Associate Professor
nik.wiman [at] oregonstate.edu

Research Way Laboratory Building

Research Way Laboratory Building 1087

Research Way Laboratory Building 4575 SW Research Way

Research Way Laboratory Building

4575 SW Research Way

Corvallis, OR 97333

biological control
population biology
orchard ecology
insect behavior
integrated pest management

Nik earned a BS (biology) and MS (entomology) from Montana State University where he worked on biological control of weeds in rangeland. From there, he transitioning into tree fruit entomology, working for nearly a decade on mating disruption, biological control, and pest population dynamics in Wenatchee Washington, ultimately earning his PhD (entomology) from WSU in 2011. He Came to OSU as a postdoc (entomology/horticulture) in 2012.

At OSU

Headquarters:

Experiment Station

Career Links:

Department of Horticulture

Tree Fruits and Nuts

Brown Marmorated Stink Bug

Hazelnuts

Wiman Lab

Hazelnut Production Extension

Hazelnut Extension on Facebook

Information for hazelnut growers (listserv)

Cider Apple Extension on Facebook

Entomology Program

I accept graduate students for the Entomology Program

I accept graduate students for Horticulture

Student(s):

John Webber

Professional Accomplishments

Employment:

Associate Professor, Extension Orchard Specialist. Department of Horticulture, North Willamette Research and Extension Center. (2015-2021)
Assistant Professor, Extension Orchard Specialist. Department of Horticulture, North Willamette Research and Extension Center. (2015-2021)
Assistant Professor, Senior Research. Department of Horticulture, Oregon State University, Corvallis, OR. (2014-2015)
Postdoctoral Research Associate, Department of Horticulture/Crop and Soil Science, Oregon State University, Corvallis, OR. (2012-2014)
Associate in Research, Department of Entomology, Washington State University, Tree Fruit Research and Extension Center, Wenatchee, WA. (2002-2006).

Education:

Ph.D. - 2011 - Entomology, Washington State University, Pullman, WA

M.S. - 2001 - Montana State University, Bozeman, MT

B.S. - 1998 - Montana State University, Bozman, MT

My Awards

My Publications

Outreach and Extension

Extension Service Site Publications

(2023) Biocontrol: Natural Enemies of Key Pests of Hazelnuts in Oregon Biocontrol, also known as biological control, uses living organisms to help control pest populations. Biocontrol is a key part of any IPM plan. Learn about some of the key pests in hazelnut orchards and the tiny friends of the orchard that consume them.
(2022) Measuring the Economic Impact of Pests and Pest Management on Oregon Hazelnuts Insects, diseases, weeds and other pests all affect Oregon's hazelnut industry. The report analyzes real-world data on these impacts to inform producers' approaches to integrated pest management.
(2019) 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.
(2019) 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.
(2019) Hazelnut IPM Resources about integrated pest management for hazelnuts.
(2019) Wiman Lab Current research includes IPM for new and old hazelnut pests, hazelnut nutrition, hazelnut water use/irrigation, and cider apple production. Primary interests are population biology of insects, biological control, sustainable orcharding and grower outreach.
(2018) Brown Marmorated Stink Bug (BMSB) Information and resources about the brown marmorated stink bug (BMSB), an invasive
(2017) 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 tiene el potencial de manejar esta plaga. Esta publicación le ayudará a encontrar y reconocer la Trissolcus japonicus, y explica su modo de parasitismo. Esta publicación está disponible en inglés y español.
(2017) Samurai wasp: Promising egg parasitoid for management of Brown Marmorated Stink Bug (BMSB) The samurai wasp (Trissolcus japonicus) is a parasitoid that attacks the eggs of the brown marmorated stink bug (BMSB), making it a potential candidate for managing this significant threat to commercial agriculture and residential gardens. This publication will help you know what the samurai wasp looks like, where to find it, and how it parasitizes BMSB eggs. The publication is available both in English and Spanish.
(2016) 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 crops and native plants in Oregon. Monitoring for BMSB can be done several ways including using beat sheets, pheromone traps, and visual observations.
(2014) 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.
(2013) Brown Marmorated Stink Bug The brown marmorated stink bug (Halyomorpha halys) is an invasive insect and a very serious threat to Oregon agriculture. It feeds on more than 100 plants, including economically important crops and ornamentals. This card has photos and descriptions to help identify brown marmorated stink bugs and distinguish them from other insects. The card also includes photos of damage symptoms on several plants.
Sold as a package of 20 cards (5.5 x 4.5 inches).
This publication is printed to order and shipped directly from OSU Printing & Mailing Services. Please allow up to 10 business days for delivery.
(2020) 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 de importancia económica. Esta tarjeta presenta con fotos y descripciones para ayudar a identificar el chinche apestoso marrón marmolado y distinguirlos de otros insectos. La tarjeta también incluye fotos de los síntomas de daño en varias plantas.
Se vende como un paquete de 20 tarjetas (5.5 x 4.5 pulgadas).
Esta publicación se imprime a la orden y se envía directamente de OSU Printing & Mailing Services. Por favor espere hasta 10 días hábiles para entrega.
(2023) 2023 Pest Management Guide for Peaches Get the latest recommendations for insect, mite and disease control in peach orchards of the Willamette Valley.
(2023) 2023 Hazelnut Pest Management Guide for the Willamette Valley Learn how to control insects, weeds and disease during each stage of hazelnut growth.

