Mugwort Control in an Abandoned Nursery Using Herbicides That Mimic Indole-3-Acetic Acid

Koepke-Hill, Rebecca M.; Armel, Gregory R.; Klingeman, William E.; Halcomb, Mark; Vargas, José J.; Flanagan, P.C.

doi:10.21273/horttech.21.5.558

Cited by 6 publications

(7 citation statements)

References 14 publications

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“…Aminocyclopyrachlor-methyl alone or in combination with 2,4-D or diflufenzopyr provided at least 90% control of trumpetcreeper in both studies by 2 MAT (Table 1). The herbicidal response observed in our studies was similar to other research describing aminocyclopyrachlor or aminocyclopyrachlor-methyl activity on other herbaceous perennial weeds (Koepke-Hill et al, 2011;Westra et al, 2008). In contrast, aminopyralid alone did not provide greater than 37% control of trumpetcreeper by 2 MAT.…”

Section: Resultssupporting

confidence: 91%

“…Therefore, while older chemicals that mimic indole-3acetic acid can suppress trumpetcreeper, it is important to evaluate new, more potent chemistries that target this mode of action for trumpetcreeper control. Aminocyclopyrachlor and aminopyralid are recently registered mimics of indole-3-acetic acid (Herbicide Resistance Action Committee Group O) that are used for control of perennial broadleaf plants in non-crop areas (Koepke-Hill et al, 2011;Senseman, 2007). Aminocyclopyrachlor has been evaluated in both its free acid and methyl ester forms, while aminopyralid has been primarily evaluated in its free acid form (Senseman, 2007;Turner et al, 2009).…”

mentioning

confidence: 99%

“…Both herbicides are systemic and readily absorbed through leaves and roots of susceptible plants (Bukun et al, 2010;Senseman, 2007). Several perennial weeds species have been controlled by each of these herbicides applied between 60 and 280 gÁha -1 (Enloe and Kniss, 2009;Ferrell et al, 2006;Koepke-Hill et al, 2011;Westra et al, 2008). In addition, each of these materials can often be applied in mixtures with other herbicides to broaden the spectrum of weeds controlled by a single application (Senseman, 2007;Turner et al, 2009).…”

mentioning

confidence: 99%

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Trumpetcreeper Control with Various Indole-3-Acetic Acid Mimics and Diflufenzopyr

Beeler¹,

Armel²,

Brosnan³

et al. 2012

hortte

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Trumpetcreeper (Campsis radicans) is a native, perennial, weedy vine of pastures, row crops, fence rows, and right-of-ways throughout most of the eastern United States. Field and greenhouse studies were conducted in 2008 and 2009 near Newport, TN, and in Knoxville, TN, to evaluate aminocyclopyrachlor-methyl and aminopyralid alone and in mixtures with 2,4-D and diflufenzopyr for selective trumpetcreeper control when applied postemergence in an abandoned nursery. These treatments were compared with commercial standards of dicamba and a prepackaged mixture of triclopyr plus 2,4-D. In the field, aminocyclopyrachlor-methyl alone controlled trumpetcreeper 77% to 93%, while aminopyralid alone only controlled trumpetcreeper 0% to 20% by 12 months after treatment (MAT). The addition of diflufenzopyr or 2,4-D to aminocyclopyrachlor-methyl did not improve trumpetcreeper control in the field; however, the addition of 2,4-D to aminopyralid improved control of trumpetcreeper from 50% to 58%. All aminocyclopyrachlor-methyl treatments controlled trumpetcreeper greater than or equal to dicamba and the prepackaged mixture of triclopyr plus 2,4-D. In the greenhouse, aminocyclopyrachlor and aminocyclopyrachlor-methyl applied at 8.75 to 35 g·ha−1 controlled trumpetcreeper 58% to 72% by 1 MAT. When both herbicides were applied at 70 g·ha−1, aminocyclopyrachlor controlled trumpetcreeper 64%, while aminocyclopyrachlor-methyl controlled trumpetcreeper 99%, similar to dicamba.

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Section: Resultssupporting

confidence: 91%

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confidence: 99%

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confidence: 99%

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Trumpetcreeper Control with Various Indole-3-Acetic Acid Mimics and Diflufenzopyr

Beeler¹,

Armel²,

Brosnan³

et al. 2012

hortte

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“…By 33 MAIT, all rates of aminopyralid were similar; however, rhizomes were still not completely eliminated with aminopyralid at 61 g ae ha −1 . No previous research has ever quantified reduction in A. vulgaris rhizome biomass following chemical control (Ahrens 1976;Bradley and Hagood 2000, 2002a, 2002bHenderson and Weller 1985;Koepke-Hill et al 2011). These studies were focused on short-term A. vulgaris control with visual control assessment as the only indicator of treatment efficacy.…”

