Sustainable Winegrowing

Three-cornered alfalfa hopper (TCAH) is the only confirmed insect vector of grapevine red blotch virus in Vitis vinifera, yet many growers first realize they have the pest only after spotting petiole girdling in the vineyard. Cindy Kron, North Coast IPM Advisor at UC ANR, shares findings from two years of weekly sweep-net monitoring at Oakville Research Station that revealed TCAH adults are present well before bud break, suggesting grapevines are not their preferred host. She explains the insect's life stages, why legumes serve as key feeding and reproductive hosts, and why detecting early instars remains a major challenge for vineyard IPM. Cindy also discusses how degree-day models may help growers better time tillage to reduce TCAH populations and limit grapevine red blotch risk. Resources: 71: New Techniques to Detect Grapevine Leafroll Disease 131: Virus Detection in Grapevines Can a pesky treehopper be foiled because its growth is regulated by temperature? Cindy Kron How to use a model for reduction of three-cornered alfalfa hopper in vineyards Identification of Nonhost Cover Crops of the Three-Cornered Alfalfa Hopper (Spissistilus festinus) Use of Ground Covers to Control Three-Cornered Alfalfa Hopper, Spissistilus festinus (Hemiptera: Membracidae), and Other Suspected Vectors of Grapevine Red Blotch Virus Weather Models and Degree Days Support the Podcast: Make a Donation Vineyard Team Programs: Juan Nevarez Memorial Scholarship - Help students from vineyard families pursue higher education Online Courses - Earn DPR and CCA hours with expert-led sustainability trainings SIP Certified - A trusted third-party certification proving your sustainable practices with science-backed standards Sustainable Ag Expo - Join top experts at the premier winegrowing event of the year Vineyard Team Membership - Connect with a community advancing sustainable winegrowing

Wine grape growers are turning to precision technology to mitigate bird damage while reducint labor and material costs. In this episode, Joseph Traut (Cypress AgTech) joins growers Chad Foster (Maverick Farming) and Paul Ramirez (Loma Escondida Farming) to share real-world experience using an autonomous, silent laser system that protects 20–30 vineyard acres per unit. Learn how to optimize placement, program effective coverage patterns, and time use from mid-June through harvest. Hear which bird species are easiest to deter, where challenges remain, and how this approach supports sustainable, worker-safe vineyard management. Resources: 6/10/2026 REGISTER: Technology Field Day Tailgate 272: 30 Gophers a Night: Why Barn Owls Belong in Your Vineyard Autonomous Bird Laser Deterrent (video) Cypress AgriTech | Sustainable Farming Technology | United States Joseph Traut, Vice President, Cypress AgriTech Maverick Farming Riley Boylan, President, Cypress AgriTech Support the Podcast: Make a Donation Vineyard Team Programs: Juan Nevarez Memorial Scholarship - Help students from vineyard families pursue higher education Online Courses - Earn DPR and CCA hours with expert-led sustainability trainings SIP Certified - A trusted third-party certification proving your sustainable practices with science-backed standards Sustainable Ag Expo - Join top experts at the premier winegrowing event of the year Vineyard Team Membership - Connect with a community advancing sustainable winegrowing

The biggest challenge in ag tech isn't innovation — it's making tools that actually work on the farm. Matthew Hoffman, General Partner and Head of Farms at Reservoir, shares how the company is helping ag tech startups develop tools that solve real farming challenges. By partnering directly with specialty crop producers, including winegrape growers, Reservoir gives companies access to farms, equipment, and real-world feedback to refine technologies before they reach the market. Matthew highlights emerging innovations in autonomous equipment, robotics, machine vision, and farm management technology, and explains why grower involvement is essential to creating solutions that fit the realities of vineyard operations. Resources: 6/10/2026 REGISTER: Technology Field Day Tailgate 129: The Efficient Vineyard Project 233: The Gap Between Space and Farm: Ground Truthing Satellite Data Models 249: Making it Easier to Use Satellite Data in Agriculture Matthew Hoffman - LinkedIn Reservoir Reservoir - LinkedIn Support the Podcast: Make a Donation Vineyard Team Programs: Juan Nevarez Memorial Scholarship - Help students from vineyard families pursue higher education Online Courses - Earn DPR and CCA hours with expert-led sustainability trainings SIP Certified - A trusted third-party certification proving your sustainable practices with science-backed standards Sustainable Ag Expo - Join top experts at the premier winegrowing event of the year Vineyard Team Membership - Connect with a community advancing sustainable winegrowing

