Effect of Sulfosulfuron on ‘Penncross’ Creeping Bentgrass Seedlings when Applied Before or After Seeding

Rutledge, James M.; Weisenberger, Daniel V.; Reicher, Zachary J.

doi:10.1094/ats-2009-0710-01-rs

Cited by 4 publications

(4 citation statements)

References 9 publications

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“…Ethofumesate is recommended to be applied no earlier than 1 to 2 weeks after emergence of PRG and 8 weeks after emergence of KBG, whereas mesotrione is recommended to be applied no earlier than 4 weeks after emergence of either KBG or PRG (Syngenta Crop Protection, 2011; Bayer Environmental Science, 2012). Our results are similar to other research showing that even though herbicides applied shortly after seedling emergence may cause limited damage, cool‐season turfgrass quickly recovers with the lack of weed pressure (Sousek et al, 2014; Rutledge et al, 2009; Reicher et al, 1999, 2000).…”

Section: Evaluating Seed Ratios and Annual Bluegrass Herbicides With supporting

confidence: 91%

Kentucky Bluegrass: Perennial Ryegrass Seeding Ratios and Post-Seeding Herbicides Affect Species Composition of Fairways

Sousek

Reicher

2019

Crop, Forage & Turfgrass Management

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Applied Tur fgrass Science Core Ideas• On new fairways with limited annual bluegrass pressure, seeding ratios of 50-80% Kentucky bluegrass and 50-20% perennial ryegrass (by weight) should provide quick cover and result in primarily Kentucky bluegrass stands three years after seeding.• In areas with substantial annual bluegrass pressure, seed ratios of 80% or more Kentucky bluegrass can compete with annual bluegrass and resulted in coverage of 80% or more Kentucky bluegrass three years after seeding when treated with annual bluegrass herbicides shortly after seeding and annually thereafter.• Initiating an annual bluegrass control program shortly after seeding and maintaining this program thereafter is important to maximize Kentucky bluegrass coverage and minimize annual bluegrass coverage. AbstractIn the Great Plains of the United States, mixtures of Kentucky bluegrass (KBG) and perennial ryegrass (PRG) are used to establish or renovate golf course fairways or interseed existing fairways after summer damage. Kentucky bluegrass is the preferable permanent species in the Great Plains, whereas PRG is used primarily for quick germination and establishment. Stand composition is affected by weather, management factors, and weed competition such as from annual bluegrass (ABG) and thus is difficult to predict from any given seed mixture of KBG and PRG. Our objective was to follow species composition for 3 years in fairway-height stands seeded in mid-August with different ratios of KBG and PRG and treated immediately after seeding and yearly thereafter with annual bluegrass herbicides. On the research site with almost no ABG competition, all seeding mixtures (50-100% KBG: 50-0% PRG wt:wt) except 100% PRG produced turf stands with > 94% KBG cover 3 years after seeding. There were no adverse effects of multiple applications of ethofumesate or mesotrione starting 4 weeks after seeding (WAS) in spite of these applications being earlier than label recommendations. On the site with substantial ABG pressure, increasing PRG in the seed mixture hastened turf coverage, and seed ratios of 80% or more KBG resulted in ³ 80% KBG coverage after 3 years. Moreover, initiating ABG herbicides applications shortly after emergence and again each fall maximized short-term turf establishment and KBG coverage after 3 years, as well as minimized ABG coverage after 3 year. Gibeault et al. (1980) suggested a turf stand would ideally be composed of equal amounts of KBG and PRG, but short-term stand Crop Forage Turfgrass Manage. 5:190016.

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Section: Evaluating Seed Ratios and Annual Bluegrass Herbicides With supporting

confidence: 91%

Kentucky Bluegrass: Perennial Ryegrass Seeding Ratios and Post-Seeding Herbicides Affect Species Composition of Fairways

Sousek

Reicher

2019

Crop, Forage & Turfgrass Management

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“…Bispyribac-sodium is labeled for use in turfgrass as Velocity TM (Valent U.S.A. Corp., Walnut Creek, CA) and SULFO is labeled for use in turfgrass as Certainty TM (Monsanto, St. Louis, MO). Our previous research has shown that SULFO and BYS effectively control RBG (Morton et al, 2007;Rutledge et al, 2009). For instance, BYS at 56 or 74 gÁha -1 a.i.…”

mentioning

confidence: 98%

“…resulted in 93%, 95%, and 31% control, respectively (Askew et al, 2004). Because CBG can be safely seeded within 2 to 4 weeks of either BYS or SULFO application Hart, 2005, 2006;Rutledge et al, 2009), our objectives were to determine the most effective herbicide treatments for shortand long-term RBG control and to determine if interseeding with CBG after herbicide treatments will improve long-term control of RBG and conversion to CBG.…”

mentioning

confidence: 99%

Bispyribac–sodium, Sulfosulfuron, and Interseeding Creeping Bentgrass for Long-term Control of Roughstalk Bluegrass

