Walnut Notes

Issues	Articles	Type	Date Added
Winter 2024 (423KB)	• Winter Walnut Management Resources • 2024 Meetings • Winter Chill, Dormancy and Walnut Management • Fungicide Efficacy	PDF	2/28/24
Fall 2023, Part 2 (474KB)	• Meeting Save the Dates • Trees-to- tomatoes • Walnut Variety Trial Introduction • New Advisor Introduction	PDF	9/25/23
Fall 2023, Part I (727KB)	• Fall Walnut Considerations • Minimize Potential Sudden Autumn Freeze Damage • Plant Cover Crops Now to Prepare for Another Wet Winter • “Field Visit: Nematode Management in Walnut” was held in Escalon, CA	PDF	9/25/23
Summer 2023 (415KB)	• New Summer Management Considerations • New Orchard Advisor!	PDF	9/25/23
Spring 2023 (1,536KB)	• New Orchard Advisor • Walnut Management Considerations • Healthy Orchards with a Careful Approach to Irrigation • Thinking About Skipping or Shorting Nitrogen This Year? • Prioritizing Sprays When You Can’t Afford Them All • Strategies for orchard weed management hard economic situations • Tree and Vine Crop Herbicide Chart	PDF	9/25/23
Winter 2023 (1,927KB)	• Walnut Winter Management Considerations • Vegetation for Infiltration • 2022 Walnut Crop Loss and Poor Nut Quality – What happened? • Winter Chill, Dormancy and Walnut Management • New Orchard Advisor • Follow us on Twitter!	PDF	9/25/23
Fall 2022 (3,157KB)	• Time for a Hard Look • Upcoming Orchard Meetings • Walnut Management Considerations • Six Steps to Prepare for the Next Sudden Autumn Freeze • New IPM advisor introduction • NOW pre & post-harvest • Follow us on Twitter!	PDF	9/25/23
Summer 2022 (2,090KB)	• Walnut Management Considerations • Mid to Late- season Drought Strategies for Walnut Orchards • Managing Mold in Walnut, 2022 Update • New Staff Research Associate • Follow us on Twitter! • Growing the Valley Podcast	PDF	9/25/23
Spring 2022 (2,146KB)	• Walnut Management Considerations • Walnut Blight Management Update • Selecting the Best Walnut Rootstock for Your Situation • Walnut fungicide and bactericide efficacy tables • Follow us on Twitter! • Tree and Vine Crop Herbicide Chart	PDF	9/25/23
Fall, 2021 (1,663KB)	Walnut Freeze Damage Survey Sacramento Valley Tree Crop IPM Webinar UCCE Walnut Freeze Webinar Orchard Management Considerations Five Steps to Prepare for the Next Sudden Autumn Freeze Fall Walnut IPM- Looking Back and Looking Forward New Advisor Introduction Announcing the UCCE Central Valley Pistachio News Growing the Valley Podcast for the Latest on UC Orchard Research	PDF	10/13/21
Spring 2021 (1,445KB)	Orchard Management Considerations New walnut variety ‘UC Wolfskill’ released Pulling the trigger for the start of irrigation in the spring: Too much too soon for walnuts? New Staff Research Associate Introduction Tree and Vine Crop Herbicide Chart – Updated (2021) WALNUT: BACTERICIDE AND FUNGICIDE EFFICACY – Conventional Chemistries Herbicide Registration on California Tree and Vine Crops	PDF	8/23/21
Summer 2021 (2,667KB)	Orchard Walnut Orchard Management-July & August 2021 Drought Strategies for Walnut Orchards 2020 Walnut Freeze: Road to Recovery Managing Mold in Walnut New Staff Research Associate Introduction Listen to the Growing the Valley Podcast for the Latest on UC Orchard Research Butte Co. Orchard Newsletters are Online: Are your friends receiving them?	PDF	7/1/21
January 2021 (2,560KB)	2020 Sacramento Valley Winter Walnut Extension Meetings Winter Pest & Weed Management Considerations Preparing for Extreme Events: Flood and Drought Young Orchard Weed Management New EPA Paraquat Restrictions Pre-Season Airblast Sprayer Calibration Navigating Irrigation Technology Overload	PDF	7/1/21
Winter 2021 (1,288KB)	UCCE Virtual Walnut Series Walnut Winter Management UCCE Resources What new research into carbohydrates is teaching us about California orchards	PDF	7/1/21
