Extension and Outreach through UC Davis Viticulture and Enology On the road Events

By the end of the 2017-2018 funding cycle, we produced the four On the Road educational
events (Foothills, Santa Cruz, Temecula, and Sonoma) proposed in the 2017 AVF Extension and
Outreach grant. In addition, we have completed one of the proposed events for the 2018-2019
funding cycle (proposed in 2018), and we expect to complete all of the proposed events before
the end of the grant period (April 15, 2019).
The first On the Road event in the current (2018-2019) grant cycle took place in San Diego
County at the Center for the Arts, Escondido, on November 29, 2018. To determine the most
relevant topics to present, we worked closely with Carmen Gispert, the Viticulture Farm Advisor
for Riverside, San Diego, and San Bernardino counties. We were excited to have such a great
turnout, with 101 growers and vintners attending. David Block gave an introduction to winery
design, focusing on important considerations for quality through cleanability. Anita Oberholster
spoke about reuse of winery wastewater, Andrew McElrone spoke about deficit irrigation (what
is it, what are the benefits, and how do you do it?), Andrew Walker gave pointers on what to
consider when putting in a new vineyard, Kaan Kurtural talked about the practical aspects of
canopy management, and Carmen gave an update on her irrigation study.
We are planning to complete three more On the Road events before the end of the current
funding cycle. The first of the three events is scheduled to take place in Monterey County at the
Monterey County Cooperative Extension Office in Salinas. We worked with Area Viticulture
Advisor, Larry Bettiga, to determine topics and speakers of interest. Confirmed speakers
include: Neil McRoberts (Managing vector spread/virus diseases of grape), Anita Oberholster
(The effect of grapevine red blotch virus on wine quality), Megan Bartlett (New faculty member
introduction), Andrew McElrone (Understanding how grapevine roots respond and recover),
Andrew Walker (Current and future objectives of the grape breeding program at UC Davis),
Kaan Kurtural (Precision viticulture), and Larry Bettiga (Using plant material to promote early
vine development). The second event is scheduled on April 2, 2019, in Tulare County. We
originally worked with Ashraf El-Kereamy, Viticulture Farm Advisor for Kern County, to
determine relevant topics, however, he recently resigned from his position, so we are now
working with Gabriel Torres, the Viticulture Farm Advisor in Tulare County, to bring the
program to fruition. Confirmed speakers include Andrew McElrone, Anita Oberholster, Kendra
Baumgartner, Gabriel Torres, and Kaan Kurtural. We are arranging a final 2018-19 On the Road
program in Lake County, with Glenn McGourty, which will include presentations covering
smoke taint, sometime before April 15, 2019 (probably March 28, 2019). Other extension efforts
include organizing the 2018 Recent Advances in Viticulture and Enology and a couple of this
year’s On Campus programs including Bottling Line Readiness (March 2019) and the upcoming
Irrigation and Water Management program honoring Larry Williams (April 18, 2019).

Formation of a Mealybug Biocontrol Research Focus Group for Crush District 11

  1. Summary: “Formation of a Mealybug Biocontrol Research Focus Group for Crush District 11”

by PI Dr. Stephanie Bolton, Lodi Winegrape Commission

The project has successfully met its objectives as stated during the period of March 2017 –

April 2018. The Lodi Mealybug Biocontrol Research Focus Group met monthly at a local diner

to discuss vine mealybug biocontrol, researching topics such as which beneficial insects are

present and effective in our area, current grower perceptions of beneficial insects and mealybugs,

the likelihood of neighbor cooperation in vine mealybug management, ant control, Movento,

organic options for mealybugs, and other topics related to vine mealybug biocontrol and

management. The Focus Group became a center of learning and exploration where scientists,

extension personnel, growers, pest control advisors, and the industry opened communication

around the subject of mealybug biocontrol in efforts to develop real-world, applicable outreach

materials and events which would propel our local winegrape industry forward and decrease our

risk for further leafroll virus infections.

Through the conversations and learning experienced during the Focus Group monthly meetings,

along with information gathered via expert consultants and educational field trips, a strategy for

mealybug biocontrol in Crush District 11 was established. This simple strategy is:

  1. Don’t kill the good insects.
  2. Control the ants.
  3. Use pheromone mating disruption.

In Lodi, we are still generally in phase 1 where we are teaching growers how to keep their

beneficial insects alive through distribution of an easy-to-read chart based upon UC IPM

guidelines and local experience (available at lodigrowers.com). In August 2017 at a Mealybug ID

Field Day, about 120 growers had a fun time learning how to identify mealybugs which have been parasitized by the Anagyrus wasp, one of the two main biocontrol agents in our region. During the April 2018 Mealybug & Virus Outreach Meeting, about 150 growers learned the significant

role of ants in the vine mealybug and leafroll virus story. The Focus Group has planned ant bait

experiments for 2018 after finding that there is no economical, efficient ant control method

available for large acres of vineyards. While pheromone mating disruption is being used with

success in our region to decrease mealybug populations and to attract beneficial insects, it is still

cost-prohibitive for many growers. Growers were given mealybug traps donated by Suterra at the

April 2018 meeting, which they will bring back in May 2018 for a follow-up Mealybug Trap

Workshop. Thus, they are learning whether the male mealybug is present in their field and how

to use the traps, which is the first step towards neighborhood coordinated pheromone mating

disruption.

