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annual ryegrass seed

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Catalogue: Ground Cover
With annual ryegrass costing Australian grain growers more than $360 million a year in control measures, PhD student Joe Moore has joined the effort to look for alternatives to manage the weed's invasive spread.. "If we can establish that the endophyte is contributing to making annual ryegrass more of an invasive weed, it may be that elimination of the endophyte is a viable option for controlling the weed," Mr Moore says... To test if endophytes contribute to making the plant more competitive as a weed, Mr Moore removes the endophytes from annual ryegrass seeds, without damaging the seeds, so they can be grown and used for further experiments...
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Catalogue: GRDC Updates
Results 2008/2009 harvest HSD testing The HSD system proved its potential as an effective at harvest weed seed management system by consistently destroying over 90% of the seed of four weed species present in the chaff fraction during the commercial harvest of a wheat crop... 39 (3.3) 1.0 (0.1) 1 Seed in straw were calculated by difference from seed proportions in grain and chaff samples 2 Proportion of annual ryegrass seed in unprocessed chaff surviving HSD treatment 2009/2010 harvest HSD testing High weed seed destruction levels were maintained by the HSD system when subjected to processing high amounts of chaff during the commercial harvest of high yielding wheat, barley and lupin crops (Table 2)... Conclusion Evaluation of the HSD system in commercial harvest situations has determined this system is highly effective (>90%) in destroying annual ryegrass, wild radish, brome grass and wild oat seed during harvest...
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Catalogue: GRDC Publications
The benefits improve crop health and crop competitive ability against weeds and the effectiveness of pre-emergent herbicides... When used as a post-emergent product, little of the herbicide gets to the roots and the control of established weeds is often very poor... benefits arise when the weed is prevented from setting seed as there are no increases to the seedbank and, as a consequence, fewer weeds in the future...
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Catalogue: GRDC Updates (West)
Project No.: DAW 672 Paper reviewed by: David Minkey and Abul Hashem Crop Updates is a partnership between the Department of Agriculture, Western Australia and the Grains Research & Development Corporation 20.. The negative impact of Raptor and Spinnaker on herbage production observed in the 4 advanced breeding lines (Crop Updates 2004) was not reflected as lower seed set... Overall, 2,4-D and Gramoxone were the most damaging to legume seed production; this reflected the impact of these treatments on herbage production (Crop Updates 2004)...
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Catalogue: GRDC Final Reports
1.1) Fitness costs of herbicide resistance in a multiple-resistant L. rigidum biotype The L. rigidum biotype SLR31 exhibits multiple herbicide resistance due to the possession of two mechanisms; an insensitive ACCase target site and enhanced metabolic activity of the detoxifying P450 enzyme family... It is essential that alternate herbicide chemistries are evaluated for their potential to control annual ryegrass and wild radish... As it is likely that the capacity of harvesters will continue to increase, a logical approach to developing an effective weed seed # refer to 'Report disclaimer' grinding system was to focus on processing only the weed seed containing fraction of the chaff...
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Catalogue: GRDC Media
Research targets clethodim resistant annual ryegrass.. Chris Preston, of The University of Adelaide, has led GRDC-funded short and long-term trials with the aim of developing alternative management practices to help growers manage clethodim resistant annual ryegrass in canola crops... Dr Preston said a 2015 trial at Roseworthy, SA, showed hybrid and high vigour canola varieties offered a simple opportunity to reduce annual ryegrass seed set by providing extra competition against the weed during the growing season...
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Catalogue: GRDC Final Reports
The maximum potential of collection by baling this material was only 50% of the seed that enters the header... Two different approaches determined that higher temperatures during seed development correlated with greater germinability (less dormancy) when measured at harvest and following five months of after-ripening (Steadman et al. 2004; Steadman & Ellery 2004)... A single batch of seeds will after-ripen faster in the north (e.g. Mullewa) than the south (e.g. Mt. Barker) of the wheat belt due to the temperature difference (Steadman et al. 2003a)...
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Catalogue: GRDC Media
Grain Orana Alliance (GOA) chief executive Maurie Street says each weed variety has a critical temperature to burn at, for the seed to be destroyed - for example, ryegrass seeds must burn at 400 o C for at least 10 seconds to be effectively destroyed... Mr Street said the right preparation through harvest and choosing the right time and conditions to burn were the keys to ensuring a successful burn... "Burning when the weather is too hot increases the chance of fire escapes, but burning when it is too cold can mean the critical temperatures for seed kill is not achieved," Mr Street said...
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Catalogue: GRDC Media
Grain Orana Alliance (GOA) chief executive Maurie Street says each weed variety has a critical temperature to burn at, for the seed to be destroyed - for example, ryegrass seeds must burn at 400 o C for at least 10 seconds to be effectively destroyed... Mr Street said the right preparation through harvest and choosing the right time and conditions to burn were the keys to ensuring a successful burn... "Burning when the weather is too hot increases the chance of fire escapes, but burning when it is too cold can mean the critical temperatures for seed kill is not achieved," Mr Street said...
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