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triazole fungicide

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Catalogue: GRDC Media
Watch a video with FAR Australia's Nick Poole... Rust has taken a back seat as the primary disease for wheat in the high rainfall zone (HRZ) of south-eastern Australia with Septoria Tritici Blotch (STB) taking the reins as the biggest headache for growers over the last three seasons... "It has a much longer latent period (time between fungal spores infecting the crop and symptoms appearing), meaning you can't tell whether new tissue is infected since it takes longer for the disease to reveal itself in the crop," Mr Poole said. "..
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Catalogue: GRDC Media
Professor Richard Oliver, from the Grains Research and Development Corporation (GRDC) supported Australian Centre for Necrotrophic Fungal Pathogens (ACNFP), said barley crops in the Esperance region, parts of the Great Southern, Corrigin and as far north as Jurien Bay were affected by powdery mildew... Professor Oliver said growers should use newer fungicides to protect their crops because it appeared that powdery mildew across the entire WA grainbelt had now developed resistance to the older triazole group of fungicides... Professor Oliver said that to minimise the risk of powdery mildew damaging barley crops next season, growers should avoid growing varieties susceptible to the disease, and use recommended newer fungicides...
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Catalogue: GRDC Publications
Influence of fungicide rate (mean of fungicide products - four site mean) Stem rust control assessed over the four trial sites revealed that using high rates was essential for the control of the disease, even if the fungicide had been applied prophylactically (before infection was visible in the crop)... Influence of cultivar resistance and fungicide application (Prosaro ) on yield and stem rust severity measured on the flag sheath 18 days after fungicide application at early dough (GS82) and assessed at mid dough - physiological maturity (GS85-90) - Bairnsdale, Gippsland, Victoria, 2010... The yield potential for the crop with no nitrogen applied is estimated at GS30 from the results of numerous of trials conducted in that region where NDVI at GS30 is divided by the number of growing degree days (GDD) greater than 0 C since planting, referred to as the INSEY units (in season estimate of yield)...
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Catalogue: GRDC Media
Watch a video with FAR Australia's Nick Poole... Rust has taken a back seat as the primary disease for wheat in the high rainfall zone (HRZ) of south-eastern Australia with Septoria Tritici Blotch (STB) taking the reins as the biggest headache for growers over the last three seasons... "It has a much longer latent period (time between fungal spores infecting the crop and symptoms appearing), meaning you can't tell whether new tissue is infected since it takes longer for the disease to reveal itself in the crop," Mr Poole said. "..
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Catalogue: GRDC Media
HRZ growers urged to be prepared for STB threat.. Mr Poole says rusts are a "puppy" compared to STB because fungicides do not achieve the same level of control as seen with stripe rust in Australia, and because the disease has a longer latent period which makes it more difficult to determine its progress... With the STB pathogen becoming resistant to strobilurins and triazoles in other parts of world and with evidence that the pathogen in southern Australia has some of the early stage resistance mutations to triazoles, Mr Poole is urging growers to use an IDM strategy and not base control on fungicides alone...
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Catalogue: GRDC Media
Mr Poole says rusts are a "puppy" compared to STB because fungicides do not achieve the same level of control as seen with stripe rust in Australia, and because the disease has a longer latent period which makes it more difficult to determine its progress... With the STB pathogen becoming resistant to strobilurins and triazoles in other parts of world and with evidence that the pathogen in southern Australia has some of the early stage resistance mutations to triazoles, Mr Poole is urging growers to use an IDM strategy and not base control on fungicides alone... "In looking at fungicide options, bear in mind the recent discovery by Dr Andrew Milgate at New South Wales Department of Primary Industries of strains of the disease that show mutations conferring reduced sensitivity (low level resistance) to a number of triazole fungicides," Mr Poole said...
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Catalogue: GRDC Updates
The value of the extra crop yield attributed to fungicide use is estimated at $1200m for wheat and $2000 for all crops... We suggest that further research is needed to.. Overall, we believe the best way to preserve the value of chemical methods of crop protection is to..
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Catalogue: Ground Cover
HRZ disease needs holistic response.. Cereal disease researchers are calling for a whole-of-industry approach to manage and reduce the impact of Septoria tritici blotch (STB)... Dr Andrew Milgate, a research scientist with the New South Wales Department of Primary Industries (DPI), says STB is a triple threat in that it is able to rapidly overcome host resistance, it has evolving fungicide resistance and its spores can travel long distances...
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Catalogue: Ground Cover
HRZ disease needs holistic response.. Cereal disease researchers are calling for a whole-of-industry approach to manage and reduce the impact of Septoria tritici blotch (STB)... Dr Andrew Milgate, a research scientist with the New South Wales Department of Primary Industries (DPI), says STB is a triple threat in that it is able to rapidly overcome host resistance, it has evolving fungicide resistance and its spores can travel long distances...
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