Resistance Surveys

WA’s herbicide resistance status

The herbicide resistance survey assesses the state of herbicide resistance to commonly used herbicides in the Western Australian wheatbelt for important weeds. Surveys were conducted over the last 20 years to determine the frequency and extent of herbicide resistance in crop weeds. Weed seed samples collected were screened for resistance to commonly used herbicides at recommended field rates.

Read comprehensive information on Herbicide Resistance Surveys summary April 2022 (PDF).

Find out more about Crop Contamination survey research.