Multi-year Roughstalk Bluegrass Control in Creeping Bentgrass with Bispyribac-sodium and Sulfosulfuron

McCullough, Patrick E.; Hart, Stephen E.

doi:10.1094/ats-2011-0425-01-rs

Cited by 3 publications

(6 citation statements)

References 24 publications

(30 reference statements)

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“…This was especially true for fall applications , which injured creeping bentgrass ≥60%, 4 times the injury level caused by the spring applications (data not shown). Bispyribac-sodium efficacy for controlling roughstalk bluegrass in creeping bentgrass has been reported by other researchers, but trends were inconsistent and dependent on creeping bentgrass cultivars, trials, and temperature (McCullough and Hart 2006; McCullough and Hart 2011; Morton et al 2007; Thompson et al 2016).…”

Section: Resultsmentioning

confidence: 74%

“…Limited research is available on application timings and rates of methiozolin, alone or tank-mixed with currently available herbicides, for long-term roughstalk bluegrass control in creeping bentgrass turf managed at heights typical of golf fairways or athletic fields. In a multiyear study, McCullough and Hart (2011) found that sequential summer applications of bispyribac-sodium and sulfosulfuron suppressed roughstalk bluegrass cover in a creeping bentgrass fairway. However, cover suppression was apparent only during months of treatment application, and roughstalk bluegrass regrowth in fall following sequential summer applications of bispyribac-sodium and sulfosulfuron resulted in no roughstalk bluegrass cover reduction 10 months after the last treatment of a 2-yr application program.…”

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confidence: 99%

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Long-Term Roughstalk Bluegrass Control in Creeping Bentgrass Fairways

Rana¹,

Askew

2017

Weed Technol

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Methiozolin is an isoxazoline herbicide that selectively controls annual bluegrass in cool-season turf and may control roughstalk bluegrass, another weedy Poa species that is problematic in many turfgrass systems. However, the majority of research to date is limited to evaluating methiozolin efficacy for annual bluegrass control in creeping bentgrass putting greens. Research was conducted comparing various application regimes of methiozolin and other herbicides for long-term roughstalk bluegrass control in creeping bentgrass golf fairways. Methiozolin-only treatments did not injure creeping bentgrass or reduce normalized difference vegetative index (NDVI) at 2 golf course locations based on 20 evaluation dates over a 2.5-yr period. The 2.5-yr average turf quality generally declined as roughstalk bluegrass control increased due to transient turf cover loss. At 1 yr after last treatment, methiozolin at 1500 g ai ha-1 applied four times in fall reduced roughstalk bluegrass cover 85%. This was equivalent to methiozolin at 1000 g ha-1 applied four times in fall, but greater than low rates of methiozolin applied four times in spring or twice in fall and spring. Amicarbazone, primisulfuron, and bispyribac-sodium alone either did not effectively reduce roughstalk bluegrass cover, or did so at the expense of increased creeping bentgrass injury. Results of this study suggest that methiozolin alone or tank-mixed with amicarbazone or primisulfuron is an effective long-term approach for selectively controlling roughstalk bluegrass in creeping bentgrass.

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Section: Resultsmentioning

confidence: 74%

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confidence: 99%

Long-Term Roughstalk Bluegrass Control in Creeping Bentgrass Fairways

Rana¹,

Askew

2017

Weed Technol

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“…RB has become a frequent weed problem in desirable cool-season turfgrass lawns and seed crops. There are very limited chemical or cultural control methods for this weed species in mixed-stand conditions (McCullough and Hart 2011). Unfortunately, in the Willamette Valley of Oregon, the major production area of cool-season forage and turfgrass seed in the world, this weed species has increased rapidly in the past decade in some waterlogged fields of tall fescue (TF) and other cool-season grass seed crops.…”

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confidence: 99%

Waterlogging Influence on Roughstalk Bluegrass (Poa trivialis) and Tall Fescue Germination

Hulting

Mallory‐Smith

2017

Weed Technol

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Oregon’s Willamette Valley is the major cool-season, grass-seed-production area in the world. Roughstalk bluegrass (RB) is a weed in waterlogged, grass-seed-crop fields. Growth chamber and greenhouse studies were conducted to determine the influence of waterlogging on the germination and establishment of RB and tall fescue (TF). Oxygen deficiency resulted in a germination delay in both species, but was greater for TF. Oxygen deficiency at 20 and 30 C was greater for TF compared to RB. Simulated waterlogging for 28 d reduced aboveground biomass more for RB (58%) than for TF (46%), but did not influence seedling survival. Compared to TF, the influence of waterlogging on RB was greater during early establishment. These responses may help RB maintain its germination rate while reducing the damage caused by the accumulation of toxic fermentation-metabolites during waterlogging which benefits RB in competition with TF, especially under high temperatures.

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“…

R ough bluegrass (RBG; Poa trivialis L.) is a perennial cool-season turfgrass and a problematic weed in coolseason turf due to suboptimal color, invasive stoloniferous growth, and sensitivity to heat and drought. Naturalized populations spread vegetatively during routine aeration and from contamination in seed lots (Reicher et al, 2011).Bispyribac-sodium (Velocity) is the only product currently labeled for selective RBG removal in cool-season turf and is effective, but it can damage desirable species (McCullough and Hart, 2011) and is only labeled for sod-farm and golfcourse use. Nonselective herbicides are often the only option for RBG control in home lawns, but it is unclear if efficacy varies with seasonal application timing, like RBG response to bispyribac-sodium (McCullough and Hart, 2011).

…”

mentioning

confidence: 99%

“…Bispyribac‐sodium (Velocity) is the only product currently labeled for selective RBG removal in cool‐season turf and is effective, but it can damage desirable species (McCullough and Hart, 2011) and is only labeled for sod‐farm and golf‐course use. Nonselective herbicides are often the only option for RBG control in home lawns, but it is unclear if efficacy varies with seasonal application timing, like RBG response to bispyribac‐sodium (McCullough and Hart, 2011). Rough bluegrass persistence is anecdotally reported after late‐summer glyphosate application.…”

mentioning

confidence: 99%