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How do you prevent the spread of glyphosate resistance in annual ryegrass? Catherine Borger, DAFWA Paper 27KB Present...

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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...