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rhizoctonia

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Catalogue: Ground Cover
Paul Bogacki (left) from SARDI and Jack Desbiolles from the University of South Australia, discuss the plot layout for the Rhizoctonia fungicide trial, which has included surface, seed and deep placement of the fungicide... The difference in root growth in wheat plants treated with fungicicde (left) and without to control Rhizoctonia at the Karoonda, SA, trial site... Research results indicate the risk of Rhizoctonia damage will be reduced for: cereals following grass-free canola, pulses and pastures; crops with rapid early root growth down the soil profile - consider sowing early with soil disturbance below the seed, deep band nitrogen and new fungicide seed dressings; and registered fungicide seed dressings used in paddocks with low to moderate levels of Rhizoctonia..
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Catalogue: GRDC Research Summaries
Rhizoctonia has been a constant threat to grain production in South Australia over the past decade, and emerged as a significant root disease in many South Australian crops in 2009, with barley being particularly affected... It is estimated that some crops have had their yield potential reduced by in excess of 50% as a result of this rhizoctonia infection... The high levels of rhizoctonia were the result of a combination of conditions conducive to infection, reduced fertiliser inputs, and changing.....
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Catalogue: GRDC Research Summaries
Rhizoctonia has been a constant threat to grain production in South Australia over the past decade, and emerged as a significant root disease in many South Australian crops in 2009, with barley being particularly affected... It is estimated that some crops have had their yield potential reduced by in excess of 50% as a result of this rhizoctonia infection... The high levels of rhizoctonia were the result of a combination of conditions conducive to infection, reduced fertiliser inputs, and changing.....
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Catalogue: GRDC Research Summaries
Rhizoctonia bare patch disease remains an important but unpredictable disease for cereals in the southern Australian agricultural region... Management of natural disease suppressive ability of soils has been suggested as a potential solution to control Rhizoctonia bare patch disease... The project will address (i) the shorter-term solutions such as rotation, tillage and fungicides to reduce disease incidence and increase plant growth and yield and (ii) will develop new knowledge that will assist in a longer-term control of Rhizoctonia through improving our understanding and management of natural soil suppressive activity & improved prediction of disease occurrence...
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Catalogue: GRDC Media
Research sheds light on Rhizoctonia control.. Research sheds light on Rhizoctonia control The use of break crops significantly reduces Rhizoctonia inoculum levels, but this beneficial effect lasts only until the end of the following cereal crop... The lower levels are maintained through to the end of the next summer reducing the risk of Rhizoctonia damage to the crop grown in the year following the break crop. "..
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Catalogue: GRDC Media
Research sheds light on Rhizoctonia control.. Research sheds light on Rhizoctonia control The use of break crops significantly reduces Rhizoctonia inoculum levels, but this beneficial effect lasts only until the end of the following cereal crop... The lower levels are maintained through to the end of the next summer reducing the risk of Rhizoctonia damage to the crop grown in the year following the break crop. "..
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Catalogue: GRDC Updates
, Desbiolles, J. 3, Ophel-Keller, K.1, Roget, D.K.4 1SARDI, Urrbrae, SA 5064; 2CSIRO Ecosystem Sciences, Urrbrae, SA 5064; 3 UniSA, Barbara Hardy Institute, Mawson Lakes SA 5095, 4 formerly CSIRO Introduction New projects with co-investment from GRDC, SAGIT, Syngenta and Bayer Crop Science are working to develop banding techniques for growers to control Rhizoctonia... Other factors increasing Rhizoctonia disease risk includes greater adoption of intensive cereals and reduced tillage (Figure 1)... Disease severity depends on a number of factors including the amount of Rhizoctonia inoculum at seeding, composition and activity of the soil biology community, available soil N levels over summer and at seeding and constraints to root growth including herbicide damage, low soil temperatures during early seedling growth and compaction layers...
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Catalogue: GRDC Research Summaries
There has been a considerable increase in the incidence of crops affected by root lesion nematode (RLN) throughout the Western Australian (WA) cropping region... The recent root disease survey showed that the highest levels of all root diseases in WA are in the southern high rainfall zone... The objectives of the project are to:1) Identify sites in WA that are suppressive to one or more root diseases of wheat including take-all, rhizoctonia root rot, crown rot and RLN. Sites will be selected from three past and current projects including the DAFWA "Profitable crop sequencing in WA" [P. WHITE, M. HARRIES] project (which will establish 150 focus sites at which inoculum level and disease incidence will be measured), the "Soil Quality" [D. MURPHY] project (which has previously established a large number of geo-referenced monitoring sites around the WA agricultural region and the inoculum level was measured), and the DAFWA 2006-2008 cereal root disease survey sites [DAW00159]...
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Catalogue: GRDC Media
Growers can give themselves a head start for next season by adhering to some basic practices when it comes to retaining seed from this year's harvest... For growers with varying soil types across their farm, he said the seeds they keep for next year need to come from crops that were grown on more fertile soils... "Seed dressing would mean the retained seed would end up with a richer supply of nutrients for germinating seed, but the late spray is something that growers can get out of the way early and not worry about the following year - the seed is treated and can be stored easily," Dr Wilhelm said...
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Catalogue: GRDC Media
Select a seeding system for your soil.. "When selecting for a higher SBU system, there are many factors to consider including single or double shoot, distinct split-rows or a wide band sowing, integrated opener design or wing attachment for an existing opener, and fertiliser placement relative to the seed zone," Dr Desbiolles said... "The best treatment, reaching over 90 percent emergence, in the Moorlands trial was obtained by adding a shallow operating scooping share ahead of a triple disc seeding system to clear away the top 3-4cm of soil into the inter-row zone and assist with placing seeds into moist soil," Dr Desbiolles said...
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