Professor

she/her

Patricia.Skinkis [at] oregonstate.edu

Office: 541-737-1411

Dr. Skinkis' research program focuses on whole plant physiology studies on vine vegetative vigor management, physiology of vine balance, and vineyard management impacts on fruit composition and wine quality. Her research also includes work on yield management, fine-tuning canopy management methods, fruitfulness, sustainable viticulture production, and understanding production factors that drive implementation of vineyard management practices. As Extension Specialist, Patty develops educational programs and informational publications for the Oregon industry statewide. Some of her outreach efforts include bringing industry members together in technical groups to allow information exchange between university and industry on new research results and innovations.

Current Research Program: Member of the core faculty of the Oregon Wine Research Institute. The following video summarizes OWRI research activities:

Patricia Skinkis, Viticulturist

At OSU

Affiliated with:

Horticulture Extension

Headquarters:

OSU Main Campus

Career Links:

Department of Horticulture

OSU Extension Wine Grapes

Oregon Wine Research Institute

High Resolution Vineyard Nutrition Research Project

Lab Group:

I accept graduate students for Horticulture

I can serve on graduate committees

Student(s):

Evangeline Jorjorian

Courses Taught:

Hort 454: Principles & Practices of Vineyard Production (2008 - present)
Hort 481/581: Horticultural Production Case Studies (2018, 2019)

Do you advise nonthesis students?:

Yes

Biography

I am the statewide Viticulture Extension Specialist and Professor in the Horticulture Department at OSU. As an Extension Specialist, I spend the majority of my time developing and delivering research information and educational outreach materials for the commercial wine grape industry in Oregon. As part of my viticulture program, I conduct applied research that impacts the commercial wine grape industry and contributes to the broader knowledge of viticulture and grapevine physiology. I also teach one upper-division vineyard production course in the Department of Horticulture. I train both undergraduate and graduate students through my viticulture lab.

Professional Accomplishments

Credentials:

Ph.D. Horticulture (Viticulture), Purdue University

B.S. Horticulture, University of Wisconsin – River Falls

Professional Affiliations:

American Society for Enology and Viticulture (ASEV)

American Society for Horticultural Science (ASHS)

International Society for Horticultural Science (ISHS)

American Wine Society (AWS)

Oregon State University Extension Association (OSUEA)

Epsilon Sigma Phi (ESP)

Employment:

2019 - present: Professor & Viticulture Extension Specialist, Oregon State University

2013 - 2019: Associate Professor & Viticulture Extension Specialist, Oregon State University

2010 - present: Core faculty member of Oregon Wine Research Institute (OWRI) at Oregon State University

2007 - 2012: Assistant Professor & Viticulture Extension Specialist, Oregon State University

2003 – 2006: Graduate Research Assistant, Department of Horticulture, Purdue University

Education:

Ph.D. Horticulture (Viticulture), Purdue University, 2006

B.S. Horticulture, University of Wisconsin – River Falls, 2002

Service:

Service to the Profession

President, American Society for Enology and Viticulture, 2020-2021

First Vice President, American Society for Enology and Viticulture, 2019-2020

Second Vice President, American Society for Enology and Viticulture, 2018 - 2019
Director, Board of Directors of American Society for Enology and Viticulture, 2009-2012; 2015-2018

Member, National Clean Plant Network Grapes Tier 2 Advisory Committee, 2020 - present

Member, Extension and Outreach Committee, National Grape Research Alliance, 2023 - present

Member, Integrated Production Systems Committee, National Grape Research Alliance, 2017- 2023

Associate Editor, American Journal of Enology & Viticulture & Catalyst: Discovery into Practice, 2017- present

Co-chair, Willamette Valley Viticulture Tech Group, 2008-present

Member, technical committee, Low-Input Viticulture & Enology (LIVE) certification program, 2008-present
Member, Oregon Wine Symposium planning committee, 2007-present

Member, National Viticulture & Enology Extension Leadership Working Group 2007-present

University Service

Member, College of Agricultural Sciences Promotion & Tenure Committee, 2023

Chair, Department of Horticulture Promotion & Tenure Committee, 2020-2021, 2021-2022

Member, Department of Horticulture Promotion & Tenure Committee, 2019-2022

Lead, OSU Extension Wine Grape Content Team, 2018 - present

Member, Oregon Grape Improvement Committee, 2014 - present

Core Faculty Member, Oregon Wine Research Institute, 2010 - present

Chair, OSU Viticulture Extension Working Group, 2007 - present

Member, curriculum committee, Horticulture Dept OSU, 2007-2021
Member, search committees for faculty and staff positions within the Department of Horticulture and Oregon Wine Research Institute (2007-2016, 2022-2023)

