Walnuts
Diseases
- Botryosphaeria Canker & Blight
- Branch Wilt
- Considerations for Replanting Walnut Orchards
- Kasumin - A New Tool for Walnut Blight Management
- Phytophthora Management
- Preventing Crown Gall
- The Latest on Managing Bot Canker and Blight in Walnut - 2016 Research Updates
- Treating Crown Gall
- Walnut Blight Bud Sampling
- Walnut Blight Management
Flood Damage
- 2017 Research Results on Flood Damaged Trees
- End of 2017 Season Flooded Orchard Damage Update
- Flooded Orchards, Part 1: Generalities of Flooding Damage
- Flooded Orchards, Part 2: Reflections on Past Flooding Events
- Flooded Orchards, Part 3: Management Guidelines to Consider
- Summer Flooded Orchard Damage Update, Part 1: Observations and Research Plans
- Summer Flooded Orchard Damage Update, Part 2: Management Considerations
- Summer Flooded Orchard Damage Update, Part 3: Resources for Flood Damaged Orchards
- What to Do this Spring for Flood Damaged Trees
Horticulture
- Avoiding Freeze Damage
- Counting Winter Chill
- Ethephon for Earlier Harvest
- Feather Fingergrass: an Emerging Problem in Orchards
- Interpreting Soil Test Results
- Oilless Walnuts
- Options for Gopher Management
- Planting a Cover Crop
- Tipping the Scales to Favor Walnut Quality
- Training Young Walnut Trees: Minimum Pruning vs. No Pruning Compared
- Yellowing Trees
Insects & Mites
- 2017 Walnut Insect & Mite Updates
- Aphids and Mites
- Harvest Damage Evaluation for Walnuts
- Monitoring Codling Moth In and Near Mating Disruption Orchards
- Monitoring for Walnut Scales
- Navel Orangeworm in Walnut
- Navel Orangeworm in Walnuts 2017 – Stay Alert
- Navel Orangeworm Management Considerations to Protect Walnut Quality
- Navel Orangeworm vs Codling Moth Identification Chart
- Walnut Dormant Monitoring and Treatment Decisions
- Walnut Husk Fly Biology, Monitoring, and Spray Timing
- Walnut Husk Fly Trap and Low Volume Spray Study
Irrigation
- Irrigating Using ETc
- Irrigating Young Trees
- Irrigation System Maintenance
- Missing the Target: Why you Should Irrigate Potted Trees Directly onto Potting Media
- Northern California Cropping and Irrigation Patterns (Part 1)
- Northern California Cropping and Irrigation Patterns (Part 2)
- Potted Tree Irrigation after Planting: Getting the First Year Right
- Soil Moisture Sensor Selection is Confusing
- Thinking About Irrigating This Winter?
- Top Five Questions: Evaluating a Water Supply for Suitability to Irrigate Nut Crops
- When Should You Apply the First Irrigation of the Season?
- Winter Irrigation During Drought
- Zone Irrigation, Part 1 - Zone Irrigation Concepts
- Zone Irrigation, Part 2 - Designing a System
Walnut Orchard Development
- Orchard Soil Preparation
- Planting Bareroot Trees
- Planting Potted Clonal Rootstock
- Replanting Individual Trees
- Replanting into Nematode-Infested Soils
- Selecting the Right Clonal Rootstock for Managing Soil and Pest Problems
- Tree Spacing
- Walnut Trees in the Nursery Trade: Terminology, Propagation, Availability, & Pest Interactions
Year-Round Management
- 2016 Post-Harvest Walnut Navel Orangeworm Update
- Almond & Walnut Orchard Management Considerations for July
- August Orchard Management Considerations for Almond and Walnut
- Chilling Hours Update 2018 - Yuba City
- Frosty This Morning? Avoid Freeze Damage in Young Walnuts.
- March Orchard Management Considerations
- Time to Think About Cover Crops in Walnuts
- Walnut Orchard Management Considerations for September