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Which are the resistance groups of crop protection agents?

Resistance groups of crop protectionCrop protection agents are subdivided in different resistance groups. A resistance group is a group of crop protection agents that function similarly. This concerns both chemical and non-chemical crop protection agents (like natural enemies). 

Preventing resistance 

In order to prevent a crop from developing resistance, is a broad range of crop protection agents is required. That is why they can choose to only stop using an application when at least five resistance groups remain available. When an agent is substituted by an alternative agent from the same resistance group, the number of resistance groups will not reduce.

Overview of resistance groups

An overview of the resistance groups of crop protection agents can be found on the following websites:
  • IRAC (resistance groups of insecticides)
  • HRAC (resistance groups of herbicides)
  • FRAC (resistance groups of fungicides)


Questions about resistance groups of crop protection agents 
Do you have any questions about resistance groups of crop protection agents, or do you have another question about crop protection? Then contact product specialist Jan-Paul de Wit, or ask your question using the form below. We will then contact you as soon as possible, even within 24 hours on working days.



Jan-PaulAbout Jan-Paul de Wit
Jan-Paul de Wit is specialist in Integrated Pest Management. He helps and advices growers on how to improve their crops and how to fight diseases, viruses and pests. He advises on the best products to use so that they optimally match the objectives of the grower, as well as the crop, greenhouse and environment.



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