Annual Bluegrass Control in Perennial Ryegrass and Tall Fescue with Bispyribac-sodium

McCullough, Patrick E.; Hart, Stephen E.

doi:10.1094/ats-2009-0508-01-rs

Cited by 8 publications

(7 citation statements)

References 14 publications

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“…In CBG, bispyribac‐sodium is currently the industry standard for POST ABG control and has been thoroughly researched (McCullough and Hart, 2008, 2009; McCullough and Hart, 2010; McDonald et al, 2006). Multiple applications on 2‐ to 3‐week intervals are highly effective for ABG control (Branham and Sharp, 2011; McCullough and Hart, 2009, 2010). Lycan and Hart (2006) found that two applications made 3 weeks apart in August at the equivalent of 6.0 oz/ac 17.6WSP formulation are effective in controlling ABG.…”

Section: Useful Conversionsmentioning

confidence: 99%

Herbicide Programs for Annual Bluegrass (Poa annua L.) Control in Nebraska

Reicher

Sousek

Giese

2017

Crop Forage & Turfgrass Mgmt

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Core Ideas Research done on annual bluegrass (ABG) control in other areas of the US are likely applicable to Nebraska. However, extreme weather can dramatically affect short‐term annual bluegrass cover and emphasize the need for long‐term control studies. Three fall POST applications of mesotrione plus prodiamine applied preemergence in August and/or November were effective for ABG control in Kentucky bluegrass fairways. Replacing mesotrione with ethofumesate was also effective when combined with prodiamine in August and November. June applications of bispyribac‐sodium at 4 oz/ac was highly effective for controlling ABG in creeping bentgrass fairways, and adding two more fall applications at the same rate improved control slightly, but there was no benefit to raising the rate to 6 oz/ac. Annual bluegrass (Poa annua L.) (ABG) is common in golf courses, and its control has been thoroughly researched in cool‐season turf east of the Mississippi River in the United States. However, ABG response to herbicides varies widely among environments and/or biotypes, and little ABG control research has been done in the northern Great Plains. Therefore, our objective was to validate ABG herbicide control systems in golf course fairways of Kentucky bluegrass (Poa pratensis L.) (KBG) or creeping bentgrass (Agrostis stolonifera L.) (CBG) in Nebraska. Preemergence (PRE) treatments of prodiamine or mesotrione were applied in late summer over 3 yr with or without fall postemergence (POST) treatments of mesotrione or ethofumesate for ABG control in a low‐mow KBG fairway. We also evaluated rate and frequency of bispyribac‐sodium applications with or without a late summer–applied PRE (dithiopyr) in early September for ABG control over 3 yr in a CBG fairway. Our research indicates that ABG control work done in other areas are likely applicable to Nebraska. Three fall POST applications of mesotrione plus prodiamine applied as a PRE in August and/or November was effective for ABG control in KBG fairways. Replacing mesotrione with ethofumesate was also effective when combined with prodiamine in August and November. June applications of bispyribac‐sodium at 4 oz/ac were highly effective for controlling ABG in CBG fairways, and adding two more fall applications at the same rate improved control slightly, but there was no benefit to raising the rate to 6 oz/ac. Lastly, extreme weather in one summer and one winter dramatically affected short‐term ABG cover and emphasized the need for long‐term control studies in areas with dramatic weather cycles.

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Section: Useful Conversionsmentioning

confidence: 99%

Herbicide Programs for Annual Bluegrass (Poa annua L.) Control in Nebraska

Reicher

Sousek

Giese

2017

Crop Forage & Turfgrass Mgmt

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“…Though mesotrione has potential for controlling annual bluegrass in Kentucky bluegrass, the inconsistency in control between years and/or locations in this study would be considered commercially unacceptable. However, this inconsistency is typical among other herbicides labeled for annual bluegrass control including ethofumesate (7,9,26) or bispyribac-sodium (11,21,31). Mesotrione is highly effective on creeping bentgrass (5,11,17) and a number of broadleaf weeds (12), thus fall applications could target these weeds primarily with Poa annua as a secondary target.…”

Section: Experiments 4: Applications For the Practitionermentioning

confidence: 99%

“…The most recent postemergence herbicide for annual bluegrass control is bispyribac‐sodium, which is effective for controlling annual bluegrass in fairway height creeping bentgrass or lawn height tall fescue ( Festuca arundinacea ) or perennial ryegrass (3,19,20,21,23). However, safety of bispyribac‐sodium on the desired turf is variable and it can be damaging on many Kentucky bluegrass cultivars (18,30).…”

Section: Introductionmentioning

confidence: 99%

Fall Applications of Mesotrione For Annual Bluegrass Control in Kentucky Bluegrass

Reicher

Weisenberger

Morton³

et al. 2011

Applied Turfgrass Science

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Annual bluegrass (Poa annua L.) is a problematic weed on golf courses, sports turf, sod production fields, and irrigated lawns, but few options exist for control of annual bluegrass in Kentucky bluegrass (Poa pratensis L.). However, mesotrione has shown promising activity against annual bluegrass and adequate turf safety on Kentucky bluegrass. Experiments were completed from 2004 through 2010 in Urbana, IL, and/or West Lafayette, IN, to refine application strategies for annual bluegrass control with mesotrione in the fall. Though acceptable control (> 80%) was obtained in some experiments, control was inconsistent or marginal depending on the location and year. Our current recommendations for fall‐applied mesotrione would include three applications, starting in mid‐ to late September, at rates between 0.11 and 0.17 kg ai/ha per application, and without follow‐up applications in April. Further research will have to improve consistency of Poa annua control with mesotrione for widespread commercial use.

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“…Post‐emergence herbicides have limitations on selectivity in cool‐season turfgrasses, and plant growth regulators only suppress annual bluegrass growth . Bispyribac‐sodium is an acetolactate synthase inhibitor that provides post‐emergence annual bluegrass control in creeping bentgrass ( Agrostist stolonifera L.) and perennial ryegrass ( Lolium perenne L.) . However, application timings of these herbicides are limited to spring or early summer to optimize control and turfgrass tolerance .…”

Section: Introductionmentioning

confidence: 99%

Physiological effects of temperature on turfgrass tolerance to amicarbazone

McCullough

Grey

2014

Pest Management Science

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Tall fescue is more tolerant to amicarbazone than annual bluegrass at moderate temperatures (≈25/20 °C) owing to less absorption and greater metabolism. However, tall fescue susceptibility to amicarbazone injury at high temperatures (40/35 °C) results from enhanced herbicide absorption compared with lower temperatures (25/20 °C). Bermudagrass is more tolerant to amicarbazone than annual bluegrass and tall fescue owing to less herbicide absorption, regardless of temperature.

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Annual Bluegrass Control in Perennial Ryegrass and Tall Fescue with Bispyribac-sodium

Cited by 8 publications

References 14 publications

Herbicide Programs for Annual Bluegrass (Poa annua L.) Control in Nebraska

Herbicide Programs for Annual Bluegrass (Poa annua L.) Control in Nebraska

Fall Applications of Mesotrione For Annual Bluegrass Control in Kentucky Bluegrass

Physiological effects of temperature on turfgrass tolerance to amicarbazone

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