Graminicide antagonism by broadleaf weed herbicides

Barnwell, Philip; Cobb, A. H.

doi:10.1002/ps.2780410202

Cited by 31 publications

(28 citation statements)

References 52 publications

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“…Olson and Nalewaja (19) also reported antagonism following applications of auxin‐type broadleaf herbicides tank‐mixed with diclofop. While similar responses have also been reported by Shimabukuro et al (22) Fitzsimmons et al (12), and Barnwell and Cobb (4,5) with other aryloxyphenoxypropionic and auxin‐type herbicides, only a single study has reported this response in fine turf (10).…”

Section: Introductionsupporting

confidence: 81%

Fluroxypyr Compatibility with Fenoxaprop for Smooth Crabgrass and White Clover Control in Tall Fescue

McCullough

Brosnan

Breeden

2009

Applied Turfgrass Science

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Fenoxaprop effectively controls crabgrass (Digitariaspp.) in tall fescue (Festuca arundinacea Schreb.) turf. Antagonism with growth‐regulating herbicides reduces potential to apply fenaxoprop in combination with many products for broadleaf weed control. Fluroxypyr is a pyridinoxy acid, broadleaf herbicide which may have potential for use in mixtures with fenoxaprop. Field experiments investigated fenoxaprop efficacy for smooth crabgrass (Digitaria ischaemum) control when applied alone and in combination with either fluroxypyr or a pre‐packaged mixture of 2,4‐D, dicamba, and mecoprop (MCPP) in tall fescue. Smooth crabgrass control from mixtures of fenoxaprop and fluroxypyr was similar to fenoxaprop alone. Smooth crabgrass control with mixtures of fenoxaprop with 2,4‐D, plus dicamba, plus MCPP was nearly 50% less than fenoxaprop alone. White clover was completely controlled from mixtures of fenoxaprop and fluroxypyr which was similar to fenoxaprop applied with 2,4‐D plus dicamba plus MCPP. Tall fescue injury was not detected on any rating date. Results suggest tank mixtures of fenoxaprop and fluroxypyr could provide effective control of smooth crabgrass and white clover in tall fescue.

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Section: Introductionsupporting

confidence: 81%

Fluroxypyr Compatibility with Fenoxaprop for Smooth Crabgrass and White Clover Control in Tall Fescue

McCullough

Brosnan

Breeden

2009

Applied Turfgrass Science

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“…The low efficiency of mixtures between ALS-and ACCase-inhibiting herbicides had been related with reduced absorption (Cobb & Barnwell, 1994) or, in most cases, to reduced translocation of the ACCase inhibitor (Croon et al, 1989;Ferreira et al, 1995;Barnes & Oliver, 2004). The association with DPX-PE 350, an inhibitor of the ALS enzyme, decreased the translocation of fluazifop in Digitaria sanguinalis (Ferreira et al, 1995).…”

Section: Resultsmentioning

confidence: 99%

“…The association of imazethapyr with clethodim, fluazifop, quizalofop or sethoxydim reduced the effectiveness of Digitaria sanguinalis , Panicum dichotomiflorum and Brachiaria plantyphylla control, compared with the application of the grass herbicide alone (Myers & Coble, 1992). Reduction in the efficiency of ACCase-inhibiting herbicides when applied in combination with ALS-inhibitors may be due to reduced absorption (Barnwell & Cobb, 1994) or translocation of the grass herbicide (Ferreira et al, 1995;Barnes &Oliver, 2004). Mixtures of ALS-or ACCase-inhibitors with herbicides Antagonism is the predominant effect of herbicide mixtures used ... from other mechanisms of action in rice can also result in antagonism for barnyardgrass control.…”

Section: Introductionmentioning

confidence: 99%

ANTAGONISM IS THE PREDOMINANT EFFECT OF HERBICIDE MIXTURES USED FOR IMIDAZOLINONE-RESISTANT BARNYARDGRASS (Echinochloa crus-galli) CONTROL

Matzenbacher¹,

Kalsing²,

Dalazen

et al. 2015

Planta daninha

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-Herbicides mixtures are used in many situations without the adequate knowledge related with the effect on major target weeds. The objective of this study was to evaluate the effects of different herbicides mixtures used in irrigated rice in order to establish the adequate combinations for the prevention and management of herbicide resistance in barnyardgrass (Echinochloa crus-galli). Three experiments were performed at field conditions with all major post-emergent herbicides used in irrigated rice in Brazil. The first experiment was performed with barnyardgrass resistant to imidazolinone herbicides and herbicides applied at label rates. The second and third experiments were performed with barnyardgrass resistant and susceptible to imidazolinone herbicides applied at doses of 50 or 75% of the label rates. The occurrence of additive, synergistic and antagonistic effects was identified at 18, 18 and 64%, respectively, among the total of 50 different associations of herbicide and rates evaluated. In general, the mixture of ACCase inhibitors with ALS inhibitors, quinclorac, clomazone + propanil or thiobencarb resulted in antagonism. Sinergic mixtures were found in clomazone with propanil + thiobencarb, profoxydim with cyhalofop-butyl or clomazone, and quinclorac with imazapyr + imazapic, bispyribac-sodium or cyhalofop-butyl. The mixtures of quinclorac with profoxydim were antagonic. Rice grain yield varied according to the efficiency of weed control. Seveveral mixtures were effective for imidazolinone resistant barnyardgrass control.

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“…This antagonism has not been fully explained. Proposed hypotheses suggest either a decline in graminicide absorption or prevention of the inhibiting action of the graminicide on meristematic growth (Barnwell and Cobb 1994).…”

Section: Mode Of Toxic Actionmentioning

confidence: 99%

Chemistry and Fate of Triazolopyrimidine Sulfonamide Herbicides

Jabusch

Tjeerdema

2008

Reviews of Environmental Contamination and Toxicology

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The triazolopyrimidine sulfonamide (TSA) herbicides were registered in the United States in 1993. Their mode of action is by inhibition of acetolactate synthase (ALS), an enzyme common to plants and microorganisms but not found in animals. ALS inhibitors include other herbicide families such as the sulfonylureas, imidazolinones, and pyrimidinyl thiobenzoates. In the 1970s, sulfonylureas were the first ALS inhibitors to be introduced to the market. Their discovery was greeted as a great achievement because of their ability to suppress weeds at extremely low application rates compared to previously used herbicides and with low toxicity risk to humans and wildlife. By 1991, the market value of ALS inhibitors had reached $1.3 billion (U.S.). However, some of the problems associated with their use include the induction of resistance in weed species to both ALS-inhibiting and alternative herbicides. ALS inhibitors have also been found to damage nontarget plants at residual levels that are below the detection limits of standard analytical methods (Saari et al. 1994; Whitcomb 1999).

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Graminicide antagonism by broadleaf weed herbicides

Cited by 31 publications

References 52 publications

Fluroxypyr Compatibility with Fenoxaprop for Smooth Crabgrass and White Clover Control in Tall Fescue

Fluroxypyr Compatibility with Fenoxaprop for Smooth Crabgrass and White Clover Control in Tall Fescue

ANTAGONISM IS THE PREDOMINANT EFFECT OF HERBICIDE MIXTURES USED FOR IMIDAZOLINONE-RESISTANT BARNYARDGRASS (Echinochloa crus-galli) CONTROL

Chemistry and Fate of Triazolopyrimidine Sulfonamide Herbicides

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