Common Lespedeza (<i>Kummerowia striata</i>) Control within Maintained Centipedegrass Turf

McCurdy, James D.; McElroy, J. Scott; Flessner, Michael L.

doi:10.2134/cftm2015.0140

Cited by 2 publications

(2 citation statements)

References 12 publications

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“…Schindl.] is controlled by triclopyr but not by 2,4-D or quinclorac (Boyd 2009;McCurdy et al 2015); red sorrel (Rumex acetosella L.) is controlled by triclopyr but not effectively by 2,4-D (Munshaw et al 2015;Stopps et al 2011); sericea lespedeza [Lespedeza cuneata (Dum. Cours.)…”

Section: Herbicide Comparisonmentioning

confidence: 99%

Efficacy of triclopyr and synthetic auxin herbicide mixtures for common blue violet (Viola sororia) control

2020

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Common blue violet is a widely distributed, perennial broadleaf that is difficult to control in lawns. Two experiments were conducted to evaluate the efficacy of synthetic auxin herbicides and their mixtures or rate for common blue violet control. A herbicide comparison experiment was conducted with treatments including a nontreated check; 2,4-D dimethylamine; 2,4-D isooctyl ester (2,4-D ester); dichlorprop (2,4-DP) ethylhexyl ester, MCPA dimethylamine; mecoprop dimethylamine; triclopyr butoxyethyl ester; quinclorac; and mixtures of triclopyr + quinclorac; 2,4-D ester + 2,4-DP; 2,4-D ester + triclopyr; 2,4-D ester + 2,4-DP + triclopyr. All herbicides were applied at 1.12 kg ae ha−1 except quinclorac (0.84 kg ha−1). Additionally, a triclopyr dose-response experiment was conducted using rates of 0, 0.14, 0.28, 0.56, 0.84, and 1.12 kg ha−1. Epinasty ranged from 80% to 99% at 21 d after application for triclopyr-containing treatments and no more than 28% for all other treatments. Plant mass from harvest and regrowth data from the comparison experiment indicated triclopyr-containing treatments provided the highest common blue violet control. Mixtures containing triclopyr did not differ from triclopyr alone, indicating there was no added effect between herbicide mixtures. The triclopyr dose-response experiment confirmed triclopyr efficacy across data collection types. As triclopyr dose increased, violet epinasty increased and chlorophyll content and dry weight decreased. Triclopyr applied at 0.81 kg ha−1 or greater concentration provided 75% or greater control, as indicated by regrowth data. Many herbicides containing triclopyr are registered for use in turf, but most apply a concentration not greater than 0.56 kg ha−1 triclopyr when applied at the high label rate. Thus, to achieve good (75%) common blue violet control, turf managers should select products that contain triclopyr and apply doses of at least 0.81 kg ha−1 when used according to the label.

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Section: Herbicide Comparisonmentioning

confidence: 99%

Efficacy of triclopyr and synthetic auxin herbicide mixtures for common blue violet (Viola sororia) control

2020

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“…Aminocyclopyrachlor has desirable characteristics such as low use rates and low environmental toxicity (Turner et al, 2009), however, this product caused widespread injury to landscape trees and ornamentals when used in the landscape and was discontinued in 2011 (Patton et al, 2013). This herbicide is useful for controlling broadleaf weeds (Reed et al, 2013; Beck et al, 2014; McCurdy et al, 2015; Durham et al, 2016) with injury to some warm‐season grasses including St. Augustinegrass [ Stenotaphrum secondatum (Walt.) Ktze.…”

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confidence: 99%

Evaluation of Herbicides and their Tank‐Mixes for Suppression of Bermudagrass in Zoysiagrass

Patton

Trappe

Doroh

et al. 2017

Intl Turfgrass Soc Res J

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Zoysiagrass (Zoysia spp.) is a popular turfgrass species for use on lawns, sod farms, and golf courses in the transitional and southern climatic zones of the United States. One common problem in managing zoysiagrass is the contamination and subsequent removal of bermudagrass (Cynodon spp.). Various herbicides and herbicide tank‐mixes may be utilized for bermudagrass control in zoysiagrass. Research was conducted in Fayetteville, AR, and Auburn, AL, to evaluate aminocyclopyrachlor, fluazifop, fenoxaprop, triclopyr, and their combinations for bermudagrass suppression in zoysiagrass. Fluazifop at 0.105 kg active ingredient (a.i.) ha–1 suppressed bermudagrass most, but this application caused unacceptable injury and quality reduction to zoysiagrass. Tank‐mixing fluazifop or fenoxaprop at 0.14 kg ai ha–1 with triclopyr at 0.56 kg acid equivalent (a.e.) ha–1 reduced zoysiagrass injury and improved turf quality over fluazifop or fenoxaprop alone. Fluazifop + triclopyr provided more bermudagrass suppression than fenoxaprop + triclopyr. Aminocyclopyrachlor (0.026 or 0.071 kg a.e. ha–1) did not reduce herbicide injury from fluazifop or fenoxaprop applications to zoysiagrass and did not provide significant bermudagrass suppression. Results suggest that fluazifop + triclopyr and fenoxaprop + triclopyr remain the best treatments for bermudagrass suppression in zoysiagrass because they provide bermudagrass suppression without reducing zoysiagrass quality.

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Common Lespedeza (Kummerowia striata) Control within Maintained Centipedegrass Turf

Cited by 2 publications

References 12 publications

Efficacy of triclopyr and synthetic auxin herbicide mixtures for common blue violet (Viola sororia) control

Efficacy of triclopyr and synthetic auxin herbicide mixtures for common blue violet (Viola sororia) control

Evaluation of Herbicides and their Tank‐Mixes for Suppression of Bermudagrass in Zoysiagrass

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