Can your soil hold enough water to carry vines through the season without irrigation? Miguel Garcia, Regenative Agriculture Project Manager at Napa RCD, shares findings from a 15-vineyard study across California's North Coast. By measuring organic matter, soil respiration, active carbon, and aggregate stability, the project evaluates how soils store and supply water over the growing season. Learn how cover crops, tillage practices, and deep root systems shape soil and moisture dynamics, and how dry-farmed vineyards compare with the broader soil health database. Resources: 4/28/26 Dry Farm Site Tour, New Cuyama, CA | REGISTER 5/21/26 The Science and Practice of Dry Farmed Vineyards, Paso Robles, CA | REGISTER 171: How to Farm Wine Grapes for Climate Change 181: Can Applying Compost Reduce Water Use? 287: Dry Farming Vineyards: Where It Works and How to Begin California Winegrape Dry Farming Potential Map Dry Farming in Coastal California Vineyards Napa County Resource Conversation District North Coast Soil Hub Support the Podcast: Make a Donation Vineyard Team Programs: Juan Nevarez Memorial Scholarship - Help students from vineyard families pursue higher education Online Courses - Earn DPR and CCA hours with expert-led sustainability trainings SIP Certified - A trusted third-party certification proving your sustainable practices with science-backed standards Sustainable Ag Expo - Join top experts at the premier winegrowing event of the year Vineyard Team Membership - Connect with a community advancing sustainable winegrowing

Making the best sustainable farming decisions isn't about choosing one solution; it's about weighing the best strategies for your vineyard. Lucas Pope, Vice President of Altera Solutions, shares how growers can balance performance, cost, and long-term impact by understanding trade-offs. Lucas dives into developing a vineyard for efficiency, the best irrigation setup, composting, herbicide-free practices, and fungicide resistance, while emphasizing collaboration with clients to select the best approach for each unique site. Resources: 117: Grapevine Mildew Control with UV Light 219: Intelligent Sprayers to Improve Fungicide Applications and Save Money 302: New Cover Crop Tool for Western Growers Alterra Solutions Healthy Soils Playlist Pre-Season Checklist for Powdery Mildew Management | DPR 1 - O; CCA 1 - IPM Support the Podcast: Make a Donation Vineyard Team Programs: Juan Nevarez Memorial Scholarship - Help students from vineyard families pursue higher education Online Courses - Earn DPR and CCA hours with expert-led sustainability trainings SIP Certified - A trusted third-party certification proving your sustainable practices with science-backed standards Sustainable Ag Expo - Join top experts at the premier winegrowing event of the year Vineyard Team Membership - Connect with a community advancing sustainable winegrowing

Barn owls are natural predators of gophers, voles, and mice, three of the most common vertebrate pests in vineyards. Matt Johnson, Professor in the Department of Wildlife at Cal Poly Humboldt University, studies how farms and wildlife can mutually benefit each other. Matt shares practical guidance on barn owl nest box design, placement, and maintenance, and explains how vineyard landscapes and surrounding habitat influence owl occupancy. Resources: 272: 30 Gophers a Night: Why Barn Owls Belong in Your Vineyard Barn Owl Hunting Animation – Yarrow from the Lodi Wine Visitor Center Barn Owl Nest Box Placement and Maintenance Barn Owl Nest Box Plans Cal Poly Humboldt Barn Owls Probability of Nest Box Occupancy by Barn Owls Map Support the Podcast: Make a Donation Vineyard Team Programs: Juan Nevarez Memorial Scholarship - Help students from vineyard families pursue higher education Online Courses - Earn DPR and CCA hours with expert-led sustainability trainings SIP Certified - A trusted third-party certification proving your sustainable practices with science-backed standards Sustainable Ag Expo - Join top experts at the premier winegrowing event of the year Vineyard Team Membership - Connect with a community advancing sustainable winegrowing

