Effects of adjuvants and carriers on propoxycarbazone and pyroxsulam efficacy on Bromus sterilis in winter wheat

Jursík, M.; Kolářová, Michaela; Soukup, Josef; Žďárková, Veronika

doi:10.17221/273/2016-pse

Cited by 10 publications

(12 citation statements)

References 17 publications

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“…Seed samples in bulk were collected from at least 100 plants, from the same field (as described earlier), to ensure variability in the field collection. Ten seeds were directly sown in pots of approximately 343 cm 3 , filled with chernozem soil [high fertility property and moisture storage capacity, clay content 46% (loamy soil), soil pH (potassium chloride) 7.5, sorption capacity of soil: 209 mmol (+), 87 mg kg −1 phosphorus, 203 mg kg −1 potassium, 197 mg kg −1 magnesium, 8073 mg kg −1 calcium].The pot experiments were conducted in an open-air vegetation hall (with roof-top, to avoid the rain). The seedlings were regularly watered, and fertilizers were applied as required.…”

Section: Plant Materials and Growth Conditionsmentioning

confidence: 99%

“…In the Czech Republic, these troublesome weeds are known to occur in the lowland areas. Since the first reports in France (http://www.weedscience.org/Pages/Case.aspx?ResistID=9931), data pinpoint towards an astonishing rise in these noxious weeds triggering 30–60% yield losses in the productivity of winter wheat 2,3 . Apart from yield losses, previous studies also indicated that these weeds could cause lodging and interfere with the harvesting processes 4 .…”

Section: Introductionmentioning

confidence: 99%

“…aspx?ResistID=9931), data pinpoint towards an astonishing rise in these noxious weeds triggering 30-60% yield losses in the productivity of winter wheat. 2,3 Apart from yield losses, previous studies also indicated that these weeds could cause lodging and interfere with the harvesting processes. 4 The evolution of herbicide resistance in Bromus species has jeopardized their management in Europe where pyroxsulam, propoxycarbazone, mesosulfuron, and sulfosulfuron are mainly used, to control this species.…”

Section: Introductionmentioning

confidence: 99%

“…4 The evolution of herbicide resistance in Bromus species has jeopardized their management in Europe where pyroxsulam, propoxycarbazone, mesosulfuron, and sulfosulfuron are mainly used, to control this species. 3,5 Since their discovery and commercialization, acetolactate synthase (ALS)-inhibiting herbicides have been widely used for weed management due to their broad-spectrum weed control and low toxicity to mammals. 6,7 The ALS enzyme catalyses the first step in the synthesis of the branched-chain amino acids valine, leucine, and isoleucine.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced metabolism and target gene overexpression confer resistance against acetolactate synthase‐inhibiting herbicides in Bromus sterilis

Sen

Hamouzová

Mikulka

et al. 2021

Pest Management Science

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BACKGROUND Intensive application of acetolactate synthase (ALS)‐inhibiting herbicides has resulted in herbicide‐resistance in many weeds, including Bromus sterilis. The present study was conducted to identify the mechanisms conferring resistance to ALS‐inhibiting herbicides in a Bromus sterilis biotype. RESULTS Dose–response studies revealed the resistant biotype to be 288 times less sensitive to pyroxsulam than the susceptible biotype. Furthermore, experiment with a single‐dose, proved this biotype was also cross‐resistant to propoxycarbazone, iodosulfuron plus mesosulfuron and sulfosulfuron. Prior treatment with malathion, a known inhibitor of cytochrome P450s, reduced the level of resistance to pyroxsulam. No mutations were detected from the partial ALS gene sequencing. Flow cytometry and chromosome counting rejected ploidy level variation between the susceptible and resistant biotypes. Relative copy number variation ruled out gene amplification. Quantitative real‐time polymerase chain reaction (PCR) detected a significant difference in ALS gene expression between the susceptible and resistant biotypes. CONCLUSIONS Target gene overexpression and enhanced metabolism by cytochrome P450s are likely mechanisms of resistance to pyroxsulam in Bromus sterilis. The current findings highlight the need to monitor additional brome populations for herbicide resistance in Europe and endorse the need for alternate herbicides in integrated weed management to delay the possible evolution of herbicide resistance in these species. © 2020 Society of Chemical Industry

