Effect of Coapplied Glyphosate, Pyrithiobac, Pendimethalin, or<i>S</i>-Metolachlor on Cotton Injury, Growth, and Yield

Stephenson, Daniel O.; Bond, Jason A.; Landry, Randall L.; Edwards, H. Matthew

doi:10.1614/wt-d-12-00166.1

Cited by 12 publications

(11 citation statements)

References 32 publications

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“…Weed control programs aimed at managing herbicide-resistant weeds recommend the use of annual herbicide rotation and tank mixtures with multiple modes of action (Beckie et al 2006;Norsworthy et al 2012). Diversifying herbicide programs with the use of soil-applied residual PRE herbicides in conjunction with effective POST herbicides is critical for management of herbicideresistant weeds (Norsworthy et al 2012;Stephenson et al 2013). Previous researchers have reported variable levels of kochia control with PRE or POST herbicides.…”

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confidence: 99%

Effective Preemergence and Postemergence Herbicide Programs for Kochia Control

Kumar

Jha

2015

Weed technol.

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Field experiments were conducted in 2011 through 2013 at the MSU Southern Agricultural Research Center near Huntley, MT, to evaluate the effectiveness of various PRE and POST herbicide programs for kochia control in the absence of a crop. PRE herbicides labeled for corn, grain sorghum, soybean, wheat/barley, and/or in chemical fallow were applied at recommended field-use rates. Acetochlor + atrazine,S-metolachlor + atrazine + mesotrione, and sulfentrazone applied PRE provided ≥91% control of kochia at 12 wk after treatment (WAT). Metribuzin, metribuzin + linuron, and pyroxasulfone + atrazine PRE provided 82% control at 12 WAT. PRE control with acetochlor + flumetsulam + clopyralid, pyroxasulfone alone, and saflufenacil + 2,4-D was ≤23% at 12 WAT. Paraquat + atrazine, paraquat + linuron, and paraquat + metribuzin controlled kochia ≥98% at 5 WAT. POST control with bromoxynil + fluroxypyr, paraquat, tembotrione + atrazine, and topramezone + atrazine treatments averaged 84% at 5 WAT, and did not differ from glyphosate. Control with POST-applied bromoxynil + pyrasulfotole, dicamba, diflufenzopyr + dicamba + 2,4-D, saflufenacil, saflufenacil + 2,4-D, saflufenacil + linuron was 67 to 78% at 5 WAT. Because of the presence of kochia resistant to acetolactate synthase-inhibiting herbicides at the test site, cloransulam-methyl was not a viable option for kochia control. In a separate greenhouse study, kochia accessions showed differential response to the POST herbicides (labeled for corn or soybean) tested. Tembotrione + atrazine, topramezone + atrazine, lactofen, or fomesafen effectively controlled the glyphosate-resistant kochia accession tested. Growers should utilize these effective PRE- or POST-applied herbicide premixes or tank mixtures (multiple modes of action) to control herbicide-resistant kochia accessions in the field. PRE herbicides with 8 wk of soil-residual activity on kochia would be acceptable if crop competition were present; however, a follow-up herbicide application may be needed to obtain season-long kochia control in the absence of crop competition.

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confidence: 99%

Effective Preemergence and Postemergence Herbicide Programs for Kochia Control

Kumar

Jha

2015

Weed technol.

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“…There are known dose-dependent effects of other herbicides on various crops. Stephenson et al [26] found that S-metolachlor damaged cotton, while pendimethalin had no such effect. Smith [27] found that low-dose pendimethalin had no signi cant effect on the biomass of Basella alba.…”

Section: Resultsmentioning

confidence: 99%

Toxicity and Tissue Accumulation Characteristics of the Herbicide Pendimethalin in Ginger (Zingiber Officinale Roscoe)

