Step 1: Select state/territory

Step 2: Select weed species

Step 3: Select mode of action herbicide group

Step 4: Select sub-category (if applicable)

Refer to the Mode Of Action page to see other product examples.

Step 5: Select year (include previous years)

Select a different year to see the progress of resistance

Weed Resistance Key

Resistant weeds identified
Resistance developing
No testing data available
Results are based entirely on seed and plant tests that have been submitted to Charles Sturt University and Plant Science Consulting. If no seed or plants have been tested in an area, then no data is available, and does not guarantee the absence of resistant biotypes in that area.