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susceptible wheat variety

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Catalogue: GRDC Updates (West)
Foliar fungicide applications at or prior to first node stage (Z31) can be effective at controlling leaf spot diseases in susceptible wheat varieties under high disease pressure... Necrotic leaf area was determined on top 3 to 4 leaves (on 15 tillers /plot) from all plots at Z15, Z25, Z31, Z39, Z55 (i.e. before each foliar fungicide spray) and Z72, or in the case of opportunistic trials assessed at regular intervals after trial establishment... The in-furrow fungicides tested show promise for leaf spot disease control and in the future they may become an alternative to foliar applications, for the control of early season leaf spot infections...
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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 control the 'green bridge' now and choose disease resistant crop varieties, after wheat stem rust, barley leaf rust and powdery mildew were found in Western Australia's southern cropping regions... Department of Agriculture and Food (DAFWA) researcher Kith Jayasena, whose research is supported by the Grains Research and Development Corporation (GRDC), said the detection of significant amounts of wheat stem rust this year was of particular concern as the disease could cause yield losses of up to 90 per cent in susceptible wheat varieties... " the strategy, when applied in trials in the high yielding environment of Gibson in the Esperance region, provided yields 56 per_cent greater than the unsprayed crop, and economic returns of $399 per hectare - compared with $83/ha from a single fungicide application at the first sign of the disease, and $111/ha for a single spray three weeks after the disease becomes evident," he said...
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Catalogue: Ground Cover
The wild, ancient ancestors of wheat are a vital key to solving the problem of root lesion nematodes in Australia, researchers now believe... Northern growers currently have no commercial wheat varieties that resist the ravages of RLN, and the massive yield losses they experience each year are of great concern to the industry... Since there are no available commercial wheat varieties with resistance to RLN, choosing varieties that are tolerant, such as EGA Gregory , is a good first step in managing their populations (see the 2014 Queensland Wheat Varieties Guide )...
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Catalogue: GRDC Media
Resource to help growers manage yellow spot.. Help is available for Western Australian wheat growers looking to reduce the risk of yield losses caused by yellow spot, which is currently affecting some of the State's crops... "Fungicides can provide up to three weeks of protection against yellow spot but the economics of fungicide control will depend on the timing of disease development and if moist conditions persist in spring," he said...
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Catalogue: Ground Cover
Genome sequencing of the pathogen that causes the wheat disease tan or yellow spot is expected to accelerate the release of more resistant varieties and improve resistance ratings for existing cultivars... The director of the Perth-based Australian Centre for Necrotrophic Fungal Pathogens (ACNFP), Professor Richard Oliver, says estimates that the disease causes annual losses of more than $200 million in Australian cropping might be conservative... Leader of tan spot research at ACNFP Dr Caroline Moffat says the new genome sequence means her team can focus on finding sequences for Australian isolates of the disease and genetic analysis of Australian wheat varieties...
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Catalogue: GRDC Media
Grain producers have been urged to give stripe rust a greater priority when selecting triticale varieties following the discovery of a new strain of the airborne fungus... The varieties Jackie, Breakwell, Speedee, Abacus, Prime 322, Kosciuszko, Hillary and Madonna are all vulnerable to the new pathotype," Dr Wellings said. ".. The strain was first found on a sample of Jackie triticale at Bingara, near Moree in northern NSW. "It was the first rust sample I received for the season and it took a while for us to determine it was a new strain," he said...
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Catalogue: GRDC Media
Grain producers have been urged to give stripe rust a greater priority when selecting triticale varieties following the discovery of a new strain of the airborne fungus... The varieties Jackie, Breakwell, Speedee, Abacus, Prime 322, Kosciuszko, Hillary and Madonna are all vulnerable to the new pathotype," Dr Wellings said. ".. The strain was first found on a sample of Jackie triticale at Bingara, near Moree in northern NSW. "It was the first rust sample I received for the season and it took a while for us to determine it was a new strain," he said...
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Catalogue: GRDC Media
Growers need strategy to manage yellow leaf spot.. If the infection is left untreated, a susceptible wheat variety may measure yield losses of up to 65 per cent, Mr Platz said... Fungicide success will be directly related to application number and timeliness, Mr Platz said, with maximum yield and quality benefits obtained by keeping the upper leaves free from disease during grain fill. "..
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Catalogue: GRDC Media
Growers need strategy to manage yellow leaf spot.. If the infection is left untreated, a susceptible wheat variety may measure yield losses of up to 65 per cent, Mr Platz said... Fungicide success will be directly related to application number and timeliness, Mr Platz said, with maximum yield and quality benefits obtained by keeping the upper leaves free from disease during grain fill. "..
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