Mesotrione Controls Creeping Bentgrass (Agrostis Stolonifera) in Kentucky Bluegrass

Jones, Marcus; Christians, Nick E.

doi:10.1614/wt-05-181.1

Cited by 18 publications

(26 citation statements)

References 10 publications

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“…Creeping bentgrass is particularly susceptible to bleaching from mesotrione and sequential applications may control established populations in tolerant turfgrasses (Jones and Christians 2007). Perhaps, a single mesotrione application could control creeping bentgrass seedlings in polyculture with other turfgrasses, such as tall fescue.…”

Section: Resultsmentioning

confidence: 99%

Creeping Bentgrass, Perennial Ryegrass, and Tall Fescue Tolerance to Topramezone During Establishment

Johnston

McCullough

2016

Weed technol.

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Topramezone controls weeds in tolerant, cool-season turfgrasses, but injury potential during establishment has received limited investigation. The objectives of this research were to evaluate the tolerance of ‘Penn A-4’ creeping bentgrass, ‘Manhattan V' perennial ryegrass, and ‘Titan' tall fescue to topramezone at 18.5, 37, or 74 g ae ha−1during establishment. Grasses were seeded in strips in October, and treatments were applied at 0, 2, 4, or 6 wk after seeding (WAS). Perennial ryegrass and tall fescue had minimal (≤ 8%) injury from all treatments, and ground cover was greater or equal to the nontreated at all application timings. Topramezone applied 4 WAS at 37 and 74 g ha−1injured creeping bentgrass 16 and 23% at 2 wk after treatment, respectively. However, all other topramezone rates and timings caused < 10% injury. Mesotrione at 175 g ai ha−1injured creeping bentgrass 14 to 43% at all timings and was more injurious than topramezone. Mesotrione applied at 2, 4, or 6 WAS controlled lesser swinecress ≥ 99% at 20 WAS, whereas applications on the day of seeding provided 71% control. All topramezone treatments provided poor control (< 70%) of lesser swinecress at 20 WAS. Overall, perennial ryegrass and tall fescue are tolerant to topramezone during establishment at the rates tested. Seedling creeping bentgrass has better tolerance to topramezone from 18.5 to 74 g ha−1, than to mesotrione at 175 g ha−1and may provide end-users an HPPD inhibitor for use during establishment.

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Section: Resultsmentioning

confidence: 99%

Creeping Bentgrass, Perennial Ryegrass, and Tall Fescue Tolerance to Topramezone During Establishment

Johnston

McCullough

2016

Weed technol.

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“…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. Further research could likely improve consistency of Poa annua control from mesotrione, but our current recommendations would include three applications in the fall starting in mid‐ to late September, application rates between 0.11 and 0.17 kg ai/ha per application, and no follow‐up applications in April.…”

Section: Experiments 4: Applications For the Practitionermentioning

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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“…However, application timings of these herbicides are limited to spring or early summer to optimize control and turfgrass tolerance . Ethofumesate and mesotrione may control young annual bluegrass, but erratic control and turf injury often limit potential for successful applications in cool‐season turfgrasses …”

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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Mesotrione Controls Creeping Bentgrass (Agrostis Stolonifera) in Kentucky Bluegrass

Cited by 18 publications

References 10 publications

Creeping Bentgrass, Perennial Ryegrass, and Tall Fescue Tolerance to Topramezone During Establishment

Creeping Bentgrass, Perennial Ryegrass, and Tall Fescue Tolerance to Topramezone During Establishment

Fall Applications of Mesotrione For Annual Bluegrass Control in Kentucky Bluegrass

Physiological effects of temperature on turfgrass tolerance to amicarbazone

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