With current market shifts, vineyard mothballing can buy growers time—but it requires strategy, not abandonment. Chris Chen, Integrated Vineyard Systems Advisor with UC Cooperative Extension, draws on research in Australia and field experience in California to outline what minimal management really looks like. From pruning approaches and livestock integration to pest and disease management, irrigation by rootstock and soil type, and long-term yield risks, he explains how to reduce costs now without compromising a vineyard's future—or risking fines. Resources: 4/8/2026 REGISTER: Tailgate | Mothballing Roundtable Chris Chen - Twitter Out of Sync: vineyard responses to changing conditions Partial Solar Radiation Exclusion with Color Shade Nets Reduces the Degradation of Organic Acids and Flavonoids of Grape Berry (Vitis vinifera L.) UCCE North Coast Viticulture UC Cooperative Extension Sonoma County UCCE Viticulture Publications Online - North Coast Support the Podcast: Make a Donation Vineyard Team Programs: Juan Nevarez Memorial Scholarship - Help students from vineyard families pursue higher education Online Courses - Earn DPR and CCA hours with expert-led sustainability trainings SIP Certified - A trusted third-party certification proving your sustainable practices with science-backed standards Sustainable Ag Expo - Join top experts at the premier winegrowing event of the year Vineyard Team Membership - Connect with a community advancing sustainable winegrowing

Cover crops play a critical role in building healthy, resilient soils in vineyards and agricultural systems. Sarah Light, Agronomy Farm Advisor with UC Cooperative Extension, shares how cover crops protect soil from wind and heavy rain, improve water infiltration, and increase on-farm biodiversity. She introduces a newly released cover crop selector tool developed for Western growing regions, with guidance on species selection, termination practices, and grower goals such as reducing compaction, fixing nitrogen, and supporting pollinators. This practical resource helps growers choose the best cover crops for their location, crops, and management objectives. Resources: 151: The Role of the Soil Microbiome in Soil Health 159: Under-Vine Vegetation to Control Vine Vigor 298: How Cover Crops Shape Grapevine Root Systems Cooperative Extension, Sutter-Yuba Counties Cover Crop Decision Tool Cover Cropping in California's Water Scarce Environment Cover Crop Resources Sarah Light's Research New tool helps farmers select cover crops UC Ag Experts Talk: Considerations for Cover Crops and Weed Management (video) Support the Podcast: Make a Donation Vineyard Team Programs: Juan Nevarez Memorial Scholarship - Help students from vineyard families pursue higher education Online Courses - Earn DPR and CCA hours with expert-led sustainability trainings SIP Certified - A trusted third-party certification proving your sustainable practices with science-backed standards Sustainable Ag Expo - Join top experts at the premier winegrowing event of the year Vineyard Team Membership - Connect with a community advancing sustainable winegrowing

A decade of viticulture education is right at your fingertips. Executive Director Beth Vukmanic interviews longtime host Craig MacMillan to celebrate ten years and 300 episodes of the Sustainable Winegrowing Podcast. Together, they reflect on some of Craig's most memorable interviews—from new discoveries in sour rot and space-to-farm technology, to using storytelling to sell more wine and tackling leadership transitions. Resources: 17: New Discoveries about Sour Rot 129: The Efficient Vineyard Project 161: Use Storytelling to Sell More Wine 233: The Gap Between Space and Farm: Ground Truthing Satellite Data Models 239: Ford Pro Pilot – Trialing Electric Trucks in the Field 249: Making it Easier to Use Satellite Data in Agriculture 257: Understanding Winery Visitors – Increase Sales with your Messaging 268: How to Tackle Leadership Transitions Successfully 286: To Till or Not to Till: Impacts on Soil, Vines, and Vineyard Budgets Craig Macmillan Support the Podcast: Make a Donation Vineyard Team Programs: Juan Nevarez Memorial Scholarship - Help students from vineyard families pursue higher education Online Courses - Earn DPR and CCA hours with expert-led sustainability trainings SIP Certified - A trusted third-party certification proving your sustainable practices with science-backed standards Sustainable Ag Expo - Join top experts at the premier winegrowing event of the year Vineyard Team Membership - Connect with a community advancing sustainable winegrowing

