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Catalogue: Broadacre Field Crops DAFF QLD
The inclusion of broadleaf crops during either winter or summer in Central Queensland (CQ) crop rotations can have a positive impact on the management of feathertop Rhodes grass (FTR)... Broad-leaved crops, such as winter and summer pulses, sunflower and cotton allow the use of grass selective post-emergent herbicides and, when used in conjunction with crop competition, can effectively limit FTR seed production... If your FTR densities are moderate to high, or on the rise, it is worth considering the inclusion of a pulse crop, sunflower or cotton to allow the use of effective residuals and grass selective herbicides...
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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 Updates
There was no impact on crop vigour or barley establishment and brome grass numbers were reduced by up to 54% by some pre-emergent chemicals... Burning also reduced numbers considerably by 58%, but its practice goes against a lot of No-Till system aims and the Northern and Yorke Natural Resources Management Board (NYNRM) objectives for ground cover... Local farmer case studies have shown that practices such as burning narrow wind-rows, re-seeding, an autumn tickle, growing competitive crops, spot spraying and chemical fallowing are all successful at reducing brome grass numbers...
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Catalogue: GRDC Factsheets
The use of Group A herbicides in fallow to control grass weeds such as the Chloris species - feathertop Rhodes grass (Chloris virgata) and windmill grass (Chloris truncata) - have shown to be a viable option for controlling young weeds... Recent research has investigated the use of some of these herbicides for fallow applications to control grass weeds, in particular the Chloris species - feathertop Rhodes grass (Chloris virgata) and windmill grass (C. truncata)... Trial results have shown that a minimum period of 5 to 7 days should occur between applications...
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Catalogue: GRDC Media
Landholders across Australia are being urged to get to know the standard modes of action (MOA) for herbicides as a key strategy for protecting against the evolution of resistant weed populations... Dr Chris Preston, University of Adelaide Associate Professor - weed management says understanding and rotating herbicide MOAs is crucial for protecting current herbicides... Since then all new active ingredients introduced belong to existing herbicide modes of action."..
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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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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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Catalogue: GRDC Media
Weed videos show growers 'how to' at harvest.. "In addition to outlining the general concepts and practices of weed seed capture at harvest, there are excellent videos featuring design features of windrowing chutes and chaff carts, as well as practical tips on harvester set-up and windrow management," he said... Caption: Southern region grain growers contemplating weed seed control measures this harvest can access technical information 'bites' in new Grains Research and Development Corporation (GRDC) YouTube videos...
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Catalogue: GRDC Factsheets
A tactic that has rapidly increased in recent seasons is the use of pre-emergent herbicides, especially in the summer crop and fallow... The presence of stubble or existing vegetation can intercept herbicide before it reaches the soil surface... In a zero till system, it is most likely that allow for weeds to germinate at depth and effect on the binding ability of herbicides the pre-emergent herbicide will need to grow through the herbicide band on the (adsorption)...
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Catalogue: GRDC Factsheets
Brome grass is becoming an increasing problem... Both species are commonly referred to as ripgut brome often resulting in confusion over correct identification... Recent research has shown that seed collected from field populations of both species are showing longer dormancy which appears to be under hormonal control within the seed embryo...
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