Vaughn Walton

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Entomologist

Tenga en cuenta que es posible que esta persona no hable español.

541-737-3464
[email protected]

Expertise: Berries, table grapes and kiwifruit , Hazelnuts and nut crops , Wine grapes , Berries and fruit , Sustainability , Insects , Invasive species

Links: OSU Faculty page , Google scholar , Researchgate , Oregon Wine Research Institute

Department/Unit: Horticulture

Content by Vaughn Walton

2023 Pest Management Guide for Wine Grapes in Oregon

Learn the most effective techniques for controlling insects, weeds and disease on wine grapes in Oregon. This comprehensive publication for growers covers strategies for controlling powdery mildew, botrytis bunch rot ...

Patricia A. Skinkis, Jay W. Pscheidt, Achala KC, Marcelo Moretti, Vaughn Walton, Cody Copp | Feb 2023 | Extension Catalog publication

Suppressing Spotted-wing Drosophila Egg-laying with Micro-sprinkler Insecticide Application in Highbush Blueberry

Micro-sprinkler application of certain pesticides suppresses spotted-wing drosophila in highbush blueberries. However, those same pesticides applied by backpack sprayers provide better control.

Serhan Mermer, Gabriella Tait, Ferdinand Pfab, Edwin T. Harris, Linda Brewer, Christopher Adams, Vaughn Walton | Dec 2022 | Extension Catalog publication

PNW Insect Management Handbook - Mealybugs of Grapes (in English)

The PNW Insect Management Handbook provides Oregon-specific information on mealybugs and their management including labeled insecticides.

Patricia A. Skinkis, Vaughn Walton, Brooke Edmunds | Dec 2022 | Online resource

Spotted-wing Drosophila, Relative Rankings and Seasonal Strategies for Insecticide Use

Researchers around the country have ranked the effectiveness of the most-used pesticides to control spotted-wing drosophila populations in the field. These recommendations are focused on controlling immature and adult life stages of SWD.

Serhan Mermer, Philip Fanning, Gabriella Tait, Ferdinand Pfab, Christopher Adams, Linda Brewer, Vaughn Walton | Aug 2022 | Extension Catalog publication

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, ...

Patricia A. Skinkis, Vaughn Walton, Clive Kaiser | Jul 2021 | Extension Catalog publication

OSU educates growers about invasive, fruit-damaging fly

Continuing study is leading to targeted approaches that allow producers to bring crops to market while reducing pesticide use

Vaughn Walton | Jun 2021 | Impact story

Pest Alert: Spotted Lanternfly is an Invasive Insect That May Impact Oregon

Spotted Lanternfly has a broad range of plant hosts, including grape, stone fruits, apple, ornamental species, maple, black walnut, willow and rose. Nymphs and adults are phloem feeders. They suck sap from young ...

Serhan Mermer, Gabriella Tait, Josh Vlach, Jana Lee, Man-Yeon Choi, Heather Leach, Linda Brewer, Vaughn Walton | Mar 2021 | Extension Catalog publication

Testing and Tracking the Spread of Grapevine Red Blotch Virus in Oregon Vineyards

Grapevine red blotch virus (GRVB) is one of about 80 viruses infecting wine grapes worldwide. It may affect fruit ripening and thus impact the quality of finished wines. GRBV incidence increased from two to 10 ...

Daniel Dalton, Jessica Buser-Young, Samantha Nizich, Alexander Levin, Vaughn Walton, Richard Hilton, Linda Brewer | Jan 2021 | Extension Catalog publication

El Chinche Apestoso Marrón Marmolado

El chinche apestoso marrón marmolado (Halyomorpha halys) es un insecto invasor y una amenaza muy grave para la agricultura de Oregon. Se alimenta de más de 100 plantas incluyendo plantas agrícolas y ornamentales...

Chris Hedstrom, Nik Wiman, Vaughn Walton, Peter Shearer, Silvia I. Rondon, Jana Lee | Dec 2020 | Extension Catalog publication Peer reviewed (Orange level)

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 ...

