Sharing a link to an upcoming seminar on a broad screening of annual bluegrass (Poaannua) resistance to herbicides. This is related to aUSDA Specialty Crop Research Initiative grant called "ResistPoa".
From Weed Science Society of America press release:
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 project (www.resistpoa.org) 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 improved control and herbicide resistance mitigation.
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