Resources
Online Resources
Vineyard Management Tools
- Scion Varieties by Heat Index
- Rootstock Varieties by Site Conditions
- Growing Degree Day (GDD) Calculator
Grapevine Management Tools
- Anatomy of a Grapevine
- Grape Berry Annual Development
- Training Types:
Local Resources and Contacts
Irrigation Scheduling
- Vineyard Irrigation Scheduling Worksheet
- Alternative Irrigation Scheduling Worksheet
- Reference Chart - Water Stress in Grapevines
Climate Tools
- Cal-Adapt.org
- IrriSAT - Weather Based irrigation tool
- CIMIS - Climate data for California
- Western Weather - Lake County
- CalAgroClimate - Weather-based decision tool
- OpenET - Crop evapotranspiration in your region
- Winter Chill - Calculates winter chilling hours
- UC IPM Growing Degree Day Calculator
Newsletters
- January 2022 - Wine Without Water
Digitized Articles
- Publication 4087
- Grapevine Nutrition and Fertilization in the San Joaquin Valley
- L. Peter Christensen, Amand Kasimatis, and Frederik Jensen
- Published: 1978
PCA Breakfasts
PCA breakfasts are a monthly gathering designed to allow Socratic discussion among licensed Pest Control Advisers in Sonoma, Mendocino, and Lake Counties. A valid PCA license is required to register for these events in Sonoma County; Those with an active PCA license or Qualified Applicators License (QAL) are welcome to register for the Mendocino County PCA Breakfast events. Those with valid QALs are welcome to register for only the Mendocino event. Restrictions on attendance is based on license status and is intended to reach those with the appropriate qualifications and expertise to contribute to the discussion at each event. Summaries of each event will be made available on this website following each PCA Breakfast for the purpose of public education and inclusion. These will be a write up of the topics discussed, state of current pest control activities, and concerns of PCAs in attendance.