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rhizoctonia

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Catalogue: GRDC Media
Researchers are beginning to unravel the behaviour of a complex and damaging crop root disease known as Rhizoctonia, and finding new ways to manage crops to reduce its impact... Grains Research and Development Corporation-funded research, carried out by CSIRO and other research partners, is outlined in a new GRDC fact sheet for the southern and western cropping regions - Management to Minimise Rhizoctonia in Cereals... The fungus can grow and survive in the soil in the absence of a live plant host, the fungus has a wide host range, there are no resistant cereals, and it is strongly influenced by soil and environmental conditions and the seasonal impacts are difficult to forecast," Dr Gupta said...
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Catalogue: Ground Cover
Pythium root rot is often misdiagnosed, but new research is increasing our knowledge of damage caused by the disease and offering new control options.. Now research is showing that Pythium can have a big effect on crop growth through the season, resulting in substantial reductions in productivity, even in the absence of 'damping-off'... Results from three years of field trials with wheat demonstrated that an in-furrow application of the Trichoderma inoculant at seeding resulted in: improved crop emergence; reduced levels of Pythium inoculum and root infection; and increases in yield...
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Catalogue: Ground Cover
Photo of a tablet displaying the new Crop diseases app.. Photo of an iPad displaying the new Crop Diseases app.. The new Crop Diseases app enables agronomists and grain growers to assess disease resistance and crop health by crop type, comparison between varieties, disease symptoms and a description of the disease...
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Catalogue: GRDC YouTube channel
" Over the Fence: Improving soil health helps fight against rhizoctonia - Nov 2011 08 August 2012.. The long-term benefits of modern farming techniques like stubble retention and zero-till are delivering not only increased profits, but also improved soil health and reduced disease damage in cereal crops... Technology to reduce spray drift GCTV: Drift Reducing Technology..
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Catalogue: GRDC Media
SARDI's Dr Alan McKay says take-all is the disease likely to catch growers out... Inoculum levels are the highest in more than a decade and growers and advisers managing intensive cereal or cereal/pasture rotations should plan ahead to avoid yield loss later in the season... "If the paddock must be sown to a cereal, then consider barley because any yield losses will be only half that of wheat's potential losses, but inoculum levels will continue to increase."..
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Catalogue: GRDC Research Summaries
In mixed farming systems grazing of the pasture phase can be used to minimise weed burdens but for continuous croppers, or within the cropping phase of mixed farming, some tillage might be needed for integrated weed management... From an overall systems perspective, limited and strategically timed tillage could form part of a productive, sustainable system... A central question emerges : How much damage is done to soil by occasional tillage, strategically applied, in an otherwise no-till system We seek to investigate this question based on the hypothesis: That the agronomic and economic benefits of a strategic tillage operation exceed any agronomic costs due to damage to soil structure...
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Catalogue: Ground Cover
It is not well controlled by fungicides and has a broad host range including rice, canola, mustard, narrow-leafed lupins, barrel medic, potatoes, maize, strawberries, sugar beet, wheat, oats, barley and ryegrass... While no single strain attacks the whole range of crop plants, the AG8 strain causes bare patch and root rot in cereals, canola and legumes... For the moment, researchers at least have a better understanding of how Rhizoctonia has so far been able to outwit all attempts to protect crops from its ravages and have important leads to follow to probe for weaknesses in the pathogen and to strengthen plant defences...
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Catalogue: Ground Cover
Crop sequence does affect Rhizoctonia.. Non-cereal break crops, especially canola, can reduce inoculum levels of Rhizoctonia, despite still being susceptible to damage by this root pathogen - By Vadakattu Gupta.. , data from this work and from previous root disease research is being used to build the soil-borne disease component of the Land-Use Sequence Optimiser (LUSO) model (see page 10)...
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Catalogue: GRDC Final Reports
The results after 13 months of continuous grazing are shown in the Table below... There is particular interest in the grazing tolerance and drought tolerance of these hybrids... 7. New blue green aphid biotype As reported under "Other Research and Development Opportunities", we believe that we have discovered a new BGA biotype...
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Catalogue: GRDC Updates
Paddock scale farmer demonstration sites have been established for 2 sites (Wynarka and near Mantung) and aim to test: - early cultivation after summer/autumn rains and one week prior to sowing, - one cultivation one week prior to sowing, - no till and - no till with higher inputs... Pasture Management The Wynarka paddock had an excellent 20-30cm high medic pasture in 2010, with barley grass measured at 25% in September in the Spray Topped half of the paddock... While grass removal in the pasture had shown the greatest effect in reducing rhizictonia innoculum, and has decreased the visual crop symptoms compare to the spray topped treatments, this site has shown that early tillage has still had the greatest impact of reducing root damage...
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