![Close-up of horseweed.](https://wpcdn.web.wsu.edu/cahnrs/uploads/sites/16/Horseweed-1024x768.jpg)
![Close-up of horseweed.](https://wpcdn.web.wsu.edu/cahnrs/uploads/sites/16/Horseweed-1024x768.jpg)
What’s
New Publication: Italian Ryegrass Management in Dryland
What You Need to Know About Pesticides and the Endangered Species Act
Making Sense of the New EPA Mitigation Requirements for Pesticide Applicators
![Wheat Beat podcast logo.](https://wpcdn.web.wsu.edu/cahnrs/uploads/sites/16/WSU-Wheat-Beat-Episode-5-Randy-Fortenbery-mp3-image-300x300.jpg)
- Mapping It Out: Soil Acidity, Lime Requirements, and Herbicide Resistance with Dr. Joaquin Casanova
- Crossing the Boundaries of Herbicide Resistance with Drs. Ian Burke and Nick Bergmann
- Impacts of Seed Size and Rates on Spring Wheat Performance with Dr. Clark Neely
- Staying Upwind of Russian Thistle with Dr. Ian Burke
- Community-Based Management of Herbicide Resistance with Dr. Nick Bergmann
![Take me to Weeders of the West.](https://wpcdn.web.wsu.edu/cahnrs/uploads/sites/16/weeders-of-the-west-logo-e1701364686873.gif)
- New Herbicide Resistance Resources New
- Glyphosate-resistant hairy fleabane and horseweed populations in the Pacific Northwest
- Creative Weed Management Approaches Using Forage Crops
- Weed Control in Organic Blueberries: How Electricity is Changing the Game!
- Drone Pesticide Application: the second take
Featured Video and Articles
![Go to pnwhr.org.](https://wpcdn.web.wsu.edu/cahnrs/uploads/sites/16/Mayweed-Chickpeas-Cropped.jpg)
Pacific Northwest Herbicide Resistance Initiative
The Pacific Northwest Herbicide Resistance Initiative (PNWHRI) provides ongoing support for programs and projects focused on managing herbicide-resistant weeds across the PNW, with a special focus on cereals producing regions.
![](https://wpcdn.web.wsu.edu/cahnrs/uploads/sites/16/New-Weed-Jumble-998x1024.jpg)
Think you know PNW weeds? See how well you do with our fun weed quiz.
Common
Herbicide Resources
New Publication: Italian Ryegrass Management in Dryland
Washington Grain Commission Provides Over $2 Million for Wheat and Barley Research
Report on 2023 Weed Control Studies Is Available
![](https://wpcdn.web.wsu.edu/cahnrs/uploads/sites/16/pnw778-edited.jpeg)
New! Italian Ryegrass Management in Inland Pacific Northwest Dryland Cropping Systems
Widespread herbicide resistance in Italian ryegrass makes integrated weed management strategies difficult for this problematic weed. Learn about the multiple control methods that can be combined in various ways for wheat-based cropping systems for better long-term control.
![](https://wpcdn.web.wsu.edu/cahnrs/uploads/sites/16/pnw754.png)
Best Management Practices for Managing Herbicide Resistance
Over-reliance on herbicides for the management of weeds is a major cause of herbicide resistance. This publication presents growers and farm managers with best management practices (BMPs) that can be incorporated into farming systems to manage herbicide resistance.
Resistance Testing Program
Submitting a sample to the WSU Resistance Testing Program is easy. View the Resistance Testing Program webpage for details about how to submit samples.
![Wheat Beat podcast logo.](https://wpcdn.web.wsu.edu/cahnrs/uploads/sites/16/WSU-Wheat-Beat-Episode-5-Randy-Fortenbery-mp3-image-300x300.jpg)
- Mapping It Out: Soil Acidity, Lime Requirements, and Herbicide Resistance with Dr. Joaquin Casanova
- Crossing the Boundaries of Herbicide Resistance with Drs. Ian Burke and Nick Bergmann
- Staying Upwind of Russian Thistle with Dr. Ian Burke
- Community-Based Management of Herbicide Resistance with Dr. Nick Bergmann
- Preemergence Herbicides for Grass Control with Dr. Ian Burke
![Take me to Weeders of the West.](https://wpcdn.web.wsu.edu/cahnrs/uploads/sites/16/weeders-of-the-west-logo-e1701364686873.gif)
- New Herbicide Resistance Resources New
- Glyphosate-resistant hairy fleabane and horseweed populations in the Pacific Northwest New
- The Global Challenge of Herbicide-Resistant Weeds
- Managing Herbicide Resistance: A Community-Focused Approach
- Herbicide Mixtures for Resistance Management? Well, It Is Complicated!
The Basics of Herbicide Resistance (opens in new tab)
Weed Decision & Calculators
Winter Wheat Herbicide Efficacy Tables
Find the most effective herbicide options for the selected weed species in your winter wheat crop.
Pulse Crops Mechanisms of Action (MOA) Tool
Query a database of herbicide trade names, active ingredients, mechanisms of action, and Washington weed species with confirmed resistance to one or more herbicides.
Wheat Mechanisms of Action (MOA) Tool
Query a database of herbicide trade names, active ingredients, mechanisms of action, and Washington weed species with confirmed resistance to one or more herbicides.
If you require an alternative format for any of the content provided on this website, please contact us at small.grains@wsu.edu.