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fleabane

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Catalogue: GRDC Media
Early control thwarts fleabane.. Tony Cook, NSW Department of Primary Industries (NSW DPI) weeds technical specialist based at Tamworth says prevention is better than cure when it comes to controlling fleabane and he recommends pre-emergent or seedling management... Mr Cook says fleabane has spread largely because it thrives in the no-till farming system due to its surface-germinating seed which, under this system, lies undisturbed by tillage or soil coverage...
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Catalogue: GRDC Updates
Fleabane visual rating was assessed over time... Only Gramoxone (1.6L/ha) mixing with atrazine (1.5kg/ha) continued to show excellent residual activity, achieving 93% control of fleabane at 164 days after treatment (about 5.5 months)... Results showed that both October treatments of Cut followed by either single knock or double knock significantly improved fleabane control...
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Catalogue: GRDC Media
Grains Research and Development Corporation (GRDC) supported surveys have found that, while originally restricted to WA's southern cropping areas, fleabane has gradually spread throughout the grainbelt... Dr Peltzer said growers would need to monitor for fleabane in August and September this year, when it was possible high numbers of the weed would germinate... Region West < Keep browsing 0 Responses to Call for vigilance on fleabane as weed spreads in WA..
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Catalogue: GRDC Updates
Diligence is required throughout the year for effective control of this weed... While such weeds appear small in size, they can be quite old (2 or 3 months) and are very difficult to control... Once glyphosate resistance is common in a weed population, alternatives to glyphosate have to be used to control that population all the time and it is a recurring cost...
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Catalogue: GRDC Media
Mr Storrie says 82 confirmed cases of glyphosate-resistant annual ryegrass have been recorded in winter grain crops including wheat, canola and pulses from NSW to Western Australia. ".. This is the tip of the iceberg, as our most valuable herbicide, glyphosate, has been used for long enough to prime weed populations for resistance," Mr Storrie said. ".. If there is ryegrass still alive after two applications of glyphosate in a canola crop, you have a fair indication they are resistant, but it is a good idea to get a Quick-test@" done as well for suspected problem weeds from other crops and fallows," Mr Storrie said...
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Catalogue: GRDC Media
Researchers say 23 weed species are now at high risk of developing glyphosate resistance, including several important grasses and damaging environmental weeds like fireweed and parthenium weed... Two hundred weed species were analysed to determine their innate likelihood to evolve and change in response to continued selection by herbicides in projects funded under the recently completed Department of Agriculture, Fisheries and Forestry (DAFF) National Weeds and Productivity Research Program managed by Rural Industries Research & Development Corporation (RIRDC), involving Department of Agriculture, Fisheries & Forestry Queensland and a number of other organisations... Project member, David Thornby, Queensland Department of Agriculture, Fisheries and Forestry (DAFF) says weed managers have a range of weed management tactics available to them for each species...
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Catalogue: GRDC Media
Elmore grains forum to set foundations for season 2012 Grain growers throughout north central Victoria will soon converge on Elmore to explore the options available to them as they adapt to changing market, environmental and agronomic conditions... The Grains Research and Development Corporation (GRDC) Grains Research Update for growers on Thursday, February 16, will feature a line-up of industry experts from across the country who will provide advice and support to growers preparing for the 2012 cropping season and beyond... Maurie Street, Chief Executive Officer of the Grain Orana Alliance (GOA), based in New South Wales' central west, will provide growers with an update on research into canola windrow timing and direct heading, while Steve Marcroft of Marcroft Grains Pathology at Horsham will advise on how growers can stay on top of canola's "public enemy number one" - blackleg...
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Catalogue: GRDC Media
A just confirmed case of annual ryegrass resistant to both glyphosate and paraquat is a warning to all farmers that rotating herbicide modes of action alone does not solve all your herbicide resistance problems, according to researchers... The Australian Glyphosate Sustainability Working Group (AGSWG), supported by the Grains Research and Development Corporation (GRDC), said it was the first case of glyphosate plus paraquat resistance in any weed species in Western Australia and a world first for wine grapes... AGSWG executive officer Andrew Storrie said the multiple herbicide resistance appeared to have been caused by 20 years of unplanned rotating of paraquat and glyphosate when treating the vine row strip...
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Catalogue: GRDC Media
Weed management authorities, with support from the Grains Research and Development Authority (GRDC), say the best form of defence against fleabane is an integrated approach combining the use of competitive crops and pastures, grazing, herbicides, cultivation and targeting weeds at the vulnerable stages of their lifecycle... Mr Minehan said it was necessary to enlist additional forms of control, and regardless of the measures used, targeting weeds when young and actively growing was the factor most critical to effective management... Caption: Landholders are advised to also target fencelines and roadsides, as well as crops, pastures and fallow paddocks, in their bid to manage fleabane...
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Catalogue: Broadacre Field Crops DAFF QLD
The focus for the now named Australian Herbicide Resistance Initiative (AHRI) will continue to be on strategic and applied research aimed at minimising the adverse impacts of herbicide resistance and weed problems on Australian cropping... To achieve the national focus, there will be collaboration with the Department of Agriculture and Food in Western Australia, the Department of Agriculture, Fisheries and Forestry (DAFF) in Queensland and the Universities of Melbourne and Adelaide... The new research program extends from agronomic techniques for the management of crop weeds through to fundamental research on the molecular and genetic factors determining herbicide resistance evolution...
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