Effect of products on phytophthora strain EU46

In 2023, the new phytophthora strain EU46 emerged. Research by Syngenta in the laboratory showed that this strain is sensitive to mandipropamid, the active substance in REVUS® and PERGOVI®.

To test the sensitivity of a crop, Wageningen University (WUR) conducted a test. For this they used EU46 isolates from 2023, from various practice fields in the Netherlands. The potatoes were sprayed on May 28, and a solution containing traces of EU30 was sprayed on May 46. A different isolate was used per row, for a total of three isolates from different locations. These isolates all showed exactly the same picture.

The conclusion is simple and clear: the phytophthora strain EU46 is controlled by mandipropamid, the active substance in REVUS® and PERGOVI®.