Archive Nut, Prune and Olive Programs

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Newsletters

In-a-Nutshell - Nut Culture
Dried Plum News - Prune Culture
Olive Notes - Olive Culture

Newsletter Articles:

May 2025Archived

Field picture submitted by Elizabeth Fichtner

Publications

Pest Notes
- Olive Knot
- Black Scale
UC Pest Management Guidelines (UC Statewide IPM Project Web Site)
UC Cooperative Extension Cost and Return Studies
- Almonds
  Double Line Drip Irrigation. Southern San Joaquin Valley. 2016 PDF
- Almonds
  Flood Irrigated. San Joaquin Valley North. 2011. PDF
- Almonds
  Micro-sprinkler. San Joaquin Valley North. 2016. PDF
- Olive Oil
  Super High Density. San Joaquin Valley 2007. PDF
- Olives - San Joaquin Valley. 2005 PDF
- Pecans - Sacramento/San Joaquin Valley - 2005. PDF
- Pistachios
  Low Volume Irrigation - San Joaquin Valley South. 2015. PDF
- Walnuts
  Late Leafing - Lateral Bearing. San Joaquin Valley North. 2017. PDF
- Walnuts
  Micro-Sprinkler Irrigation - San Joaquin Valley North. 2007 PDF

UC Cooperative Extension Sonoma County: Page

Excel Irrigation Scheduling Worksheet

Vineyard Irrigation Scheduling Worksheet (Interactive) This worksheet provides the means to calculate the amount of water to apply in a winegrape vineyard based on the deficit irrigation strategy fully detailed in the publication "Deficit Irrigation of Quality Winegrapes Using Micro-Irrigation Techn...

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UC Cooperative Extension Sonoma County: Page

Irrigation Distribution Uniformity for Adjusting Irrigation Timing

How to Calculate Distribution Uniformity and Adjust Irrigation RequirementsDistribution uniformity is expressed as a percentage, and is a relative index of the variability between emitters in an irrigation block. Distribution uniformity is defined as the average discharge of 25% of the sampled emitters…

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UC Cooperative Extension Sonoma County: Page

Grapevine Pests and Diseases

Pierce's Disease Insect Vectors Glassy Winged Sharpshooter identification. Grape Pest Notes Identification and monitoring information for arthropod grape pests and fungal diseases. Grapevine Red Blotch Disease Grapevine Red Blotch information and identification.

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UC Cooperative Extension Sonoma County: Page

Glassy-Winged Sharpshooter

Glassy-winged sharpshooter (GWSS) is a serious new pest in California. Like other sharpshooters, the GWSS spreads Xylella fastidiosa, the bacterium that causes Pierce's disease in grapevines.

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UC Cooperative Extension Sonoma County: Page

Mealybugs

How to Distinguish Among Different MealybugsWhich mealybug is it?

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UC Cooperative Extension Sonoma County: Page

Moth & Worm Pests

European Grapevine Moth Biology European Grapevine Moth: a New Pest of Grapes in California (CAPCA Adviser Magazine July 2010) European Grapevine Moth in Napa Valley Vineyards (Practical Winery & Vineyard, Mar/Apr 2010) European Grapevine Moth Grape Day Handout, February 2010 En Espaol: La Polilla d...

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UC Cooperative Extension Sonoma County: Page

Selected Plant and Soil Laboratories in Northern and Central California

An searchable table of selected labs and services can be found here: Interactive Table For an downloadable list of selected plant and soil labs in northern and central California, please visit our website at: https://ucanr.

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UC Cooperative Extension Sonoma County: Page