Section: Artemisia Vulgaris Rhizome Biomassmentioning

confidence: 99%

“…Physical control methods, such as tilling, are not effective and inadvertently contribute to the spread of the plant (Klingeman et al 2004;Rogerson 1964). Herbicides such as aminopyralid, clopyralid, glyphosate, and picloram have provided variable (43% to 100%) control of A. vulgaris (Bingham 1965;Hagood 2000, 2002b;Koepke-Hill et al 2011). However, once the treatments ceased, regrowth of A. vulgaris occurred at 1 yr after treatment with all these herbicides, except picloram and clopyralid (Bradley and Hagood 2002b).…”

Section: Introductionmentioning

confidence: 99%

Role of nitrogen and herbicides in integrated management of mugwort (Artemisia vulgaris) in cool-season forage grasses

Aulakh

2020

Invasive plant sci. manag.

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Mugwort (Artemisia vulgaris L.) is becoming increasingly problematic in cool-season pastures and grasslands. A 3-yr field experiment evaluated different rates of nitrogen and herbicides for A. vulgaris management in a permanent grassland. The main plot had three nitrogen rates, 0, 62, and 124 kg N ha–1; the sub plot had three herbicides, aminopyralid, clopyralid, and glyphosate; and the sub-subplot had three herbicide rates, aminopyralid (61, 122, and 244 g ae ha–1); clopyralid (140, 280, and 560 g ae ha–1); and glyphosate (552, 1,104, and 2,208 g ae ha–1). Results revealed that nitrogen had no effect on A. vulgaris control, rhizome biomass, and stem density. However, cool-season grass biomass was the highest (7,126 kg ha–1) in the plots that received 124 kg N ha–1 and 244 g ae ha–1 of aminopyralid. Only glyphosate caused grass injury which varied from 65% to 100% depending upon application rate. By 9 MAIT, A. vulgaris was controlled 60% to 98% with aminopyralid at ≥61 g ae ha–1 or glyphosate at ≥552 g ae ha–1. By 21 MAIT, aminopyralid at ≥122 g ae ha–1 or glyphosate at ≥1,104 g ae ha–1 resulted in >95% reduction in A. vulgaris stem density and rhizome biomass, and provided ≥98% visual control. By 33 MAIT, complete control of A. vulgaris was confirmed in plots treated with aminopyralid at ≥122 g ae ha–1 or glyphosate at ≥1,104 g ae ha–1. Clopyralid was not effective; A. vulgaris control was <40% even after three annual applications at 560 g ae ha–1. Results indicate that integration of nitrogen fertilization with aminopyralid did not improve A. vulgaris control, but was advantageous in enhancing cool-season grass productivity.

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Biokinetics and Efficacy of Aminocyclopyrachlor-Methyl Ester as Influenced by Diflufenzopyr

Vargas¹,

Brosnan²,

Mueller³

et al. 2014

Weed sci.

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Research studies evaluated effects of the auxin transport inhibitor, diflufenzopyr, on the biokinetics and efficacy of aminocyclopyrachlor-methyl ester (AMCP-ME) applications to black nightshade and large crabgrass. Absorption, translocation, and metabolism of 14C-AMCP-ME was quantified with and without diflufenzopyr (35 g ai ha−1). Diflufenzopyr had minimal effects on translocation of radioactivity in either species. Accumulation of radioactivity in aboveground plant sections of black nightshade was greater than or equal to that in large crabgrass by 72 h after treatment (HAT). In both species, metabolism of 14C-AMCP-ME was rapid, as 60 to 78% of the extracted radioactivity was the free acid metabolite 8 HAT. In the greenhouse, black nightshade and large crabgrass were treated with AMCP-ME (9, 18, and 35 g ai ha−1) alone and in combination with diflufenzopyr (35 g ha−1). Mixtures of AMCP-ME plus diflufenzopyr did not increase large crabgrass control compared with AMCP-ME alone at any time. Diflufenzopyr (35 g ha−1) increased black nightshade control with AMCP-ME (18 and 35 g ha−1) 7 d after treatment (DAT). However, this increase in control was not observed 14 or 28 DAT. All treatments containing AMCP-ME controlled large crabgrass 70 to 79% 28 DAT compared with > 93% for black nightshade at the same time point.

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Mugwort Control in an Abandoned Nursery Using Herbicides That Mimic Indole-3-Acetic Acid

Cited by 6 publications

References 14 publications

Trumpetcreeper Control with Various Indole-3-Acetic Acid Mimics and Diflufenzopyr

Trumpetcreeper Control with Various Indole-3-Acetic Acid Mimics and Diflufenzopyr

Role of nitrogen and herbicides in integrated management of mugwort (Artemisia vulgaris) in cool-season forage grasses

Biokinetics and Efficacy of Aminocyclopyrachlor-Methyl Ester as Influenced by Diflufenzopyr

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