SAES-422 Multistate Research Activity Accomplishments Report

Sections

Status: Approved

Basic Information

Participants

Terry Bradshaw, University of Vermont, terence.bradshaw@uvm.edu Horst Caspari, Colorado State University, horst.caspari@colostate.edu Matthew Clark, University of Minnesota, clark776@umn.edu Anne Fennell, South Dakota State University, anne.fennell@sdstate.edu Joe Fiola, University of Maryland, jfiola@umd.edu Candice Fitch-Deitz, Kansas State University, cfitchdeitz@highlandcc.edu Harlene Hatterman-Valenti, North Dakota State University, h.hatterman.valenti@ndsu.edu Scott Kohl, Kansas State University, skohl@highlandcc.edu Timothy Martinson, Cornell University, tem2@cornell.edu Jason Londo, Cornell University, jpl275@cornell.edu Esmaeil Nasrollahiazan, Michigan State University, nasroll2@msu.edu Gail Nonnecke, Iowa State University, nonnecke@iastate.edu Elsa Petit, University of Massachusetts , epetit@umass.edu Paul Read, University of Nebraska, pread1@unl.edu Margaret Smith, Cornell University, AA NE-1720, mes25@cornell.edu Dean Volenberg, University of Missouri, volenbergd@missouri.edu Dan Ward, Rutgers University, danward@njas.rutgers.edu Aude Watrelot, Iowa State University, watrelot@iastate.edu

Brief Summary of Minutes of Annual Meeting

The Annual Technical Committee meeting was co-hosted by Dean Volenberg of the University of Missouri Grape and Wine Institute, Columbia, Missouri and Mathew Clark of the University of Minnesota on 8 November 2021. The meeting was conducted virtually. Meeting was called to order and the meeting agenda presented. This was followed by brief introductions of attendees. The morning session consisted of state reports and Margaret Smith provided guidelines and deadlines for the grant proposal reapplication process. The afternoon session was devoted to clarifying objectives for the reapplication of the grant proposal entitled “Multi-state Coordinated Evaluation of Winegrape Cultivars and Clones”.

 

Data Collection Committee

Tim Martinson provided an update on the data collection committee. One of Tim’s goals was to establish a website that would include pertinent data generated from NE-1020 and NE-1720.

Although, Tim is retiring in early January 2022, he still has gone out of his way to help the NE-1720 group find an alternative to complete his goal.  Shortly after the Annual NE-1720 meeting, Tim contacted Matt Fidelibus at UC Davis about the potential of a collaborative database. Currently, Matt and some of his colleagues have developed a website that consists of cultivars of wine, table, raisin, and rootstocks focusing on Vitis viniferawith the goal of adding approximately 20 descriptions per year. This extension undertaking is being funded by NGRA under the NGRA extension chair Keith Striegler.  Matt is interested in a collaborative website that includes the NE-1720 data with the caveat if the NGRA is interested.

If the collaborative website moves forward or the NE-1720 group establishes their own website, the Data Collection Committee needs to determine the outputs.

Once again, the main question that needs to be addressed is what information on the cultivars evaluated in the NE-1020 and NE-1720 would be helpful to current and future grape growers.

 

Germplasm and Discovery Committee

In 2021, Missouri and Kansas established two selections of “loose clustered” Vignoles cultivars as well as the standard Vignole as a comparison. Tim Martinson presented information on the availability of irradiated Vignole germplasm at the annual meeting in 2018.  Briefly, a number of Vignole mutants were evaluated based on loose cluster architecture. Mutants were developed by Amanda Garris of the USDA. Approximately 1000 mutants were evaluated of which nine were selected for replicated trials. From these trials, Tim suggested that two mutants be evaluated in replicated trials in interested NE-1720 states. The propagated material was made available through Double A Vineyards in 2021. This is in congruence with the Objective 3 milestone: Propagate and receive cuttings for plantings at collaborator sites.

Joe Fiola suggested other grape materials for evaluation.

Matt Clark provided an update on potential breeding lines for evaluation. The advanced selection MN-1220 will likely be released soon. MN-1220 is a white wine grape for more southern climates compared to Minnesota. The Minnesota grape breeding program is also developing seedless table grape lines that may have a dual purpose for both fresh consumption and the wine industry.

Tim Martinson on behalf of Bruce Reisch also provided an update on selections from Cornell and are included in Tim Martinson’s state report for New York. Briefly,

  • 0207.02 – White wine grape
  • 0207.06 – White wine selection
  • 0208.09 – White wine grape
  • 0303.02 – White wine grape
  • 0514.06 – This is a highly disease resistant red wine selection

Missouri planted four of the NY selections in 2021. These selections are being made available by Amberg Grapevines.