Lv¹,

Li²,

Liu³

et al. 2020

Preprint

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BackgroundEnvironmental health and food safety issues potentially caused by the dinitroaniline herbicide pendimethalin are a worldwide concern. Due to its importance for crop plants, the determination of possible toxicity and accumulation characteristics of pendimethalin in ginger should be determined. ResultsThe toxicity response of ginger and tissue accumulation effects of pendimethalin on ginger biomass were studied by utilizing pendimethalin in a dose-response study. No significant effect on ginger biomass is observed when the concentration of pendimethalin used is less than 6.7 ppm, while > 10 ppm pendimethalin significantly reduces the biomass of ginger. This is attributed to root damage. The net photosynthetic rate of ginger when treated with 16.7 ppm pendimethalin is 11.37% lower than that of the control organisms, which is mainly caused by stomatal limitation. In addition, high-dose pendimethalin (16.7 ppm) causes the accumulation of reactive oxygen species (ROS) in ginger. The activity of superoxide dismutase (SOD) and peroxidase increases accordingly, maintaining the dynamic balance of ROS content. There is no significant effect on malondialdehyde levels or on membrane permeability. Pendimethalin has no significant effect on the expression of ginger α-tubulin mRNA. The damage of high-dose (16.7 ppm) pendimethalin to ginger is mainly caused by oxidative stress. Pendimethalin is significantly accumulated in ginger roots, but not rhizomes. ConclusionsBecause of this, application of pendimethalin to treat weeds in ginger fields may not pose a threat to human health.

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“…Although higher levels of injury were present, and plant height was reduced, cotton lint yield was unaffected by herbicide application. Stephenson et al (2013) reported that applications of S-metolachlor at two-to three-leaf cotton reduced plant height (5%) and number of nodes (6%) at 21 DAA, although cotton yield was not affected.…”

Section: Plant Growth and Development Parametersmentioning

confidence: 99%

Injury potential of herbicide combinations on XtendFlex® cotton

et al. 2021

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XtendFlex® technology from Bayer allows growers to apply glyphosate, glufosinate, and dicamba POST to cotton. Since the evolution and spread of glyphosate-resistant weed species, early POST applications with several modes of action have become common. However, crop injury potential from these applications warrants further examination. Field studies were conducted from 2015 to 2017 at two locations in Mississippi to evaluate XtendFlex® cotton injury from herbicide application. Herbicide applications were made to XtendFlex® cotton at the 3 to 6 leaf stage with herbicide combinations comprised of two, three, and four-way combinations of glyphosate, glufosinate, S-metolachlor, and three formulations of dicamba. Data collection included visual estimations of injury, stand counts, cotton height, total mainstem nodes, and nodes above whiteflower at first bloom. Data collection at the end of the season included cotton height, total mainstem nodes, and nodes above cracked boll. Visual estimations of injury from herbicide applications were highest at 3 days following applications containing glufosinate + S-metolachlor (36 to 41% injury) and glufosinate + S-metolachlor in combination with dicamba + glyphosate (39 to 41% injury), regardless of the dicamba formulation. Crop injury decreased at each rating interval and dissipated by 28 days following applications (p = 0.3748). Height reductions were present at first bloom and at the end of the season (p < 0.0001), although cotton yield was unaffected (p = 0.2089) even when injury at 3 days after treatment (DAA) was greater than 30%. Results indicate that growers may apply a variety of herbicide tank-mixtures to XtendFlex® cotton and expect no yield penalty. Furthermore, if growers are concerned with cotton injury after herbicide applications, the use of glufosinate in combination with S-metolachlor should be approached with caution in XtendFlex® cotton.

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Effect of Coapplied Glyphosate, Pyrithiobac, Pendimethalin, orS-Metolachlor on Cotton Injury, Growth, and Yield

Cited by 12 publications

References 32 publications

Effective Preemergence and Postemergence Herbicide Programs for Kochia Control

Effective Preemergence and Postemergence Herbicide Programs for Kochia Control

Toxicity and Tissue Accumulation Characteristics of the Herbicide Pendimethalin in Ginger (Zingiber Officinale Roscoe)

Injury potential of herbicide combinations on XtendFlex® cotton

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