Metamifop Rates, Application Timings, and Broadleaf Herbicide Admixtures Affect Smooth Crabgrass Control in Turf

Cox, M. C.; Askew, Shawn D.

doi:10.1614/wt-d-14-00011.1

Cited by 5 publications

(6 citation statements)

References 37 publications

(43 reference statements)

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“…Metamifop rates totaling 400 gÁha -1 or greater resulted in ‡80% smooth crabgrass control 56 DAIT. These data were consistent with those of Cox and Askew (2014), who found that 400 gÁha -1 resulted in 88% control at 8 weeks after treatment. Metamifop treatments applied sequentially at 3-week intervals offered greater and more prolonged control (at 56 DAIT) than those applied only once, with the exception of the highest rate of 800 gÁha -1 .…”

Section: Resultssupporting

confidence: 92%

“…Like other AOPP herbicides, metamifop does not affect eudicotyledonous plants because of limited activity against cytosolic, the prokaryotic ACCase (Burton et al, 1987;Senseman, 2007) may be because of an altered binding site within the ACCase target enzyme (Senseman, 2007;Stoltenberg et al, 1989). Irrespective of the specific mechanism, metamifop appears to be safer to cool-season turfgrasses while offering comparable control to other herbicides currently marked for crabgrass and goosegrass control (Cox and Askew, 2014;Flessner and McElroy, 2011;Kim et al, 2003a;Post and Askew, 2010). The most efficacious rates and sequential application timings to achieve smooth crabgrass and goosegrass control have not been established.…”

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confidence: 99%

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Smooth Crabgrass and Goosegrass Control with Metamifop in Creeping Bentgrass

Parker

McElroy

Flessner

2015

hortte

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Smooth crabgrass (Digitaria ischaemum) and goosegrass (Eleusine indica) are problematic weeds in creeping bentgrass (Agrostis stolonifera) because of limited herbicide options for postemergence (POST) control and turfgrass injury potential. Metamifop is a herbicide currently being considered for release to markets in the United States but information is lacking on the most effective rates and application timings for smooth crabgrass and goosegrass control in creeping bentgrass. Field trials were conducted in Auburn, AL in 2009 and 2013 to evaluate metamifop rates (200 to 800 g·ha−1) and single or sequential application timings compared with fenoxaprop (51 to 200 g·ha−1) at two different mowing heights. Metamifop applied twice and three times sequentially at 200 g·ha−1 provided the greatest smooth crabgrass (>97%) and goosegrass (>90%) control at rough (1½ inch) and green (1/8 inch) mowing heights without unacceptable creeping bentgrass injury at 56 days after initial treatment. All treatments caused <20% visible injury on creeping bentgrass at both mowing heights except the highest rate of metamifop. Smooth crabgrass control at the green mowing height was greater than at the rough mowing height, especially at lower metamifop rates with a single application.

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Section: Resultssupporting

confidence: 92%

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confidence: 99%

Smooth Crabgrass and Goosegrass Control with Metamifop in Creeping Bentgrass

Parker

McElroy

Flessner

2015

hortte

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“…Although fenoxaprop, metamifop, and quinclorac have controlled smooth crabgrass at higher rates and height of turfgrass cut (Cox and Askew 2014;Dernoeden et al 2003;Derr 2002;Johnson 1995;Neal et al 1990), only one study has reported smooth crabgrass control on creeping bentgrass greens with any of these herbicides (Parker et al 2015). In that study, metamifop controlled smooth crabgrass comparably to the current study and fenoxaprop applied thrice at 3-wk reapplication intervals controlled smooth crabgrass by 74%, which is significantly lower than our results from eight weekly treatments.…”

Section: Weed Control From Low-dose Herbicide Programscontrasting

confidence: 68%

“…Topramezone has not been evaluated on golf putting greens in peer-reviewed works, but can control both goosegrass and smooth crabgrass at rates from 6.1 to 24 g ae ha −1 in other turf species (Brosnan et al 2014;Cox et al 2017). Metamifop is an experimental herbicide that when applied in single, high-rate doses was safely used on creeping bentgrass putting greens (Parker et al 2015) and controlled both goosegrass (McCullough et al 2016;Parker et al 2015) and smooth crabgrass (Cox and Askew 2014;Parker et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Investigating low-dose herbicide programs for goosegrass (Eleusine indica) and smooth crabgrass (Digitaria ischaemum) control on creeping bentgrass greens

