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root lesion nematode

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Catalogue: GRDC Media
After the plants have grown for 18 weeks, the nematodes are extracted from the soil and roots, and counted under a microscope to determine which plant lines have reduced nematode multiplication... Root-lesion nematodes (RLN) are considered most likely endemic to the Fertile Crescent region in the Middle East where wheat originated some 8,000 years BCE. From there, RLN probably spread around the world with grain cultivation across North Africa, Europe, America, and finally Australia... "We realised the resistances that aren't available in commercial wheats, do exist in their ancient ancestors," says Professor John Thompson, Crop Nematologist at University of Southern Queensland' who supervises the GRDC-funded wheat pre-breeding program into genetic options for RLN control...
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Catalogue: GRDC Media
After the plants have grown for 18 weeks, the nematodes are extracted from the soil and roots, and counted under a microscope to determine which plant lines have reduced nematode multiplication... Root-lesion nematodes (RLN) are considered most likely endemic to the Fertile Crescent region in the Middle East where wheat originated some 8,000 years BCE. From there, RLN probably spread around the world with grain cultivation across North Africa, Europe, America, and finally Australia... "We realised the resistances that aren't available in commercial wheats, do exist in their ancient ancestors," says Professor John Thompson, Crop Nematologist at University of Southern Queensland' who supervises the GRDC-funded wheat pre-breeding program into genetic options for RLN control...
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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 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
Crop rotations must be selected according to the species of root-lesion nematode present on your farm... Summer crops offer a means of reducing the populations of root-lesion nematodes but only when you know which species of root-lesion nematode is present... Results from a field experiment show that populations at 0-15 cm increased after harvest compared to the populations at planting (striped bar)...
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Catalogue: GRDC Updates
Summer crops that are resistant to root-lesion nematodes can be used to reduce nematode populations... In an experiment in 2011 at Formartin, several varieties of summer crops were grown and P. thornei populations were assessed before planting and after harvest... Means of several varieties within each crop are presented...
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Catalogue: GRDC Media
Detections of fusarium crown rot in Western Australian cereal crops have increased this season, particularly in central and northern cropping regions... The Department of Agriculture and Food (DAFWA) has reported constant demand this season on its diagnostic service, AGWEST Plant Laboratories (APL), to identify root diseases including crown rot present in samples... The key message to growers from DAFWA researchers including Daniel H berli and Shahajahan Miyan is to test wheat and barley crops before or at harvest if they are showing signs of crown rot or other soilborne diseases and pests such as rhizoctonia bare patch and root lesion nematodes (RLN)...
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Catalogue: Ground Cover
Northern New South Wales grower and agronomist Drew Penberthy is road-testing new research findings on a DNA-based soil test to help better predict crown rot risk in northern farming systems... "New soil sampling techniques for the PreDicta B test could provide savings in terms of the preparation and analysis of stubble testing for crown rot," Drew says... Drew, who also runs a business that provides stubble testing for crown rot and soil testing for root lesion nematodes, says most growers in the northern grains region undertake two separate tests for these cereal pathogens...
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Catalogue: GRDC Media
Drew Penberthy, Crown Analytical Services (CAS) and Penagcon and Rob Long, CAS and B&W Rural, Moree, NSW organised the information day and say good attendance was testament to the impact of the issues... "Nematodes, crown rot and lower protein levels impacted on yield and profits in the 2012 season, which was characterised by a wet start, particularly cold and wet July and then virtually no rain," Mr Long said... Crown Analytical Services manages Grains Research and Development Corporation (GRDC)-funded research trials into crown rot in the Moree district and Mr Long says the disease became an issue as conditions dried out late in the season...
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Catalogue: GRDC Media
Drew Penberthy, Crown Analytical Services (CAS) and Penagcon and Rob Long, CAS and B&W Rural, Moree, NSW organised the information day and say good attendance was testament to the impact of the issues... "Nematodes, crown rot and lower protein levels impacted on yield and profits in the 2012 season, which was characterised by a wet start, particularly cold and wet July and then virtually no rain," Mr Long said... Crown Analytical Services manages Grains Research and Development Corporation (GRDC)-funded research trials into crown rot in the Moree district and Mr Long says the disease became an issue as conditions dried out late in the season...
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