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Control of foliar diseases in barley: towards an integrated approach

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Abstract

Barley is one of the world’s most important crops providing food and related products for millions of people. Diseases continue to pose a serious threat to barley production, despite the use of fungicides and resistant varieties, highlighting the impact of fungicide resistance and the breakdown of host plant resistance on the efficacy of control measures. This paper reviews progress towards an integrated approach for disease management in barley in which new methods may be combined with existing measures to improve the efficacy of control in the long-term. Advances have been made in genetic mapping of resistance (R) genes and in identifying novel sources of genes in wild barley populations and land races. Marker assisted selection techniques are being used to pyramid R genes to increase the durability of resistance. Elicitors to induce host resistance used in combination with fungicides can provide effective disease control in the field and could delay the evolution of fungicide insensitivity. Traits that may contribute to disease tolerance and escape have been identified and the extent of genetic variation within barley germplasm is being determined. Tools are being developed to integrate the above methods via an assessment of the risk of economic injury occurring from disease to guide decisions on the requirement for fungicide treatment. Barriers exist to the adoption of integrated management approaches from growers and end-users further down the supply chain (e.g. acceptance of variety mixtures) and policy incentives from government may be required for it to be taken up in practice.

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Acknowledgements

Some of the work at SAC and JHI described in this paper was conducted as part of the Scottish Government-funded 'Sustainable Agriculture - Plants' programme on barley pathology (WP1.4).

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Authors and Affiliations

  1. Crop and Soil Systems Research Group, Scottish Agricultural College, West Mains Road, Edinburgh, EH9 3JG, UK

    Dale R. Walters, Ian J. Bingham, Fiona J. Burnett, James Fountaine, Neil D. Havis, Stephen P. Hoad & Gareth Hughes

  2. Land Economy and Environment Research Group, Scottish Agricultural College, West Mains Road, Edinburgh, EH9 3JG, UK

    Alan Renwick & Cairistiona F. E. Topp

  3. The James Hutton Institute, Invergowrie, Dundee, DD2 5DA, UK

    Anna Avrova, Mark Looseley & Adrian C. Newton

  4. Home-Grown Cereals Authority, Stoneleigh Park, Kenilworth, Warwickshire, CV8 2TL, UK

    Simon J. P. Oxley

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Walters, D.R., Avrova, A., Bingham, I.J. et al. Control of foliar diseases in barley: towards an integrated approach. Eur J Plant Pathol 133, 33–73 (2012). https://doi.org/10.1007/s10658-012-9948-x

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