View the app version
View diseases, pests and products by crop stage on a web-based app.
Try the app
(2022) 2022 Willamette Valley Pest Management Guide for Walnuts Read the latest recommendations for insect, mite and disease control in walnut orchards.
(2019) 2019 Pear Pest Management Guide for the Willamette Valley Recommends pest management practices for pear.
(2023) 2023 Willamette Valley Pest Management Guide for Cherries Get updated recommendations for insect, mite and disease control in cherry orchards of the Willamette Valley.
(2023) 2023 Pest Management Guide for Apples: Willamette Valley Learn the latest recommendations for insect, mite and disease control in Willamette Valley apple orchards.
(2023) 2023 Pest Management Guide for Tree Fruits: Hood River, The Dalles, White Salmon, Rogue Valley, Umatilla County This guide provides tree fruit growers with the latest information on pesticides and herbicides for fruit trees. People who grow apples, pears and cherries can learn application rates and recommendations for each stage of tree growth.
(2020) Managing Diseases and Insects in Home Orchards This pest management guide is for the home gardener. It recommends management practices for controlling diseases and insects in home orchards. It doesn't meet the exacting requirements of the commercial fruit grower.

My Media

My News Articles:

Brown Marmorated Stink Bugs endanger $132 million hazelnut crop

Nik Wiman, an associate professor in the Oregon State University College of Agricultural Sciences, stated that the first BMSB to be detected in Oregon was found in Portland in 2004. Wiman says OSU has been researching the bugs for a decade.

Full story

Non-native stink bugs lay some stank on Oregon crops

It's bad enough they're called "stink bugs." But it's even worse that they have a well-developed taste for Oregon crops, and few natural predators.

Full story

Large increase of brown marmolated stink bugs poses serious threat to Oregon crops

Full story

OSU research helps hazelnuts thrive

Acreage has doubled since breakthrough found against Eastern Filbert Blight.

Full story

Oregon Hazelnuts Rebound After Fierce Ice Storm

Newer varieties of hazelnut trees proved more resilient in the ice storm as well as to diseases according to Nik Wiman, an orchard specialist at Oregon State University.

Full story

Researchers focus on helping hazelnut bloom

Hazelnuts are the most important orchard crop in Oregon’s Willamette Valley, where nearly the entire U.S. crop is produced. It is also known for the innovative cultivars developed at Oregon State ...

Researchers focus on helping hazelnut bloom

Primary tabs

Nik Wiman

Research Way Laboratory Building

Research Way Laboratory Building 4575 SW Research Way

Extension Service Site Publications

Brown Marmorated Stink Bugs endanger $132 million hazelnut crop

Brown Marmorated Stink Bugs endanger $132 million hazelnut crop

Non-native stink bugs lay some stank on Oregon crops

Non-native stink bugs lay some stank on Oregon crops

Large increase of brown marmolated stink bugs poses serious threat to Oregon crops

Large increase of brown marmolated stink bugs poses serious threat to Oregon crops

OSU research helps hazelnuts thrive

OSU research helps hazelnuts thrive

Oregon Hazelnuts Rebound After Fierce Ice Storm

Oregon Hazelnuts Rebound After Fierce Ice Storm

Researchers focus on helping hazelnut bloom

Researchers focus on helping hazelnut bloom

Student Resources

Employee Resources

New Employees