Safety of Herbicides on ‘zenith’ Zoysiagrass Seedlings

Patton, Aaron J.; Weisenberger, Daniel V.; Hardebeck, Glenn A.; Reicher, Zachary J.

doi:10.1614/wt-06-099.1

Cited by 12 publications

(22 citation statements)

References 14 publications

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“…Injury from combination products was greater in 2007 than 2008 on seedling turf, and in general these products caused more injury on seedlings than reports on established turf (5,7,10,30). This is consistent with previous reports in bermudagrass and zoysiagrass, where herbicide tolerance of seedlings improves as they mature (19,21).…”

Section: Herbicide Injury On Seedling Sea Spray Seashore Paspalumsupporting

confidence: 93%

Herbicide Tolerance on ‘Sea Spray’ Seashore Paspalum Seedlings

Patton

Trappe

Richardson

et al. 2009

Applied Turfgrass Science

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There are no reports of herbicide tolerance on seedling seashore paspalum (Paspalum vaginatum Sw.). The objective of this study was to determine which herbicides cause the least amount of injury to seashore paspalum seedlings and allow for maximum establishment. Field studies were conducted in 2007 and 2008 to assess the tolerance of ‘Sea Spray’ seashore paspalum to 23 herbicides. Herbicide treatments were applied two weeks after emergence of seedlings and compared to an untreated control. MSMA, imazaquin, fluazifop, triclopyr, siduron, and ethofumesate injured seedlings and reduced establishment. Clopyralid, halosulfuron, metsulfuron, quinclorac, carfentrazone, and salt water provided the least injury to seashore paspalum seedlings while allowing maximum establishment.

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Section: Herbicide Injury On Seedling Sea Spray Seashore Paspalumsupporting

confidence: 93%

Herbicide Tolerance on ‘Sea Spray’ Seashore Paspalum Seedlings

Patton

Trappe

Richardson

et al. 2009

Applied Turfgrass Science

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“…Fenoxaprop is registered for goosegrass ( Eleusine indica L.) control in zoysiagrass (10); however, Patton and Reicher (11) reported that fenoxaprop applied to Zenith zoysiagrass injured seedlings and reduced ground cover. Weed pressure can be significant in stands of the slow growing zoysiagrass (9,10,11,12). Selecting the appropriate herbicide will speed establishment (10), but herbicides used to reduce weed competition could also impede zoysiagrass growth and be more harmful than helpful (12).…”

Section: Bearded Sprangletop Control and Turfgrass Injury As Influencmentioning

confidence: 99%

Bearded Sprangletop Control in Turfgrass Sod Production

Grichar

2011

Applied Turfgrass Science

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Bearded sprangletop [Leptochloa fascicularis (Lam.) Gray] is a problem in turfgrass sod production because it is hard to control with commonly used turfgrass herbicides and can easily contaminate a sod production field, making the turf undesirable for sale to homeowners for use in lawn establishment. Studies were conducted from 2004 to 2007 along the upper Texas Gulf Coast turfgrass sod production areas to determine the most effective postemergence herbicides for control of bearded sprangletop. In one 2‐year study, bearded sprangletop control with fenoxaprop applied once and MSMA at 3.3 kg/ha applied twice, 7 to 10 days apart, varied from 17 to 77 % and 43 to 78%, respectively. Zoysiagrass (Zoysia japonica Steud.) turf injury was greatest with ethofumesate (12 to 50%). Fenoxaprop, MSMA plus trifloxysulfuron, and two applications of MSMA injured zoysiagrass at least 15% in one year but caused 4% or less injury in another year. In another two‐year study, nicosulfuron alone at 0.07 kg/ha controlled bearded sprangletop at least 97% while fenoxaprop alone controlled bearded sprangletop 98% in one year but did not control sprangletop the following year. A combination of nicosulfuron plus fenoxaprop plus MSMA controlled bearded sprangletop at least 96% in one year but controlled only 67% the next. Zoysiagrass (Bouteloua dactyloides Nutt.) injury was greatest with ethofumesate (50%) while fenoxaprop injury was 22%. All other herbicides caused 7% or less zoysiagrass injury. Buffalograss injury was greater than 60% with ethofumesate and nicosulfuron plus fenoxaprop plus MSMA while injury was 20% with MSMA and nicosulfuron. In conclusion, nicosulfuron alone at 0.07 kg/ha provided the most consistent control of bearded sprangletop in turfgrass sod production and caused no injury to zoysiagrass and 20% injury to buffalograss.

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“…Pronamide provides selective postemergence control of annual bluegrass and perennial ryegrass without causing damage or growth reduction to Zenith zoysiagrass seedlings (30). This product is registered as a restricted use pesticide which could preclude its use on some golf courses.…”

Section: Post‐seeding Weed Controlmentioning

confidence: 99%

“…Herbicides such as metsulfuron (2‐[[[[(4‐methoxy‐6‐methyl‐1,3,5‐triazin‐2‐yl)amino]carbonyl]amino]sulfonyl]benzoic acid) and fenoxaprop ((±)‐2‐[4‐[(6‐chloro‐2‐benzoxazolyl)oxy]phenoxy]propanoic acid) cause significant reduction in Zenith zoysiagrass coverage when applied to seedlings and should not be used during establishment (Figs. 8 and 9) (30,34). Other herbicides such as fluazifop ((R)‐2‐[4‐[[5‐(trifluoromethyl)‐2‐pyridinyl]oxy]phenoxy]propanoic acid) and foramsulfuron can damage Zenith zoysiagrass seedlings (30,34) and thus should be used on seedlings only when absolutely necessary and no other weed control options are available (Fig.…”

Section: Post‐seeding Weed Controlmentioning

confidence: 99%

“…8 and 9) (30,34). Other herbicides such as fluazifop ((R)‐2‐[4‐[[5‐(trifluoromethyl)‐2‐pyridinyl]oxy]phenoxy]propanoic acid) and foramsulfuron can damage Zenith zoysiagrass seedlings (30,34) and thus should be used on seedlings only when absolutely necessary and no other weed control options are available (Fig. 10).…”

Section: Post‐seeding Weed Controlmentioning

confidence: 99%

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