Root systems are more than just anchors, they are the plant's stomach, communicating with their environment through a network of microbes. Suzanne Fleishman, Assistant Professor of Root Biology at Penn State University, introduces the emerging field of Root Agroecology, which integrates plant physiology and omic methods to improve sustainability in vineyards. She shares insights from a five-year red fescue cover crop trial showing reduced pruning weights and improved vine balance, as well as shifts in rhizosphere microbiomes. Her future goal? A grower tool that predicts the best cover crops by site. Resources: 72: Soil Microbes and Nutrient Availability 151: The Role of the Soil Microbiome in Soil Health 159: Under-Vine Vegetation to Control Vine Vigor Can Cover Crops Improve Wine Grape Production Resilience? Research revealing grapevine root relationships Root Agroecology Lab Suzanne Fleishman Suzanne Fleisman – Google Scholar Suzanne Fleishman – Research Gate Undervine groundcover substantially increases shallow but not deep soil carbon in a temperate vineyard Support the Podcast: Make a Donation Vineyard Team Programs: Juan Nevarez Memorial Scholarship - Help students from vineyard families pursue higher education Online Courses - Earn DPR and CCA hours with expert-led sustainability trainings SIP Certified - A trusted third-party certification proving your sustainable practices with science-backed standards Sustainable Ag Expo - Join top experts at the premier winegrowing event of the year Vineyard Team Membership - Connect with a community advancing sustainable winegrowing

Lasers may offer a chemical-free way to deter bird pests in vineyards and other agricultural systems. George Gallagher, Department Head of Animal Science at Cal Poly San Luis Obispo, explains why bird pressure goes beyond crop loss, raising concerns about disease risks like salmonella, E. coli, and transmission of avian influenza. He shares results from a controlled study using a handheld laser, aimed at birds' feet, to measure how long it took them to respond. The research showed that different birds react differently. George highlights the importance of animal safety and the role of species-specific vision when evaluating new deterrent tools. Listen through the end to hear if the lasers work on rats. Resources: 58: Barn Owls 114: Designing a Vineyard for Year-Round Sheep Grazing 272: 30 Gophers a Night: Why Barn Owls Belong in Your Vineyard Cal Poly Animan Science Department George Gallagher George Gallagher |Amanote Research George Gallagher | Research Gate Tactical to Practical: The Human Component of Human-Wildlife Conflict Resolution Vineyard Team Programs: Juan Nevarez Memorial Scholarship - Donate Online Courses – DPR & CCA Hours SIP Certified – Show your care for the people and planet Sustainable Ag Expo – The premiere winegrowing event of the year Vineyard Team – Become a Member

Foxen and Niner show impactful ways to weave generosity into everyday business. As you plan for 2026, think about the unique ways your brand can meaningfully engage with your local community. Then, share your team's participation, spotlight the organizations you support, and tell the stories that highlight your values. Resources: *** Tell Your Sustainable Story Online Course *** Apply for SIP Certified Wine Likely Story Strategies Marketing Tips eNewsletter Sustainable Story Worksheet Vineyard Team Programs: Juan Nevarez Memorial Scholarship - Donate Online Courses – DPR & CCA Hours SIP Certified – Show your care for the people and planet Sustainable Ag Expo – The premiere winegrowing event of the year Vineyard Team – Become a Member

Will hybrid grapes help vineyards survive climate change? Professor Karine Pedneault of the Université du Québec en Outaouais explores this question through trials that expose grapevines to drought and heat stress. Testing both vinifera and hybrid varieties, her research measured plant water flow and metabolic responses to determine resilience. While hybrids still carry a stigma around flavor, they showed promising resistance, raising the potential to reduce fungicide use by up to half and adapt more sustainably to extreme weather scenarios. Resources: 223: New Decision Support System for Irrigation Efficiency 213: High Resolution Data from Space Helps Farmers Plan for Climate Change Karine Pedneault Karine Pedneault – Google Scholar Karine Pedneault - Instagram Karine Pedneault - LinkedIn Karine Pedneault – Research Gate Metabolic response of vitis vinifera and interspecific vitis sp. varieties to heat stress, water deficit and combined stress, using a metabolomic approach The organic vineyard as a balanced ecosystem: Improved organic grape management and impacts on wine quality Vineyard Team Programs: Juan Nevarez Memorial Scholarship - Donate Online Courses – DPR & CCA Hours SIP Certified – Show your care for the people and planet Sustainable Ag Expo – The premiere winegrowing event of the year Vineyard Team – Become a Member