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weed seed management

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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 Media
Australian cereal growers adopting harvest weed seed control systems (HWSC) are driving down weed populations to lower levels on their farms, and extending the life of the herbicides they use... Dr Walsh said the problem of herbicide resistant weed populations globally was particularly severe in production systems where herbicide dependence resulted in a lack of weed control diversity... "Although herbicides remain the number one weed control tool in Australian cropping systems, it is now clear that the inclusion of HWSC systems in weed management programs is enabling weed populations to be driven to very low levels, providing some insurance for the sustainability of remaining herbicide resources," he said...
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Catalogue: GRDC Media
Early sowing of mid and longer maturing wheats can boost whole farm profits.. CSIRO Agriculture's Dr James Hunt says APSIM modeling indicates that - even with WA's Mediterranean climate - sowing opportunities in this State occur often enough so that adoption of longer maturing varieties for earlier planting has potential to increase whole farm wheat yields, particularly in medium and high rainfall zones... Dr Hunt says using a variety such as Whistler to bring sowing dates forward would allow growers to take advantage of early planting opportunities across a broad window from late March to early May and its stable flowering date would reduce frost risk...
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Catalogue: GRDC Media
Destroy weed seeds with narrow windrow burning.. Narrow windrow burning could be the answer for grain growers looking for a simple, low cost way of destroying weed seeds after harvest... Narrow Windrow Burning involves adding a chute to the harvester (top) to direct the chaff into a narrow windrow, which is later burnt (bottom) to destroy weed seeds...
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Catalogue: GRDC Media
Great Southern farmers doing 'interesting things out the back of their headers' to tackle weed seeds will be put under the research spotlight this harvest... Through its Regional Cropping Solutions (RCS) initiative, the Grains Research and Development Corporation (GRDC) is supporting the production of case studies of Albany port zone growers who are using low cost, innovative methods of weed seed collection or destruction... The booklet is expected to be completed and available to farmers, researchers and other industry representatives before the 2013-14 harvest...
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Catalogue: GRDC Media
Understanding a weed seed's potential for persistence - the timeframe weed seeds survive within the soil - is crucial to determining whether spraying or burial methods will be the most effective form of control... Department of Agriculture, Fisheries and Forestry (DAFF) principal research scientist Dr Michael Widderick says driving down the weed seed bank is growers' best defence against herbicide resistance issues and requires growers to deal with both the weed seeds already existing in the soil and stopping additional weed seeds from entering the soil... Audio download: Click on the audio icon below to hear Department of Agriculture, Fisheries and Forestry (DAFF) principal research scientist Dr Michael Widderick...
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Catalogue: GRDC Final Reports
The main IWM tool not widely adopted is crop competition, the major reason being that growers are locked into wide row spacing with their current seeding machinery... As most growers have experienced and accepted the problem, I believe we will be in a better position to implement effective management of resistant weeds in the future... There is renewed interest in chaff carts with 30% of growers surveyed likely to adopt this practice in the next five years...
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Catalogue: GRDC Media
With winter crop harvest fast approaching, growers are being urged to take weed seed samples to help map out an effective weed management strategy for the upcoming season... Taking seed samples from survivor weeds at harvest and sending them off for testing will allow growers to assess their control options for next year," Mr Street said... "Herbicide resistance costs the northern grains industry tens of millions of dollars each year and unless growers understand the resistance status of the weeds on their farm, they can't have full confidence that their normal control measures will continue to work in the future."..
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Catalogue: GRDC Media
Ray Harrington to address NSW IWM workshops.. Western Australian grower and inventor of the renowned Harrington Seed Destructor, Ray Harrington, will be a keynote speaker at a series of one day workshops aimed at addressing management strategies for the region's most problematic weeds through the destruction of weed seedbanks and use of integrated control options to improve cropping options and profitability... The workshops are run by ICAN Rural as part of a new project supported by the Grains Research and Development Corporation (GRDC) and being held in partnership with WeedSmart, an industry-led initiative managed by AHRI which is aimed at enhancing on-farm practices and promoting the long term sustainability of herbicide use in Australian agriculture...
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Catalogue: GRDC YouTube channel
" GRDC Grains Research Updates 6-7 March 2012, Northern Region, Goondiwindi QLD. Michael Widderick 19 September 2013 Michael Widderick, DEEDI, talks about weed seed management at harvest in Northern Region cropping systems... Annual weeds in cropping systems are all totally reliant on a viable seed bank the need to control this seed bank at harvest... Technology to reduce spray drift GCTV: Drift Reducing Technology..
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