Weed Resistance to Herbicides in the Czech Republic: History, Occurrence, Detection and Management

Hamouzová, Kateřina; Salava, J.; Soukup, Josef; Chodová, D.; Košnarová, Pavlína

doi:10.5772/33734

Cited by 5 publications

(6 citation statements)

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“…A logistic regression model performed across Europe revealed that crop rotation dominated by winter crops and conventional soil tillage significantly increases the probability of resistance selection of bentgrass [20]. Presently, there are 18 cases of herbicide-resistant bentgrass in 11 different countries in Europe, with most cases from the Czech Republic, Germany, and Poland [21][22][23]. Biotypes of bentgrass are resistant to the inhibitors of acetolactate synthase (ALS), photosystem II, and acetyl coenzyme-A carboxylase (ACC-ase), displaying single resistance, cross-resistance, and multiple resistance patterns [21].…”

Section: Introductionmentioning

confidence: 99%

Environmental Factors Effects on Winter Wheat Competition with Herbicide-Resistant or Susceptible Silky Bentgrass (Apera spica-venti L.) in Poland

et al. 2021

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Environmental factors, including weather and soil conditions, can affect the competitive effects of weeds on crops. This work aimed at a comparison of the competitive abilities of winter wheat toward bentgrass (Apera spica-venti (L.) P. Beauv) with single herbicide resistance, multiple herbicide resistance, or a susceptible biotype in different environmental conditions of Poland. A replacement series competition model was applied in field conditions in 2017–2018 and 2018–2019 across the country. A competitive ratio (CR) was calculated for the relative biomass of plants and grain number. A canonical variate analysis (CVA) was performed for biological parameters and a day-difference in emergence between winter wheat and bentgrass with the hydrothermal coefficient and soil texture in all of the sites in each season separately. Winter wheat emergence was correlated with the amount of precipitation after seeding, and was fastest for five days in humid conditions, and slowest up to 22 days, when the precipitation in October was low. The CVA proved that winter wheat’s competitive effects toward the susceptible or herbicide-resistant biotypes of bentgrass are site-specific. During the dry season, the bentgrass biotype with multiple herbicide resistance was more competitive toward winter wheat than the susceptible one. The wheat CR < 1 with regard to biomass and both biomass and the grain number was in 64% and 50% of all the combinations with the resistant biotype. In conclusion, weather affects the competitive effects of winter wheat toward herbicide-susceptible or resistant bentgrass.

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Section: Introductionmentioning

confidence: 99%

Environmental Factors Effects on Winter Wheat Competition with Herbicide-Resistant or Susceptible Silky Bentgrass (Apera spica-venti L.) in Poland

et al. 2021

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“…Loose silky bentgrass [ Apera spica-venti (L.) Beauv.] is one of the most serious grass weed in Northern, Eastern and Central Europe ( Hamouzová et al, 2011 ; Massa and Gerhards, 2011 ; Schulz et al, 2011 ). At a density of 200 plants m -2 , A. spica-venti reduces the yield of winter cereals up to 30%, and it can cause greater yield losses than Alopecurus myosuroides ( Melander, 1995 ; Melander et al, 2008 ).…”

Section: Introductionmentioning

confidence: 99%

Fitness of ALS-Inhibitors Herbicide Resistant Population of Loose Silky Bentgrass (Apera spica-venti)

et al. 2017

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Herbicide resistance is an example of plant evolution caused by an increased reliance on herbicides with few sites of action to manage weed populations. This micro-evolutionary process depends on fitness, therefore the assessment of fitness differences between susceptible and resistant populations are pivotal to establish management strategies. Loose silky bentgrass (Apera spica-venti) is a serious weed in Eastern, Northern, and Central Europe with an increasing number of herbicide resistant populations. This study examined the fitness and growth characteristics of an ALS resistant biotype. Fitness and growth characteristics were estimated by comparing seed germination, biomass, seed yield and time to key growth stages at four crop densities of winter wheat (0, 48, 96, and 192 plants m-2) in a target-neighborhood design. The resistant population germinated 9–20 growing degree days (GDD) earlier than the susceptible population at 10, 16, and 22°C. No differences were observed between resistant and susceptible populations in tiller number, biomass, time to stem elongation, time to first visible inflorescence and seed production. The resistant population reached the inflorescence emergence and flowering stages in less time by 383 and 196 GDD, respectively, at a crop density of 96 winter wheat plants m-2 with no differences registered at other densities. This study did not observe a fitness cost to herbicide resistance, as often hypothesized. Inversely, a correlation between non-target site resistance (NTSR), earlier germination and earlier flowering time which could be interpreted as fitness benefits as these plant characteristics could be exploited by modifying the timing and site of action of herbicide application to better control ALS NTSR populations of A. spica-venti.

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“…(silky bent grass) is the most prevalent grass weed of winter cereals in the Czech Republic. In 2005, silky bent grass biotypes that were putatively resistant to multiple herbicides were found in winter wheat fields throughout the Czech Republic and later confirmed to be resistant . The long‐term use of chlorsulfuron and the reliance on active ingredients that have the same mechanism of action contributes to the occurrence of resistance.…”

Section: Introductionmentioning

confidence: 99%

Mechanisms of resistance to acetolactate synthase‐inhibiting herbicides in populations of Apera spica‐venti from the Czech Republic

Hamouzová

Košnarová

Salava

et al. 2013

Pest Management Science

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Weed Resistance to Herbicides in the Czech Republic: History, Occurrence, Detection and Management

Cited by 5 publications

References 51 publications

Environmental Factors Effects on Winter Wheat Competition with Herbicide-Resistant or Susceptible Silky Bentgrass (Apera spica-venti L.) in Poland

Environmental Factors Effects on Winter Wheat Competition with Herbicide-Resistant or Susceptible Silky Bentgrass (Apera spica-venti L.) in Poland

Fitness of ALS-Inhibitors Herbicide Resistant Population of Loose Silky Bentgrass (Apera spica-venti)

Mechanisms of resistance to acetolactate synthase‐inhibiting herbicides in populations of Apera spica‐venti from the Czech Republic

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