - Final Chilling Hours. - Weed Gallery Website. PDF 3/18/11
Fall 2010 Sacramento Valley Walnut News Using Ethephon to Accelerate and Enhance Harvest in 2010 Preparing Young Walnut Trees for Winter Controlling Glyphosate-Resistant Weeds in Orchards with Rely Potassium Deficiency in Walnuts Common Causes and Photos of Yellowing Walnut Trees PDF 9/8/10
Summer 2010 Sacramento Valley Walnut News Walnut Husk Fly Meeting Orchard Management Impacts on Walnut Quality Codling Moth Management New Early Harvesting Cultivar 'Ivanhoe' Released Ivanhoe Local Observations Botryosphaeria and Phomopsis Cankers of Walnuts in California 2010 Walnut Dehydrator Workshops PDF 6/3/10
Spring 2010 Sacramento Valley Walnut News * Comparing Retain® and Hold™ for Reducing PFA and Increasing Yield in 'Serr' Walnut * Managing Phytophthora in Walnuts * Winter Freeze Damange - Spring Recovery * Spring Frost? * Walnut Blight Management Update * New Cost Study on Hulling and Drying Walnuts and Dehydrator Workshop * Walnut Research Reports are Available On-line * Walnut Blight Control Experience over the last 20 years PDF 3/23/10
2009 July Summer_Fall Sac Valley Walnut News *Field Meeting August 6th: Managing Codling Moth in Walnuts Using Pheromone Mating Disruption Continue Watching for Aphid and Spider Mite Infestations Crown Gall Treatment Fast Facts about Ethephon Use on Walnuts Best Management of Replant Alternative Fumigants PDF 7/24/09
Spring 2009 Sacramento Valley Walnut News Soil Testing and Analysis: What to Expect in the Report Kaolin Particle Film Application for Walnut "Good Neighbor Program" Compatibility between Codling Moth Control Methods Walnut Scale PDF 5/21/09
Winter 2008 Sacramento Valley Walnut News Managing Walnuts for Cold Temperatures Winter Irrigation During Drought Guidelines for Planting Walnuts Pruning Tips for One and Two Year Old Walnut Trees Manex-The Rest of the Story 2009 Grower Meeting Schedule PDF 12/10/08
Fall 2008 Sacramento Valley Walnut News Managing Walnut Harvest for Quality Site Preparation for Walnut Planting Fumigatrion Guidelines Planting a Successful Annual Reseeding Cover Crop Why Are Some Individual Young Walnut Trees Turning Yellow and Not Growing? Upcoming Field Meeting: Cover Crop Seeding Demonstration PDF 8/15/08
Summer 2008 Sacramento Valley Walnut News Codling Moth Management Walnut Husk Fly Biology, Monitoring and Spray Timing Be Watching for Spider Mites or Aphid Infestations July-Time for Leaf Analysis Walnut Grower Feferendum Funding Available for Illegal Dumping on Sutter County Farms Watershed Coalition Codling Moth Management in Walnut Meeting PDF 8/15/08
Spring 2008 Sacramento Valley Walnut News New Walnut Rootstocks and Pest Interac tions Walnut Blight Control Spring Fertilization for Walnuts Guidelines for Care of Young Walnuts from Planting through the First Season Managing Pistillate Flower Abortion (PFA) in Walnuts with the Use of Retain PDF 8/15/08
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