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white grain

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Catalogue: GRDC Updates
Epidemics of yellow spot develop when susceptible varieties are sown into infected stubble where frequent and extended periods of wet weather prevail at temperatures between 10 and 30 C. Optimum temperatures are between 15 and 25 C... Given that timing is the most important factor in fungicidal control, the onus is on growers and agronomists to monitor crops closely... In 2010, the disease was observed causing a leaf blight in barley and in durum wheat in the field...
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Catalogue: GRDC Research Summaries
The overall objective of this research program is to develop and deliver strategies for management of plant diseases of importance to SA grains industries... The increased frequency of cereals and greater adoption of susceptible cultivars is creating an opportunity for cereal cyst nematode (CCN) to re-emerge as a significant problem in the southern region... Subproject 3 continues existing monitoring and surveillance of new races and pathogen threats; this subproject will link with newly appointed grains biosecurity officer in SA. Subproject 4 focusses on rebuilding a joint capability in the southern region to address key issues in cereal nematology, most critically preventing CCN re-emerging as a significant problem...
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Catalogue: GRDC Research Summaries
The overall objective of this research program is to develop and deliver strategies for management of plant diseases of importance to SA grains industries... The increased frequency of cereals and greater adoption of susceptible cultivars is creating an opportunity for cereal cyst nematode (CCN) to re-emerge as a significant problem in the southern region... Subproject 3 continues existing monitoring and surveillance of new races and pathogen threats; this subproject will link with newly appointed grains biosecurity officer in SA. Subproject 4 focusses on rebuilding a joint capability in the southern region to address key issues in cereal nematology, most critically preventing CCN re-emerging as a significant problem...
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Catalogue: GRDC Media
South Australian Research and Development Institute (SARDI) research scientist, Dr Margaret Evans, says studies into the condition will be enhanced with the assistance of growers who can supply samples of suspected white grain and location details... Dr Evans, whose research into cereal diseases is supported by growers and the Australian Government through the GRDC, said wet conditions over the past two seasons almost promoted the high level of infection... Dr Evans suggests that where infection in paddocks can be identified by plant symptoms, growers should be selective about which areas of crop they harvest to keep loads below minimum threshold levels at receival...
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Catalogue: GRDC Media
South Australian Research and Development Institute (SARDI) research scientist, Dr Margaret Evans, says studies into the condition will be enhanced with the assistance of growers who can supply samples of suspected white grain and location details... Dr Evans, whose research into cereal diseases is supported by growers and the Australian Government through the GRDC, said wet conditions over the past two seasons almost promoted the high level of infection... Dr Evans suggests that where infection in paddocks can be identified by plant symptoms, growers should be selective about which areas of crop they harvest to keep loads below minimum threshold levels at receival...
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Catalogue: GRDC Project Summaries
White grain disorder (WGD) was first recorded in Australia in 1999 in Queensland and since that time has been identified in New South Wales, Victoria, South Australia and Western Australia... The symptoms associated with WGD in wheat in Australia are similar in some respects to those produced by Fusarium head blight (FHB)... It is also expected that grain marketers and importing countries could downgrade or not buy infected grain due to this similarity in the visual symptoms produce by FHB and WGD...
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Catalogue: GRDC Media
WHITE GRAIN ADVICE: Recent wet and humid conditions in South Australia and Victoria could be conducive to the Botryosphaeria fungal disease infecting grain heads and causing white grain formation... Growers in areas where white grain was an issue last year - particularly the Upper North and eastern Eyre Peninsula in SA and parts of Victoria - are advised to keep an eye out for white head formation in their wheat and barley crops and, where detected, determine whether the symptoms have been caused by Botryosphaeria, crown rot or some other factor... It is expected that the disease will only cause problems under humid spring conditions but research funded by the Grains Research and Development Corporation (GRDC) in SA and Queensland will help to identify the conditions required for damage more precisely," said Dr Wallwork, whose research into cereal diseases is supported by growers and the Australian Government through the GRDC. White grain caused by the Botryosphaeria fungus contains no toxins, retains much of its nutritional value and can be safely fed to livestock...
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Catalogue: GRDC Updates
Net form net blotch continues to cause problems in many barley crops... A particular concern with NFNB is the continuing rapid evolution of virulence in this pathogen with Keel, Maritime , Fleet and Oxford showing rapid falls in resistance rating in recent years... Extensive testing of isolates of the fungus taken across SA in recent years has shown that none of the strains tested have combined virulence on Fleet and Maritime so in some areas Maritime may have appeared as quite resistant...
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Catalogue: GRDC Media
WHITE GRAIN ADVICE: Recent wet and humid conditions in South Australia and Victoria could be conducive to the Botryosphaeria fungal disease infecting grain heads and causing white grain formation... Growers in areas where white grain was an issue last year - particularly the Upper North and eastern Eyre Peninsula in SA and parts of Victoria - are advised to keep an eye out for white head formation in their wheat and barley crops and, where detected, determine whether the symptoms have been caused by Botryosphaeria, crown rot or some other factor... It is expected that the disease will only cause problems under humid spring conditions but research funded by the Grains Research and Development Corporation (GRDC) in SA and Queensland will help to identify the conditions required for damage more precisely," said Dr Wallwork, whose research into cereal diseases is supported by growers and the Australian Government through the GRDC. White grain caused by the Botryosphaeria fungus contains no toxins, retains much of its nutritional value and can be safely fed to livestock...
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Catalogue: GRDC Media
WHITE GRAIN ADVICE: Recent wet and humid conditions in South Australia and Victoria could be conducive to the Botryosphaeria fungal disease infecting grain heads and causing white grain formation... Growers in areas where white grain was an issue last year - particularly the Upper North and eastern Eyre Peninsula in SA and parts of Victoria - are advised to keep an eye out for white head formation in their wheat and barley crops and, where detected, determine whether the symptoms have been caused by Botryosphaeria, crown rot or some other factor... It is expected that the disease will only cause problems under humid spring conditions but research funded by the Grains Research and Development Corporation (GRDC) in SA and Queensland will help to identify the conditions required for damage more precisely," said Dr Wallwork, whose research into cereal diseases is supported by growers and the Australian Government through the GRDC. White grain caused by the Botryosphaeria fungus contains no toxins, retains much of its nutritional value and can be safely fed to livestock...
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