Interactions of Diclofop-Methyl and 2,4-D in Cultivated Oats (Avena sativa)

Fletcher, R. A.; Drexler, Dóra

doi:10.1017/s004317450005548x

Cited by 43 publications

(28 citation statements)

References 5 publications

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“…2,4-D has also been reported to antagonize other herbicides, such as ACCase-inhibiting herbicides in wild oats, 5,18,32,33) Lolium rigidum, 19,20) and other weed species. 34) Therefore, tank-mixing 2,4-D with other herbicides should be exercised with caution.…”

Section: Discussionmentioning

confidence: 99%

2,4-D antagonizes glyphosate in glyphosate-resistant barnyard grass Echinochloa colona

Han

Bai

et al. 2020

J. Pestic. Sci.

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Glyphosate is often tank-mixed with auxinic herbicide 2,4-D for grass and broadleaf weed control. Here we examined the possible interaction of 2,4-D and glyphosate in barnyard grass, Echinochloa colona (L.) Link. The results showed that 2,4-D antagonizes glyphosate remarkably in glyphosateresistant populations but only marginally in susceptible populations. This antagonism is related to reduced glyphosate uptake and (to a lesser extent) translocation. As 2,4-D has multiple, unpredictable effects on other herbicides, care must be taken when tank-mixing herbicides with 2,4-D.

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Section: Discussionmentioning

confidence: 99%

2,4-D antagonizes glyphosate in glyphosate-resistant barnyard grass Echinochloa colona

Han

Bai

et al. 2020

J. Pestic. Sci.

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“…It is reported that phytotoxicity of AOPPs to sensitive plants can be antagonized by auxin compounds, and that the explanation for this effect of antagonism should be also included in the action mechanisms of AOPPs (Barnwell & Cobb 1994; Fletcher & Drexler 1980; Kafiz et al 1989). The present study further provides evidence for antagonism of auxin compounds to AOPPs through the mixture experiment of fluazifop‐butyl with 2,4‐D (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Although the chemistry of these two groups differs substantially, they show similar selectivity between gramineous and dicotyledonous plants. For the sensitive gramineous plants, both groups induced chlorosis and necrosis in the basal part of shoots of the seedlings (Hoerauf & Shimabukuro 1979; Fletcher & Drexler 1980; Hosaka et al 1984; Haga et al 1987; Nakahira 1998). Recent studies have provided evidence that the primary action site of both herbicide groups lies in the enzyme acetyl‐CoA carboxylase (ACCase), a plastid‐localized enzyme that catalyzes the ATP‐dependent carboxylation of acetyl‐CoA to form malonyl‐CoA (Burton et al 1989; Rendina & Felts 1988; Secor & Cseke 1988; Di Tomaso et al 1993).…”

Section: Introductionmentioning

confidence: 99%

Comparison of physiological effects of fluazifop‐butyl and sethoxydim on oat (Avena sativa L.)

Luo¹,

Matsumoto

Usui

2001

Weed Biology and Management

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Laboratory experiments were conducted to compare the physiological effects of two herbicides: fluazifop‐butyl {butyl (RS)‐2‐[4‐(5‐trifluoromethyl‐2‐pyridyloxy)phenoxy]‐propionate} and sethoxydim {(±)‐2‐[1‐(ethoxyimino)butyl]‐5‐[2‐(ethylthio)propyl]‐3‐hydroxy‐2‐cyclohexen‐1‐one} on oat (Avena sativa L. cv. Zenshin). The herbicides strongly inhibited growth of oat and induced chlorosis at the basal part of shoots and ethylene production from the seedlings. The phytotoxicity of these herbicides in oat seedlings was alleviated by 2,4‐D (2,4‐dichlorophenoxyacetic acid), but not by IAA (indole‐3‐acetic acid). Coleoptile elongation induced by 2,4‐D or IAA was inhibited by fluazifop‐butyl and sethoxydim, suggesting both herbicides possess the activity to inhibit this auxin action. Fluazifop (free acid) and sethoxydim inhibited proton excretion from oat roots but fluazifop‐butyl did not. This proton excretion was not restored by 2,4‐D or IAA. Furthermore, cellular electrolyte leakage in oat shoots was increased by both herbicides, indicating that the membrane permeability was increased. We conclude that fluazifop‐butyl and sethoxydim may have the same mechanism of action which leads to disruption of membrane integrity, although fluazifop‐butyl acts as a free acid after hydrolysis (fluazifop).

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“…Damaged plant cell membranes release cell electrolytes when leaves are immersed in water, and a technique that measures this release, percentage leakage, has been widely used to estimate plant damage such as that caused by herbicides (Fletcher and Drexler, 1980), and freezing (Flanagan and Sprague, 1961;Murray et al, 1989). It was used here as an indicator of leaf damage from slurries and this was related to visible scorch levels on the leaves.…”

Section: Introductionmentioning

confidence: 99%

The effect of sward height on responses of mini‐swards of perennial ryegrass/white clover to slurry application

Wightman¹,

Franklin

Younie³

1997

Grass and Forage Science

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The influence of sward height at the time of slurry application on sward responses to slurry was investigated using perennial ryegrass (Lolium perenne)/white clover (Trifolium repens) mini‐swards under greenhouse conditions. Pig slurry, cattle slurry and a fertilizer control were applied either to: swards cut 1 d before slurry application to heights of 2, 4 or 8 cm (CH2, CH4 or CH8); or to swards cut to 4 cm with regrowth intervals of 1, 4 or 8 d before slurry application (RI1, RI4 and RI8). Scorch, smother and growth of marked clover stolons and grass tillers were monitored after slurry application. Dry‐matter yields of both species were recorded over two harvests. Electrolyte leakage from leaves was used to assess leaf damage. Both slurries increased leakage, which was greatest from clover leaves, with biggest increases caused by pig slurry. Yield responses to slurry application varied with plant species and sward height. Reduced grass growth after slurry application to long swards (CH8, RI4, RI8) was probably caused by greater smother. In short swards (CH2), grass leaf growth was not depressed following slurry application but grass yields were reduced. Ammonia volatilization losses may have been greater in both long and short swards, contributing to yield reductions. Yield responses to slurry were greatest in swards cut to 4 cm, 1 d before application.

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Interactions of Diclofop-Methyl and 2,4-D in Cultivated Oats (Avena sativa)

Cited by 43 publications

References 5 publications

2,4-D antagonizes glyphosate in glyphosate-resistant barnyard grass <i>Echinochloa colona</i>

2,4-D antagonizes glyphosate in glyphosate-resistant barnyard grass <i>Echinochloa colona</i>

Comparison of physiological effects of fluazifop‐butyl and sethoxydim on oat (Avena sativa L.)

The effect of sward height on responses of mini‐swards of perennial ryegrass/white clover to slurry application

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