NY03.0207.02 – This white wine grape has scored very well in wine tastings, with panelists mentioning bright acidity with notes of citrus, melon, apricot and peach. The vine has an excellent large canopy, some leaf phylloxera, and will need protection from bird depredation. The prediction for 50% bud kill is -15.7°F.

NY03.0207.06 – This white wine selection produces a good canopy with moderate resistance to foliar powdery and downy mildews. Fruit are mostly rot-resistance but some sour rot has been noted in some years. Wines have been highly ranked by tasting panels, with aromas described as melon, pear, spicy and pineapple, while the palate descriptors included good structure and body; and mentions of citrus, pineapple apple and Riesling-like characters. The predicted temperature for 50% bud kill is -16.9°F.

NY03.0208.09 – This white wine grape has been described as having citrus, tropical fruit, peach and pear characteristics in both the aroma and palate. It has been very well-liked by tasting panels. Vines have been moderately productive with good resistance to powdery mildew. Bird damage has been a problem and protection (netting) is needed. Some years, rachis necrosis was noted just prior to harvest. The predicted temperature for 50% bud kill is -15.4°F

NY04.0303.02 –This is a white wine grape, which produced the top–ranked white wine from vintages 2013 and 2016. Wine descriptors included muscat, peach, spicy, tropical fruit, mango, grapefruit, dried apricot, lychee, and passion fruit. The 2016 wine had Sauvignon blanc-like tropical fruit and green notes. These vines are productive and vigorous so far, with good resistance to downy and powdery mildews under a hybrid-type spray program. The predicted temperature for 50% bud kill is -15.5 °F.

NY06.0514.06 – This is a highly disease resistant red wine selection. This selection carries the Run1 / Rpv1 genes, as well as Ren2 (for powdery mildew resistance) from V. cinerea. Also has excellent resistance to bunch rot, and moderate resistance to black rot. The buds are moderately winter hardy, with expected temperature of 50% bud kill in mid-winter measured to be -16.4°F. Vines are on the small side and grafting on phylloxera-resistant stocks should be tested. Fruit yields are low, due to the use of many clusters for crossing each year. Wine descriptors are as follows: fruity with notes of blackberry, plum, cherry; slightly herbaceous, with green pepper noted; good body and medium tannin; also, some have detected chocolate notes.

Afternoon Session: Hosted by Matt Clark

The afternoon session focused on defining the objectives for the grant proposal reapplication.

Attendees were randomly assigned to break-out rooms. Each break-out room discussed and clarified one of the objectives for the grant proposal reapplication. After a period of time all the break-out room attendees re-joined in the main meeting to present their objectives. A lot of time was spent discussing what data needs to be collected for screening advanced breeder selections and what data needs to be collected for a replicated trial evaluation.

One of the limitations of screening advanced breeder selections is often there is limited cuttings, rooted cuttings or grafted material. Therefore, it was decided that advanced breeder selections would be screened at four different sites (states) that would fully encompass the climatic zones of participating states. Advanced selections that meet the merits of the screening process then could be propagated or cuttings distributed to other states for a full evaluation.

Attendees that volunteered to help Matt Clark with the grant proposal reapplication process were: Horst Casperi, Dean Volenberg, Anne Fennel and Tim Martinson.

Future Annual Meeting locations will be 2022 Kansas hosted by Scott Kohl and 2023 Michigan hosted by Esmaeil Nasrollahiazan.

Annual-Meeting-Report-NE-1720_dsv_01.07.22.pdf

Accomplishments

Short-term Outcomes: To enhance future facilitation of reporting I have taken the liberty of including the following information of subcommittees formed in 2017: Viticultural practices subcommittee chair, Joe Fiola; Data Collection subcommittee chair, Dan Ward; Outputs and Milestones chair, Tim Martinson; and Germplasm and Discovery chair, Matt Clark.

Outputs: State reports are included as appendix.

 

Activities:

Since the Annual Meeting was virtual there are no activities to report.

 

Milestones: A brief of what states have reported.

