EWRS Herbicide Resistance Working Group



Herbicide Resistance in Europe: Challenges, Opportunities and Threats.
The Lindner Congress Hotel, Höchst, Frankfurt, Germany
19th – 20th May 2014.


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Session 1: Reporting resistance: resistance in major European weeds

  1. Herbicide resistance in Conyza spp. In Europe – distribution and mechanisms (Baruch Rubin, Israel)
  2. Corn poppy herbicide resistance: a European issue (Nikolaos Kalomenos, UK)
  3. Current status of herbicide resistance in Alopecurus myosuroides in Europe (Jan Petersen, Germany)
  4. Resistance status of Silky bent grass (Apera spica-venti) in Europe (Josef Soukup, Czech Republic)
  5. Lolium spp. resistance to herbicides in Europe: a challenge (Fidel González-Torralva, Spain)
  6. Echinochloa spp: herbicide resistance in a polyploid species (Silvia Panozzo, Italy)
  7. International survey of herbicide resistant weeds – Herbicide resistant weeds in Europe (Ian Heap, USA)
  8. Herbicide resistance mapping in the EU northern zone (Solvejg Mathiassen, Denmark)
  9. WeedMap -  a geodatabase for recording of data on weed resistance (Kateřina Hamouzová, Czech Republic)
  10. An interactive web-based application for weed resistance mapping (Maurizio Sattin, Italy)
  11. Weeds to watch in relation to herbicide resistance (Hansjoerg Kraehmer, Germany)

Session 2: Mechanisms of non-target site herbicide resistance

  1. Metabolism-based diclofop resistance in Lolium rigidum: using RNA-Seq transcriptome analysis to identify resistance-endowing genes (Todd Gaines, USA)
  2. A molecular basis for multiple herbicide resistance in black-grass (Robert Edwards, UK)
  3. Glyphosate resistant Giant ragweed (Ambrosia trifida) and the rapid necrosis response (Christopher Van Horn, USA)
  4. Exploring the evolution of herbicide resistance mechanisms in grass weeds using BrIFAR: A comprehensive resource for functional characterization (Maor Matzrafi, Israel)
  5. Non target-site based resistance in Conyza bonariensis (Ziv Kleinmann, Israel)
  6. Characterization of rye-grass (Lolium spp.) transcriptome-wide response to ALS-inhibiting herbicides (Arnaud Duhoux, France)

Session 3: Ecological and evolutionary principles in resistance management (Chair: Paul Neve)

  1. Towards a cohesive understanding of glyphosate resistance evolution (Regina Baucom, USA)
  2. To resistance mechanisms …. and beyond: an evolutionary approach to herbicide resistance (Christophe Délye, France)
  3. Improving the design of spray trials to estimate species propensity to evolve herbicide resistance (Henri Darmency, France)
  4. Evolutionary dynamics of metabolic resistance against ALS herbicides (Otto Richter, Germany)
  5. Chlamydomonas reinhartdii: a model organism for exploring the evolution and management of herbicide resistance? (Paul Neve, UK)
  6. Investigating the potential for glyphosate resistance in UK Alopecurus myosuroides populations (Laura Davies, UK)

Session 4: Resistance management and its adoption

  1. Considering the socio-economics of resistance management decisions. (Rick Llewellyn, Australia)
  2. Can we better quantify the risks of herbicide resistance in order to improve the adoption of management strategies? (Stephen Moss, UK)
  3. Farmer’s and adviser’s perceptions of herbicide resistance management (Jens Erik Jensen, Denmark)
  4. Adapting cropping systems to delay herbicide resistance: A simulation study (Henri Darmency, France)
  5. Interactions between herbicide mixtures and Apera spica-venti biotypes and their influence on herbicide efficacy (Arne Brathuhn, Germany)
  6. Diversified weed management for glyphosate resistant biotypes in Europe (Jaime Costa, Spain)


Poster presentations

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Session 1: Reporting resistance: resistance in major European weeds

Resistance of Apera-spica venti in Lithuania (Ona Auškalnienė, Lithuania)

Natural tolerance and resistance to glyphosate in grass weeds: a case of study (Pablo Fernández, Spain)

Is resistance to residual herbicides increasing in Alopecurus myosuroides (black-grass) populations? (Richard Hull, UK)

Papaver rhoeas plants with multiple resistance to synthetic auxins and ALS inhibitors (Vaya Kati, Greece)

Establishing the extent of ACCase and ALS herbicide resistance mechanisms in UK populations of  black-grass (Craig Knight, UK)

Weed Resistance description from control complaints (JM Montull, Spain)

Studies of weed resistance to herbicides in Serbia (Danijela Pavlovic, Serbia)

Cross resistance to ALS-inhibiting herbicides in Sorghum halepense (Antonia Rojano, Spain)

Development of an assay to identify pre-emergence herbicide resistance in Alopecurus myosuroides grass populations (Maria Rosenhauer, Germany)

Herbicide resistance in Switzerland (Fred Tschuy, Switzerland)

Influence of long-term herbicide use on weed shifts in maize under different methods of soil tillage in Ukraine (Victor Zadorozhyyi, Ukraine)

Session 2: Mechanisms of non-target site herbicide resistance

Next-Generation Sequencing (NGS) application to the detection of mutations endowing herbicide resistance (Délye, France)

Transcriptomic analysis of metabolic resistance in two F2-blackgrass populations segregating for resistance to ALS- and ACCase-inhibitors (Michael Höfer, Germany)

Molecular diagnostics for herbicide resistance in Alopecurus myosuroides (Black-grass) (Rebecca Stafford, UK)

Session 3: Ecological and evolutionary principles in resistance management (Chair: Paul Neve)

Germination and dormancy of susceptible and non-target site resistant black-grass phenotypes (Eshagh Keshtkar, Denmark)

Session 4

Management of Lolium perenne resistant to glyphosate (Isabel Calha, Portugal)

Effective management of ALS-resistant broad-leaved weeds in a cereal/oilseed rape cropping rotation in the UK (Lynn Tatnell, UK)