My Awards

Honors and Awards:

Mid-Career Service Award, Epsilon Sigma Phi (ESP) - 2020
Extension Distinction Award, American Society of Enology and Viticulture (ASEV) - 2018
Outstanding Young Alumni Award, University of Wisconsin-River Falls - 2017
Early Career Service Award, Epsilon Sigma Phi (ESP) - 2016
Visionary Horticulturist Award, American Society of Horticultural Science (ASHS) eXtension Working Group - 2014
Outreach & Engagement Award, Oregon State University - 2012
Outstanding Service Award, Oregon Wine Board - 2011
Savery Young Faculty Award, Oregon State University College of Agricultural Sciences – 2010
Search for Excellence Award, Oregon State University Extension Association – 2009
Shining Star Award, Ronald E. McNair Post-Baccalaureate Achievement Program – 2008

My Publications

Proceedings and Conference Presentations:

Schuster, J.D. and P.A. Skinkis. 2022. Evaluating the Effects of Rootstocks on Mature, Dry-Farmed Pinot Noir Vines. American Society for Enology and Viticulture National Conference, San Diego, CA, July 19-22, 2022. Role: PI, co-author, graduate mentor; student presented oral presentation.

Lange, M.R. and P. A. Skinkis. 2022. First Year Effects of Vineyard Floor Management on Dry-Farmed Pinot Noir Vine Performance in Different Soil Types. American Society for Enology and Viticulture National Conference, San Diego, CA, July 19-22, 2022. Role: PI, co-author, graduate mentor; student won Best Viticulture Poster Award.

Skinkis, P.A., M.R. Lange, A. Gallagher, and R.P. Schreiner. 2022. Different Soil Types Modulate Pinot Noir Vine Growth and Fruit Composition in Oregon’s Willamette Valley. American Society for Enology and Viticulture National Conference, San Diego, CA, July 19-22, 2022. Role: Lead PI, author, and presenter.

Hoffman, S., R. Martin, P. Skinkis, E. Tomasino, and J. Osborne. 2022. Grapevine Red Blotch Associated Virus (GRBaV) Impact on Oregon Pinot Noir Quality. International Cool Climate Wine Symposium, St. Catharines, Ontario, Canada, July 17-21, 2022. Role: co-PI, co-author, main viticulture project lead.

Skinkis, P.A. and K.R. McLaughlin. 2021. Improved Pinot Noir Yield Estimation Method Allows Earlier Crop Forecasting. American Society for Horticultural Science Annual Conference, Denver, Colorado, August 5-9, 2021.

Huang, L., P. Skinkis, J. Osborne, Q. Zhou, Y.L. Qian, M.C. Qian. 2021. Impact of Early Leaf Removal Treatment on Aroma Profiles of Wine Made from Grapevine Red Blotch Disease Infected Grapes. American Society for Enology and Viticulture National Conference. June 22-24, 2021. Online. (poster)

Huang, L., J. Li, Y.L. Qian, P. Skinkis, and M.C. Qian. 2021. Impact of Pinot Noir Crop Load Metrics on Wine Quality. American Society for Enology and Viticulture National Conference. June 22-24, 2021. Online. (poster)

Huang, L., P. Skinkis, J. Osborne, Q. Zhou, Y.L. Qian, and M.C. Qian. 2021. Impact of Abscisic Acid Treatment on Composition of Wine Made from Grapevine Red Blotch Disease Infected Grapes. American Society for Enology and Viticulture National Conference. June 22-24, 2021. Online.

Litwin, J.A., R. Martin, and P.A. Skinkis. 2019. Effects of Red Blotch Disease on Pinot noir under Oregon's cool climate conditions. American Society for Enology and Viticulture Annual Conference, Napa, California, June 17-20, 2019.

DuBois, A., J. Osborne, P. Skinkis, and E. Tomasino. 2019. Comparing Pinot Noir wine sensory perception and yield: A study over five vintages (2012 to 2016). American Society for Enology and Viticulture Annual Conference, Napa, California, June 17-20, 2019.

Schreiner, R.P., J. Osborne, and P.A. Skinkis. 2019. Nitrogen requirements of Pinot noir based on growth parameters, must composition, and fermentation behavior. American Society for Enology and Viticulture Annual Conference, Napa, California, June 17-20, 2019. (Invited, award presentation)

Skinkis, P.A.. Engaging industry citizen scientists to address fundamental production issues. American Society for Enology and Viticulture Annual Conference, Monterey, California, June 18-21, 2018.

Reeve, A.L., P.A. Skinkis, and R.P. Schreiner. ‘Pinot noir’ yield potential and nutrient reserves under long-term vineyard floor management. American Society for Enology and Viticulture Annual Conference, Monterey, California, June 18-21, 2018.