Patricia A. Skinkis, Vaughn Walton, Amy J. Dreves, Clive Kaiser, Steve Renquist, Steve Castagnoli, Rick Hilton, Linda Brewer | Jan 2020 | Extension Catalog publication

Cultural Control Strategies to Manage Spotted-wing Drosophila

Cultural controls can reduce spotted-wing drosophila population pressure by modifying the microclimate within the crop so that the environment does not promote SWD reproduction and survival.

Dalila Rendon, Serhan Mermer, Linda Brewer, Daniel Dalton, Cherre Bezerra Da Silva, Jana Lee, Rachael Nieri, Kyoo Park, Ferdinand Pfab, Gabriella Tait, Marco Rossi-Stacconi, Nik Wiman, Vaughn Walton | Dec 2019 | Extension Catalog publication

Monitoring Techniques for Spotted-wing Drosophila

Commercial fruit growers use trapping to monitored for adult SWD in fields and field borders. They monitor other fruits for infestation using a fruit dunk flotation technique.

Gabriella Tait, Marco Rossi-Stacconi, Betsey Miller, Daniel Dalton, Jana Lee, Kyoo Park, Vaughn Walton, Tom Peerbolt, Linda Brewer | Dec 2019 | Extension Catalog publication

How Seasons Affect Population Structure, Behavior and Risk on Spotted-wing Drosophila

Temperatures do affect how quickly SWD reproduce, see how temperatures affect their life cycle.

Vaughn Walton, Linda Brewer, Daniel Dalton, Rachael Nieri, Kyoo Park, Ferdinand Pfab, Dalila Rendon, Gabriella Tait, Nik Wiman, Marco Rossi-Stacconi | Dec 2019 | Extension Catalog publication

Improved Chemical Control Strategies for Spotted-wing Drosophila

Several factors should be considered when designing the best insecticide application strategy against spotted-wing drosophila (SWD). The level of control achieved will depend on the life-stage makeup of the SWD ...

Serhan Mermer, Linda Brewer, Daniel Dalton, Rachael Nieri, Kyoo Park, Ferdinand Pfab, Marco Rossi-Stacconi, Vaughn Walton | Dec 2019 | Extension Catalog publication

Optimizing Chemical Control of Spotted-wing Drosophila

Crop canopy and structure and the type of pesticide spray equipment help determine the effectiveness of pesticide applications.

Serhan Mermer, Gwen-Alyn Hoheisel, Haitham Bahlol, Lav Khot, Dalila Rendon, Linda Brewer, Daniel Dalton, Rachael Nieri, Kyoo Park, Ferdinand Pfab, Marco Rossi-Stacconi, Vaughn Walton | Dec 2019 | Extension Catalog publication

Noncrop Host Plants Used by Spotted-wing Drosophila

Dense vegetation surrounding commercial fields can create a suitable habitat for spotted-wing drosophila due to the shade, coolness and humidity it provides during the summer. Noncrop habitat may contribute to SWD ...

Gabriella Tait, Dalila Rendon, Linda Brewer, Daniel Dalton, Jana Lee, Rachael Nieri, Kyoo Park, Ferdinand Pfab, Marco Rossi-Stacconi, Vaughn Walton | Dec 2019 | Extension Catalog publication

Biocontrol of Spotted-wing Drosophila

Multiple biological control agents target SWD, including predators, parasitoids, nematodes and microorganisms such as fungi and bacteria. Predators ambush and eat SWD, removing a substantial portion of them from the production system.

Marco Rossi-Stacconi, Linda Brewer, Betsey Miller, Daniel Dalton, Jana Lee, Kyoo Park, Ferdinand Pfab, Vaughn Walton, Cherre Bezerra Da Silva | Dec 2019 | Extension Catalog publication

Host Range and Characteristics Affecting Fruit Susceptibility to Spotted-wing Drosophila

Spotted-wing drosophila (SWD) can develop on a wide range of cultivated and wild, soft-skinned fruits. This complicates pest management because SWD populations can move among several hosts with different ripening times...

Vaughn Walton, Marco Rossi-Stacconi, Gabriella Tait, Dalila Rendon, Jana Lee, Rachael Nieri, Linda Brewer | Dec 2019 | Extension Catalog publication

Potential Impacts of Irrigation on Biocontrol of Spotted-Wing Drosophila

A naturally occurring parasitic wasp in Oregon can help control SWD in the state’s blueberry farms.

