The guide 'Guidance on the technical requirements for the section Fate and Behaviour in the Environment' is designed as a resource for applicants for the authorisation of a plant protection product in Belgium. This document provides practical recommendations for the risk assessment regarding the fate and behaviour in the environment. The guide refers to the relevant legislation and guidelines, gives instructions for preparing zonal application dossiers, and clarifies the national approach for Belgium. In no event does the guide replace the prevailing legislation.