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Catalogue: GRDC Updates
Some populations of the weed are resistant to glyphosate as a result of this herbicide being relied upon repeatedly and almost exclusively for weed control in fallows... An additional range of single and double-knock treatments have been evaluated for fallow control of fleabane across Qld and NSW... Specifics of rate and product have been deleted from the above figure as NONE of the herbicides listed are registered for the control of fleabane...
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Catalogue: GRDC YouTube channel
0.969: Jane Drinkwater: Narrator The problem of Glyphosate resistant summer 3.04: grasses is becoming one of the most pressing issues that growers currently face... 8.509: Australia currently has three species of summer grass confirmed as Glyphosate resistant - liverseed 14.059: grass, windmill grass and awnless barnyard grass... 17.279: Michael Widderick: Principal Research Scientist QDAFF Toowoomba 18.3: Recently there's been a survey conducted just on barnyard grass and it showed that out of 22.73: approximately 80 samples collected randomly across the region, sixty percent of those 27.839: were Glyphosate resistant...
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Catalogue: Ground Cover
Small, early tillering weeds should be the target of Group A herbicides; these herbicides are less effective when weed size increases.. Many northern growers are now dealing with grass weeds in fallow that are not well controlled by glyphosate, with grower feedback indicating that alternative solutions to control these weeds are required... Research by the GRDC-funded Grower Solutions Groups has demonstrated that the use of Group A herbicides in fallow can be a viable option to control young grass weeds in certain situations...
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Catalogue: Ground Cover
Small, early tillering weeds should be the target of Group A herbicides; these herbicides are less effective when weed size increases.. Many northern growers are now dealing with grass weeds in fallow that are not well controlled by glyphosate, with grower feedback indicating that alternative solutions to control these weeds are required... Research by the GRDC-funded Grower Solutions Groups has demonstrated that the use of Group A herbicides in fallow can be a viable option to control young grass weeds in certain situations...
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Catalogue: GRDC Factsheets
Optimal timing between applications is dependent upon the herbicides used and the weeds being targeted... The most common double Knock approach is to apply a systemic herbicide (for example Groups A, i or M are frequently used) when conditions are favourable for maximum translocation, and then follow it with a contact herbicide such as the bipyridyls (Group L)... double Knock trial results show consistently high performance when applied to small weeds (prior to tillering for grass weeds and prior to stem elongation for broadleafs) and the applications are applied on time with correct application set-up and climatic conditions...
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Catalogue: GRDC Factsheets
Optimal timing between applications is dependent upon the herbicides used and the weeds being targeted... The most common double Knock approach is to apply a systemic herbicide (for example Groups A, i or M are frequently used) when conditions are favourable for maximum translocation, and then follow it with a contact herbicide such as the bipyridyls (Group L)... double Knock trial results show consistently high performance when applied to small weeds (prior to tillering for grass weeds and prior to stem elongation for broadleafs) and the applications are applied on time with correct application set-up and climatic conditions...
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Catalogue: GRDC Factsheets
Optimal timing between applications is dependent upon the herbicides used and the weeds being targeted... The most common double Knock approach is to apply a systemic herbicide (for example Groups A, i or M are frequently used) when conditions are favourable for maximum translocation, and then follow it with a contact herbicide such as the bipyridyls (Group L)... double Knock trial results show consistently high performance when applied to small weeds (prior to tillering for grass weeds and prior to stem elongation for broadleafs) and the applications are applied on time with correct application set-up and climatic conditions...
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Catalogue: GRDC Updates
Some populations of the weed are resistant to glyphosate as a result of this herbicide being relied upon repeatedly and almost exclusively for weed control in fallows... An additional range of single and double-knock treatments have been evaluated for fallow control of fleabane across Qld and NSW... Specifics of rate and product have been deleted from the above figure as NONE of the herbicides listed are registered for the control of fleabane...
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Catalogue: GRDC Updates
Windmill grass (WG) and flaxleaf fleabane have become major weeds of cropping in many parts of Australia... Figure 6: Benefit of double-knock over single herbicide applications on fleabane control - knocks 7 days apart (DEEDI 2009) An additional range of single and double-knock treatments have been evaluated for fallow control of fleabane across Qld and NSW... The results in Figure 8 show the mean level of control of some of the key herbicides over the 4 trials...
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Catalogue: GRDC Updates
The cropping area west of the Warrumbungle ranges has many challenges, in the form of herbicide resistance... Trial results showed that inter-row spraying of Gramoxone in wide row chickpeas could be useful, if it were to be registered for this use. . The same principles apply to canola which enables the inclusion of atrazine trifluralin, Avadex Xtra and Dual Gold... Double knock on glyphosate resistant plants: In March 2007, the first experiment (at Bellata) conducted on glyphosate resistant barnyard grass investigated basic combinations of glyphosate followed by either paraquat or Spray...
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