19th Meeting of the Expert Working Group on Resistance to Plant Protection Products

Paris, 2024-10-01/03

 

 

The Expert Working Group (EWG) on Resistance to Plant Protection Products met in Paris at the European and Mediterranean Plant Protection Organization (EPPO), on 2024-10-01/03. Six new members were welcomed following the Call for experts launched by EPPO in June 2024.

 

Amaranthus palmeri

Courtesy: Jordi Recasens

Tetranychus urticae 
Courtesy: Matheus de Paula Gomes

Helicoverpa armigera
Courtesy: Pascal Reynaud

 

The EWG continued working on the EPPO Database on Resistance Cases . The aim of this database is to share information among the responsible authorities for registration of plant protection products across the EPPO region and between authorities and the agrochemical companies which apply for registration of their products. The database is publicly available since September 2021. All EPPO members countries are invited to appoint an official contact point and provide information about resistance cases in their respective countries to the EPPO Secretariat through this contact point. So far 27 EPPO member countries have nominated a contact point and most of them entered resistance cases in the database.

 

In addition to the 811 resistance cases already validated in previous EWG meetings (and visible in the Database for all users), this year the EWG considered 210 new (or updated) cases and 202 of them were validated. The cases validated at the meeting will soon be visible for all users of the Database. The cases which could not be validated at the meeting will need further work or consideration by the countries that proposed them.

 

Expert Working Group

 

A regular topic on the agenda is the update from Panel members on current and new resistance cases and management strategies. Country presentations were made by Austria, France, Germany, Greece, Ireland, Italy, the Netherlands, Portugal, Sweden and the United Kingdom, followed by information from the Resistance Action Committees (RACs). The industry representatives informed the Panel about the new developments and recent activities of:

  • the Fungicide RAC (FRAC)
  • the Insecticide RAC (IRAC)
  • the Herbicide RAC (HRAC)

 

The EWG also discussed the progress of a new draft Standard on generating sensitivity data for PPPs resistance monitoring and the plan for an EPPO Workshop on Resistance to PPP.

 

The EPPO Expert Working Group on Resistance to PPP will next meet on 2025-10-01/03 in Lisbon.