Prune Notes

Issues	Articles	Type	Date Added
Winter 2024 (982KB)	Prune Orchard Considerations 2024 Prune Resources Through End of Year 2024 Season Retrospective Assessing the Needs of Ag Producers in Butte, Glenn & Tehama Counties New Staff Research Associate! Rootstock options for your next orchard	PDF	12/12/24
Preharvest 2024 (1,163KB)	Prune Orchard Considerations Phellinus wood rot, or “Why do my trees blow up at harvest?” Making money at harvest What are you doing for your orchard’s financial longevity? New Staff Research Associate!	PDF	7/12/24
Summer 2024 (833KB)	• Save the Dates • Spring & Early Summer Orchard Consideration • The Big Three in Prunes • New UC Davis Prune Varieties Prove Promising	PDF	4/30/24
Bloom 2024 (814KB)	• Bloom Orchard Considerations • Bloom weather and prune fruit set: what we know so far • Potassium Management Options in Prunes • Managing aphids in prune orchards • New Advisor! • Save the Dates • Fungicide Efficacy • Herbicide Registration Chart	PDF	2/28/24
Fall 2023 (1,097KB)	• Save the Dates! • Fall Prune Orchard Management Considerations • Canker Management: Spray Now or Pay Later • Replanting Prunes back into Prunes • Gear Up, Throttle Down to control pests, spray drift, and costs • Prune Brownline Alert • New Orchard Advisor Introduction	PDF	10/3/23
Preharvest 2023 (520KB)	• Preharvest and Harvest Prune Orchard Considerations • Getting the Best Grower Returns at Harvest • Potassium review • New Orchard Advisor	PDF	9/25/23
Spring 2023 (1,120KB)	• Spring & Early Summer Orchard Considerations • Weather in 30 days after bloom helps plan thinning and harvest • Why thin prunes? • The most important task of the year • Twelve ways to ruin a prune orchard	PDF	9/25/23
Bloom 2023 (2,007KB)	• Bloom 2023 Prune Orchard Considerations • Mechanical Pruning Trial in ‘French’ Prune – Through Year Four • Bloom weather and prune fruit set: what we know so far. • Fungicide Efficacy	PDF	9/25/23
Fall 2022 (1,575KB)	• Orchard Considerations • Battle Back Against Cankers Before They Kill Your Trees! • New prune varieties show promise in reducing fruit drying costs • New IPM Advisor • Follow us on Twitter! • Are your friends getting the newsletter? • Listen to Growing the Valley Podcast	PDF	9/25/23
Postharvest 2022 (1,087KB)	UC Davis Breeding Program – 2022 Field Meeting Orchard Considerations Five Practices to Help Prevent Bacterial Canker Late-season Irrigation Management in Prune Pre-harvest Management of Brown Rot Follow us on Twitter!	PDF	8/8/22
Spring 2022 (1,067KB)	Orchard Considerations New UC Davis Prune Varieties prove promising Mechanical pruning trial in “French” prune. The most important tasks of the year. Adela Contreras Listen to Growing the Valley podcast!	PDF	5/13/22
Fall 2021 (1,040KB)	Sacramento Valley Tree Crop IPM Webinar Walnut Freeze Webinar Winter/Spring Sacramento Valley Tree Crop meetings Fall Prune Orchard Management Considerations Three Steps to Combat Cytospora Canker Prune Orchard Investments in a Better Market Year New Advisor Introduction Central Valley Pistachio News	PDF	10/25/21
Pre-& Post-Harvest, 2021 (1,287KB)	Pre-Harvest & Harvest Prune Orchard Considerations, 2021 Getting the best grower returns at harvest Fruit set, 2021. What happened? Post-harvest Orchard Clean Up and Pruning – A Pruner’s Pocket Guide For a Healthy Orchard Next Spring, Follow Through on Late Season Irrigation in Your Prune Orchard New Staff Research Associate Introduction New Chico State Orchard Researcher Introduction 2021 Summer Field Meeting Growing the Valley Podcast	PDF	7/27/21
Spring 2021 (695KB)	Spring & Early Summer Orchard Considerations Checking Cropload and Shaker Thinning Prunes Statewide Prune Day Recording New Staff Research Associate Irrigating with lower quality water? What to consider first Tree and Vine Crop Herbicide Chart – Updated (2021)	PDF	7/2/21
