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fungal pathogen

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Catalogue: GRDC Factsheets
The best means for controlling powdery mildew is by avoiding more susceptible wheat and barley varieties... if powdery mildew is allowed to develop in crops, there is a serious risk of fungicide resistance developing as well as loss of resistance in current and future varieties... Spraying needs to be done early with full rates of fungicide...
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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
Monitoring of all Western Australian barley crops for powdery mildew disease and careful fungicidal management including the use of seed dressings will reduce the risk of yield losses this season, with commonly grown varieties found to have an increased susceptibility to the disease... Recent rainfall could favour the development of powdery mildew, which has already been observed in barley regrowth at a number of sites across barley growing regions in WA's central and southern grain growing regions... Photo Caption: GRDC-supported research conducted by the ACNFP has found that commonly grown barley varieties have an increased susceptibility to the disease...
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Catalogue: GRDC Updates
Implications of SFNB infection on barley production in Victoria is not understood as no studies into the epidemiology or control of the disease have been documented since its first detection in the early 1990s... The aim of the study was to establish the importance of SFNB to Victorian barley production and identify control strategies for its management... The study has shown that barley varieties with even partial resistance (seedling resistance) can provide control of SFNB...
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Catalogue: GRDC Media
Powdery mildew survey seeks SA barley grower input South Australian barley growers are being urged to help in the fight against fungicide resistance by participating in a survey assessing resistance in the damaging barley disease, powdery mildew... Australian Research Centre for Necrotrophic Fungal Pathogens (ACNFP) director and GRDC western panel deputy chairman Richard Oliver said the samples would reveal fungicide resistance patterns, and help breeders produce new barley varieties resistant to powdery mildew... Professor Oliver said growers could protect barley crops from powdery mildew and limit the spread of resistant powdery mildew strains by controlling barley volunteers, growing barley varieties resistant to the disease and using effective fungicides. "..
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Catalogue: GRDC Updates
A local trial in 2009 has also shown that nodulation may be reduced where inoculants are applied as a slurry on to fungicide treated seed... In the past, inoculation has usually been done by applying root nodule bacteria in peat slurry to the seed and sowing on the same day... The peat granules had a significant increase in nodulation when seed was treated with fungicide...
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Catalogue: GRDC Updates
In 2013 pod infection was observed in all monitored regions of Victoria... Pod infection will result in seed infection.&nbsp; Infected seeds may die and shrivel and/or cause pod shatter, reducing yield... Even if flower petals are infected, dry conditions or cool wet conditions during petal fall will prevent stem infection development.<strong> <br></strong></li> </ol><h3>Research findings in 2013</h3> <p>In 2013 sclerotinia was observed in all canola producing states it was more severe in North Eastern Victoria, NSW and WA...
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Catalogue: GRDC Media
Western Australian growers are being encouraged to understand foliar fungal diseases of cereals and how to manage them... The Grains Research and Development Corporation (GRDC) has released a western region-specific version of the Cereal Fungicides Fact Sheet, aimed at assisting growers in managing cereal fungicide use... According to GRDC plant health technologies program manager Ken Young, fungicides are just one component of an effective management strategy and do not increase yield; they protect yield potential and cannot retrieve lost yield if applied after infection is established...
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Catalogue: GRDC Research Summaries
" Beneficial Microbes Program - progressing new microbial products for Australian grain production to commercialisation... Australian farmers are keen to reduce on-farm chemical inputs and replace them with biological alternatives... Research has shown that the soil biota can be manipulated for the benefit of crops through management practices, such as tillage, stubble retention/burning, crop/pasture sequencing and liming...
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Catalogue: GRDC Media
" Date: 09.12.2013 'Perfect storm' sparks sclerotinia outbreak in canola crops.. " , crops have flowered very early this year due to the mild winter temperatures and this has contributed to the levels of disease we observed," said Mr Lindbeck, who is based at the Wagga Wagga Agricultural Institute where he leads Grains Research and Development Corporation-funded research on the management of pulse and oilseed diseases in southern NSW... Mr Lindbeck said that in addition to sclerotinia being an airborne disease, the sclerotinia stem rot pathogen produced hard, black, survival bodies on infected plant tissue called sclerotia which enabled the fungus to survive for up to 10 years in the field...
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