By taking the time to fully assess the current mealybug biocontrol management options in the

region and to learn more about the pathogen itself, future priorities for more targeted research on

a larger scale were best determined. Priorities include but are not limited to: discovering an

efficient and cost-effective ant control method for large acreage in Crush District 11, learning how to release Cryptolaemus beetles in our vineyards, and learning how to eliminate underground vine mealybugs following a leafroll virus infected vineyard rip-out.

Developing an Approach to Share Monitoring Data to Advance Coordinated Disease Management Efforts Among Grape Growers

Our objective is to provide technical support for data sharing among members of regional groups to advance coordinated disease management efforts. In this first of a proposed 2-year project, we conducted the following activities in support of that objective: (1) We investigated potential data sharing platforms and identified one that embodied many of the factors under consideration, including low cost, a simple user interface and robust sharing potential. (2) We worked with a grower group to implement this platform to share regional pest incidence data. (3) We collected intermittent and formal feedback on the functionality of the data-sharing platform. This feedback will be used to augment the data sharing protocol in year 2. (4) We processed historical data collected by a grower group and conducted a preliminary visualization and analysis to facilitate the translation of data into meaningful and actionable results. We intend to continue this analysis in the 2nd project year. (5) We engaged members of the regional groups to provide technical support for data-sharing platforms, share results of data animation and visualization, and are building potential for this approach to become self-sustaining.

Extension and Outreach through UC Davis Viticulture and Enology On the Road Events

At the end of the 2016-2017 funding cycle, we will have produced the four On-the-road educational events proposed in the AVF Extension and Outreach grant. In addition, we completed all proposed events for the 2015-2016 funding cycle, before the end of the grant period (as proposed), described in last year’s annual report.

The first On-the-road event in the current (2016-2017) grant cycle took place in Madera. Karen Block worked with Lindsay Jordan, Area Viticulture Advisor for Madera, Merced, and Mariposa counties, to determine topics of regional interest and invited individuals working in those areas to speak at this educational event. Turnout was not as high as expected, due to American Vineyard Magazine’s Fruit and Nut Expo occurring nearby in Fresno. We were not aware of this until four weeks before the event, and had other circumstances with scheduled speakers, so we were unable to reschedule. Those who did attend found it quite informative. Lindsay Jordan spoke about Alternative Winegrape Varieties for a Warm Climate, Anita Oberholster spoke about the Impact of Winery Wastewater Irrigation on Soil, Grape Nutrition, and Grape and Wine Quality, Ben Montpetit gave a summary of his background and the types of research he will pursue, Matt Fidelibus spoke about, “Shade from trellised vines as a weed suppressive cropping system,” David Block talked about cap management in red wine fermentations, and Kaan Kurtural spoke about the advantages of vineyard mechanization.

We are planning to complete three more On the road events before the end of the current funding cycle. The first event is scheduled to take place in Acampo, at the Constellation Woodbridge Winery, on February 28, 2017, the second is scheduled for March 24, 2017, in Napa County, at the Yountville Community Center, and the last is scheduled in Paso Robles at J. Lohr Vineyards and Wines, between March 20 and April 15, 2017. Karen Block has been working with Paul Verdegaal and Stephanie Bolton for the Lodi event; Monica Cooper, Michelle Novi, and Sonya DeLuca for the event in Napa; and Mark Battany and folks at J. Lohr for the Paso Robles event. The event in Lodi is focused on viruses and diseases and the speakers will be John Roncoroni, Maher Al Rwahnih, Kari Arnold, Monica Cooper, Neil McRoberts, and Anita Oberholster. For the Napa County event, the confirmed speakers are Kerri Steenwerth, Kaan Kurtural, Ben Montpetit, Andrew Waterhouse, Andrew Walker, and Anita Oberholster. Mark Battany and Karen Block are still working on dates and speakers for the Paso Robles On the road event.

