Postemergence Weed Control in Warm-season Turfgrass with a Mixture of Pyrimisulfan and Penoxsulam

Brosnan, James T.; Breeden, Gregory K.

doi:10.21273/hortsci13658-18

Cited by 4 publications

(1 citation statement)

References 12 publications

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“…Tall fescue seeded into penoxsulam 1 sulfentrazone 1 2,4-D 1 dicambatreated plots was consistently lower in cover, canopy height, and NDVI ratings compared with the nontreated. Penoxsulam is an acetolactate synthaseinhibiting herbicide with early postemergence activity on broadleaf weeds and is often combined with other herbicides for a broader spectrum of control with a single application (Brosnan and Breeden 2019). Sulfentrazone, a protoporphyrinogen oxidase inhibitor, is in the same i Herbicides were applied on 24 Aug 2020 (Olathe) and 2 Sep 2020 (Manhattan).…”

Section: Resultsmentioning

confidence: 99%

Establishment of Tall Fescue Seeded after Postemergence Broadleaf Herbicide Application

McFadden

Fry

Keeley

2023

hortte

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Successful weed control before seeding is necessary for proper turfgrass establishment. However, herbicide labels differ in the time required between application and seeding. The objective of this research was to determine the influence of four postemergence broadleaf combination herbicides on tall fescue (Festuca arundinacea) cover, normalized difference vegetation index (NDVI), and canopy height when seeded 0, 3, 7, and 14 days after herbicide application. Herbicide treatments included the following: 1) a nontreated control; 2) 0.03 lb/acre carfentrazone-ethyl + 0.09 lb/acre methylchlorophenoxypropionic acid (MCPP) + 1.44 lb/acre 2,4-dichlorophenoxyacetic acid (2,4-D) + 0.30 lb/acre dicamba; 3) 0.20 lb/acre fluroxypyr + 0.01 lb/acre halauxifen-methyl + 1.44 lb/acre 2,4-D choline; 4) 0.20 lb/acre triclopyr + 0.003 lb/acre pyraflufen-ethyl + 1.72 lb/acre 2,4-D + 0.14/acre dicamba; and 5) 0.04 lb/acre penoxsulam + 0.04 lb/acre sulfentrazone + 0.40 lb/acre 2,4-D + 0.11 lb/acre dicamba. Penoxsulam + sulfentrazone + 2,4-D + dicamba reduced tall fescue cover, NDVI, and canopy height compared with the nontreated. This research demonstrates seeding between 0 to 14 days after an application of carfentrazone-ethyl + MCPP + 2,4-D + dicamba, fluroxypyr + halauxifen-methyl + 2,4-D choline, or triclopyr + pyraflufen-ethyl + 2,4-D + dicamba will result in successful tall fescue establishment under the conditions evaluated in these experiments.

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Section: Resultsmentioning

confidence: 99%

Establishment of Tall Fescue Seeded after Postemergence Broadleaf Herbicide Application

McFadden

Fry

Keeley

2023

hortte

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Dissipation of Penoxsulam in Paddy Soil, Water and Plants, and Quantification of its Residues and its Residual Toxicity to Fish

Sondhia

2023

Environ. Process.

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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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Postemergence Weed Control in Warm-season Turfgrass with a Mixture of Pyrimisulfan and Penoxsulam

Abstract: Pyrimisulfan is a sulfonanilide herbicidal inhibitor of acetolactate synthase

Cited by 4 publications

References 12 publications

Establishment of Tall Fescue Seeded after Postemergence Broadleaf Herbicide Application

Establishment of Tall Fescue Seeded after Postemergence Broadleaf Herbicide Application

Dissipation of Penoxsulam in Paddy Soil, Water and Plants, and Quantification of its Residues and its Residual Toxicity to Fish

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

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