Evaluation of Sulfonylurea Herbicides on Cool and Warm Season Turf Species

Harrell, Michael S.; Williams, David W.; Brecke, Barry J.

doi:10.1094/ats-2005-1121-01-rs

Cited by 13 publications

(25 citation statements)

References 7 publications

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“…Single applications of flazasulfuron at turf dormancy caused 13 to 29% injury at 6 WAIT in both years, while sequential applications at dormancy caused 16 to 51% injury. Flazasulfuron treatments for controlling annual bluegrass generally cause minimal to no turf injury when bermudagrass is dormant, transitioning in spring, or actively growing (3, 7, 22). Although flazasulfuron may be safely applied to actively growing seashore paspalum (17), applications appear injurious at rates and timings required for annual bluegrass control during spring greenup.…”

Section: Resultsmentioning

confidence: 99%

“…Sulfonylureas vary in efficacy for controlling grassy weeds and may influence differential levels of turf species tolerance. For example, Harrell et al (7) noted foramsulfuron and trifloxysulfuron caused slight discoloration (≈10%) to bermudagrass and zoysiagrass, but these herbicides completely killed annual ryegrass ( Lolium multiflorum L.), perennial ryegrass ( Lolium perenne L.), and tall fescue (Festuca arundinacea Schreb.) after 35 days.…”

Section: Resultsmentioning

confidence: 99%

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Flazasulfuron Tank Mixtures with Amicarbazone for Annual Bluegrass Control in Seashore Paspalum

Johnston

McCullough

2014

Applied Turfgrass Science

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Flazasulfuron may be safely applied to actively growing seashore paspalum (Paspalum vaginatum Sw.), but applications for annual bluegrass control in late winter or spring could be injurious. A 3‐year field experiment was conducted to evaluate tank mixtures of flazasulfuron with amicarbazone at turf dormancy or partial greenup to determine if combinations could enhance annual bluegrass control and mitigate seashore paspalum injury compared to exclusive treatments. Single applications of flazasulfuron at 26 g a.i. ha−1 at both timings provided good (80 to 89%) to excellent (>90%) control of annual bluegrass in 2 of 3 years, while sequential applications provided ≥86% control at both timings in all 3 years. Tank mixtures of flazasulfuron at 26 g ha−1 plus amicarbazone at 196 g ha−1 significantly improved annual bluegrass control from flazasulfuron alone at 26 g ha−1 at both timings in 2 of 3 years. Amicarbazone tank mixtures did not improve annual bluegrass control from flazasulfuron at 52 g ha−1 alone at either timing. Late winter applications of amicarbazone at 196 g ha−1 alone provided poor annual bluegrass control (<70%) in 2 of 3 years while applications at turf greenup provided ≥88% control in all 3 years. Pronamide provided fair control (70 to 78%) and excellent control (≥90%) of annual bluegrass in 2 of 3 years when applied at dormancy or at greenup, respectively. All flazasulfuron treatments caused 36 to 54% injury when applied at greenup but single applications at dormancy caused 13 to 29% injury. Amicarbazone and pronamide alone never injured seashore paspalum greater than 17% at both application timings and treatments at greenup provided the best combinations of annual bluegrass control and turf tolerance.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Flazasulfuron Tank Mixtures with Amicarbazone for Annual Bluegrass Control in Seashore Paspalum

Johnston

McCullough

2014

Applied Turfgrass Science

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“…Weed established in dormant zoysiagrass reduces the aesthetic value as well as the playability during winter and spring months. Various pre-and post-emergent herbicides can be effective for control of winter weeds on zoysiagrass turf (Harrell et al, 2005;Johnson, 1980;Vargas and Turgeon, 2004). However, the main strategy adopted by golf course superintendents in this region is winter application of the non-selective herbicide glyphosate (Velsor et al, 1989), which is an economical and effective tool for control of a broad spectrum of weeds.…”

