Phytophthora clone EU-13 was already known for being aggressive and difficult to combat. In recent years, two new clones have been on the rise in northwestern Europe: Eu-36 and EU-37.
These clones are supplanting EU-13. The characteristics that caused these two clones to expand has now been researched by Wageningen University & Research. This information allows the combat strategy of phytophthora to be improved.