Cherre Bezerra Da Silva, Brianna F. Price, Daniel Dalton, Dalila Rendon, Kyoo Park, Linda Brewer, Vaughn Walton, Marco Rossi-Stacconi | Dec 2019 | Extension Catalog publication

Oregon State entomologists develop organic product to control fruit pest

A patent-pending commercial application known as Decoy has resulted in a 67% reduction in damage, on average.

Vaughn Walton | Aug 2019 | Impact story

Hazelnut IPM

Resources about integrated pest management for hazelnuts.

Nik Wiman, Vaughn Walton, Jay W. Pscheidt, Marcelo Moretti, David Lowenstein, Heather Andrews, Rachele Nieri | May 2019 | Collection

Vineyard Integrated Pest Management (in English)

Vaughn Walton is an entomologist with Oregon State University’s Department of Horticulture and also a core researcher with the Oregon Wine Research Institute. He works with vineyardists who are growing grapes for this area’s ...

Vaughn Walton | Mar 2019 | Video

Spotted Wing Drosophila (SWD)

Information and resources about monitoring, identification, and management of spotted wing drosophila (SWD), an invasive fruit fly.

Vaughn Walton, Linda Brewer, Bernadine Strik, Patricia A. Skinkis, Peter Shearer, Jana Lee, Man-Yeon Choi | Dec 2018 | Collection

Brown Marmorated Stink Bug (BMSB)

Information and resources about the brown marmorated stink bug (BMSB), an invasive

Nik Wiman, Rick Hilton, Clive Kaiser, Vaughn Walton, Rachel Suits, David Lowenstein, Victoria Skillman, Heather Andrews | Dec 2018 | Collection

Sustainable Hazelnut Production: Filbertworm Control by Mating Disruption

Filbertworm is the insect pest of greatest economic importance in Oregon hazelnut production. This publication explains how to Implement mating disruption as a strategy that will reduce damage caused by filbertworm ...

Betsey Miller, Daniel Dalton, Linda Brewer, Vaughn Walton | May 2018 | Extension Catalog publication

Vaughn Walton, Entomologist (in English)

Vaughn Walton is an entomologist with Oregon State University’s Department of Horticulture and also a core researcher with the Oregon Wine Research Institute. He works with vineyardists who are growing grapes for this area’s ...

Vaughn Walton | Apr 2018 | Video

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.

Vaughn Walton, Amy J. Dreves, Patricia A. Skinkis, Clive Kaiser, Marcus A. Buchanan, Rick Hilton, Robert Martin, Steve Castagnoli, Steve Renquist | Jan 2018 | Extension Catalog publication Peer reviewed (Orange level)

Trissolcus japonicus: Avispa parasitoide prometedora para el manejo de la chinche hedionda marrón marmoleada (CHMM)

La avispa Trissolcus japonicus es una parasitoide que ataca a los huevos de la chinche hedionda marrón marmoleada (CHMM), una plaga de cultivos comerciales y huertos caseros. Por lo tanto, la Trissolcus japonicus ...

David Lowenstein, Chris Hedstrom, Nik Wiman, Heather Andrews, Richard Hilton, Clive Kaiser, Jana Lee, Vaughn Walton | Apr 2017 | Extension Catalog publication Peer reviewed (Orange level)

How to Monitor for Brown Marmorated Stink Bug in Specialty Crops

The invasive brown marmorated stink bug is a serious threat to Oregon specialty crops, including hazelnuts, tree fruits, small fruits, vegetables, and wine grapes. This insect pest also attacks ornamentals, agronomic ...

Nik Wiman, Daniel Dalton, Linda Brewer, Peter Shearer, Vaughn Walton | Mar 2016 | Extension Catalog publication

Biological Control of Black Vine Weevil Larvae in Cranberry

Recommends methods for incorporating biocontrol into a management program for black vine weevil larvae.

Betsey Miller, Vaughn Walton, Linda White, Denny Bruck, Linda Brewer | Mar 2015 | Extension Catalog publication

How to Recognize Brown Marmorated Stink Bug Damage in Commercial Hazelnuts

The brown marmorated stink bug is well-established in the Willamette Valley, where virtually all domestic hazelnut production occurs. The BMSB feeds on hazelnuts, and this publication helps growers and scouts learn to recognize BMSB damage to hazelnuts.