Ulmer, M.R., P.A. Skinkis, and R.P. Schreiner. Vine vigor influences ‘Pinot noir’ bud fruitfulness to a greater extent than pruning and N practices. American Society for Enology and Viticulture Annual Conference, Monterey, California, June 18-21, 2018.

Tian, T., R.P. Schreiner, P.A. Skinkis, J. Osborne, and E. Tomasino. Comparing nitrogen addition in the vineyard versus the winery in Pinot noir and Chardonnay. American Society for Enology and Viticulture Annual Conference, Monterey, California, June 18-21, 2018.

Rossdeutch, L., L. Deluc, R.P. Schreiner, and P.A. Skinkis. Developing a model system to identify main mechanisms involved in nitrogen growth responses of grafted grapevines. American Society for Enology and Viticulture Annual Conference, Monterey, California, June 18-21, 2018.

Schreiner, R.P., T. Tian, J. Lee, P.A. Skinkis, J. Osborne, E. Tomasino and M. Qian. Comparing Nitrogen Fertilization in the Vineyard versus Supplementation in the Winery in Pinot Noir and Chardonnay. American Society for Enology and Viticulture Annual Conference, Bellevue, Washington, June 26-29, 2017.

Skinkis, P.A. Impact of cluster thinning on ‘Pinot noir’ fruit quality across a large scale, multi-site study. American Society for Horticultural Science Annual Conference, Atlanta, Georgia, August 8-11, 2016. Abstract and video.

Reeve, A.L., P.A. Skinkis, and R.P. Schreiner. Influence of woody lateral shoot presence on ‘Pinot noir’ bud fruitfulness. American Society for Horticultural Science Annual Conference, Atlanta, Georgia, August 8-11, 2016. Abstract and video.

Reeve, A.L., P.A. Skinkis, and R.P. Schreiner. High vine vigor promotes fruitfulness through increased inflorescence primordia development in Pinot noir. 9^th Cool Climate International Cool Climate Wine Symposium. Brighton, England, May 26-28, 2016.

Tomasino, E., J. Osborne, and P. Skinkis. Consumer preference of Oregon Pinot noir wines from different crop levels. 11^th Pangborn Sensory Science Symposium. Gothenburg, Sweden. August 23-27, 2015.

Feng, H., P. Skinkis, and M. Qian. 2015. The Effect of Cluster Zone Leaf Removal on C13-norisprenoids in Pinot noir Grape and Wine. Vino Analytica Scientia (IX IVAS). Trento, Italy. July 14-17, 2015.

Yuan, F., P. Skinkis, and M. Qian. 2015. Carotenoid and C13-norisoprenoid composition of Pinot noir grapes from vines of differing vine balance. American Society for Enology & Viticulture National Conference. Portland, OR. June 17-18, 2015.

Yuan, F., P. Skinkis, and M. Qian. 2015. Pinot noir wine aroma composition as a result of changes in vine balance. American Society for Enology & Viticulture National Conference. Portland, OR. June 17-18, 2015.

Schreiner, R.P., J. Lee, P. Skinkis, J. Osborne, M. Qian, E. Tomasino, A. Navarrete, and F. Yuan. Balancing vine nutrient status: Finding the ‘sweet spot’ for nitrogen, phosphorus and potassium supply in Pinot noir. 2^nd International Symposium on Nitrogen in Grapes and Wine. Portland, OR. June 16, 2015.

Stafne, E., R.L. Burrows, M.W. Fidelibus, L. Greer, P. Jenkins, K. Ker, M. Moyer, P. Skinkis, and H. Walter-Peterson. Reach, Engagement, and Impact of eViticulture and the eXtension Grape Community of Practice. American Society for Horticultural Science. Orlando, FL. July 28-31, 2014.

Reeve, A.L., P.A. Skinkis, J. Lee, and J.M. Tarara. Influence of vine vigor and crop level on ‘Pinot noir’ vine growth, nutrition, fruitfulness, and fruit composition. American Society for Enology & Viticulture National Conference. Austin, TX. June 23-27, 2014.

Navarrete, A.M., P.A. Skinkis, and R.P. Schreiner. Evaluating Canopy Leaf Area Sampling Protocols for VSP Canopies. American Society for Enology & Viticulture National Conference. Austin, TX. June 23-27, 2014.

Schreiner, R.P., J. Lee, P. Skinkis, J. Osborne, M. Qian, and A. Navarrete*. A Greater Understanding of Nutrient Supply for Pinot noir Production. American Society for Enology & Viticulture National Conference. Austin, TX. June 23-27, 2014.

