In This Issue

• Winter Meetings
• Walnut Winter Management UCCE Resources
• Managing flatheaded borer
• Cost drivers of walnut production
• Phytophthora sampling in the Stockton East Water District
• Selecting the Best Walnut Rootstock for Your Situation: 2026 Update 

In This Issue

• Almond Orchard Management Considerations: February & March
• Research updates on almond Red Leaf Blotch
• Preventing Bacterial Blast Damage in 2025
• Phytophthora sampling in the Stockton East Water District
• Honeybee Health: A 2025 Retrospective and 2026 Outlook

UCCE Northern Sacramento Valley Orchards Prune Newsletter - Fall/Winter 2025

In This Issue:

• Upcoming UCCE Orchard Events
• Fall/Winter Prune Orchard Tasks
• 2025 Season Retrospective
• New UC Davis Prune Varieties Prove Promising 2025
• Advancing Prune Bloom: What we Know so Far

UCCE Northern Sacramento Valley Walnut Newsletter - Fall 2025

In This Issue

• Walnut Orchard Tasks
• Post-harvest Ground Squirrel Management
• Pre-Emergent Herbicides: 2025 Herbicide Demonstration Trial for Walnut
• New Staff Research Assistant
• Save the Dates! Fall & Winter Meetings

In this Issue: 

• Almond Orchard Management Considerations: Fall 2025
• Post-Harvest Ground Squirrel Management
• Oak Root Fungus: Rootstock Considerations in 2025-2026
• Red Leaf Blotch Finds its way to the Sacramento Valley (2025)
• Fall Zinc and Boron Review 2025
• Grower Meetings for Late Fall 2025 and Winter 2026

In this Issue: 

• Almond Orchard Management Considerations: July - Sept
• Hull Split: 2025 Considerations
• Harvest: 2025 Considerations
• A July Nitrogen Leaf Result of 2.4% is the Goal

In This Issue

• Orchard Tasks – Summer
• Native Hedgerows for Weed Management
• Maximizing Walnut Quality
• Ethephon Use for Managing Walnut Harvest and Quality

In This Issue

• Upcoming Events
• Summer Orchard Consideration
• Managing Webspinning Spider Mites in Prunes
• Management of Johnsongrass in Orchards
• Prune Orchard Pre- and Post-Harvest Irrigation Management

In This Issue: 

• Save the Dates
• Some Factors to consider when evaluating a new crop enterprise for your farm
• GDH30 for 2025: where we stand and what it means
• Prune Fruit Bloom Report, 2025

UC Cooperative Extension Prune Research Tour Part 1 Registration Flyer - Thursday, May 29, 2025 @ 8:00 a.m., Davis/Winters Area

Highlights Include: 

Electrical Weed Control by Brad Hanson, Tong Zhen

Cropload mapping for thinning and in-season crop assessment by Matt Koball, Mike Turkovich

Lunch at 12:00 p.m., hosted by CA Prune Board @ Chuy's Taqueria, Winters

To register, visit:  https://docs.google.com/spreadsheets/d/1wMIZrm2eM98Yc8LI9HSfiFOtIP_P8dNBD54zs8AAwTY/edit?gid=0#gid=0.