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ARS Home » Pacific West Area » Corvallis, Oregon » Forage Seed and Cereal Research Unit » Research » Publications at this Location » Publication #403672
Research Project: Improving Plant, Soil, and Cropping Systems Health and Productivity through Advanced Integration of Comprehensive Management Practices

Location: Forage Seed and Cereal Research Unit

Title: Resist Poa EPA Webinar

Author
item MCCURDY, JAY - Mississippi State University
item Mattox, Clint
item BOWLING, REBECCA - University Of Tennessee
item BAGAVATHIANNAN, MUTHUKUMAR - Texas A&M University
item ERVIN, DAVID - Portland State University
item KOWALEWSKI, ALEC - Oregon State University

Submitted to: EPA Sponsored Workshop
Publication Type: Proceedings
Publication Acceptance Date: 4/26/2023
Publication Date: 4/26/2023
Citation: Mccurdy, J.D., Mattox, C.M., Bowling, R.G., Bagavathiannan, M.V., Ervin, D.E., Kowalewski, A.R. 2023. Resist Poa EPA Webinar. EPA Sponsored Workshop. https://www.youtube.com/watch?v=wjjN5KSwvGY

Interpretive Summary: A public presentation will be hosted by the Environmental Protection Agency (EPA) focusing on the findings of a USDA-SCRI (Specialty Crops Research Initiative) grant titled: ResistPoa (www.resistpoa.org). The ResistPoa project seeks to characterize the national distribution of herbicide-resistant P. annua and limit its impact as a weed on managed turfgrass systems through a coordinated research and outreach effort on its biology, resistance mechanisms, socioeconomic aspects, and alternative control methods. Panelists will discuss the project, its findings, and the potential for future research. Chief among the findings of the project has been the discovery of almost overwhelming presence of resistant populations in certain regions and scenarios. More than 560 of 1,349 total populations screened were suspected resistant to at least one herbicide mode of action. Investigations also revealed socio-economic constraints that affect control strategies and stewardship of herbicide technologies. Panelists will discuss integrated management practices that were developed as part of this multi-state project that can be implemented for effective control and herbicide resistance mitigation.

Technical Abstract: Annual bluegrass (Poa annua) is a common and troublesome weed in turfgrass and other landscapes. Its invasive biology and acquired herbicide resistance challenges turfgrass managers by increasing costs and compromising expected outcomes. The USDA-SCRI (Specialty Crops Research Initiative) funded ResistPoa (www.resistpoa.org) project seeks to characterize the national distribution of herbicide-resistant P. annua and limit its impact as a weed on managed turfgrass systems through a coordinated research and outreach effort on its biology, resistance mechanisms, socioeconomic aspects, and alternative control methods. Panelists will discuss the project, its findings, and the potential for future research. Chief among the findings of the project has been the discovery of almost overwhelming presence of resistant populations in certain regions and scenarios. More than 560 of 1,349 total populations screened were suspected resistant to at least one herbicide mode of action. Investigations also revealed socio-economic constraints that affect control strategies and stewardship of herbicide technologies. Panelists will discuss integrated management practices that were developed as part of this multi-state project that can be implemented for effective control and herbicide resistance mitigation.