Extension and Outreach Through UC Davis Viticulture and Enology On-The-Road Events

At the end of the 2014-2015 funding cycle we will have produced five On-the-road educational events. In addition, we hosted several industry-related events on the UC Davis campus. The first On-the-road educational event in this grant cycle took place in Lodi in April 2014. Like the previous Lodi event, it was held at the Woodbridge Winery in their barrel room. The general theme was water issues. The event was well attended, with approximately 60 attendees. The next On-the-road event will be in the Foothills. To determine what topics to present, we conducted a survey of growers and vintners in the region, consulted with the local farm advisor (Lynn Wunderlich) and visited potential host wineries. As a result of the background work, we are presenting an On-the-road event that will take place at Terra D’Oro Winery (Plymouth, CA) on Feb 27, 2015, with David Mills, Anita Oberholster, David Block, Linda Bisson and Lynn Wunderlich confirmed to speak. We have two more On-the-road events scheduled before the end of the funding cycle. One event is scheduled to take place at the Kearney Agricultural Research and Extension Center in Parlier on March 31, 2015, and the other is scheduled for April 1, 2015, at the University of California Cooperative Extension Office in Salinas. The event in Parlier will mainly address enology issues (as discussed during our visit to the area in early November 2014). The event in Salinas will cover mainly viticulture topics and enology related to viticulture. For the Parlier event we have confirmed David Block, Anita Oberholster, Dario Cantu and Andy Waterhouse and for the Salinas event, we have David Block, Anita Oberholster, Larry Bettiga and Dario Cantu. In addition, we occasionally help the Napa Valley Vintners with their educational events and have presentations by Sue Ebeler, Linda Bisson, and Anita Oberholster scheduled for February 4, 2015, at the Napa Marriott. We are also in the process of scheduling an educational event in Sonoma later in April 2015, as part of the next grant cycle. Other extension efforts building from AVF support of the IRM include: hosting and setting up seminars for the International Cabernet Symposium, the California Sustainable Winegrowing Alliance, National Grape and Wine Initiative, and co-chairing Recent Advances in Viticulture and Enology with Anita Oberholster. In November 2014, Anita Oberholster and Karen Block organized a tasting of wines irrigated with well versus recycled winery water for the Napa Valley Grapegrowers, as part of their Rootstock event. In addition, each year, Karen Block organizes the UC Davis Viticulture and Enology Unified Reception, which brings together 150-200 alumni, faculty, friends and students on Wednesday evening of the Unified Wine and Grape Symposium in Sacramento.

Developing and Evaluating Social Networking Tools for Viticulture

We sought to 1) determine how familiar our academic and industry colleagues were with blogs, Facebook, and Twitter, and provide training for them if necessary, 2) extend more viticultureinformation through social networking tools, and 3) develop some metrics to learn how often thetools were used, and by whom. Surveys distributed separately to core clientele, viticulture specialists and advisors in California, and out­of­state extension faculty, suggested that many academic and industry colleagues were potentially interested in using social networking tools to extend and receive viticulture information, but they needed training to learn how to use them, particularly in a professional context.

Therefore we provided social media training at several meetings throughout the state. Perhaps due in part to our training efforts, our sites have steadily attracted more users over time; the number ofpeople who ‘like’ our Facebook page has increased from 93 people in January 2010 to 249 people in January 2011, and our followers on Twitter have increased from 182 last January to 357 this January.  Further, our blog was accessed nearly 50,000 times in  2010 in December 2010 alone, our Facebook page was accessed more than 11,000 times.

We dramatically increased the content provided in 2010. For example, we sent 87  “tweets” in 2009 versus 272 tweets in 2010.  In 2010 we also began to use special software that allowed us to integrate, to some extent, our social media tools.  This provided content at varying levels of detail and may havehelped us expand our reach. We intend to further extend our reach by developing other types of content including video and pictures which can be shared on specialized social sites such as YouTube, and Flickr,respectively. Monitoring social media is complex, but we’ve learned that our sites are regularly accessed by menand women of a wideage range, from at least 20 different countries.The social aspect of these sites, especially Twitter, has facilitated sharing of information beyond our immediate users, thereby expanding their impact.