July 2020 (827KB)	Advisor Farewell Pre-Harvest Prune Orchard Considerations Pre– and Post-Harvest Irrigation Management in Prune Prune Harvest Prep: Crop Maturity and Fruit Size Checks	PDF	7/2/21
October 2020 (1,258KB)	Long Pruning Webinar - Recorded SAVE THE DATE! UC Prune Research Conference Fall & Winter Prune Orchard Management Considerations Cytospora: A Prune Grower’s Arch Nemesis New UC Davis Prune Cultivars Prove Promising	PDF	7/2/21
May 2020 (864KB)	Spring & Early Summer Orchard Considerations Thinning Prunes Update on Rootstocks for Prune Production	PDF	7/2/21
03/06/2020 (1,236KB)	Orchard Considerations for Bloom and Beyond Young Orchard Weed Management New EPA Paraquat Restrictions Navigating Irrigation Technology Prune Fungicide Efficacy Tables	PDF	3/6/20
10/03/2019 (1,581KB)	Newsletters are going online! Post-Harvest Almond & Walnut IPM Workshop 2019 IPM Breakfast Meetings Fall & Winter Prune Orchard Management Considerations Long Pruning for Greater Early Yields Cytospora: A year-round fight Increase Your Return on Investment with Post-Harvest Weed Scouting	PDF	10/3/19
07/31/2019 (1,952KB)	Butte County Newsletters Going Online! IPM Breakfast Meetings Pre-Harvest & Harvest Prune Orchard Considerations 2019 Canker Review Delivering the largest fruit possible this year.	PDF	7/31/19
04/25/2019 (1,579KB)	Newsletters are going online! 2019 IPM Breakfast Meetings Prune Management Considerations: Spring -- Summer The Advantages of Tighter Spacing and Greater Light Interception in California Prune Orchards Thinning Prunes Updated cost of producing prunes now available	PDF	4/25/19
01/29/2019 (1,688KB)	Newsletters are going online! 2019 IPM Breakfast Meetings N. Sacramento Valley Prune Day (Feb 22nd) Orchard Considerations Bloom Disease Treatments and Honey Bee Safety Update on Heart Rot in Prunes Is This a Year to Skip Thinning? Weed Management Considerations When Replanting Trees Fungicide Efficacy and Timing Tables for Prune Trends in World Prune Markets	PDF	1/29/19
10/18/2018 (1,386KB)	Butte County Newsletters are going online! 3rd Annual Post-Harvest IPM Workshop Fall & Winter Prune Orchard Management Considerations Cytospora Post-Harvest: Cut it out! Protect fresh cuts! Pros and Cons of Mechanical Pruning	PDF	12/18/18
06/19/2018 (980KB)	Growing the Valley Pre-Harvest & Harvest Prune Orchard Considerations Managing canker diseases in prune orchards Prune Harvest Timing July Leaf Sampling	PDF	8/28/18
02/20/2018 (1,878KB)	South Sacramento Valley Prune Meeting Prune Bloom Orchard Management Considerations Dry, Warm, Winter Raises Questions about Irrigation Thinning Prunes Evaluating New Rootstocks: What’s the Latest? New Hazard for Interplanted Orchards Fungicide Efficacy	PDF	3/26/18
10/02/2017 (861KB)	Advances in Prune Production Fall Prune orchard management considerations following a heavy crop Aphid Management Review Upcoming IPM Breakfasts New Farm Advisor Introduction	PDF	6/20/18
05/27/2017 (848KB)	Techniques to Time First Irrigation Dates for Prune Thinning Prunes Prune Orchard Nutrition: Thoughts for 2017 Why are Some Prune Trees Yellow in the Spring? The Bicarbonate Blues. Prune Management Considerations: Late Spring through Summer	PDF	3/26/18
03/17/2017 (1,480KB)	Crop Load Adjustment (Thinning Prunes) Options for Bad Weather at Bloom Fungicide Efficacy Tables Bloom Orchard Management Considerations	PDF	3/26/18
10/17/2016 (961KB)	Food for Thought When Planting a New Prune Orchard Potted Tree Irrigation After Planting: Getting the First Year Right Fall Prune Orchard Management Considerations Following a Light Crop Preliminary Observations for New Prune Rootstocks Prune Industry Summit 2017	PDF	3/26/18
02/19/2016 (1,918KB)	2015 Field Evaluation of Prune Rootstocks Fungicide Efficacy Tables Nitrogen Management for Prunes Prune Bloom Orchard Management Considerations	PDF	3/26/18