  • CO – Identified several cultivars with superior fall bud cold-hardiness
  • IA – Cultivar evaluations of MN- and Tom Plocher – cultivars
  • KS - Two-selections from North Dakota State University Grape Germplasm Enhancement Project established, ND054.27 and ND213 in 2020
  • ND – Continue to evaluate cultivars/selections with acceptable yield potential
  • NE – The grape cultivar Itasca identified as a suitable cultivar for grape production
  • NJ - Grapevine Pinot Gris Virus (GPGV) was discovered in vines used in the NE1720. Although vines had been imported through Foundation Plant Services new viruses are always being discovered.
  • NY – Trialed eight loose-clustered Vignole clones compared to standard Vignole selection. Two advanced selections available to NE-1720 participants
  • MA – Ten organic pesticides evaluated for efficacy
  • MI – Cold hardiness evaluated of different grape cultivars using differential thermal analysis
  • MN – Identified table grape breeding lines
  • MO – A new cultivar/advanced breeder selections evaluation trial established in April 2021
  • SD – A new 1.75 acre cultivar evaluation trial established
  • VT – Grape cultivars from the breeding program of Tom Plocher being evaluated

 

Seven states have established new plantings of grape cultivars, selections or clones. This is in congruence with Milestone objective 1 (2018).

Impacts

  1. There has been a substantial change in the cultivar mix in Colorado’s vineyards over the past 6-10 years. This change is the result of extreme cold events in December 2009, January 2013, and December 2013 causing large yield reductions in 2010, 2013, and 2014. Cold-tender Vitis vinifera cultivars were removed from about 20 % of Colorado’s vineyard area and replaced with more cold-hardy inter-specific cultivars. Approximately 50 % of that area was planted with cultivars tested in the NE-1020 / NE-1720 sites in Colorado. That percentage increases to nearly 80 % when cultivars evaluated by NE-1020 / NE-1720 collaborators are included. The record-breaking cold event on 26 October 2020 resulted in nearly 100 % bud kill on cold-tender Vitis vinifera cultivars which account for about 80 % of Colorado’s vineyard area. As a consequence, the 2021 grape production is predicted to drop by about 80 %. Almost all of the 2021 crop will come from cold-hardy, interspecific cultivars planted during the past 6-10 years.
  2. Kansas vineyards and wineries continually inquire about growth and winemaking data resulting from the 2013 Trial Plot as they expand their commercial plantings. Frontenac Gris, Brianna, Petite Pearl, Chambourcin, and Vignoles are the most popular among recent commercial plantings. Throughout the past year, Kansas industry representatives have expressed a desire to submit application(s) for AVA development. Recently, Highland has been approached to help lead the effort, beginning with grant writing and plans to cooperate with Kansas Departments of Agriculture and Commerce to create AVA(s). Ultimately, trust in Highland Community College Viticulture and Enology Program’s efforts and abilities are growing throughout the grape and wine industry in Kansas.
  3. Highland Community College’s ongoing efforts to operate the 456 Wineries business incubator has seen three new wineries emerge in different ways. One client is moving out to open their winery outside the incubator, one moved in and released wines in Oct 2021, and a third has committed to moving in during the spring 2022. The incubator continues to accelerate industry growth.
  4. A significant number of Nebraska grape growers have adopted cultivars tested under the aegis of NE 1720 (many tested initially as numbered selections). (See preceding listings noted in #1 and #5).
  5. Grapevine Pinot Gris Virus (GPGV) was discovered in vines used in the NE1720. Although vines had been imported through Foundation Plant Services new viruses are always being discovered. a. Over 100 growers and educators in the viticulture industry attended a symposium where they learned of the Grapevine Pinot Gris Virus (GPGV).
  6. Vignoles is one of the top varieties grown in MO, with significant plantings in IL, IND, OH, and NY. It is a mainstay of Bully Hill Vineyards in NY. Loose-clustered clones will significantly reduce losses due to cluster rots, and may require fewer fungicide sprays.
  7. This past year, one of our focus was educating growers about grapevine trunk diseases on new cultivars as we had an active grant to research the mechanism of the disease and ways to manage it. [PI: B. Goodell, Collaborators: J. Jellison, E. Petit, American Vineyard Foundation, 2019-2275 Role of LMW fungal metabolites in Eutypa dieback, 2019-2021, $70,000]. We have given one talk at a grape growers' meeting [Date: 1/13/2021 - Over zoom - Massachusetts Fruit Growers Association Annual Meeting 2021: "Through the grapevine in Massachusetts in 2020: updates and new research" - 100 attendees] to present the finding of our research. We have released one publication [Gabriel Perez-Gonzalez, Dana Sebestyen, Elsa Petit, Jody Jellison, Laura Mugnai, Eric Gelhaye, Norman Lee, Sibylle Farine, Christophe Bertsch, Barry Goodell. 2021. The Role of Low Molecular Weight Fungal Metabolites in Grapevine Trunk Disease Pathogenesis: Eutypa Dieback and Esca. Preprint]. Understanding the pathogenesis of grape trunk diseases (GTDs) is the key to the development of disease control and treatment.