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confidence: 99%

Application of Glufosinate on Dormant Zoysiagrass (Zoysia japonica) Turf

Xiong¹,

Diesburg²,

Lloyd³

2013

horts

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Winter application of glyphosate on dormant zoysiagrasses (Zoysia spp.) is a common practice for control of fall-emerging weeds in the upper transition zone. However, repeated application can lead to selection of resistant weed populations. This study evaluated glufosinate, another non-selective herbicide, for weed control and safety on dormant zoysiagrass turf. Field plots were established on three sites during two growing seasons. At two application timings, glufosinate at rates of 0.84 or 1.68 kg·ha−1 were compared with glyphosate at 0.56 kg·ha−1 and a nontreated control. Application timings included 2 to 3 weeks or 2 to 3 days before zoysiagrass spring green-up. Regardless of rate, glufosinate was similar in effectiveness to glyphosate for control of annual bluegrass (Poa annua L.) and mouseear chickweed (Cerastium vulgatum L.). Application timing significantly affected phytotoxicity on zoysiagrass turf. For applications at 2 to 3 weeks before initiation of zoysiagrass green-up in spring, no negative impact on zoysiagrass was found. However, when applications were made within days of zoysiagrass resuming growth, both glufosinate and glyphosate reduced turf quality up to 40%. This study suggests that glufosinate can be an alternative to glyphosate for weed management on dormant zoysiagrass turf, but applications should be timed at least 2 weeks before initiation of spring growth.

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“…Sulfosulfuron is the least active on cool-season turfgrasses and has potential use for weed control in cool-season turfgrass (Lycan & Hart, 2004). Thus, these herbicides are commonly utilized in warmseason turfgrass for Poa annua control, with the least effective two being flazasulfuron and sulfosulfuron (Harrell et al, 2005;Toler et al, 2005). With the exception of foramsulfuron, these herbicides also control Cyperus and Kyllinga spp.…”

Section: Als-inhibiting Herbicidesmentioning

confidence: 99%

Use of herbicides on turfgrass

McElroy

Martins

2013

Planta daninha

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-In crop production, weeds must be controlled so as not to adversely affect crop yield and crop quality. Thus, a low level of weeds infesting a field, in most instances, is not a problem. Except in sod or seed production, turfgrass does not have a yield component. The value of turfgrass is its inherent aesthetic quality and usability. Aesthetic quality is the beauty and value that turfgrass adds to a managed landscape. Usability can be the durability of a sport field, trueness of golf putting green roll, or reduction in soil loss from water runoff or wind. Any weed presence in turfgrass can decrease the aesthetic quality and usability of turfgrass. Utilizing herbicides is the only way to completely control weeds in a turfgrass stand. While it is possible to reduce weed populations using cultural or mechanical management practices, it is impossible to completely eliminate weeds as can be accomplished with herbicides. This manuscript will review the major herbicides used in turfgrass in the United States with respect to their modes of action, herbicide family, and primary use in turfgrass.Keywords: preemergence, postemergence, selectivity, chemical control, weed.RESUMO -Nas culturas agrícolas as plantas daninhas devem ser controladas de modo a não afetar negativamente o rendimento e a qualidade do produto colhido. Deste modo, quantidades pequenas de plantas daninhas em um campo, na maioria dos casos, não é um problema, exceto na produção de sementes. Ressalta-se que em gramados não existe um componente de produção a se colhido. O valor do gramado é a sua qualidade inerente a estética e usabilidade. Qualidade estética é a beleza e o valor que acrescenta ao gramado em uma paisagem gerenciada. Usabilidade pode ser a durabilidade de um campo de esporte ou a redução na perda de solo pela erosão da água ou do vento. A presença de qualquer planta daninha em gramados pode diminuir a qualidade estética e usabilidade do gramado. Enquanto for possível reduzir a população de plantas daninhas utilizando práticas culturais ou mecânicas, não se poderá eliminá-las completamente. A utilização de herbicidas é a única maneira de controlar completamente as plantas daninhas em áreas de gramados. Esta revisão irá rever os principais herbicidas utilizados em gramados nos Estados Unidos com relação a seus modos de ação, a família de herbicidas e uso primário no gramado.Palavras-chave: pré-emergência, pós-emergência, seletividade, controle químico, plantas daninhas.

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Evaluation of Sulfonylurea Herbicides on Cool and Warm Season Turf Species

Cited by 13 publications

References 7 publications

Flazasulfuron Tank Mixtures with Amicarbazone for Annual Bluegrass Control in Seashore Paspalum

Flazasulfuron Tank Mixtures with Amicarbazone for Annual Bluegrass Control in Seashore Paspalum

Application of Glufosinate on Dormant Zoysiagrass (Zoysia japonica) Turf

Use of herbicides on turfgrass

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