Dreves, A.J., P. Skinkis, J.C. Lee, and A. Cave. From clusters to pomace: Drosophila suzukii's role in Oregon Grape Vineyards. Entomological Society of American Pacific Branch Meeting. Tuscon, AZ. April 6-9, 2014.

Skinkis, P.A, S. Laverty, and J. Osborne. Understanding student perceptions and industry expectations for viticulture and enology careers. American Society for Horticultural Science Annual Conference. Palm Desert, CA. July 22-25, 2013.

Skinkis, P.A., A.J. Vance, and A.L. Reeve. Impact of yield management practices on vine growth and fruit composition of Oregon Pinot noir. American Society for Horticultural Science Annual Conference. Palm Desert, CA. July 22-25, 2013.

Schreiner, R.P., P.A. Skinkis, and J. Lee. Understanding and managing flower necrosis in grapevines. American Society for Horticultural Science Annual Conference. Palm Desert, CA. July 22-25, 2013.

Howland, A.D., P.A. Skinkis, and I.A. Zasada. Spatial distribution of plant-parasitic nematodes in semi-arid vineyards of the Pacific Northwest. American Society for Horticultural Science Annual Conference. Palm Desert, CA. July 22-25, 2013.

Skinkis, P.A., E. Stafne, and C. Lake. eViticulture as a Tool for Educating Future Grape Industry Professionals through Traditional and Nontraditional Teaching. American Society for Horticultural Science Annual Conference. Palm Desert, CA. July 22-25, 2013.

Lee, J. and P.A. Skinkis. Leaf removal in cool seasons enhances ‘Pinot noir’ anthocyanins. American Society for Enology & Viticulture National Conference. Monterey, CA. June 24-27, 2013.

Reeve, A.L., P.A. Skinkis, J. Lee, J.M. Tarara, and A.J. Vance. Shifts in fruitfulness and crop load of ‘Pinot noir’ in response to nitrogen depletion. American Society for Enology and Viticulture National Conference. Monterey, CA. June 24-27, 2013.

Curtis, M.A., P.A. Skinkis, R.P. Schreiner. Managing cover crop residues for establishment of productive vineyards. 61^st German Grape & Wine Congress, International – Intervitis Interfructa Congress, Stuttgart, Germany. April 23-27, 3013.

Skinkis, P.A. and W.F. Mahaffee. Complete cluster zone leaf removal conducted early in berry development helps reduce disease and increase fruit composition during cool seasons in Oregon. American Society for Enology & Viticulture National Conference. Portland, OR. June 20-21, 2012.

Vance, A.J. and P.A. Skinkis. Determining the impacts of crop thinning on vine vigor and fruit composition in Oregon Pinot noir. American Society for Enology & Viticulture National Conference. Portland, OR. June 20-21, 2012.

Curtis, M., L. Fredrikson, R.P. Schreiner, and P. Skinkis. Management of cover crop residues for the establishment of productive vineyards. American Society for Enology & Viticulture National Conference. Portland, OR. June 20-21, 2012.

Feng, H.*, F. Yuan, P. Skinkis, and M.C. Qian. Effect of cluster zone leaf removal on grape sugar, acids, carotenoids and volatile composition. American Society for Enology & Viticulture National Conference. Portland, OR. June 20-21, 2012. r

Feng, H., P. Skinkis, and M.C. Qian. Effect of alleyway cover crop management on Pinot noir wine volatile composition. American Society for Enology & Viticulture National Conference. Portland, OR. June 20-21, 2012.

Vance, A. and P. Skinkis. Determining the impacts of crop thinning on vine vigor and fruit quality in Pinot Noir (Year 1). American Society for Enology & Viticulture National Conference. Monterey, CA. June 22-23, 2011.

Feng, H., P. Skinkis, and M. Qian. Cover crop management on free and bound volatiles of cv. Pinot noir grapes. American Society for Enology & Viticulture National Conference. Monterey, CA. June 22-23, 2011.

Fredrikson, L. and P.A. Skinkis. Managing cover crops to control weeds, conserve soil moisture, and enhance growth of establishing vines in Oregon's Willamette Valley. American Society for Horticulure Science Annual Conference. Palm Desert, CA. August 2-5, 2010.

Fredrikson, L., P.A. Skinkis, and R.P. Schreiner. Effects of cover-crop management on weed control, soil moisture, and vine growth in establishing vines. International Cool Climate Symposium. Seattle, WA. June 20-24, 2010.

Skinkis, P.A. Reducing Pinot noir vine vigor in a cool climate vineyard using permanent grass cover crop management.” 60^th German Grape & Wine Congress, International – Intervitis Interfructa Congress, Stuttgart, Germany. March 24-28, 2010.

