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soil borne pathogen

Catalogue: GRDC Media
Grain growers across New South Wales and Queensland are being reminded to follow updated sampling techniques when assessing the risk of disease threats including crown rot and root lesion nematodes... Crown rot is caused by the fungus Fusarium pseudograminearum and is one of the most serious disease threats to winter cereal crops in Australia... DNA-based soil test PreDicta B is recognised as a reliable technique for identifying the level of risk for crown rot, and other soil-borne pathogens within paddocks prior to sowing...
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Catalogue: GRDC Media
Grain growers across New South Wales and Queensland are being reminded to follow updated sampling techniques when assessing the risk of disease threats including crown rot and root lesion nematodes... Crown rot is caused by the fungus Fusarium pseudograminearum and is one of the most serious disease threats to winter cereal crops in Australia... DNA-based soil test PreDicta B is recognised as a reliable technique for identifying the level of risk for crown rot, and other soil-borne pathogens within paddocks prior to sowing...
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Catalogue: GRDC Updates
Over the three survey years this allowed 307 comparisons of Fusarium DNA levels assessed at sowing using PreDicta B with the actual incidence of infection that developed by harvest as determined from laboratory plating (Table 1)... The predicted risk of crown rot development at sowing using PreDicta B was within one category of the actual level of infection measured after harvest in 121 paddocks (39%, light grey shading)... In other regions a shallower sampling depth (0-10 cm or 0-15 cm) is recommended with PreDicta B. In 2013 we aimed to determine if this deeper sampling depth in the northern region, to account for RLN populations deeper in the soil profile, is potentially compromising the accuracy of PreDicta B to measure levels of other soil-borne pathogens including Fusarium ...
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Catalogue: GRDC Media
Current research is helping boost the accuracy of the PreDicta B test in assessing crown rot risk by fine tuning soil sampling techniques and recommendations... PreDicta B is a good technique for identifying the level of risk for crown rot and other soil-borne pathogens prior to sowing within paddocks but requires a dedicated sampling strategy and is not a simple add on to a soil nutrition test... There is no detection issue with the current PreDicta B tests that were resulting in an underestimation of crown rot risk...
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Catalogue: GRDC Media
Research delivers gains in crown rot risk management.. PreDicta B is a good technique for identifying the level of risk for crown rot and other soil-borne pathogens prior to sowing within paddocks but requires a dedicated sampling strategy and is not a simple add on to a soil nutrition test... There is no detection issue with the current PreDicta B tests that were resulting in an underestimation of crown rot risk...
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Catalogue: GRDC Media
He added that the use of the DNA based soil testing services prior to sowing was showing potential in identifying crown rot in the northern region, but required a stringent sampling strategy... "In recent years, use of the DNA based soil testing service PreDicta B has proved a reliable indicator of nematode populations but question marks have been raised by industry over its accuracy in assessing crown rot risk within the northern region," Dr Simpfendorfer said... "PreDicta B is a good technique for identifying the level of risk for crown rot and other soil-borne pathogens prior to sowing within paddocks but requires a dedicated sampling strategy and is not a simple add-on to a soil nutrition test...
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Catalogue: GRDC Media
Soil monitoring important following fire.. Soils affected by fire can have their microbial buffer against diseases weakened... While some plant pathogens may be reduced following extreme fire events such as the Pinery fire in South Australia's lower north region last year, growers affected by fire are being urged to monitor nutrient levels and soilborne disease pathogens in the lead-up to and during the 2016 growing season...
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Catalogue: GRDC Media
Soil monitoring important following fire.. Soils affected by fire can have their microbial buffer against diseases weakened... While some plant pathogens may be reduced following extreme fire events such as the Pinery fire in South Australia's lower north region last year, growers affected by fire are being urged to monitor nutrient levels and soilborne disease pathogens in the lead-up to and during the 2016 growing season...
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Catalogue: GRDC Media
Stringent sampling needed to assess crown rot risk.. "In recent years, use of the DNA based soil testing service PreDicta B has proved a reliable indicator of nematode populations but question marks have been raised by industry over its accuracy in assessing crown rot risk within the northern region," Dr Simpfendorfer said... "PreDicta B is a good technique for identifying the level of risk for crown rot and other soil-borne pathogens prior to sowing within paddocks but requires a dedicated sampling strategy and is not a simple add-on to a soil nutrition test...
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Catalogue: Ground Cover
Genetic resources screened for disease resistance.. An international program to improve resistance to root diseases has developed close collaborative links with Australian durum and wheat researchers and breeders.. A key figure in the global search for better resistance to wheat root diseases has a longstanding relationship with Australia through the GRDC. Dr Amer Dababat* discusses the breadth of that partnership and implications for growers..
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