Developing and Evaluating Social Networking Tools for Viticulture

We sought to 1) determine how familiar our academic and industry colleagues were with blogs, Facebook, and Twitter, and provide training for them if necessary, 2) extend more viticulture information through social networking tools, and 3) develop some metrics to learn how often the tools were used, and by whom. Surveys distributed separately to core clientele, viticulture specialists and advisors in California, and out-of-state extension faculty, suggested that many academic and industry colleagues were potentially interested in using social networking tools to extend and receive viticulture information, but they needed training to learn how to use them, particularly in a professional context. Therefore we provided social media training at several meetings throughout the state. Perhaps due in part to our training efforts, our sites have steadily attracted more users over time; the number of people who ?like? our Facebook page has increased from 93 people in January 2010 to 249 people in January 2011, and our followers on Twitter have increased from 182 last January to 357 this January. Further, our blog was accessed nearly 50,000 times in 2010 and, in December 2010 alone, our Facebook page was accessed more than 11,000 times. We dramatically increased the content provided in 2010. For example, we sent 87 ?tweets? in 2009 versus 272 tweets in 2010. In 2010 we also began to use special software that allowed us to integrate, to some extent, our social media tools. This provided content at varying levels of detail and may have helped us expand our reach. We intend to further extend our reach by developing other types of content including video and pictures which can be shared on specialized social sites such as YouTube, and Flickr, respectively. Monitoring social media is complex, but we?ve learned that our sites are regularly accessed by men and women of a wide age range, from at least 20 different countries. The social aspect of these sites, especially Twitter, has facilitated sharing of information beyond our immediate users, thereby expanding their impact.

Enhancements to the National Grape Registry (NGR) Website

In 2010, FPS staff managed a solid start in this multi-year project to photograph significant representative plant parts (leaves, shoot tips and clusters) of the grapevine cultivars and clones on the National Grape Registry website. Photographic images of at least one plant part (leaves or shoot tips) were taken of 191 of the 900+ NGR cultivars. Photographs were taken of clusters and berries from 97 of the 1200 clones on the NGR site. Post-production processing of the 2010 images is still in progress, although preliminary images for some of the cultivars and clones has been posted on the NGR for viewing by the OWB and other industry members who are interested in this project. The next significant step is for Dr. Andy Walker to review the 2010 images for accuracy in depiction of cultivars and clones. The images that do not pass scrutiny will be rescheduled for new photographs should the project be granted funding in the 2011-2012 cycle. The portion of the project related to description of the grape clones that are in the pipeline at Foundation Plant Services is complete. The pipeline plant material includes new cultivars and clones that are still in the testing and disease treatment phase at FPS. Clonal profiles for 371 of these FPS selections (along with many associated varietal profiles) are now included on the NGR website under the tab entitled ?Vines in Progress?. These profiles inform the grape industry of cultivars and clones that will soon be released to increase the diversity of grapevine material available in the United States.

Development of an Enology Outreach Program

There has been a chronic underinvestment in extension and outreach for the wine industry. The specific goal of this proposal is the development of a comprehensive program for extension and outreach in enology. This comprehensive program includes an interactive web site that will serve both researchers in enology and winery personnel. With the plethora of information sources currently available on the internet, searching effectively and efficiently for pertinent and accurate information has become challenging. This site will function as a means to link researchers across the United States and internationally that have an active program or interest in enology. The aim of the site is to share information within the research and production communities, facilitate collaboration, eliminate unnecessary redundancy, and foster communication on issues of regional, national or global importance. The site was renamed ‘EnologyAccess’ ( http://enologyaccess.org/ ) and launched under this name with an inaugural webinar in August of 2008. In this past year we developed the interactive tools and social networking for the site (ea2) which will be launched in the next couple of months. We are actively migrating content to this site and providing links to extension specialist and researcher websites across the nation and the world. For this site to be more useful we will need to develop a stream of income that will support the site curation. This year we launched one of the signature programs of our new extension center, Wine Flavor 101. The first courses in this series were sold out and we received a response rate on the course questionnaire of over 70%. The surveys provided a wealth of ideas and constructive criticism for the programs which will assure their continued success. As we develop solid income streams we will be able to hire content curators and add more and more content to the site and offer an expanded line of programs. Progress on meeting our goals is slow but steady.

Development of an Enology Outreach Program

There has been a chronic underinvestment in extension and outreach for the wine
industry. The specific goal of this proposal is the development of a comprehensive web
site that will serve both researchers in enology and winery personnel. With the plethora
of information sources currently available on the internet, searching effectively and
efficiently for pertinent and accurate information has become challenging. This site will
function as a means to link researchers across the United States and internationally that
have an active program or interest in enology. The aim of the site is to share information
within the research and production communities, facilitate collaboration, eliminate
unnecessary redundancy, and foster communication on issues of regional, national or
global importance. In the current funding year an Implementation and Advisory
Committee for the Enology Extension Online web site was formed. The committee
consists of: Dr. James Harbertson (Washington State University), Dr. James Osborne
(Oregon State University), Dr. Brent Trela (Texas Tech University), Dr. Trevor Phister
(North Carolina State University) and Dr. Bruce Zoecklein (Virginia Tech). Dr. Bisson is
chairing the group and the committee is assisted by Kay Bogart. The Implementation and
Advisory Committee has designed the scope of the site, which is described in detail in the
request for continuing funding. In addition the group considered the best mechanisms for
creation and maintenance of the site. The site has been named ?Enology Extension
Online? and will be launched in April 2008.