San Joaquin County remains a leading hub for viticulture, with wine grape production playing a vital role in the local agricultural economy. Information on the agricultural production of the county can be found at https://www.sjgov.org/department/agcomm/general-info/crop-reports.
The Lodi American Viticultural Area (AVA) has gained increasing recognition for its premium varietal wines, further strengthening the county’s reputation as a high-quality wine-producing region. In addition to Lodi, vineyards across the Delta and South County areas contribute significantly to the thriving wine industry.
The industry remains a significant economic driver, supporting growers, wineries, and associated industries, reinforcing San Joaquin County’s reputation as a premier wine grape-producing region.
Quick Links
Pest Management
Provide guidelines on vineyard pest management including diseases, insects, weeds, and nematodes
- Primary Resource:
UC IPM - Grape Management Guidelines - Additional Resources:
Grape Pest Management Manual (UC ANR publication)
Vineyard Establishment
Advice on vineyard establishment including site selection, vineyard layout, and planting materials.
Varieties & Rootstocks
Descriptions and guidance for selecting grape varieties and rootstocks.
- UC Davis Varieties Database:
UC Davis Grape Registry - UC Rootstock Selection Guide:
UC Rootstock Selection Guide - Foundation Plant Services (FPS) Varieties and Rootstocks:
FPS Grape Varieties and Rootstocks
Canopy Management & Vineyard Practices
Includes pruning, training systems, canopy management strategies, and vineyard floor management.
- Pruning and Canopy Management:
UC IPM Canopy Management and Training - Cover Cropping:
UC SAREP Cover Crops Database - Practical Considerations for Canopy Management:
UCD V&E: Practical Considerations for Canopy Management (Presentation)
Irrigation & Water Management
Best practices for irrigation scheduling, drought management, and water use efficiency.
- CIMIS Weather & Irrigation Tool:
California Irrigation Management Information System (CIMIS) - OpenET Satalite-based Irrigation Tool:
OpenET - UC ANR CropManage Irrigation and Fertilization Tool:
CropManage - AWRI Heatwave and Water Management:
AWRI Heatwave Management
Soils & Nutrition
Information on grapevine nutrition, fertilization guidelines, and soil management.
- UC Healthy Soils for a Healthy California:
Soils for Farmers - Tips to build and conserve your farm soil - UC Grapevine Nutrition Resources:
Grapevine Mineral Nutrition NPK Guidelines (Geisseler Lab) - Grapevine Nutrition:
Mineral Nutrition and Fertilization (Christensen and Peacock)
Economics & Vineyard Business
Economic studies, marketing information, and financial tools for grape growers.
- UC Cost of Production Studies:
UC Davis Vineyard Cost Studies (Wine grapes) - California Grape Crush Reports:
California Grape Crush Report (USDA) - USDA Grape Acreage Reports:
California Grape Acreage Report (USDA)
Events & Training
Upcoming UC-hosted events, webinars, and field days.
- UC Davis Viticulture & Enology Events:
UC Davis Extension Viticulture Events - Small Vineyard Management I - Introduction to Vineyard Practices:
SVM I Course - Small Vineyard Management II:
SVM II Course
Research & Innovation
Updates on current research projects, collaborations, and scientific insights.
- UC Davis Viticulture & Enology Research:
UC Davis Department of Viticulture - California Agriculture Journal (Peer-reviewed UC research):
California Agriculture – Grapes Section - American Journal of Enology and Viticulture (AJEV):
AJEV Journal
Publications & Resources
Comprehensive library of extension publications and educational resources.
- UC ANR Publications Catalog:
UC ANR Catalog
Contact Info
Justin Tanner
UCCE San Joaquin County Viticulture Advisor
Phone: 209-953-6119
Email: jdtanner@ucanr.edu