Skinkis, P.A. and M. Qian. Influence of alleyway management on vine vigor and fruit quality in Oregon’s Willamette Valley. American Society for Enology and Viticulture Annual Conference, Napa, CA. June 23-26, 2009.

Fredrikson, L. and P. Skinkis. Effects of cover crop management on vine development and fruit quality of Pinot noir. American Society for Enology and Viticulture Annual Conference, Portland, OR. June 17-20, 2008.

Walton, V.M., A. Dreves, A. Gadino, U. Chambers, and P. Skinkis. Biology and IPM of rust mites in Oregon and Washington vineyards. Western IPM Conference. Portland, OR. December 2008.

Dreves, A.J., V. Walton, A. Gadino, P. Skinkis, and G. Fisher. Relationship between rust mites, Calepitrimerus vitis (Acari: Eriophyidae), bud mites Colomeris vitis (Acari: Eriophyidae) and short shoot syndrome in Oregon vineyards. Entomological Society of America Annual Meeting. San Diego, CA. Dec. 9-12, 2007.

Skinkis, P.A. 2007. Influence of cluster sunlight exposure on monoterpene accumulation in the interspecific hybrid ‘Traminette.’ American Society for Enology and Viticulture Annual Conference, Reno, NV. June 20-21, 2007.

Bordelon, B.P., P.A. Skinkis, and P.H. Howard. Impact of training system on vine performance and fruit composition of Traminette. American Society for Enology and Viticulture-Eastern Section Annual Meeting, Lehigh Valley, PA. July 15-17, 2007.

