Growing degree day data helps predict annual bluegrass flowering May 2022 Research leads to models used to schedule PGR applications to suppress annual bluegrass seedhead production.
Controlling Poa annua with annual bluegrass weevil and PGRs April 2022 Can ABW, alone and in combination with PGR programs, be a viable tool to reduce annual bluegrass cover in creeping bentgrass fairways?
Is Poa annua really an annual species? January 2022 A series of experiments took a close look at Poa annua’s life cycle, a better understanding of which can help superintendents trying to eradicate or maintain it.
Natural alternatives for annual bluegrass control December 2021 Are there any truly viable nonchemical options for Poa annua control in high-value turf? Researchers put 11 alternative treatments to the test.
Poa annua ‘remembers’ being mowed July 2021 Poa annua plants pass along an awareness of mowing stress to offspring. Learn more about the discovery, the research that inadvertently brought it to light, and what it means for Poa breeding.
Improving turfgrass survival of ice encasement July 2021 Could priming turf with certain chemicals give it a leg up on winter stress? Researchers investigated the impacts of various treatments on annual bluegrass recovery from prolonged ice cover.
Poa annua: Alternative control options December 2020 Lemon juice for Poa control? In the quest for non-herbicidal treatments, researchers tested several outside-the-box options. Here’s how they fared.
Reducing anthracnose with potassium and nitrogen November 2020 Anthracnose severity in annual bluegrass is strongly linked to N and K deficiencies. At what rates do these nutrients best team up to control the disease?
Fraise mowing for annual bluegrass control October 2020 The cultivation practice shows promise as a non-herbicidal means of annual bluegrass control. Researchers assessed its impacts and feasibility for golf turf managers.
The annual bluegrass seedbank vs. perennial ryegrass establishment August 2020 In sites infested with annual bluegrass, researchers tested the effectiveness of various herbicide programs in suppressing the persistent grass while maximizing establishment of perennial ryegrass.
PoaCure: Has annual bluegrass finally met its match? April 2020 A turf scientist provides an in-depth look at the herbicide PoaCure, including registration info, research findings, key considerations for successful use, and more.
Goodbye Poa annua, hello bentgrass April 2020 Go inside an Ohio golf club’s decision to transition greens and fairways from Poa to bentgrass and the many components involved, from shade to PGRs to patience.
Verdure: Winter applications for spring Poa annua seedhead suppression? March 2020 A turf scientist tested whether earlier applications of PGRs could deliver better control of annual bluegrass seedheads.
When is Poa annua seed most germinable in spring? February 2020 Well-timed collection of clippings can limit the introduction of additional — and potentially herbicide-resistant — seed into the seed bank.
Verdure: Poa management, Nordic style December 2019 Looking to thwart Poa annua invasion on red fescue greens, researchers experimented with blending more competitive grasses into the seed mix.
Suppressing Poa annua seedhead production November 2019 Researchers examined how well different mowing delays pre- and post-application of a plant growth regulator reduced seedhead counts in Poa annua greens.
Poa annua: A plan of action October 2019 A $5.7 million research project is aiming to provide a clearer picture of Poa annua herbicide resistance, establish BMPs for Poa control, and deliver new support tools.
Verdure: That’s a sappy relationship June 2019 Can different in-field plant measurements — a clipping sap test or handheld reflectance meters — be used assess turf’s foliar nitrogen status to minimize anthracnose?
Microdochium patch management without fungicides May 2019 Oregon State researchers have been evaluating alternatives for Microdochium patch control, including phosphorous acid, sulfur and iron sulfate.
Surveying herbicide resistance in annual bluegrass May 2019 A two-year project in Tennessee is aiming to identify effective and no-longer-effective herbicides for Poa annua control, and to get a better grasp of the scope of resistance.