Butte County
University of California
Butte County

Walnut Notes

Issue Articles  
09/03/2019
  • Advisor Departing
  • Newsletters are going online!
  • 2019 IPM Breakfast Meetings
  • Post-Harvest Almond & Walnut IPM Workshop
  • Fall and Winter Walnut Management Considerations
  • Preparing for extreme events: Freeze and Fire
  • Increase Your Return on Investment with Post-Harvest Weed Scouting
9/3/19 Download
(1,744KB PDF)
06/13/2019
  • Advisor Retiring
  • Walnut Orchard Management – June through August 2019
  • IPM on a Budget – Cost Saving Strategies for Insect & Mite Management
  • Maximizing walnut quality to improve value in a low-price year
  • Should You Use Ethephon in a Lean Price Year?
  • Autumn Freeze Event and Spring Regrowth Update
  • 2019 IPM Breakfast Meetings

 

7/3/19 Download
(2,072KB PDF)
03/22/2019
  • 2019 UCCE Winter Walnut Meetings
  • Newsletters are going online!
  • 2019 IPM Breakfast Meetings
  • Orchard Management Considerations
  • Walnut Blight Management
  • Codling Moth IPM Program in a Lean Crop Year
  • Updated Walnut Cost Study
  • Start of irrigation in the spring
  • Tree and Vine Crop Herbicide Chart
3/22/19 Download
(1,837KB PDF)
12/20/2018
  • 2019 UCCE Winter Walnut Meetings
  • Newsletters are going online!
  • 2019 IPM Breakfast Meetings
  • Growing the Valley Podcast
  • Scale Pests, NOW, and Flatheaded Borers
  • Cost and Expense Considerations in a Lean Price Year
  • Tracking Winter Irrigation Needs
  • Updated Walnut Cost Study
1/2/19 Download
(1,610KB PDF)
08/28/2018
  • 2018 IPM Breakfast Meetings
  • 3rd Annual Harvest IPM Workshop
  • Newsletters are going online!
  • 2018 Advances in Walnut Production Short Course
  • 2019 UCCE Winter Walnut Meetings
  • Fall Orchard Management Considerations
  • Pruning with BOT Infections in Mind
  • Optimizing Your Orchard Spacing
  • Impacts and Recovery on Walnuts from 2017 Flooding
8/28/18 Download
(2,726KB PDF)
06/05/2018
  • 2018 IPM Breakfast Meetings
  • Walnut Orchard Management
  • Early Walnut Tree Training
  • Leaf symptoms of overwatering walnut trees
  • Early Walnut Tree Training: How to Handle Different Nursery Products and How to Use a Pressure Chamber for Irrigation Scheduling Hands-on Workshop
6/20/18 Download
(1,945KB PDF)
03/12/2018
  • 2018 IPM Breakfast Meetings 
  • Orchard Management Considerations 
  • A New Tool in the Fight Against Blight 
  • 2018 Winter and Early Season Irrigation 
  • 2017 Flood Damaged Trees - Research Results 
  • Tree and Vine Crop Herbicide Chart
3/26/18 Download
(1,805KB PDF)
09/06/2017
  • 2018 UCCE Winter Walnut Meeting
  • Upcoming IPM Breakfast Meetings
  • Fall Walnut Orchard Considerations
  • Website Resource
  • End of Season Flooded Orchard Damage Update
  • Considerations for Replanting a Walnut Orchard
  • Biofumigation Basics
  • New Farm Advisor Introduction
11/7/19 Download
(1,712KB PDF)
07/20/2017
  • New Farm Advisor Introduction
  •  Insect and Mite Updates - 2017
  •  Flooded Orchard Damage Update and Management Considerations
  •  In-Season Walnut Production Considerations
11/7/19 Download
(2,390KB PDF)
04/04/2017
  • Walnut Blight Management 
  • Flooded Orchards: What To Do 
  • Monitoring Codling Moth In and Near Mating Disruption Orchards 
  • IPM Breakfast Meetings Announcement 
  • Managing Bot Canker & Blight: Research Updates 
  • Orchard Management Considerations: Budbreak to Early Summer 
  • Field Meeting Announcements
3/26/18 Download
(2,020KB PDF)
01/03/2017
  • NOW Update 
  • New: Monthly IPM Breakfast Meetings 
  • 2017 UCCE Walnut Meetings 
  • Agenda: Butte/Glenn County Almond & Walnut Day 
  • Counting Winter Chill
3/26/18 Download
(970KB PDF)
07/28/2016
  • Walnut Husk Fly Update 2016 
  • Tipping the Scales to Favor Walnut Quality 
  • Summary of WHF Efficacy Data 
  • Selecting the Right Clonal Rootstock for Managing Soil and Pest Problems 
  • In-Season Walnut Production Considerations
3/26/18 Download
(1,415KB PDF)
03/22/2016
  • When to Begin the Irrigation Season 
  • The Latest on Managing Bot Canker and Blight - 2015 Research Updates 
  • New Walnut Variety ‘Durham’ Released 
  • Orchard Management Considerations: Delayed Dormant through Early Summer 
  • Tree and Vine Crop Herbicide Chart
3/26/18 Download
(1,476KB PDF)
01/20/2016
  • Key to Navel Orangeworm Management - NOW is the Time 
  • Pruning Under the Threat of Bot 
  • New Walnut Cost Study 
  • Training Young Walnut Trees: Minimum Pruning vs. No Pruning Compared 
  • Upcoming UC Walnut Meetings
3/26/18 Download
(1,104KB PDF)
08/14/2015
  • Navel Orangeworm in Walnuts 
  • Using Ethephon for Earlier Harvest 
  • Preparing Young Walnut Trees for Winter 
  • Late Summer and Fall Orchard Management Considerations
3/26/18 Download
(1,320KB PDF)
03/16/2015
  • Advances in Walnut Production Course
  • Walnut Orchard IPM Activities
  • Walnut Blight Management
  • Preventing Walnut Scale and Botryosphaeria Canker and Blight
3/26/18 Download
(2,050KB PDF)
09/22/2014
  • New UC Walnut Budding, Grafting, and Planting Video Released
  • Fall Orchard Management Considerations 
  • Black Mushy Walnut Hulls - Possible Causes 
  • Orchard Removal and Site Preparation for Walnuts 
  • How to Avoid Freeze Damage in Young Walnut Trees
3/26/18 Download
(963KB PDF)
01/03/2015
  • Butte & Glenn County Walnut Day Meeting Agenda 
  • Walnut Orchards Planted in 2014 - What to do now? 
  • Walnut Year-Round IPM Plan and Winter Orchard Pest Management Activities 
  • Save the Date - Upcoming Walnut Meetings
3/26/18 Download
(1,196KB PDF)
07/01/2014
  • New IPM Advisor Introduction
  • Advisor Retirement – Thanks!
  • New Farm Advisor Introduction 
  • Scale Identification and Lifecycles in Walnut Orchards ?Walnut Husk Fly Trap and Low Volume Spray Study Update
  • Irrigation Management Tools for Developing Walnut Trees
3/26/18 Download
(948KB PDF)
04/08/2014
  • California Walnut Research: moving the industry forward
  • New Farm Advisor introduction
  • Understanding and managing Botryosphaeria and Phomopsis canker & blight in walnut
  • Watch for early insect activity
  • Perspective on trends in orchard spacing, pruning, and potential disease 
  • Springtime recovery from winter freeze damage
3/26/18 Download
(514KB PDF)
07/09/2013
  • Irrigation management tools for developing walnut trees
  • Walnut husk fly trap study
  • Ethephon use considerations in the Sacramento Valley