Google Scholar

Outreach and Extension

Extension Service Site Publications

(2013) How to Measure Grapevine Leaf Area Leaf area measurements are used to determine areas of high or low vigor in a vineyard. It is also a way to calculate vine balance.
(2013) The Role of Canopy Management in Vine Balance Canopy management is critical to successful winegrape production. Canopy management begins with vineyard design and includes decisions about soil, water, cover cropping, fertilization and weed control. Shoot thinning, leaf removal, hedging and crop thinning are also part of canopy management.
(2024) Grapevine training systems for managing winter cold injury Grapevine buds are at risk of cold injury in some Pacific Northwest growing regions. Growers can protect their grapevines by adopting training methods such as cane burial and low-head training systems.
(2024) Season 2, Episode 11 | Virginia Nitrogen Trials - A Tale of Two Cultivars Learn how nitrogen application and time of day for tissue sampling impacted nitrogen status.
(2024) Season 2, Episode 10 | Tracing Nitrogen from Vine to Berry FInd out where nitrogen was found in grapevine tissues after foliar nitrogen sprays intended to boost berry or must YAN.
(2024) Season 2, Episode 9 | Does Vineyard Nitrogen Impact Wine Sensory? Learn more about how nitrogen impacts wine sensory perception in white wines.
(2024) Season 2, Episode 8 | Adapting Research to Build Precision Viticulture Tools Learn about how engineers work with viticulturists to develop a vine nutrition sensor.
(2024) Season 2, Episode 7 | Precision Ag Requires Sensors and Models with Feedback Loops Learn about research results from the HiRes Vineyard Nutrition Project!
(2024) Season 2, Episode 6 | Thinking Outside the Box for Nutrient Sampling Learn about research to test alternative vine tissue for nutrient sampling.
(2024) Season 2, Episode 5 | Using Satellites to Guide Grapevine Tissue Sampling Learn about research to help growers identify where to sample vineyards for vine nutrient analysis.
(2023) Season 2, Episode 4 | Challenges of Developing Field Sensors for Vineyard Nitrogen Status Learn how researchers are developing sensors to detect grapevine nitrogen in vineyards.
(2023) Season 2, Episode 3 | Monitoring Grapevine Nitrogen Uptake with Hydroponics Learn about a research conducted by a member of the HiRes Vineyard Nutrition Project team.
(2023) Season 2, Episode 2 | Modeling Economic Impact of Nutrient Management Learn about grapevine tissue and yield modeling is used to quantify economic impact of vineyard nutrient management.
(2023) Season 2, Episode 1 | Research is a Two-Way Street Learn more about the challenges of vineyard nutrition research and outreach and the importance of industry engagement in research design and outreach.
(2023) Season 1, Episode 11: Vineyard to Winery - Looking Beyond YAN Listen to this podcast episode to learn more about how nitrogen in the berries are important for winemaking and sensory quality.
(2023) Season 1, Episode 10: Defining Economic Value of Vineyard Nutrient Management Learn how researchers determine economic value of farm production practices and how those data can be used to help growers make more informed decisions in the future.
(2023) Season 1, Episode 9: Vineyard Data and Experience Required for Sensor Development Learn how plant nutrient sensors are developed and the need for agricultural engineers to help with precision agriculture in the future.
(2022) PNW Insect Management Handbook - Mealybugs of Grapes The PNW Insect Management Handbook provides Oregon-specific information on mealybugs and their management including labeled insecticides.
(2023) Season 1, Episode 8: Honoring the Past, Building the Future Learn more about viticulture and precision agriculture research to understand plant nutrition monitoring and management from table grape trials conducted in California's San Joaquin Valley.
(2023) Season 1, Episode 7: Precision Tools for All Vineyards, Great and Small Learn from Dr. Alireza Pourreza how precision agriculture tools are being developed for plant nutrition tracking in vineyards of all sizes.
(2023) Season 1, Episode 6: The Necessity of Nutrient Monitoring When Margins are Slim Learn how New York state grape growers use nutrient monitoring for management and the research that has improve their work.
(2023) Season 1, Episode 5: It's All About Integration Learn how viticulture research is helping growers integrate precision agriculture tools in US vineyards.
(2023) Grapevine Rootstock Trial See how the vines looked in the trial right before harvest in 2022!
(2022) Season 1, Episode 4: What to Expect from Plant Nutrient Sensors Learn how sensors are being developed and tested in grape vineyards throughout the US from Dr. Jan Van Aardt, professor at Rochester Institute Technology (RIT).
(2022) Pinot Noir Crop Estimation: Increase Factor Calculator This Excel file is for grape growers to use in calculating increase factors for Pinot noir yield estimates.
(2022) Season 1, Episode 3: The Grapevine "Blood Test" Learn more about why we use leaf blades and petioles for grapevine nutrient monitoring.
(2022) Season 1, Episode 2: Vineyard Nutrition in Arid Climates Learn about the High-Resolution Vineyard Nutrition Project from Director, Dr. Markus Keller, Professor of Viticulture at Washington State University. He describes how he became lead of the project and summarizes the challenges of managing vineyard nutrition in arid eastern Washington wine- and juice-grape vineyards.
(2022) Season 1, Episode 1: How It All Started Learn how a few dedicated people and good ideas led to this nationally-funded vineyard health project.
(2022) Grapevine virus testing labs A list of virus testing labs is provided.
(2021) High Resolution Vineyard Nutrition Project Learn more about this multi-disciplinary national project aimed at better monitoring and measuring vineyard nutrition.
(2021) Where can I buy grapes to make wine? Learn how to find small quantities of grapes for winemaking.
(2020) How to Scout for Grape Phylloxera in Vineyards This video provides the basic steps in searching for phylloxera in an infested vineyard.
(2020) How to assess whether grapes and wines are affected by wildfire smoke Exposure of wine grapes to wildfire smoke can affect the sensory qualities of wine. Learn how to use laboratory analysis and micro fermentations to assess the impact.
(2018) Patricia Skinkis, Viticulturist Patty Skinkis is a viticulture Extension Specialist and a core researcher with the Oregon Wine Research Institute, based at Oregon State University. Her research focuses on how yield affects quality. It starts in the lab, with examining the buds, and continues into the field, with testing various amounts of thinning, and then to evaluating the quality of the wine.

Special Thanks to:
Bill Boggess, Executive Associate Dean, OSU College of Agricultural Sciences
Danielle Gabriel, inspiration for OWRI research video series

