This is not intended to be a comprehensive list of organisations or web sites but reflects those resources most often used by members in their work on herbicide resistance and the Plant Protection industry as a whole:


Crop life International

Global federation representing the plant science industry


European Crop Protection Association

Member organisation of plant protection companies in Europe. Acts as the ambassador of the crop protection industry and represents the industry's European regional network


European and Mediterranean Plant Protection Organisation

Promotes the harmonization of phytosanitary regulations and the use of modern, safe, and effective pest controls in the European and Mediterranean region. Responsible for producing guidelines for the testing of the effectiveness of Plant Protection Products.

In particular standard PP 1/213(2) 'Resistance Risk Analysis'


European Weed Research Society

International organization which promotes and co-ordinates scientific research into all aspects of weed science


International Survey of Herbicide Resistant Weeds

Database maintained by Ian Heap and funded and supported by HRAC, the North American Resistance Action Committee and the Weed science Socity of America


Herbicide Resistance Action Committe

Global 'parent' organisation of EHRAC


Other sites of interest:


 Fungicide Resistance Action Committee  


 Insecticide Resistance Action Committee