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harvest weed seed control hwsc

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Catalogue: GRDC Media
Pioneering Western Australian research into techniques to control weed seeds in grain paddocks at harvest time has received international recognition... Dr Walsh said the research, funded by the Grains Research and Development Corporation (GRDC), proved that a high level of weed seeds is retained at wheat crop harvest time, providing further evidence of the effectiveness of harvest weed seed control (HWSC) in preventing weeds from replenishing the seed bank... "The research demonstrated that the four dominant annual weeds of Australian cropping systems - annual ryegrass, wild radish, brome grass and wild oats - retain 77 to 95 per cent of their seeds above a harvest cut height of 15cm at wheat crop maturity," he said...
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Catalogue: GRDC Updates
Herbicides are not the answer to herbicide resistance... Sixteen of the growers practiced HWSC in the form of narrow windrow burning in only 12% of years (i.e. Herbicides only group)... In the eighth year of using this practice these growers had zero ryegrass in their focus paddocks and have averaged less than 1.5 ryegrass plants /m 2 ever since...
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Catalogue: GRDC Media
Controlling weed seed at harvest may be growers' best line of defence in combatting the on-going battle against herbicide resistance... With headers now dotted across winter crop paddocks in New South Wales and Queensland, the Grains Research and Development Corporation (GRDC) is reminding growers that driving down the weed seed bank is critical to managing herbicide resistance... "Driving down the weed seed bank is growers' best defence against herbicide resistance and that centres on two key considerations - dealing with the weed seeds already existing in the soil and stopping additional weed seeds from entering the soil...
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Catalogue: GRDC Media
Harvest weed seed control plays an important role in stopping weed seeds from entering the soil... Addressing growers and advisers at the GRDC Updates earlier this year, Department of Agriculture, Fisheries and Forestry (DAFF) principal research scientist Dr Michael Widderick said while resistance to one mode of action herbicide was extremely common in the north, many cases of multiple or cross resistance was also now occurring particularly in problem weeds like wild oats... Caption: Department of Agriculture, Fisheries and Forestry (DAFF) principal research scientist Dr Michael Widderick emphasised the importance of driving down the weed seed bank for effective herbicide resistance management during a presentation to the GRDC Northern Grains Research Update at Goondwindi earlier this year...
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Catalogue: GRDC Media
Grain growers in Western Australia's southern cropping regions can find out at workshops hosted by the Australian Herbicide Resistance Initiative (AHRI) and WeedSmart, with support from the Grains Research and Development Corporation (GRDC)... AHRI communications leader Peter Newman said the workshops would explore measures that could be incorporated into farming systems to give crops the upper hand against weeds... "We will discuss how leading growers have used harvest weed seed control (HWSC) techniques to manage weeds and provide local simulations using the Ryegrass Integrated Management (RIM) model to target the seedbank," he said...
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