ASEV-NGRA Precision Viticulture Symposium


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The American Society for Enology and Viticulture (ASEV) and the National Grape Research Alliance (NGRA) each work to support research for the U.S. grape and wine industry. ASEV is a professional society of enologists, viticulturists and scientists in the fields of wine and grape research and production, and NGRA is an industry coalition representing the research priorities of wine, juice, raisin and table grapes nationwide.

In 2021, we’re partnering to produce the ASEV-NGRA Precision Viticulture Symposium, held virtually on Monday, June 21, 2021. We’ve gathered some of the most highly regarded scientists working in precision viticulture research and the well-regarded growers applying precision technology and techniques for a non-commercial exploration of the current and future state of precision viticulture.

The event will help growers understand and adopt advances in data-driven farming. And it will give scientists a forum, too, to gain valuable insight from fellow researchers and from the industry early-adopters who share their experiences. In short, this symposium seeks to provide two-way dialogue to identify current research gaps, inform future scientific discovery and inspire application of current innovations.

Symposium Organizers

Russ Smithyman (Chair), National Grape Research Alliance (NGRA)
Terry Bates, Cornell University
Donnell Brown, National Grape Research Alliance (NGRA)
Mason Earles, University of California, Davis
Keith Striegler, E. & J. Gallo Winery


The times below are Pacific Daylight Time (PDT). Schedule is subject to change.
Morning Welcome
8:00 am – 8:05 am Donnell Brown, National Grape Research Alliance, California
Keynote Presentation
8:05 am – 8:50 am Precision Viticulture and Beyond – Digital Approaches to Winegrowing
Rob Bramley, Commonwealth Scientific and Industrial Research Organization (CSIRO), Australia
Vine Management
8:50 am – 9:10 am Monitoring Grapevine Nitrogen Status by Aerial and Ground Spectral Sensing
Alireza Pourreza, University of California, Davis
9:10 am – 9:30 am Remote Sensing for Vineyard Management in France: Insights to Better Target Future Developments
Bruno Tisseyre, L’institut Agro, France
9:30 am – 9:50 am Innovative Technologies for Precision Irrigation in Vineyards
Vinay Pagay, University of Adelaide, Australia
9:50 am – 10:10 am Leveraging Sensor Information for Variable Rate Vineyard Management
Terry Bates, Cornell University, New York
10:10 am – 10:20 am Questions & Answers
10:20 am – 10: 25 Break
Pests and Diseases
10:25 am – 10:45 am Early Grapevine Disease Detection with Proximal and Remote Sensing
Kaitlin Gold, Cornell University, New York
10:45 am – 11:05 am Suppressing Grapevine Diseases with Light
David Gadoury, Cornell University, New York
11:05 am – 11:25 am
Improving the Effectiveness and Lowering Costs of Mating Disruption for Mealybug
Kent Daane, University of California, Berkeley
11:25 am – 11:35 am Questions & Answers
11:35 am – 11:45 am Break
Afternoon Welcome
11:45 am – 11:50 am Afternoon Welcome
Patty Skinkis, Oregon State University, Corvallis
Crop Estimation and Other Decision-Making Tools
11:50 am – 12:10 pm Down to Earth Data for Decision Support: NASA Harvest(ing) 50 Years of Global Agricultural Monitoring Research to Support Producers
Alyssa Whitcraft, NASA Harvest, Maryland
Note: Hannah Kerner will participate in Q&A in place of Alyssa Whitcraft 
12:10 pm – 12:30 pm Improved Yield Prediction for Specialty Crops with Remote Sensing and Machine Learning Techniques
Yufang Jin, University of California, Davis
12:30 pm – 12:50 pm AI-Enabled Sensing for Crop Estimation in Vineyards
Mason Earles, University of California, Davis
12:50 pm – 1:10 pm Solving the Occlusion Problem and Learning by Example
Jaco Fourie, Lincoln Agritech, New Zealand
1:10 pm – 1:20 pm Questions & Answers
1:20 pm – 1:25 pm Break
Early Adopter Panel: Precision in Practice
1:25 pm – 2:10 pm Russ Smithyman, NGRA Board Chair

  • Richard Hoff, Mercer Ranches, Washington
  • Chad Vargas, NewGen Vineyard Services, Oregon
  • Thom Betts, Betts Farms, New York
  • Aaron Lange, Lange Twins, California
Closing Keynote
2:10 pm – 3:00 pm The Promise and Challenge of Precision Viticulture
Nick Dokoozlian, E. & J. Gallo Winery, California
  • Joint Q & A with Rob Bramley, CSIRO, Australia 
3:00 pm Donnell Brown, National Grape Research Alliance, California
Patty Skinkis, Oregon State University, Oregon