1. Risk assessment for flea beetle larvae should be carried out from the second half of November, and repeated during the winter if conditions are mild.
2. The harmfulness of this pest depends on insect pressure and rapeseed growth dynamics.

The tool's integrated decision rule combines these two aspects, making it possible to estimate a risk linked to the plot's agronomic situation, as well as a risk linked to larval pressure.

The tool is not a substitute for field observation, which remains essential for any decision-making process.

The overall risk estimate is associated with a recommendation: whether or not to intervene, and which insecticide to use, depending on the insecticide resistance situation in the département.

This decision rule is available in API format. Log on to the API-Agro platform or contact us for more information.