Brewer

Askew

2021

Weed Technol

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Only four herbicides are registered for smooth crabgrass or goosegrass control on creeping bentgrass golf putting greens. None of the four herbicides control weedy grasses for the entire season or control weeds postemergence when applied once at labeled rates. Three of these have product labels that prohibit repeated use or application during stressful summer conditions. We hypothesized frequently applying herbicides at low doses could provide season-long control of summer grasses while minimizing turf injury. Seven field experiments were conducted on creeping bentgrass putting greens to evaluate various herbicides applied monthly, biweekly, or weekly for postemergence and residual control of goosegrass and smooth crabgrass as well as creeping bentgrass putting green tolerance. Metamifop applied twice monthly at 200 g ai ha−1, topramezone applied eight times weekly at 1.5 g ae ha−1, and siduron applied weekly at 5.6 kg ai ha−1 or four times biweekly at 11 kg ha−1 did not injure creeping bentgrass greater than 10% and maintained creeping bentgrass quality and cover equivalent to nontreated turf. Weekly or biweekly programs of fenoxaprop or quinclorac caused unacceptable injury and quality decline. Metamifop applied monthly and either fenoxaprop program controlled both smooth crabgrass and goosegrass 97 to 99% throughout the growing season. Programs containing either quinclorac or siduron controlled smooth crabgrass 99 to 100% but did not control goosegrass greater than 39%. All topramezone programs controlled smooth crabgrass 69 to 77% and goosegrass 93 to 98%. In additional studies, siduron applied five times biweekly did not injure creeping bentgrass putting greens and controlled smooth crabgrass greater than 90% at seasonal, cumulative rates between 17 and 65 kg ai ha−1. This method of frequent, low-dose herbicide treatment to control smooth crabgrass and goosegrass on golf putting greens is novel and could be legally implemented currently with siduron.

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“…The tank mixture between ACCase enzyme inhibiting herbicides and auxin herbicides impair the performance of the former (ABIT et al, 2011;COX & ASKEW, 2014;WEBSTER et al, 2019). However, the existence and intensity of the antagonistic effect depend on the target species.…”

Section: Introductionmentioning

confidence: 99%

Interaction of acetyl-CoA carboxylase enzyme inhibiting herbicides with auxin herbicides on ryegrass

et al. 2021

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This study aimed to evaluate the antagonistic effect of the mixture ofacetyl coenzyme-A carboxylase (ACCase) enzyme inhibiting herbicides and auxin herbicides in Lolium multiflorum and to determine mechanisms to mitigate this possible effect. The first experiments were conducted by associating the herbicide clethodim (108 g a.i. ha−1), quizalofop-p-ethyl (54 g a.i. ha−1), and clethodim + quizalofop-p-ethyl (108+54 g a.i. ha−1) with 2,4-D (1005 g a.e. ha−1) or triclopyr (720 g a.e. ha−1), in addition to the sole application of the respective graminicides. Another experiment included clethodim (54; 81; 108; 162; 216 g a.i. ha−1), quizalofop-p-ethyl (27; 40.5; 54; 81; 108 g a.i. ha−1), and clethodim + quizalofop-p-ethyl (54+27; 81+40.5; 108+54; 162+81; 216+108 g a.i. ha−1) mixed with 2,4-D (1005 g a.e. ha−1), or triclopyr (720 g a.e. ha−1), in addition to the control treatments without herbicide application. In the second experiment, herbicides clethodim (108 g a.i. ha−1), quizalofop-p-ethyl (54 g a.i. ha−1), and clethodim + quizalofop-p-ethyl (108+54 g a.i. ha−1) in combination with the herbicides 2,4-D (1005 g a.e. ha−1) or triclopyr (720 g a.e. ha−1)had malathion (1000 g a.i. ha−1) or glyphosate (720 g a.e. ha−1) mixed, in addition to the sole applications of the graminicides. The herbicide clethodim + quizalofop-p-ethyl did not present an antagonistic interaction with the auxin herbicides, and obtained 85% weed control. To obtain control similar to the sole application of this graminicide, the dose of the herbicide clethodim needs to be increased by 20%. However, the mixture of the herbicide quizalofop-p-ethyl with 2,4-D and triclopyr affects the ryegrass control. The use of strategies that increase the absorption of ACCase herbicides or the inhibition of P450 enzymes are ways to mitigate the antagonistic effect caused by the association of the two auxin herbicides.

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Metamifop Rates, Application Timings, and Broadleaf Herbicide Admixtures Affect Smooth Crabgrass Control in Turf

Cited by 5 publications

References 37 publications

Smooth Crabgrass and Goosegrass Control with Metamifop in Creeping Bentgrass

Smooth Crabgrass and Goosegrass Control with Metamifop in Creeping Bentgrass

Investigating low-dose herbicide programs for goosegrass (Eleusine indica) and smooth crabgrass (Digitaria ischaemum) control on creeping bentgrass greens

Interaction of acetyl-CoA carboxylase enzyme inhibiting herbicides with auxin herbicides on ryegrass

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