The Resistance Action Groups (RAGs) are informal, UK-based groups consisting of experts from the Crop Protection Association (CPA) member companies, other representatives from the agrochemical industry, a range of independent organisations, including public-sector research institutes, and the Chemicals Regulation Directorate (CRD) (previously PSD). The groups are completely independent of CRD and work to produce guidance on pesticide resistance issues. There are four autonomous groups dealing with issues relating to weeds, fungicides, insecticides and rodenticides