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Section: Plant Materials and Growth Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Enhanced metabolism and target gene overexpression confer resistance against acetolactate synthase‐inhibiting herbicides in Bromus sterilis

Sen

Hamouzová

Mikulka

et al. 2021

Pest Management Science

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“…Nowadays, commonly used formulations contain supplementary ingredients which work as carriers, surfactants, stabilizers or dyes [ 1 ]. Those which enhance biological activity of herbicide are called adjuvants [ 2 ]. They are classified as activators and spray or utility modifiers and are added to herbicide either at the factory or field level.…”

Section: Introductionmentioning

confidence: 99%

Commercial phenoxyacetic herbicides control heavy metal uptake by wheat in a divergent way than pure active substances alone

Skiba

Wolf

2017

Environ Sci Eur

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BackgroundImpact of two widely used commercial herbicides, i.e. Aminopielik D 450 SL and Chwastox 300 SL, on the uptake and translocation of selected heavy metals in wheat plants Triticum aestivum L. cultivated in the laboratory pot experiments was investigated. Mineral-humus, loamy sand soil representative for the central part of Poland was applied. Bioavailable, exchangeable and total forms of Cd, Co, Cu, Zn, Pb, and Mn were determined. Transfer coefficients, translocation, and bioaccumulation factors illustrating metal migration in the plant were investigated.ResultsAdministration of commercial herbicides significantly altered heavy metals uptake by wheat in a way distinctively different than that observed for the parent chemically pure synthetic auxins, i.e. 2,4-D and MCPA. In particular, Aminopielik D 450 SL and Chwastox 300 SL prompted heavy metals accumulation in roots as indicated by their high transfer coefficients. Further transport to above ground part of the plant was limited and element dependent.ConclusionsThis work clearly shows that commercial herbicide formulations may act in a distinctively different way than pure active ingredients alone.Electronic supplementary materialThe online version of this article (doi:10.1186/s12302-017-0124-y) contains supplementary material, which is available to authorized users.

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Urea ammonium nitrate as the carrier for preplant burndown herbicides

Mookodi,

Spackman,

Adjesiwor

2023

Agrosystems Geosci & Env

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Preplant weed control is a common practice for many small grain farmers. The timing of these applications often coincides with starter nitrogen (N) fertilizer application. Co‐application of the herbicides and N fertilizers, such as urea‐ammonium nitrate (UAN), can reduce the number of trips across the field, labor costs, and the costs of N and herbicide applications. However, there is a dearth of information on the effect of herbicide‐N fertilizer mixtures on herbicide efficacy. Field studies were conducted in the summer of 2021 and 2022 to evaluate the effect of UAN (32‐0‐0) rate (0%, 25%, 50%, 75%, and 100% of carrier volume) on the efficacy of three non‐selective herbicides (glyphosate [1260 g ae ha−1], paraquat [560 g ai ha−1], and tiafenacil [74 g ai ha−1]). There was no effect of UAN volume on herbicide efficacy. The addition of UAN did not reduce the efficacy of glyphosate, paraquat, or tiafenacil. At 3 weeks after herbicide application, glyphosate efficacy ranged from 92% to 94% (broadleaved weeds) and 97% (grassy weeds). Paraquat efficacy ranged from 63% to 87% (broadleaved weeds) and 87% (grassy weeds). Tiafenacil efficacy ranged from 52% to 74% (broadleaved weeds) and 70% (grassy weeds). Higher application volume may be needed to increase the efficacy of contact herbicides such as paraquat and tiafenacil.

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Effects of adjuvants and carriers on propoxycarbazone and pyroxsulam efficacy on Bromus sterilis in winter wheat

Cited by 10 publications

References 17 publications

Enhanced metabolism and target gene overexpression confer resistance against acetolactate synthase‐inhibiting herbicides in Bromus sterilis

Enhanced metabolism and target gene overexpression confer resistance against acetolactate synthase‐inhibiting herbicides in Bromus sterilis

Commercial phenoxyacetic herbicides control heavy metal uptake by wheat in a divergent way than pure active substances alone

Urea ammonium nitrate as the carrier for preplant burndown herbicides

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