Potentially interesting how increasing biodiversity in cultivated environments with a range of trees and cover crops can increase resilience, but this thing attacks so many plants that even a biodiverse environment is likely to remain highly vulnerable.
Biodiversity should also include various varieties of the same species. In some cases it's even interesting to have wild varieties of cultivated fruit trees simply for better pollination.
As indicated in the article, there are olive varieties immune to the disease, so it would make a difference.