05/25/2016 (867KB)	Prune Bloom, 2016 Weekly Soil Moisture Loss Reports to Assist With Water Management Pocket Gopher Management: Don’t Wait Too Long! Prune Orchard Management Considerations – Fruit Development to Harvest	PDF	3/26/18
11/02/2015 (900KB)	Rain and pruning don’t mix Weed management in prunes Gear Up, Throttle Down for pest control and cost savings A good year for a fall spray in prunes? Fall orchard management considerations	PDF	3/26/18
07/21/2015 (713KB)	Predicting an Early ‘French’ Harvest Blue Prune Prune Cracking Pre-Harvest Practices to Consider	PDF	3/26/18
04/22/2015 (1,171KB)	Warm postbloom weather = early harvest? How hot was it at bloom, 2015? Drought strategies for California prune production Crop load assessment and adjustment N budgeting following the 4 Rs Prune Orchard Management Activities May through July	PDF	3/26/18
02/23/2015 (2,337KB)	South Sac Valley Prune Meeting Prune Orchard Activities February to May Heat at Bloom Update ? Honey Bee Safety During Prune Bloom Pesticide Safety Train the Trainer Workshops, March 12th in Davis Fungicide Treatment Timing and Efficacy Tables	PDF	3/26/18
10/01/2014 (1,987KB)	Fall Orchard Considerations Irrigation System Maintenance Cytospora Cankers can Destroy an Orchard Fall Weed Management Considerations in Prune Orchards Potassium Nutrition: Maintaining Optimum Levels by Replacing What You’ve Lost Save the Date	PDF	3/26/18
06/18/2014 (549KB)	New IPM Advisor Introduction New Farm Advisor Introduction Advisor Retirement – Thanks! Scouting for Spider Mites in Prunes Deficit Irrigation for French Prune Chill model comparison – Why two models judged last winter very differently Nitrogen Management in Orchard Crops -- Red Bluff Meeting July 24th	PDF	3/26/18
04/16/2014 (716KB)	Prune aphids in Spring & Summer Irrigating French prune during a drought Efficient nitrogen management in prune production Low chill winter? How hot was it at bloom, 2014?	PDF	3/26/18
07/03/2013 (758KB)	Blue prune drop and leaf scorch Earlier harvest in 2013? 2013: A tough year for cankers	PDF	9/5/13
04/08/2013 (624KB)	Orchard Irrigation 2013 Prune Tissue Sampling for Leaf Analysis How hot was it at bloom, 2013 Efficient Nitrogen Management in Prune Production	PDF	9/5/13
01/31/2013 (1,159KB)	Heat at Bloom Update Nitrogen Management for French Prune Brown Rot Blossom/ Twig Blight & Preventing Fungicide Resistance New 2012 Prune Cost Study for the Sacramento Valley Red Bluff Prune Day Feb 8th --- Yuba City Prune meeting Feb. 27th	PDF	2/1/13
03/15/2012 (557KB)	Heat at bloom update It's your money Mobile Irrigation Lab Service Fungicide Timing and Efficacy Tables	PDF	3/15/12
10/11/2012	Prune orchard nutrition Fall spray for prune aphid management Prune out Cytospora cankers to reduce disease Two different spots on prune leaves	DOC	10/16/12
07/20/11 (3,382KB)	Managing fruit brown rot and prune rust. Blue prune drop and leaf scorch. Bloom time temperatures compared to fruit set in 2011. Update on Spotted Winged Drosophila in prunes. When will harvest start in 2011?	PDF	7/20/11
07/30/2010	What can you do now to produce the largest prunes possible? Field sizing French prune Managing fruit brown rot in prunes Spotted winged Drosophila: new damaging pest in prunes?	PDF	7/30/10
10/4/2010 (1,006KB)	Prune out Cytospora cankers to reduce disease Fall spray for prune aphid management Scale pests in prune orchards and keeping a balance of natural enemies to control them Using a high oil rate before bloom: Why do it?	PDF	10/4/10
08/13/2012 (662KB)	Managing prunes through harvest Sizing prunes at harvest Distinguishing between branch dieback disorders New Prune Production Manual Available	PDF	8/16/12
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