Soil fungi and nematodes are the major causes of failure of (summer) flowers. In chrysanthemum Verticillium sp., root centipede (Scutigerella maculata) and nematodes are difficult to control and Pythium requires year-round preventative use of pesticides.
The approved pesticides are under pressure due to a stricter admission policy. In addition, the current authorization procedure prevents rapid admission of new pesticides.
Soil steaming is effective but expensive and will only temporarily reduce disease pressure. The problems outlined applies to the entire sector of summer flowers.
The aim of this project is to reduce the use of chemical pesticides against soil pests in a sustainable integrated land information system for controlling endemic suppressive organisms with optimum plant production (soil health). In this project chrysanthemum is chosen as a model.