  8. We received a Northeast SARE Farmer Grant to evaluate different ways to better protect grapes from cold. [PI Ian Modestow, Northeast SARE Farmer Grant, Protecting European Grape Vines from Cold Weather Damage in New England, 2020-2021 Award number: FNE20- 959-34268, Amount awarded: $13,698]. We have set up the trial in Fall 2020 and taken data on the effect of the different treatments in 2021. We have shown that Hybertex fabrics increased bud survival better than single or double plastic.
  9. We continued to monitor, at our experiment station plot, the timing of key developmental stages such as bud break, flowering and veraison on the various grape cultivars. Based on our findings, we would recommend Frontenac, La Crescent, Marquette, and St Croix for planting in western MA.
  10. This past year, an undergraduate student, Elsie Murphy, received a fellowship from the Center for Food, Agriculture and the Environment to work on a resistance to diseases in different grape varieties. One undergraduate was involved in the evaluation of organic products efficacy against downy mildew and Japanese beetles. Badge X2 (active ingredient: copper hydroxide and copper oxychloride) and LifegardWG (active ingredients: Bacillus mycoides isolate J*) were the most efficient organic fungicides against downy mildew. Surround was the most efficient pesticide against Japanese beetles. Two undergraduates were involved in the write up of 23 Grape Notes newsletters and the updates of the grape section of the New England Small Fruit Management Guide and the New England Wine Grape Growers' Resource Center.
  11. Providing cold hardiness updates and services that informed Michigan grape growers about the cold tolerance of a specific cultivar helped them respond to a weather event more proactively with mitigation strategies such as wind machines, heaters, or nanoparticle protectants. In 2021, by providing cold hardiness updates, the growers adopted compensatory pruning strategies to minimize crop loss due to the cold event in NW Michigan.
  12. Reached over 120 grape grower and wine producers on best practices for growing cold hardy grapes including presentations from NE1720 state representatives and Extension personnel
  13. The establishment of the wine grape cultivar trial will inform the Missouri grape and wine industry of the potential of grape cultivars that are not currently cultivated in Missouri. Inclusive in the trial are nine V. vinifera wine grape cultivars. Additionally, the cultivar trial will provide grape breeders much needed data on performance of advanced breeder selections. The cultivar trial is dynamic which will result in grape cultivars or breeder selections being added and removed over time.
  14. The establishment of a replicated trial of grapevine cultivars infected with no viruses, GRBV, GLRaV-3 or the combination of GRBV with GLRaV-3. The results will have important implications for Missouri grape growers since a recent survey of commercial vineyards throughout Missouri determined that GLRaV-3 and GRBV were present in 53% and 35% of the samples, respectively. Yet, most all infected grape cultivars except Crimson Cabernet (Norton x Cabernet Sauvignon) do not display typical GRBV or GLRaV-3 symptomology as documented in V. vinifera cultivars.
  15. Changing climatic conditions in fall are showing different strengths and weaknesses in cold climate cultivars in SD industry vineyards requiring expanded testing for freezing tolerance, dormancy and chilling fulfillment relative to vineyard.
  16. In the 1990s, there was no grape or wine industry in Vermont, but by 2016, winegrapes were grown on 165 acres and wine was valued at over $5 million annually. Continued refinement of cultivar breeding and selection for unique cold-climate regions will increase the quality of wines made and the economic impact of wineries in the region.

Publications

Aipperspach, A., J. Hammond, and H. Hatterman-Valenti. 2020. Utilizing pruning and leaf         removal to optimize ripening of Vitis riparia-based 'Frontenac Gris' and 'Marquette' wine grapes in the northern Great Plains. Horticulturae 6, 18; doi:10.3390/horticulturae6010018.

Bradshaw, T. (lead author). 2021. Grapes and Wine. Vermont Sustainable Jobs Fund Farm to Plate 2.0 Product Brief. Issue briefs drafted by statute for presentation to Vermont legislature in 2019-2020 session.

Bradshaw, T. UVM Fruit Website (http://www.uvm.edu/~fruit). Outreach website for tree fruit and viticulture-related horticultural and IPM information for commercial growers. Affiliated blog archives 12 email postings made to grape producer listserv (275 subscribers) during reporting period.

