Increase in resistance to sulfonylurea herbicides in Alopecurus myosuroides populations in north-eastern Poland

Stankiewicz‐Kosyl, M.; Wrochna, Mariola; Tołłoczko, Mateusz

doi:10.13080/z-a.2020.107.032

Cited by 3 publications

(1 citation statement)

References 26 publications

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“…The UK's latest report showed that the herbicide resistance-prone, outcrossing A. myosuroides exhibits low genetic differentiation amongst eld-collected populations, with some geographical (latitudinal and longitudinal) clines in genetic diversity and isolation by distance [23]. In Poland, herbicide-resistant blackgrass populations are mostly found in winter wheat, especially in the northeastern parts of the country [24,25,26].…”

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confidence: 99%

Intra and interspecies competition of blackgrass and wheat in context of herbicidal resistance and environmental conditions of Poland

Wenda-Piesik

Synowiec

Marcinkowska³

et al. 2022

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Blackgrass (Alopecurus myosuroides Huds.), one of the most aggressive grass-weeds in Europe, is also a strong competitor of crops. This study aimed to assess the impact of environmental conditions on the competition between 1) herbicide-resistant (BR) and susceptible (BS) blackgrass biotypes 2) the BR and winter wheat cv. Arkadia (W), and 3) the BS and W. In the replacement series model, the experiment was conducted in seven sites across Poland during two seasons (2018/19 and 2019/20). The competitive ratio (CR) was calculated for the relative biomass of plants and grain number. If CR < 1, the blackgrass is more competitive toward winter wheat, if CR > 1, the wheat is more competitive toward blackgrass. In the BR-BS experiment, the BS biotype was more competitive toward the BR one. We also found that the competitiveness between BR and BS was related to sand content in the soil. The combined interactions between W and BR or BS were also related to environmental conditions, i.e., soil texture and hydrothermal coefficient, as explained by PCA and k-means cluster analysis. In most sites, W was more competitive toward both BS and BR. Except was for two cases, located on heavy, clay soils, during humid seasons, where B was more competitive toward W. We summarize that blackgrass competitiveness towards other biotypes and wheat depends on environmental conditions; however, the phenomenon should be explored in more detail.

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Section: Introductionmentioning

confidence: 99%

Intra and interspecies competition of blackgrass and wheat in context of herbicidal resistance and environmental conditions of Poland

Wenda-Piesik

Synowiec

Marcinkowska³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

Intra- and interspecies competition of blackgrass and wheat in the context of herbicidal resistance and environmental conditions in Poland

Wenda-Piesik

Synowiec

Marcinkowska

et al. 2022

Sci Rep

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Blackgrass (Alopecurus myosuroides Huds.), one of the most aggressive grass weeds in Europe, is also a strong competitor of crops. This study aimed to assess the impact of environmental conditions on the competition between (1) ACC-ase and ALS herbicide-resistant (BR) and herbicide-susceptible (BS) blackgrass biotypes, (2) BR and winter wheat cv. Arkadia (W), and (3) BS and W. In the replacement series model, the experiment was conducted at seven sites across Poland during two seasons (2018/19 and 2019/20). In the BR-BS experiment, the BS biotype was in majority more competitive toward the BR biotype. However, in the regime of optimal hydrothermal conditions and at a higher sand content in the soil we observed a higher competitiveness of BR towards BS. The combined interactions between W and BR or BS were also affected by environmental conditions, i.e., soil texture and hydrothermal coefficient, as explained by PCA and k-means cluster analysis. At most sites, W was more competitive toward both BS and BR, which could result from earlier emergence of W in relation to B in majority of sites. Except for two cases, located on heavy, clay soils, during humid seasons, where B was more competitive toward W. We summarize that blackgrass competitiveness towards other biotypes and wheat depends to some extent on environmental conditions; however, the phenomenon should be explored in more detail.

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Stimulation of Early Post-Emergence Growth of Alopecurus myosuroides and Apera spica-venti Following Spray Application of ACCase Inhibitors

2023

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Resistance of blackgrass (Alopecurus myosuroides Huds.) and silky bentgrass (Apera spica-venti (L.) P. Beauv.) to ACCase inhibitors is a serious issue in winter cereals throughout Europe, especially as hormesis induced by herbicides has been observed in some populations. According to the literature, growth-stimulating herbicide rates are on the rise. The aim of this study was to assess the responses of A. myosuroides and A. spica-venti, which are potentially resistant to ACCase inhibitors, to fenoxaprop-P-ethyl and pinoxaden applied at rates up to 8 times greater than their registered rates. The reaction of A. myosuroides to fenoxaprop-P-ethyl and pinoxaden resulted in an increase in biomass gain in six and four populations, respectively. In one population of A. myosuroides, this increase was statistically significant (46.4% and 55.3%). All three potentially resistant A. spica-venti populations tested were at least partially stimulated by fenoxaprop-P-ethyl, while pinoxaden only stimulated the APSII population (significant increase of 43.8%). Predictions of the possible impact of herbicides on the reproductive potential of the tested populations allow genotypes to be identified whose reproduction may be stimulated by the herbicides. The results of this study indicate that the tested populations can induce mechanisms that reduce the negative impact of the applied herbicides, with some populations demonstrating the effect of stimulating the accumulation of biomass in the treated plants.

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Increase in resistance to sulfonylurea herbicides in Alopecurus myosuroides populations in north-eastern Poland

Cited by 3 publications

References 26 publications

Intra and interspecies competition of blackgrass and wheat in context of herbicidal resistance and environmental conditions of Poland

Intra and interspecies competition of blackgrass and wheat in context of herbicidal resistance and environmental conditions of Poland

Intra- and interspecies competition of blackgrass and wheat in the context of herbicidal resistance and environmental conditions in Poland

Stimulation of Early Post-Emergence Growth of Alopecurus myosuroides and Apera spica-venti Following Spray Application of ACCase Inhibitors

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