Rutledge¹,

Morton²,

Weisenberger³

et al. 2010

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Roughstalk bluegrass (Poa trivialis L.) contamination is problematic on golf course fairways from the Midwest to the mid-Atlantic regions of the United States. Bispyribac–sodium and sulfosulfuron have potential to selectively control roughstalk bluegrass. Our objectives were to determine the most effective herbicide treatments for short- and long-term roughstalk bluegrass control and to determine if interseeding with creeping bentgrass (Agrostis stolonifera L.) after herbicide treatments will improve long-term control of roughstalk bluegrass or conversion to creeping bentgrass. Plots were treated with bispyribac–sodium or sulfosulfuron and then half of each plot was interseeded with creeping bentgrass in early August, 2 weeks after the final herbicide application in 2006, 2007, and 2008 in Indiana. Roughstalk bluegrass cover reduction was highest when treated with bispyribac–sodium at 56 or 74 g·ha−1 a.i. applied four times or sulfosulfuron at 27 g·ha−1 a.i. applied three times. Interseeding with creeping bentgrass improved long-term roughstalk bluegrass control and quickened conversion to creeping bentgrass. Furthermore, bispyribac–sodium and sulfosulfuron appeared to be more effective in the first 2 years of the study when seasonal heat stress was greater, which appeared to improve long-term roughstalk bluegrass control and promoted creeping bentgrass establishment. Chemical names used: {2,6-bis[(4,6-dimethoxypyrimidin-2-yl)oxy] benzoic acid} (bispyribac–sodium), {1-[4,6-dimethoxypyrimidin-2-yl]-3-[2-ethanesulfonyl-imidazo(1,2-a)pyridine-3-yl) sulfonyl]urea} (sulfosulfuron).

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“…Sulfosulfuron application timing before seeding has shown to influence establishment of cool-season grasses. Rutledge et al (2009) noted sulfosulfuron at 13 or 26 g a.i./ha applied the day of seeding or 2 weeks before significantly reduced 'Penncross' creeping bentgrass (Agrostis stolonifera L.) establishment, but applications made three weeks before seeding were safe. It was also reported that sulfosulfuron applied at 52 g a.i./ha was not safe at any timing before seeding.…”

Section: Resultsmentioning

confidence: 99%

Bermudagrass Reseeding Intervals for Rimsulfuron, Simazine, and Sulfosulfuron

McCullough¹,

Nutt²

2010

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Turf managers may wish to reseed common bermudagrass [Cynodon dactylon (L.) Pers.] following weed control with rimsulfuron, simazine, or sulfosulfuron applications, but establishment may be affected by herbicide residual activity. Field experiments were conducted in Georgia to investigate bermudagrass reseeding intervals for these herbicides. Application timing before seeding reduced bermudagrass establishment more than herbicide rate. By four weeks after seeding, bermudagrass cover was 15%, 53%, 81%, and 90% of the untreated from herbicides applied zero, two, four, or six weeks before seeding, respectively. Simazine at 2.24 kg a.i./ha reduced bermudagrass cover more frequently than sulfosulfuron at 0.035 and 0.07 kg a.i./ha and rimsulfuron at 0.02 kg a.i./ha. Results suggest that common bermudagrass may be safely reseeded four to six weeks after rimsulfuron, simazine, or sulfosulfuron treatments, but applications made closer to the seeding date have the potential to significantly delay establishment.

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Effect of Sulfosulfuron on ‘Penncross’ Creeping Bentgrass Seedlings when Applied Before or After Seeding

Cited by 4 publications

References 9 publications

Kentucky Bluegrass: Perennial Ryegrass Seeding Ratios and Post-Seeding Herbicides Affect Species Composition of Fairways

Kentucky Bluegrass: Perennial Ryegrass Seeding Ratios and Post-Seeding Herbicides Affect Species Composition of Fairways

Bispyribac–sodium, Sulfosulfuron, and Interseeding Creeping Bentgrass for Long-term Control of Roughstalk Bluegrass

Bermudagrass Reseeding Intervals for Rimsulfuron, Simazine, and Sulfosulfuron

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