EWRS webinar series 2021 Part 4: Herbicide resistance in Europe: management and molecular approaches

Presentations by Dr. Stephen Moss, Stephen Moss Consulting, UK and Dr. Deepak Kaundun, Syngenta, UK

online webinar 14.00 - 15.30 CET, 24th of March 2021

EWRS webinar series 2021

This year, a group of EWRS members got together to develop a webinar series covering a wide range of innovative topics that are of interest to everyone involved in weed science and management. Join our webinars to follow a stimulating discussion about the latest research tools and management practices for sustainable weed management. You can download the full programme HERE.

Please subscribe here to receive the webinar link by email from "newsletter@ewrs.org" a few days before the webinar (registration deadline is 11 am on 24th of March 2021). You will receive a first confirmation email for your successful registration and in the following, on the latest between 11 and 12 am CET on the day of the webinar, you will receive the mail with the link for the Zoom webinar. Please whitelist this e-mail-address if you are not a regular receiver of the newsletter.

If you do not receive the email with the link to the webinar by 12.00 on Wednesday 24th March, please contact us directly: newsletter@ewrs.org.

The presentations:

Dr. Stephen Moss, Stephen Moss Consulting, UK, on March 24th introduces on: "Herbicide resistance: does the practice differ from the theory?" and Dr. Deepak Kaudun, Syngenta, UK will present: "DNA and OMICS technologies in herbicide resistance research"


Dr Stephen Moss - Stephen Moss Consulting, UK: 

Herbicide resistance: does the practice differ from the theory? 

Short CV

Retired from Rothamsted Research in 2015 and now operates independently. His research includes the agro-ecology of grass-weeds, factors affecting herbicide performance, herbicide resistance and IWM strategies.  Has published over 250 research papers, book chapters and technical reports, contributed to over 350 articles in the popular farming press and given hundreds of talks, demonstrating the importance he attaches to active knowledge transfer. 




Herbicide resistance has evolved in 263 weed species in 71 countries (weedscience.org). Theoretical concepts considered important in resistance evolution include: the background incidence of resistance; characteristics of affected species and herbicides; and fitness and dose rate studies. The presentation will question their value in practice and suggest novel studies and approaches aimed at improving practical resistance prevention and management.  



Dr. Deepak Kaudun - Syngenta: 

DNA and OMICS technologies in herbicide resistance research.

Short CV

Deepak Kaundun is a Syngenta Fellow and has lead herbicide resistance research for the company for the last 16 years. His work includes  (1) development and local implementation of simple assays for the proactive detection of resistance (2) elucidation of resistance mechanisms (3) assessment of resistance-breaking compounds in research and development (4) computer-based modelling of herbicide resistance and (5) dissemination of research results and promotion of good management practices. 


Recent advances in DNA and ‘omics’ technologies have greatly enhanced our understanding of evolved herbicide resistance in weeds. Here we describe their use in the unambiguous confirmation of resistance especially when the resistance level is low, in determining the evolutionary dynamics of resistance, in unravelling complex non-target-site based resistance mechanisms and in assessing the pleiotropic effects associated with resistance traits. We also highlight the challenges posed by the high genetic variability of weed species.