Gabriel Perez-Gonzalez, Dana Sebestyen, Elsa Petit, Jody Jellison, Laura Mugnai, Eric Gelhaye, Norman Lee, Sibylle Farine, Christophe Bertsch, Barry Goodell. 2021. The Role of Low Molecular Weight Fungal Metabolites in Grapevine Trunk Disease Pathogenesis: Eutypa Dieback and Esca. Preprint

Hazelrigg, A., T. Bradshaw and G. Maia. 2021. Disease Susceptibility of Interspecific Cold-Hardy Grape Cultivars in Northeastern U.S.A. Horticulturae 7(8): 216. Special issue on Grape Responses to Abiotic and Biotic Stresses.

Moreira, L. and M. Clark (2021) Embryo rescue of cold-hardy table grapes. HortScience 56(9): 1059-1065.

Olson, J., and M. Clark. 2021. Characterization of Anatomical and Physiological Effects of Variegation Mutation on Grapevine. HortScience 56(10): 1251-1257.

Sabbatini, P. and E. Nasrollahiazan. 2021. Freezing stress, cold hardiness and managing winter damaged vines. MSU Extension Website.

Schoelz, J., D. Volenberg, M. Adhab, V. Klassen, C. Spinka, and M. Al Rwahnih. 2021. A Survey of Viruses Found in Grapevine Cultivars Grown in Missouri. Am J Enol Vitic 72:73-84.

Svyantek, A., B. Kose, J. Stenger, C. Auwarter, and H. Hatterman-Valenti. 2020. Cold-hardy grape cultivar winter injury and trunk re-establishment following severe weather events in North Dakota. Horticulturae6(4): 1–15.

Ware, L., Garofalo, E., Petit, E., and Piñero, J.C. 2021. Does the Red Color Enhance Spotted Wing Drosophila Response to Traps Baited with Diluted Concord Grape Juice? Fruit Notes 86: 15-16.

Watrelot, A. 2021.  Tannin content in Vitis species red wines quantified using three analytical methods. Molecules. 26(16):4923 (11pp)

Yilmaz T., D. Alahakoon, and A. Fennell. 2021. Freezing tolerance and chilling fulfillment differences in cold climate grape cultivars. Horticulturae 7(1):4

Yilmaz T., And A. Fennell. 2021. Spur and short cane pruning influence bud viability, yield, and fruit quality. Proceedings of the South Dakota Academy of Science 100:95-105.

Yin, L., A. Karn, L. Cadle-Davidson, C. Zou, A. Underhill, P. Atkins, E. Treiber, D. Voytas, and M. Clark. 2021. Fine mapping of leaf trichome density revealed a 747-kb region on chromosome 1 in cold-hardy hybrid wine grape populations. Frontiers in plant science 12: 150.

Yin, L., E. Burkness, W. Hutchison, and M. Clark. 2021. Effects of Foliar Phylloxera (Hemiptera: Phylloxeridae) Infestations on Wine Grape Photosynthesis, Yield, and Fruit Quality. Journal of Entomological Science 56(4): 504-518.

 

Scientific and Outreach Oral Presentations (relative to NE 1720 activities):

Caspari, H. 2/22/2021: Retraining vines after cold injury. Webinar.

Clark, M. 2021. Panelist: Future Grape Cultivars for Eastern North America. ASEV-ES Virtual Conference.

Clark, N. and S. Kohl. 7/24/2021. Home Winemaking Workshop.  Riley County Fair.  Manhattan, KS. 8 Attendees.

Fennell, A. 2021. Cold climate cultivars for upper Midwest. Fermentation, Brewing and Spirits class.

Fennell, A. 6/26/2021. Field tour of grape genetics.  Brookings Area Master Gardeners Tours.

Fennell, A. 9/13/2021. Cold climate cultivars fruit characteristics.  Local Foods Education Center, Brookings SD. 

Fitch-Deitz, C. and S. Kohl. 11/9/2021. NE1720 Annual Conference host. 25 Attendees.

Fitch-Deitz, C. 2/8/2021. Pruning Workshop.  Dover, KS. 13 Attendees.

Fitch-Deitz, C, N. Clark, and S. Kohl. 7/27/2021. Viticulture and Enology Field Day.  Wamego, KS.  28 Attendees.

