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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 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
Figure 1: Area sown to barley in SA (hectares - solid line) and state barley production (tonnes - dotted line)... Other varieties currently under earlier stages of evaluation for malting accreditation by the MBIBTC and Barley Australia include Grange, Henley, Skipper, SY Rattler, Wimmera and Westminster... Only data for varieties evaluated in all trials is included...
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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 Media
Crop health tool addresses new seasonal challenges.. PestFax- a vital link in the fight to maintain Western Australia's current levels of crop health - has resumed its free weekly service, as the new season presents a fresh set of pest and disease challenges... PestFax is widely read and supported by grains industry leaders including agronomists, consultants, farmers, researchers, grain marketers and retailers, with issues delivered to subscribers each Friday via email and available at www.agric.wa.gov.au/pestfax "The service helps the grains industry keep up with seasonal challenges and advises on management options relating to recurring pest and disease threats," PestFax editor and DAFWA entomologist Peter Mangano said...
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Catalogue: GRDC Updates
Minimise risk of virus by retaining stubble, planting on time and at optimal rate, controlling weeds and ensuring adequate plant nutrition.. These results and a recent report of a closely related polerovirus from Tasmania suggest that it has a very wide geographical range... Soil tests in one 2012 salt affected crop of PBA HatTrick south of Walgett showed chloride levels of 1,770 mg/kg (1:5 H2O) and EC se of 9.8 dS/m at 15-60cm...
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Catalogue: GRDC Updates
Minimise risk of virus by retaining stubble, planting on time and at optimal rate, controlling weeds and ensuring adequate plant nutrition.. These results and a recent report of a closely related polerovirus from Tasmania suggest that it has a very wide geographical range... Soil tests in one 2012 salt affected crop of PBA HatTrick south of Walgett showed chloride levels of 1,770 mg/kg (1:5 H2O) and EC se of 9.8 dS/m at 15-60cm...
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Catalogue: GRDC Updates
Minimise risk of virus by retaining stubble, planting on time and at optimal rate, controlling weeds and ensuring adequate plant nutrition.. These results and a recent report of a closely related polerovirus from Tasmania suggest that it has a very wide geographical range... Soil tests in one 2012 salt affected crop of PBA HatTrick south of Walgett showed chloride levels of 1,770 mg/kg (1:5 H2O) and EC se of 9.8 dS/m at 15-60cm...
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