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barley powdery mildew

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Catalogue: GRDC Updates (West)
Mention of a trade name or company in this publication does not imply endorsement of any product or company by the Department of Agriculture and Food, Western Australia... Overall, 60-70 per cent of flour is used in traditional flat breads, 20-25 per cent of flour is used in western style breads and 5-10 per cent is used in cakes and biscuits... In summary, canola varieties sown 2-3 weeks earlier than normal (early to mid April) can be grazed in winter prior to bud elongation (usually providing 600-800 dse grazing days/ha) and recover with no impact on yield or oil...
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Catalogue: GRDC Research Summaries
An agronomic research program that can enhance the release of new barley varieties for Western Australia... In the study we aim to quantify the benefit of the current Alt gene and undertake a 'proof of concept' study to see if the inclusion of this Alt gene in future releases might influence the way in which we grow barley... Preliminary results indicate grazing control..
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Catalogue: GRDC Factsheets
Key poinTs A single gene mutation in populations of the powdery mildew pathogen has caused disease control failure by some triazole fungicides... P H O T O : K i T H S i r i J A y A S e n A Use integrated disease management to reduce disease pressure and reliance on fungicides... Apply effective fungicides as soon as the disease becomes apparent; early control is essential to maximise fungicide efficacy...
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Catalogue: GRDC Media
Help available in fight against barley powdery mildew in WA.. This is a key message outlined in a new Grains Research and Development Corporation (GRDC) resource aimed at helping Western Australian growers minimise losses from powdery mildew in barley in 2012... CAPTION: Barley powdery mildew is a damaging fungal disease caused by Blumeria graminis f. sp hordei (BGH), which is specific to barley and barley grass...
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Catalogue: GRDC Final Reports
Fungicide use in the Australian grains industry has risen significantly in the past decade... A sufficient level of genetic resistance needs to be maintained, particularly in crops attacked by medium and high risk pathogens where the diversity of fungicides available is low... The chemical industry is being encouraged to introduce one or more of the eight modes of action that control mildew overseas or on grapes in Australia...
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Catalogue: GRDC Media
Preliminary results from a Grains Research and Development Corporation (GRDC) supported trial at Gibson showed crop 'grazing' significantly reduced levels of the disease in barley, compared with ungrazed crops... DAFWA researcher Andrea Hills said that in July, more than 5 per cent of the lower leaves of ungrazed Baudin barley in the trial were infected by powdery mildew - the level at which the crop would normally be sprayed with fungicide... Ms Hills said the primary aim of the trial was to find out if growers could avoid having to apply an early fungicide spray by grazing their crops...
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Catalogue: Ground Cover
The increasing prevalence of barley powdery mildew is being seen as a warning to growers, breeders and chemical companies to change their ways or face potential resistance issues... "Barley powdery mildew costs growers in WA about $39 million a year in lost yield, particularly in the medium to high-rainfall zones, which experience high humidity," Professor Oliver says... Using genetic testing, Professor Oliver's team has found mutations in the barley powdery mildew collected over the past three years that make it resistant to fungicides, including tebuconazole and propiconazole - the active ingredients in Folicur and Tilt respectively...
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Catalogue: GRDC Media
Fran Lopez-Ruiz, Fungicide Resistance Group leader of the co-funded Grains Research and Development Corporation (GRDC) and Curtin University centre, also said the difficulties experienced by growers in controlling the disease were unlikely to be the result of fungicide resistance at this time... "The methodologies developed by our research group allow us to stay on top of any fungicide resistant disease populations and help growers act quickly before a disease can get out of hand," Dr Lopez-Ruiz said... "Growers need to be mindful of how they use fungicides, and stick to integrated disease management strategies that do not depend solely on fungicides...
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Catalogue: GRDC Media
Fran Lopez-Ruiz, Fungicide Resistance Group leader of the co-funded Grains Research and Development Corporation (GRDC) and Curtin University centre, also said the difficulties experienced by growers in controlling the disease were unlikely to be the result of fungicide resistance at this time... "The methodologies developed by our research group allow us to stay on top of any fungicide resistant disease populations and help growers act quickly before a disease can get out of hand," Dr Lopez-Ruiz said... "Growers need to be mindful of how they use fungicides, and stick to integrated disease management strategies that do not depend solely on fungicides...
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Catalogue: GRDC Media
Growers who observe powdery mildew on barley varieties rated 'resistant' are urged to contact the Centre for Crop and Disease Management (CCDM) at Curtin University to arrange to send samples for analysis... Barley powdery mildew is one of Western Australia's major cereal diseases and in recent years has developed resistance to older triazole (DMI) fungicides and evolved virulence on barley varieties with levels of resistance... "We hope to introduce similar genes into a larger range of varieties, increasing the choice of resistant varieties available to growers and ensuring robust resistance to powdery mildew," he said...
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