                     

7/9/13 Download
(1,021KB PDF)
03/22/2013
  • 2013 Walnut Blight Management
  • Spacing Walnuts for Optimum Light Interception & Production
  • Guidelines for Handling Potted Walnut Clonal Rootstock Plants
  • New Walnut Variety "Solano" Released
  • Save The Date: Walnut Husk Fly Monitoring & Control Field Meeting
3/22/13 Download
(1,241KB PDF)
10/12/2012
  • Guidelines for handling and planting bareroot walnut nursery trees
  • Orchard removal and site preparation for walnut planting
  • Diagnosing and managing branch wilt disease
  • Management of first year walnut trees in fall and spring
  • Points to consider in the prevention of crown gall
10/12/12 Download
(705KB DOCX)
07/12/2012
  • 2012 walnut blight
  • New walnut cost study for the Sacramento Valley
  • Advisor retirement and new position proposals
  • Anthracnose, Botryosphaeria, and Phomopsis in walnut -- updates
  • Orchard management impacts on walnut quality
7/11/12 Download
(689KB PDF)
02/23/2012
  • Walnut blight management
  • Training and pruning young walnut trees tools for weed management decisions in orchard crops
  • Walnut Pruning Field Meeting- March 6th, Arbuckle
  • Mobil Irrigation Lab
2/23/12 Download
(4,064KB PDF)
06/01/2010
  • Codling moth management
  • Orchard management impacts on quality 
  • 'Ivanhoe' early harvesting cultivar & 'Ivanhoe' local observations 
  • Botryosphaeria and Phomopsis cankers 
  • Walnut Husk Fly Field Meeting June 9th 
  • Walnut Dehydrator Workshop, June 28th
6/1/10 Download
(PDF)
03/22/2010
  • Walnut Research Reports are Available On-line 
  • New Cost Study on Hulling and Drying Walnuts and Dehydrator Workshop 
  • Comparing Retain® and Hold™ for Reducing PFA and Increasing Yield in ‘Serr’ Walnuts 
  • Managing Phytophthora in Walnuts
  • Winter Freeze Damage - Spring Recovery
  • Spring Frost? 
  • Walnut Blight Management Update - 2010 Growing Season 
  • Walnut Blight Control Experience over the Last 20 years
3/22/10 Download
(PDF)
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