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glyphosate resistance

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Catalogue: GRDC Updates (West)
Mention of a trade name or company in this publication does not imply endorsement of any product or company by the Department of Agriculture and Food, Western Australia... Overall, 60-70 per cent of flour is used in traditional flat breads, 20-25 per cent of flour is used in western style breads and 5-10 per cent is used in cakes and biscuits... In summary, canola varieties sown 2-3 weeks earlier than normal (early to mid April) can be grazed in winter prior to bud elongation (usually providing 600-800 dse grazing days/ha) and recover with no impact on yield or oil...
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Catalogue: GRDC Updates (West)
KEYMESSAGES While resistance in annual ryegrass is common throughout the wheatbelt, resistance to some herbicides like glyphosate or paraquat/diquat is still rare in WA... Safeguard ryegrass could be used to increase the density of ryegrass in the following year, as it is susceptible to glyphosate (and resistant to ARGT)... Most of the pollen was produced by the resistant plants in the vineyard, and there was a very high chance of susceptible plants cross-pollinating to resistant plants...
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Catalogue: Ground Cover
To Keep your herbicides: stop survivors from setting seed.. Keeping weeds 'off-balance' by mixing up controls and keeping their numbers low is the aim of integrated weed management (IWM), where different practices are combined to prevent weeds from adapting to a single control option... The interactive, one-day grower workshops focus on how to manage weed populations and ensure that herbicide resistance does not dictate how they farm...
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Catalogue: GRDC Updates
Glyphosate resistance in annual ryegrass and other weeds is fast increasing in Australia... Resistance may result from immigration of resistant genes, not just from repeated applications of herbicides from the same mode of action... Since glyphosate resistance in weeds is so important for farming systems of Western Australia, it is necessary to know how many annual applications of glyphosate (at low and high rates) are required to develop glyphosate resistance in annual ryegrass in the absence of cropping, grazing and application of herbicides from other modes of action...
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Catalogue: GRDC Media
The new Gunnedah population on the left looks healthy, showing it has a much higher level of resistance compared to the sample in the centre which is known to be susceptible, and the original resistant Moree population on the right... The world's third case of glyphosate resistant liverseed grass has been confirmed in northern New South Wales, seven years after the first two cases were confirmed from east of Moree... "While this is only the third confirmed case of glyphosate resistant liverseed grass in seven years, it comes from a new area and has a much higher level of resistance than previous populations," stated Tony Cook, Technical Specialist (Weeds) with NSW Department of Primary Industries...
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Catalogue: Ground Cover
To minimise the development of glyphosate resistance among weeds, the GRDC has been instrumental in developing a working group on the sustainable use of this key herbicide in Australian cropping... The national Glyphosate Sustainability Working Group includes research and industry representatives from the CRC for Australian Weed Management (CRCAWM), Nufarm, Syngenta, Monsanto, Avcare, University of Western Australia"s WA Herbicide Resistance Initiative, NSW Agriculture, Queensland DPI&F, University of Adelaide and Charles Sturt University... The group is chaired by CRCAWM"s Dr Rick Llewellyn, from UWA...
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Catalogue: GRDC Updates (West)
The trials demonstrated the benefits of hybrid vigour in canola and showed that Canola Breeders RR hybrids will provide major economic benefits to growers... AIMS The goal of this work was to test the yield potential of new RR canola hybrids developed by Canola Breeders at two locations in eastern Australia in 2008... Crop Updates is a partnership between the Department of Agriculture and Food, Western Australia and the Grains Research & Development Corporation 184..
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Catalogue: GRDC Publications
The results of the experiments have given Jeff the confidence to realise that he does have a viable, cost-effective alternative knockdown herbicide to glyphosate... Double knockdown (T 2.2b, page 128) Weather permitting, a double knockdown is implemented on resistant ryegrass paddocks prior to sowing using two non-selective herbicides (glyphosate followed by paraquat + diquat or paraquat, the choice being dependent upon the range of weeds present)... Helpful advice The Grays still enjoy the challenges and can see that they have made enough progress to feel they are being successful in managing a serious annual ryegrass problem...
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Catalogue: Ground Cover
Northern region Grains Research Updates coordinator John Cameron reflects on the vast changes that researchers and growers have implemented over the past two decades, and the one problem that just will not go away - weeds.. No-till has become crucial to northern grains production but faces a major weed-control challenge... In the short term, the no-till system will be defended by tactics such as pre-emergent herbicides, double knock using paraquat, and the use of tillage when weeds cannot be or are uneconomical to control using herbicides...
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Catalogue: GRDC Media
Glyphosate resistance survey finds SA growers at risk.. The random survey, conducted by the University of Adelaide and funded by the Grains Research and Development Corporation (GRDC), has shown it is time for farmers to make significant changes to weed management to halt this problem... "We knew there was some glyphosate resistance in the area from previous work," stated Associate Professor Chris Preston of the University of Adelaide and project leader, "but this surprised all of us and has set the alarm bells ringing to bring in changes to weed management...
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