Australia
September 26, 2013

Are the wheels falling off the concept of herbicide rotation to manage resistant weeds?

In recent years new ryegrass herbicides have been released, giving us some hope that there will be a herbicide solution to our problems. Imagine if your ryegrass was resistant to one of these fantastic new herbicides the first time you used it. We have seen this in the past and we may be about to see it again.

AHRI researcher Dr Roberto Busi has previously shown us that low herbicide rates is not good practice as it can lead to faster resistance evolution for some herbicides. Roberto took some of the resistant ryegrass from his low dose studies and exposed them to some of the alternative new herbicides. The alarming result was that the ryegrass was resistant to the alternative herbicides even though this ryegrass had never been exposed to these herbicides previously.

Click here to find out how.

AHRIinsight is compiled by Peter Newman, Brogan Micallef and Lisa Mayer.

Website: http://www.ahri.uwa.edu.au/

Published: September 26, 2013