Controlling Ramularia leaf spot post chlorothalonil

Neil Havis, Kalina Gorniak, Maria Stanisz-Migal, Henry E. Creissen, Fiona Burnett

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Ramularia leaf spot is major pathogen of barley crops across the temperate regions of the world, reducing yield and quality in grain. The disease is caused by the fungus Ramularia collo-cygni. Research into the development of robust varietal resistance is only just underway and control relies heavily on the use of fungicides. Recently, resistance to the major fungicide groups used in barley has appeared and control relied heavily on the use of the multisite fungicide chlorothalonil. However, this product has lost its approval in the EU and will cease to be an option after May 2020. This paper describes some initial work looking at alternatives to chlorothalonil in a barley disease control programme.
Original languageEnglish
Title of host publicationProceedings Crop Production in Northern Britain 2020
Number of pages6
Publication statusPublished - 25 Feb 2020


  • Ramularia leaf spot
  • chlorothalonil
  • fungicide
  • crop disease


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