https://owri.oregonstate.edu/
(2022) Wine grape industry certificate and degree programs For anyone interested in working in the wine industry — from the vineyard and cellar to the tasting room and front office — there are plenty of educational opportunities at schools in Oregon and Washington.
(2019) How to cane prune grapevines This video provides instructions on how to cane prune a grapevine.
(2019) How to spur prune grapevines This video provides instructions on how to prune cordon-trained vines with spur pruning during winter.
(2024) How to Shoot Thin Grapevines in Spring Watch to learn how to conduct shoot thinning in a vineyard.
(2018) Spotted Wing Drosophila (SWD) Information and resources about monitoring, identification, and management of spotted wing drosophila (SWD), an invasive fruit fly.
(2018) Monitoring vineyard nutrition This article describes how to determine vineyard nutrient needs through grapevine tissue and soil sampling. It also provides tissue testing guidelines.
(2019) How to protect vineyards from grapevine red blotch disease (GRBD) Learn more about what Grapevine Red Blotch Disease is, how to prevent it, and how to test grapevines for the disease.
(2018) Cost of establishing and managing a vineyard in Oregon This publication provides an economic analysis of the costs to establish and manage a Pinot noir vineyard in the Willamette Valley of Oregon. Although the information is specific to a Willamette Valley scenario, the information is useful for those who are planning to establish a vineyard.
(2018) Starting a vineyard This article provides the important steps that need consideration in developing a vineyard business in Oregon.
(2018) How to prevent Botrytis bunch rot in the vineyard Botrytis bunch rot is the most common fruit rot disease for wine grape vineyards in the Pacific Northwest. Here's how to prevent this disease from damaging your fruit.
(2024) Grape variety identification Identifying the grape cultivar or variety can be complicated. Learn the resources and services that may be used to identify grape varieties for commercial or home/hobby vineyards and landscapes.
(2021) Online classes assist Oregon's $328 million wine industry Participants learn to design a vineyard, manage pests, and balance yield and fruit quality
(2018) Vineyard Training Videos These educational videos were produced by OSU Viticulture Extension Specialist, Dr. Patty Skinkis. Videos are meant to be instructional/educational and be used for training purposes in vineyards and wineries.
(2018) Oregon Wine Research Institute Visit this website for information about the research activities of the faculty team at the Oregon Wine Research Institute at Oregon State University. Information is intended for the commercial wine grape industry. Content includes research reports, newsletter archives, webinar recordings, upcoming events, and other research-based information from viticulture, enology, and wine business faculty.
(2024) Considerations and resources for vineyard establishment in the Inland Pacific Northwest Factors and critical questions that potential owners need to consider before establishing a new vineyard in Eastern Washington, Eastern Oregon or Western Idaho.
(2013) Understanding Vine Balance: An Important Concept in Vineyard Management Vineyard design and management methods that create vine balance will help sustain productive yields, achieve desired fruit quality and maintain vine health. Different climates across Oregon will affect strategies for achieving vine balance, but the basic approach is the same everywhere.
(2013) How to Measure Dormant Pruning Weights of Grapevines Pruning weights are the best way to monitor vine growth and vine size changes caused by vineyard management practices. It is easy to gather these data during routine, annual pruning.
(2018) Prevención y manejo del virus del enrollamiento de la hoja y de los piojos harinosos en viñedos del estado de Oregon Este documento sugiere prácticas que se cree reducen la propagación de enfermedades y virus.
(2024) Trapping and Identifying Mealybugs in Oregon Vineyards Vineyard managers will learn how and why to trap vine mealybugs in vineyards.
(2009) Prevention and Management of Grapevine Leafroll Virus and Mealybugs in Oregon Vineyards This document suggests practices believed to mitigate the spread of disease and virus.
(2024) Field Monitoring for Leafroll Virus and Mealybug in Pacific Northwest Vineyards This publication focuses on in-field identification of signs and symptoms associated with grapevine leafroll-associated viruses and the insects that transmit them.
(2022) Establishing a Vineyard in Oregon: A Quick-Start Resource Guide This is a quick reference for those interested in establishing a vineyard in Oregon. A step-by-step format guides readers to the basic information they would need to consider before developing a vineyard, including how to develop a business plan, determine site suitability, investigate cultivars, and order plants.
(2020) Recognize the Symptoms and Causes of Stunted Growth in Vineyards Spring frost, herbicide drift, water or nutrient stress, diseases, and insect and mite pests can cause similar symptoms of stunting or distorted growth in grapevines. Recognizing the symptoms and distinguishing their causes is the first step in diagnosing problems and developing a management plan. With many color photos, this publication will help you identify probable causes of distorted shoot and vine growth in vineyards and direct you to other resources that can lead to solutions
(2024) 2024 Pest Management Guide for Wine Grapes in Oregon Learn the most effective techniques for controlling insects, weeds and disease on wine grapes in Oregon. Study strategies for controlling powdery mildew, botrytis bunch rot and spider mites.
(2021) Grape Phylloxera: Biology and Management in the Pacific Northwest Describes the life cycle and injury symptoms of grape phylloxera, Daktulosphaira vitifoliae (Fitch), an aphidlike insect that feeds on grape roots. Discusses strategies for reducing the risk of phylloxera infestation, how to sample vines to confirm the presence of phylloxera, how to monitor the rate of spread, ways to manage a phylloxera-infested vineyard, replanting options, and phylloxera-resistant rootstocks.

Skinkis, P., J.W. Pscheidt, A. KC, M. Moretti, E. Peachey, V.M. Walton, C. Kaiser, and C. Copp. 2008-2023. Pest Management Guide for Wine Grapes in Oregon. Oregon State University Extension Service. EM 8413. (updated annually)

Skinkis, P., V. Walton, A.J. Dreves, C. Kaiser, S. Renquist, S. Castagnoli, R. Hilton, and L. Brewer. 2016. Recognize the Symptoms and Causes of Stunted Growth in Vineyards. Oregon State University Extension Service. EM8975. (PDF and app)

Kennedy, M. and P. Skinkis. 2016. Are Your Weed-Control Products Damaging Nearby Vineyards? Oregon State University Extension Service. EM 9132.