Fall 2020 (862KB)	Advisor Farewell Fall Walnut Orchard Management Considerations Tree and Orchard Replanting Considerations in a Lean Price Year Walnut Cultivar Table Selecting the Right Clonal Walnut Rootstock for Managing Soil and Pest Problems	PDF	7/1/21
Summer 2020 (1,203KB)	Advisor Farewell Pre-Harvest Walnut Orchard Management Managing Mold in Walnut Ethephon in a Straggled Leaf-Out, Lean Price Year Managing Walnut Orchards for Insect-Eating Birds	PDF	7/1/21
04/08/2020 (1,079KB)	UCCE Working Remotely What Rootstock Would You Choose? Tell Us. Orchard Management Considerations Preparing for Extreme Events: Spring Frost Irrigation with Roots in Mind Walnut: Bactericide & Fungicide Efficacy (2020) Herbicide chart update	PDF	4/8/20
02/06/2020 (2,560KB)	2020 Sacramento Valley Winter Walnut Extension Meetings Winter Pest & Weed Management Considerations Preparing for Extreme Events: Flood & Drought Young Orchard Weed Management New EPA Paraquat Restrictions Pre-season Airblast Sprayer Calibration Navigating Irrigation Technology Overload	PDF	2/6/20
09/03/2019 (1,744KB)	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	PDF	9/3/19
06/13/2019 (2,072KB)	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	PDF	7/3/19
03/22/2019 (1,837KB)	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	PDF	3/22/19
12/20/2018 (1,610KB)	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	PDF	1/2/19
08/28/2018 (2,726KB)	2018 IPM Breakfast Meetings 3^rd 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	PDF	8/28/18
06/05/2018 (1,945KB)	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	PDF	6/20/18
03/12/2018 (1,805KB)	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	PDF	3/26/18
09/06/2017 (1,712KB)	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	PDF	11/7/19
07/20/2017 (2,390KB)	New Farm Advisor Introduction Insect and Mite Updates - 2017 Flooded Orchard Damage Update and Management Considerations In-Season Walnut Production Considerations	PDF	11/7/19
04/04/2017 (2,020KB)	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	PDF	3/26/18
01/03/2017 (970KB)	NOW Update New: Monthly IPM Breakfast Meetings 2017 UCCE Walnut Meetings Agenda: Butte/Glenn County Almond & Walnut Day Counting Winter Chill	PDF	3/26/18
07/28/2016 (1,415KB)	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	PDF	3/26/18
01/20/2016 (1,104KB)	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	PDF	3/26/18
03/22/2016 (1,476KB)	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	PDF	3/26/18
08/14/2015 (1,320KB)	Navel Orangeworm in Walnuts Using Ethephon for Earlier Harvest Preparing Young Walnut Trees for Winter Late Summer and Fall Orchard Management Considerations	PDF	3/26/18
03/16/2015 (2,050KB)	Advances in Walnut Production Course Walnut Orchard IPM Activities Walnut Blight Management Preventing Walnut Scale and Botryosphaeria Canker and Blight	PDF	3/26/18
09/22/2014 (963KB)	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	PDF	3/26/18
01/03/2015 (1,196KB)	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	PDF	3/26/18
07/01/2014 (948KB)	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	PDF	3/26/18
04/08/2014 (514KB)	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	PDF	3/26/18
07/09/2013 (1,021KB)	Irrigation management tools for developing walnut trees Walnut husk fly trap study Ethephon use considerations in the Sacramento Valley	PDF	7/9/13
03/22/2013 (1,241KB)	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	PDF	3/22/13
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	DOCX	10/12/12
07/12/2012 (689KB)	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	PDF	7/11/12
02/23/2012 (4,064KB)	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	PDF	2/23/12
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	PDF	6/1/10
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	PDF	3/22/10
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