Kadium, V., A. Svyantek, J. Stenger, S. Bogenrief, C. Auwarter, and H. Hatterman-Valenti. 2020. Diallel populations representing NDSU-GGEP. Proc. North Dakota Acad. Sci. 74:44.

Kohl, S.  4/26/2021. Grapes and Wine in Kansas.  Kansas Academy of Nutrition and Dietetics. Wamego, KS. 48 Attendees.

Kohl, S.  Winemaking in Kansas. 6/10/2021. Lawrence Brewing Guild Quarterly Meeting.  Lawrence, KS. 34 Attendees.

Kohl, S.  7/30/2021. Building an On-Ground V&E Program from Scratch.  Zoom with Pellissippi State Community College and Tennessee industry representatives. 5 Attendees.

Kohl, S. 9/3/2021. Emcee, Kansas Grape Stomp.  Kansas State Fair.  Hutchinson, KS. 80 Attendees.

Martinson, T. July 25, 2013. Testing Loose-clustered Vignoles clones. (Presenter Only) Lake Erie Regional Grape Program Summer Conference, Cornell University and Penn State University, Portland, NY.

Moreira, L., Z. Vickers, E. Treiber, A. Andresen, M. Clark, and A. Hegeman. 8/7/2021. A procedure to investigated flavor in large grape samples. ASHS Conference. Denver, CO.

Nasrollahiazar, E. 3/23/2021. Michigan Statewide Grape Spring Kickoff. Webinar.

Nonnecke, G. 8/11/2021. Field day and Workshop – Topics: grape production and berry analysis used for harvest determination of cold-climate cultivars.  Iowa State University, Horticulture Station, Ames, IA.  25 Attendees.

Nonnecke, G. 8/3/2021. Field day and Workshop – USDA, Iowa Farm Service Agency Loss Adjuster Training. Topics: grapevine biology, production, and management of Iowa vineyards.  Iowa State University, Horticulture Station, Ames, IA. 12 Attendees.

Petit, E. 1/13/2021 - Over zoom - Massachusetts Fruit Growers Association Annual Meeting 2021: "Through the grapevine in Massachusetts in 2020: updates and new research" -  about 100 attendees

Petit, E. 4/13/2021 - Over zoom - Fruit Twilight Meeting – “April updates on viticulture in MA” – about 100 attendees

Petit, E. 5/6/2021 - Over zoom - Fruit Twilight Meeting - “May updates on viticulture in MA” – about 100 attendees

Petit, E. 7/14/2021 - In person at Clarkdale Fruit Farms - Massachusetts Fruit Growers Association – “Midyear updates on field trials on grapes” – about 100 attendees

Petit, E. 7/22/2021- In person at Cold Spring Orchard - Summer Scholars Field Trip - “Trial on disease resistance in the NE1720 plot” – about 50 attendees

Petit, E. 1/30/2021 - Over zoom - MassAggie pruning workshop 2021 – about 90 attendees

Read, P. 1/25/2021. New UNVP Research Results. Nebraska Winery and Grape Growers Association Annual Conference.

Read, P. 3/15/2021. University of Nebraska Viticulture Program Progress Report. Nebraska Grape and Wine Board (Nebraska Department of Agriculture).

Read, P. 5/14-15/2021. The University of Nebraska Viticulture Program. NWGGA’s “Toast Nebraska” public wine showcase event.

Read, P. 7/19/2021. Viticulture Field Day. Topics: trellising, insect management and vineyard floor management for newly adopted cultivars.

Read, P. 9/29/2021. Nebraska: the Next Napa Valley?. Northeast Lincoln Kiwanis Club.

Read, P. 10/29/2021. Wines 101. University of Nebraska Alumni Women’s Leadership Group. 60 Attendees.

Read, P. 11/5/2021. Nebraska’s Burgeoning Grape and Wine Industry. University of Nebraska LEAD 39 Class of young developing agricultural leaders.

Svyantek, A. and H. Hatterman-Valenti. 7/29/2020.  Observations on inheritance of lacinate leaves in hybrid grapevine populations derived from ‘Chasselas Cioutat’. American Society of Enology and Viticulture and American Society of Enology and Viticulture Eastern Section Virtual Conference.

Volenberg, D. 2021. Grape IPM Reports. https://gwi.missouri.edu/IPMreports/index.htm

Ward, D. 2021. Grape growers and educators in the viticulture industry attended a symposium where they learned of the Grapevine Pinot Gris Virus (GPGV). Over 100 attendees.

Wise, A. 2020. Performance of Selections in the Long Island Wine Grape Variety Trial. Presentation slides online.

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