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paraquat resistance

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Catalogue: GRDC Final Reports
In total, detailed dose response experiments were conducted on 25 populations of annual ryegrass that were suspected of being resistant to glyphosate... Dose response experiments examining populations with different resistance mechanisms showed that the target site mutation in SLR 77 resulted in a population that is less resistant to glyphosate compared with populations containing the reduced translocation mechanism, such as NLR 70... Using a knockdown rotation of the double knock in one year and glyphosate alone in the next year is predicted to result in glyphosate resistance occurring after 26 years for the translocation mechanism and more than 40 years for the target site mechanism (Figure 20)..
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Catalogue: GRDC Final Reports
Glyphosate resistance occurs where there is intensive use of glyphosate, no other effective herbicides and no other weed management tactics used... Continued use of glyphosate will increase the frequency of glyphosate resistance in populations... The project has confirmed that glyphosate resistance is most likely to occur where glyphosate is used intensively and no other effective weed control is practiced...
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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 Final Reports
Australian growers consistently identify herbicide resistance as a major constraint to cropping... We propose that the resistance is primarily due to sequestration of paraquat, limiting paraquat translocation within the plants... Following the recent completion of the 3-year GRDC postdoctoral fellowship, I have been employed by WAHRI as a Research Fellow to continue working on herbicide resistance at the biochemical and molecular levels...
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Catalogue: Ground Cover
Paraquat resistance hits ryegrass.. Dr Qin Yu and colleagues at WAHRI have been testing the paraquat resistant ryegrass to try and establish its mechanism of resistance... Photo: Exploring the mechanisms of resistance: Drs Qin Yu (left) and Shaobai Huang preparing samples of paraquatresistant ryegrass...
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Catalogue: GRDC Updates (West)
Mention of a trade name or company in this publication does not imply endorsement of any product or company by the Department of Agriculture... Wild radish are more likely to have significant numbers of viable pods at this time... Lupin cultivars differ in competitiveness against wild radish...
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Catalogue: GRDC Updates (West)
Mention of a trade name or company in this publication does not imply endorsement of any product or company by the Department of Agriculture... Wild radish are more likely to have significant numbers of viable pods at this time... Lupin cultivars differ in competitiveness against wild radish...
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