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rhizoctonia root rot

Catalogue: GRDC Publications
Published: May 2012 ISBN: 978-1-921779-19-0 In submitting this report, the researchers have agreed to the GRDC publishing this material in its edited form... Incidence is 40 per_cent frequency in 25 per_cent of the area, so that the average incidence of the disease affecting the crop is 10 per_cent... Eighteen, including all the fungal diseases, of the 21 diseases surveyed were reported as present on lentils in the 8.3 Diseases of lentils Southern Region and in Australia...
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Catalogue: GRDC Media
"If disease levels don't break down over the summer, crops will be at risk next year, especially if growers select new varieties that aren't disease-tolerant," said Mr Sonogan, who is also an agronomic consultant based at Swan Hill (Victoria)... PreDicta B samples are processed weekly from February to mid May ( less frequently at other times of the year ) and tests are for most of the soil-borne diseases of cereals and some pulse crops, including CCN, crown rot, rhizoctonia root rot, take-all, Pratylenchus thornei, Pratylenchus neglectus, stem nematode and blackspot... Having examined the roots of crops during the 2014 growing season, Mr Sonogan said he observed non-typical expression of CCN disease this year...
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Catalogue: GRDC Media
"If disease levels don't break down over the summer, crops will be at risk next year, especially if growers select new varieties that aren't disease-tolerant," said Mr Sonogan, who is also an agronomic consultant based at Swan Hill (Victoria)... PreDicta B samples are processed weekly from February to mid May ( less frequently at other times of the year ) and tests are for most of the soil-borne diseases of cereals and some pulse crops, including CCN, crown rot, rhizoctonia root rot, take-all, Pratylenchus thornei, Pratylenchus neglectus, stem nematode and blackspot... Having examined the roots of crops during the 2014 growing season, Mr Sonogan said he observed non-typical expression of CCN disease this year...
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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 Final Reports
The findings of the project may provide encouragement to growers to use a number of management strategies to avoid the disease... Previous reports indicate that the disease becomes worse under conditions that reduce root growth, although very little is known of where and how the fungus invades roots... The developing GRDC Initiative on Rhizoctonia could build both of the aspects above into consideration of integrated management strategy for future farming systems utilising the equipment (microscopy and field and laboratory approaches) and ideas generated within the project...
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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
Stop disease and pest cycles in their tracks with crop checks this harvest.. Growers are being urged to test wheat and barley crops before or at harvest that are showing signs of soilborne diseases and pests - especially fusarium crown rot, rhizoctonia bare patch and root lesion nematodes (RLN)... Crown rot is caused by the soilborne fungus fusarium ( F. pseudograminearum and F. culmorum ), which infects plants at the crown and reduces water supply to the head...
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Catalogue: GRDC Media
Stop disease and pest cycles in their tracks with crop checks this harvest.. Test suspect wheat and barley paddocks for crown rot, rhizoctonia and root lesion nematodes this harvest to prepare for rotation planning in 2015... Growers are being urged to test wheat and barley crops before or at harvest that are showing signs of soilborne diseases and pests - especially fusarium crown rot, rhizoctonia bare patch and root lesion nematodes (RLN)...
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Catalogue: GRDC Final Reports
Previous reports indicate that the lack of soil cultivation and the use of sulfonyl-urea herbicides also exacerbate disease... Chapter 6: Influence of Temperature on Infection Data from earlier Chapters revealed that infection of wheat roots occurred closer to seeds at low temperature, the rates of root and hyphal growth converged at low temperature, and that seed exudation stimulated growth of R. solani AG-8 more at low temperature... Chapter 7: Final Discussion Results of these experiments demonstrate that low temperature exacerbates rhizoctonia root rot of wheat by causing several simultaneous changes in roots and hyphae that are conducive to disease...
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