European Canker (Neonectria ditissima) is a ubiquitous fungus that causes significant damage to apple trees in particular, though it can also affect pear trees. Since it can infect trees in almost all environmental conditions, especially in winter and fall, it is extremely difficult to control. In cases where saplings are infected, removing the trees is often the only option. The fungus destroys the outer layer of bark down to the wood, resulting in the section of branch or trunk dying off. If the trunk is affected, the damage is often irreversible.

During the workshop, around 30 scientists, tree growers, and consultants from across Europe and New Zealand discussed different approaches to combating and controlling the fungus. Among other things, selecting for new, highly tolerant apple varieties could play an important role in the future of managing European Canker.

Dr. Peter Braun, Professor of Pomology at Hochschule Geisenheim University and the workshop’s organizer, offers a positive summary of the event: “The workshop at Hochschule Geisenheim University has significantly advanced the international exchange of knowledge in this field and will form the foundation for the development of joint strategies for further research into this economically important harmful fungus.”