Chris Hedstrom, Vaughn Walton, Nik Wiman, Peter Shearer, Jeff Miller, Linda Brewer | Dec 2014 | Extension Catalog publication

Evaluating Compatibility of Horticultural Oils and Sulfur with Vineyard IPM

Typhlodromus pyri is a beneficial insect and key predator of Calepitrimerus vitis in Pacific Coast vineyards. C. vitis is closely associated with short-shoot syndrome. The impact of horticultural (paraffinic) oils and ...

Angela Gadino, Vaughn Walton, Amy J. Dreves, Gregory V. Jones, Linda Brewer | Aug 2014 | Extension Catalog publication

Distribution and Monitoring of Grape Mealybug: A Key Vector of Grapevine Leafroll Disease in Oregon

A pheromone lure baited with the sex pheromone of grape mealybug is the most reliable way to confirm the presence or absence of this important vector of grapevine leafroll-associated viruses.

Daniel Dalton, Vaughn Walton, Kent Daane, Clive Kaiser, Rick Hilton, Linda Brewer | Apr 2014 | Extension Catalog publication

Growing Hazelnuts in the Pacific Northwest: Integrated Pest Management

This publication provides an overview of insect, disease, and vertebrate pest management in hazelnut.

Jeff L. Olsen, Jay W. Pscheidt, Vaughn Walton | Nov 2013 | Extension Catalog publication

Recognize Fruit Damage from Spotted Wing Drosophila

This publication shows damage caused by SWD on blueberries (Duke), raspberries (Malahat), strawberries (Seascape), cherries (Bing, Montmorency, and Rainier), and grapes (Pinot Noir, Chardonnay).

Vaughn Walton, Jana Lee, Denny Bruck, Peter Shearer, Emily Parent, Thomas Whitney, Amy J. Dreves | Dec 2010 | Extension Catalog publication

Trapping and Identifying Mealybugs in Oregon Vineyards

This publication gives details on how pheromone traps should be used to ensure optimal catches and early detection.

Amy J. Dreves, Vaughn Walton | Jan 2010 | Extension Catalog publication

A New Pest Attacking Healthy Ripening Fruit in Oregon: Spotted Wing Drosophila

Publication provides an overview of spotted wing drosophila identification, biology, damage, monitoring, and control.

Amy J. Dreves, Vaughn Walton, Glenn Fisher | Oct 2009 | Extension Catalog publication

Hazelnut Pest and Beneficial Insects: An Identification Guide

With color photos and text, describes principal insect pests of hazelnuts (filberts) including life stages, symptoms of infestation, and techniques for sampling population levels. Also describes beneficial insects (generalist natural enemies) that can combat pest insects.

Vaughn Walton | Jun 2009 | Extension Catalog publication

Identification of Invasive and Reemerging Pests on Hazelnuts

Describes key identification features, life cycle, and pest status of filbertworm, filbert weevil, filbert aphid, and hazelnut aphid. Includes color photos.

Vaughn Walton, Ute Chambers, Amy J. Dreves, Denny Bruck, Jeff L. Olsen | Dec 2007 | Extension Catalog publication

Sightings of spotted lanternflies worry farmers, nursery industry

So far, there’s no known infestation in Oregon. If one establishes, many of Oregon’s high-value industries may be affected, including wine grapes, nursery and tree crops, small fruits and timber.

Kym Pokorny | Jul 15, 2021 | News story

OSU Extension set to release tiny wasp that targets destructive fruit fly

U.S. Department of Agriculture has permitted release of the wasp (Ganaspis brasiliensis), which attacks destructive spotted wing drosophla.

Kym Pokorny | Jun 6, 2022 | News story

Samurai wasp takes on brown marmorated stink bug

Invasive pest may have met its match

Kym Pokorny | Jun 2, 2017 | News story

Researchers identify successful biological control for destructive fruit fly

A parasitic wasp has shown tremendous potential attacking and controlling spotted wing drosophila – an invasive, destructive fruit fly that costs Oregon growers close to a billion dollars a year.

Kym Pokorny | Dec 10, 2019 | News story

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