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barley stubble

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Catalogue: GRDC Updates
Net blotches (Pyrenophora teres f. teres and P.t. f. maculata) remain the major diseases of barley in the northern region... While net form net blotch (P.t. f. teres) can be the more devastating disease, resistance to the disease is present in several of our leading varieties... Seed harvested from crops heavily infected with net form net blotch should not be retained for sowing...
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Catalogue: GRDC Media
Resistance finding puts spotlight on barley fungicide tactics for 2015.. NTNB samples that are showing resistance to triazole fungicides at the CCDM centre came from WA and growers and advisers across all of the State's rainfall zones are urged to watch closely for signs of resistance this season... Further research is needed to better determine the extent of this new issue...
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Catalogue: GRDC Media
Resistance finding puts spotlight on barley fungicide tactics for 2015.. NTNB samples that are showing resistance to triazole fungicides at the CCDM centre came from WA and growers and advisers across all of the State's rainfall zones are urged to watch closely for signs of resistance this season... Further research is needed to better determine the extent of this new issue...
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Catalogue: GRDC Media
Net blotch is expected to be at damaging levels in Western Australian barley crops this year, particularly in high rainfall areas, but growers can reduce the risks by adopting an integrated disease management approach... "There is a high risk of damage to 2014 barley crops due to carry-over of the disease from last year, heavy stubble loads and warm conditions forecast for coming months," he said... "Both forms of net blotch have become more prevalent in WA in recent years and were damaging last season, particularly in south coastal regions."..
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Catalogue: GRDC Media
Net blotch is expected to be at damaging levels in Western Australian barley crops this year, particularly in high rainfall areas, but growers can reduce the risks by adopting an integrated disease management approach... "There is a high risk of damage to 2014 barley crops due to carry-over of the disease from last year, heavy stubble loads and warm conditions forecast for coming months," he said... "Both forms of net blotch have become more prevalent in WA in recent years and were damaging last season, particularly in south coastal regions."..
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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
Growers are urged to carefully plan fungicide management strategies for net blotch in barley crops this season, following the discovery of a population of the disease resistant to commonly used fungicides... Curtin University researchers have discovered a barley net-type net blotch (NTNB) population from Western Australia resistant to the triazole (DMI) fungicide tebuconazole, as well as some other types of triazole fungicides... Dr Lopez-Ruiz said that if a second treatment was required, growers should then use fungicides with a different mode of action such as a prothioconazole, cyproconazole, propiconazole or epoxiconazole product that is registered for NTNB in barley...
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Catalogue: GRDC Media
YELLOW LEAF SPOT RESOURCE: Southern region grain growers are being provided with a useful resource as they endeavour to reduce the incidence of yellow leaf spot... The Grains Research and Development Corporation (GRDC) has developed a new fact sheet, Management to reduce the risk of yellow leaf spot, to support growers in their efforts to combat the disease... Yellow leaf spot does not affect oats or green barley plants, although barley stubbles can host the pathogen and generate inoculum for the following season...
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Catalogue: GRDC Media
Growers are urged to carefully plan fungicide management strategies for net blotch in barley crops this season, following the discovery of a population of the disease resistant to commonly used fungicides... Curtin University researchers have discovered a barley net-type net blotch (NTNB) population from Western Australia resistant to the triazole (DMI) fungicide tebuconazole, as well as some other types of triazole fungicides... Dr Lopez-Ruiz said that if a second treatment was required, growers should then use fungicides with a different mode of action such as a prothioconazole, cyproconazole, propiconazole or epoxiconazole product that is registered for NTNB in barley...
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Catalogue: GRDC Updates
To quantify how rotation length and use of varieties with disease resistance affect the development of net blotch fruiting bodies on barley stubble in the following seasons... In 2009 and 2010, 2nd year (18-22 month old) stubbles of the variety Baudin from the previous year's stubble trials were assessed for disease carryover potential... By comparison, primary NB infection of barley grown on 2nd year stubble is caused mainly by ascospores produced in sexual fruiting bodies...
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