Ground Cover Supplement : GC Supplement - Foliar fungal diseases
GROUND COVER FOLIAR FUNGAL DISEASES 2 MANAGE DISEASE ON THREE FRONTS Cover photo: The GRDC invests more than $10 million annually in research and extension projects on tackling foliar fungal disease, including developing sunflower varieties with durable resistance to rust. Ground Cover is brought to you by growers and the Australian Government through the publisher, the Grains Research and Development Corporation, www.grdc.com.au Executive Editor: Ms Maureen Cribb, Publications Manager, GRDC, 02 6166 4500 PO Box 5367, Kingston ACT 2604 Managing Editor: Brad Collis, Coretext, 03 9670 1168, fax 03 9670 1127 Editor : Emma Leonard, 08 8834 1233 © All material published in Ground Cover supplements is copyright protected and may not be reproduced in any form without written permission from the GRDC. Design and production : Tim Claeys, Creative Director, Coretext, www.coretext.com.au Advertising sales: Hyde Media, 03 9870 4161, fax 03 9870 4163 Registered by Australia Post Publication No. NAD 3994 Disclaimer : Any recommendations, suggestions or opinions contained in this publication do not necessarily represent the policy or views of the Grains Research and Development Corporation. No person should act on the basis of the contents of this publication without first obtaining specific, independent professional advice. The Corporation and contributors to this Ground Cover foliar fungal diseases supplement may identify products by proprietary or trade names to help readers identify particular types of products. We do not endorse or recommend the products of any manufacturer referred to. Other products may perform as well as or better than those specifically referred to. The Grains Research and Development Corporation will not be liable for any loss, damage, cost or expense incurred or arising by reason of any person using or relying on the information in this publication. ARTICLES AND PHOTOGRAPHS BY EMMA LEONARD, UNLESS OTHERWISE STATED More information: Dr Rohan Rainbow, 02 6166 4500, email@example.com Foliar fungal diseases are considered to be any disease that attacks the green plant material from the seedling stage right through to maturity. In this Ground Cover supplement we look at a range of GRDC initiatives, across cereal, pulse and oilseed crops, that aim to improve the industry's ability to monitor and manage foliar fungal diseases. The GRDC invests more than $10 million a year in research and extension projects that relate to the three core strategies for tackling these diseases: nsourcing resistant plant material and breeding varieties with improved resistance; ndeveloping cultural practices to help minimise disease risk; and nfungicide management strategies for disease control. This three-pronged strategy vital for sustainable disease control to be achieved and it must be rigorously applied on-farm. We have seen from overseas experience that over-reliance on fungicides in preference to varieties with high levels of disease resistance has led to the development of fungicide resistance. To assess the potential of fungicide resistance developing in Australia, the GRDC recently commissioned a Fungicide Resistance Strategy by leading British researcher Dr Derek Hollomon. Minimising disease risk by the use of more resistant varieties not only helps to reduce the loss of potential yield, but reduces the number of spores that, for rust, has been shown to reduce the number of mutant rust isolates. It is these new forms of rust or other diseases that are able to overcome resistant genes. Monitoring to identify these new disease threats and resistance breakdowns is essential in developing varieties with improved resistance. To ensure both national and international disease threats and potential sources of resistance are identified, the GRDC invests in a number of projects. New virulent exotic rust pathogens such as Ug99 are a significant biosecurity threat to Australian grain production. Nationally, the GRDC is a core participant in the Cooperative Research Centre for National Plant Biosecurity (CRC Plant Biosecurity) and an associate member of Plant Health Australia. Internationally, the GRDC collaborates with the important plant- breeding centres -- the International Centre for Agricultural Research in the Dry Areas (ICARDA) and the International Maize and Wheat Improvement Center (CIMMYT). Collectively these agencies support the Global Rust Initiative that facilitates a collaborative approach to rust pathogen surveillance, monitoring and early warning to improve the speed of response to potential and actual incursions. Dr Rohan Rainbow, Manager Crop Protection, GRDC INTRODUCTION STANDARD DISEASE RATINGS Rating Abbreviation Resistant R Resistant -- Moderately Resistant R-MR Moderately Resistant MR Moderately Resistant -- Moderately Susceptible MR-MS Moderately Susceptible MS Moderately Susceptible -- Susceptible MS-S Susceptible S Susceptible -- Very Susceptible S-VS Very Susceptible VS CAUTION: RESEARCH ON UNREGISTERED PESTICIDE USE Any research with unregistered pesticides or of unregistered products reported in this document does not constitute a recommendation for that particular use by the authors or the authors' organisations. All pesticide applications must accord with the currently registered label for that particular pesticide, crop, pest and region.
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