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.

The tool displays :

• In graphic form: the evolution of the daily probability of capture up to D+7, for a given commune
• In map form: probability levels over the whole territory, for a given date (up to D+7).

The alert threshold is defined by the model's algorithms. Above this threshold, the probability of capturing the pest increases significantly.

The rapeseed stem weevil flight prediction tool was developed thanks to the Produire project of the Cap Protéines program, and received support from the French Ministry of Agriculture and Food Sovereignty as part of the recovery plan.

The terminal bud weevil flight prediction tool was developed thanks to the Adaptacol² project and received support from the Casdar.