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resistant ryegrass

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Catalogue: GRDC Updates (West)
KEYMESSAGES While resistance in annual ryegrass is common throughout the wheatbelt, resistance to some herbicides like glyphosate or paraquat/diquat is still rare in WA... Safeguard ryegrass could be used to increase the density of ryegrass in the following year, as it is susceptible to glyphosate (and resistant to ARGT)... Most of the pollen was produced by the resistant plants in the vineyard, and there was a very high chance of susceptible plants cross-pollinating to resistant plants...
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Catalogue: Ground Cover
Many growers have now come to realise that to manage resistant weeds takes a combination of a sound crop rotation, herbicides and non-herbicide weed management... Mr Newman, a weeds research officer with the Department of Agriculture and Food, WA (DAFWA), has led a nine-year, GRDC-funded survey into 31 'focus' paddocks on wheat farms across WA's northern agricultural region, where growers consider resistant weeds just another aspect of farming life. ".. The focus paddocks are skewed towards growers who had problems with resistant weeds and were motivated to do something about them...
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Catalogue: GRDC Media
Mullewa grower John Flannagan says that if you can find glyphosate resistant weeds you can manage them... "If you can find glyphosate resistant weeds you can manage them," said Mr Flannagan, who in the last 15 years has twice found patches of glyphosate resistant ryegrass on properties that they own or lease... "In the early 2000s and then again in 2009 we found patches of glyphosate resistant ryegrass on two different properties," Mr Flannagan said...
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Catalogue: GRDC Final Reports
Undertaking four case studies of farmers who have successfully managed herbicide resistance... Using the double knock approach where glyphosate is used first, then followed by paraquat # or Spray... Crop choice and herbicide use influenced ryegrass seed-set and subsequent numbers in the following crop...
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Catalogue: Ground Cover
University of Adelaide research associate Dr Sam Kleemann has conducted trials on the Koch family's property on the Victorian side of the border at Frances, SA, looking at herbicide strategies to control clethodim-resistant ryegrass... The research, by the University of Adelaide along with the MacKillop Farm Management Group, indicates that using an appropriate herbicide regime involving Roundup and triazine-tolerant (RT) canola (Table 1) followed by wheat in the second year improved control over resistant ryegrass by up to 70 per cent compared with standard grower practice strategies (first row in Table 1 - simazine incorporated by sowing (IBS) followed by atrazine and clethodim post-emergence)... University of Adelaide researcher Dr Sam Kleemann says it was unsurprising that the standard grower treatment during the canola phase gave poor ryegrass control...
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Catalogue: Ground Cover
University of Adelaide research associate Dr Sam Kleemann has conducted trials on the Koch family's property on the Victorian side of the border at Frances, SA, looking at herbicide strategies to control clethodim-resistant ryegrass... The research, by the University of Adelaide along with the MacKillop Farm Management Group, indicates that using an appropriate herbicide regime involving Roundup and triazine-tolerant (RT) canola (Table 1) followed by wheat in the second year improved control over resistant ryegrass by up to 70 per cent compared with standard grower practice strategies (first row in Table 1 - simazine incorporated by sowing (IBS) followed by atrazine and clethodim post-emergence)... University of Adelaide researcher Dr Sam Kleemann says it was unsurprising that the standard grower treatment during the canola phase gave poor ryegrass control...
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