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weed seed bank

Catalogue: GRDC Media
With harvest in full swing, many growers are putting into practice harvest weed seed control (HWSC) systems to help tackle weeds - which are at high levels this season... Many growers are probably already familiar with the HWSC options of narrow windrow burning, chaff carts, the Harrington Seed Destructor and the Bale Direct system (baling all chaff and straw material as it exits the harvester)... The chaff deck places the chaff exiting the sieves of the harvester on to permanent wheel tracks, and it is estimated that up to 70 of these units are being used across WA's South Coast region this harvest...
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Catalogue: GRDC Media
With harvest in full swing, many growers are putting into practice harvest weed seed control (HWSC) systems to help tackle weeds - which are at high levels this season... Many growers are probably already familiar with the HWSC options of narrow windrow burning, chaff carts, the Harrington Seed Destructor and the Bale Direct system (baling all chaff and straw material as it exits the harvester)... The chaff deck places the chaff exiting the sieves of the harvester on to permanent wheel tracks, and it is estimated that up to 70 of these units are being used across WA's South Coast region this harvest...
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Catalogue: GRDC Media
WeedSmart campaign bolsters GRDC efforts to combat costly herbicide resistance.. The Grains Research and Development Corporation (GRDC) has thrown its support behind WeedSmart , an important all-of-industry national program to arm growers and agronomists with the tools needed to fight herbicide resistance... Caption: GRDC Senior Manager Plant Health, Dr Rohan Rainbow, says a collaborative approach to the industry-wide problem of herbicide resistance is needed to protect productivity and preserve long-term access to important chemicals...
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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: Nuffield Scholar Reports
The study is about the management of weeds in those HTGM crops that have been grown overseas... Reduced tillage/no-till/zero-till Conventional agricultural practice involved cultivation prior to sowing of a crop or pasture to kill weeds and prepare the seed bed... but only for a while" Phil Stahlman Weed scientist Kansas State University Going to a total RR system in the corn-soybean rotation has, I believe, made farmers lazy with many just using glyphosate for weed control...
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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
Seize opportunity to hunt down weed survivors.. The season is a good year to find glyphosate resistant ryegrass and to employ the double knock technique, according to AHRI communications leader Peter Newman... "Most of the grainbelt has received enough rain in recent weeks to encourage a good germination of winter weeds including annual ryegrass, and many growers will spray glyphosate to control them," Mr Newman said...
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Catalogue: GRDC Research Summaries
Fleabane is considered an important weed of reduced cultivation systems, from Western Australia to Emerald... Due to the increased prevalence of fleabane, costs of weed control in northern fallows have doubled in the last 10 years for many..... Keeping on top of fleabane - in-crop strategies, the role and impact of residual herbicides, crop competition and double-knock..
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Catalogue: GRDC Final Reports
Results from the study indicated that karrikinolide may be an efficient means of stimulating weed seeds to germinate... Results from the study provide insight into karrikinolide's mode of action, in that karrikinolide appears to be working as a germination stimulant rather than a dormancy breaking agent... Future research and development opportunities associated with karrikinolide involve expanding our knowledge in three key areas: (1) karrikinolide responsive species (2) optimising efficiency of karrikinolide application and (3) karrikinolide mode of action...
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Catalogue: GRDC Media
Pre-emergent herbicides typically have more variables that can affect efficacy than post-emergent chemistries and if not applied strategically, can result in poor crop emergence... Knife-point and press wheel seeders have been widely adopted and more recently, disc seeders have also been utilised... Research associate from the University of Adelaide's School of Agriculture, Food and Wine, Dr Sam Kleemann told advisors and growers attending the recent GRDC Grain Research Updates in Coonabarabran and Warren that the physical separation of crop seed and herbicide was imperative if crop damage was to be avoided...
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