Skinikis, P. 2018. Establishing a Vineyard in Oregon: A Quick-start Resource Guide. Oregon State University Extension Service. EM 8973.

Skinkis, P.A. and A.J. Vance. 2013. Understanding Vine Balance: An important concept in vineyard management. Oregon State University Extension Service. EM 9068.

Vance, A.J., A.L. Reeve, and P. A. Skinkis. 2013. The Role of Canopy Management in Vine Balance. Oregon State University Extension Service. EM 9071.

Skinkis, P.A. and R.P. Schreiner. 2013. How to Measure Grapevine Leaf Area. Oregon State University Extension Service. EM 9070.

Skinkis, P.A. 2013. How to Measure Dormant Pruning Weight of Grapevines. Oregon State University Extension Service. EM 9069.

Skinkis, P.A. and A.L. Reeve. 2013. Lateral Crop Production: Vine rebellion against imbalance. Practical Winery & Vineyard Journal, August 2013: 81-84.

Field Guide for Integrated Pest Management in Pacific Northwest Vineyards. Pacific Northwest Extension Publication: Washington State University, Oregon State University, University of Idaho. (Skinkis, P.A. contributing author, 2013).

Moyer, M., C. Kaiser, J. Davenport, and P. Skinkis. 2012. Considerations and resources for vineyard establishment in the inland Pacific Northwest. Pacific Northwest Extension Publication, PNW634.

Skinkis, P.A., and R.P. Schreiner. 2011. Grapevine Nutrition. Oregon State University Extension Service, EM 9024.

Skinkis, P.A. 2010. Herbicides and Grapevines: Understanding the Risks. Online educational module and diagnostic tool. Oregon State University Extension Service.

James, D., P. Skinkis, Walton, V. “Grape Pests” In 2013 Pacific Northwest Insect Pest Management Handbook. Pacific Northwest Extension Publication. (updated annually)

Walton, V., A. Dreves, P. Skinkis, C. Kaiser, M. Buchanan, R. Hilton, R.R. Martin, S. Castagnoli, S. Renquist. Oct 2009. Grapevine Leafroll Virus and Mealybug Prevention and Management in Oregon Vineyards. Oregon State University Extension Service EM8990 (English) and EM8990S (Spanish).

Skinkis, P.A., A.J. Dreves, V.M. Walton and R.R. Martin. July 2009. Field Monitoring for Grapevine Leafroll Virus and Mealybug in Pacific Northwest Vineyards. Oregon State University Extension Service EM8985 (English) and EM8985S (Spanish).

Walton, V., P. Skinkis, A. Dreves, C. Kaiser, S. Renquist, S. Castagnoli, R. Hilton. 2009. Grapevine Growth Distortions: A Guide to Identifying Symptoms. OSU Extension Service EM 8975-E.

Skinkis, P., V. Walton, C. Kaiser. 2009. Grape Phylloxera: Biology and Management in the Pacific Northwest. OSU Extension Service EC1463.

Julian, J.W., C.F. Seavert, C. Kaiser, P.A. Skinkis. 2009. Vineyard Economics: Establishing and Producing Cabernet Sauvignon Wine Grapes in Eastern Oregon. OSU Extension service EM8974-E.

J.W. Julian, C.F. Seavert, P.A. Skinkis, P. VanBuskirk, S. Castagnoli. 2008. Vineyard Economics: Establishing and Producing Pinot Noir Wine Grapes in Western Oregon. OSU Extension Service EM8969-E.

Kaiser, J.W. Pscheidt, V.Walton and P. Skinkis. 2008. How to Reduce the Risk of Pesticide Resistance in Winegrape Pests in Oregon. OSU Extension Service EM8968.

Kaiser, C., P. Skinkis, M. Olmstead. 2008. Protecting Grapevines from Winter Injury. OSU Extension Service. PNW 603-E.

Walton, V., A. Dreves, P. Skinkis. 2007. Short Shoot Syndrome of Grapes in the Pacific Northwest. OSU Extension Service EM8944-E.

My Media

My News Articles:

Planting For the Future

Dr. Patty Skinkis. Photo credit: Lynn Ketchum

As growers experiment with new ideas, they rely on Oregon State University’s Extension Service for assistance.

Full story

Primary tabs

Patricia Skinkis

Agricultural & Life Sciences

2750 SW Campus Way

Patricia Skinkis, Viticulturist

Service to the Profession

University Service

Extension Service Site Publications

Planting For the Future

Planting For the Future

Student Resources

Employee Resources

New Employees