Decision on approval of prosulfuron Applications for the amendment to the approval of active substances in GB are regulated under assimilated Regulation No 1107/2009. Applicant: Syngenta Crop Protection AG Substance: Prosulfuron â a herbicidal active substance for the control of a range of broadleaf and grass weeds in maize and sweet corn. HSEâs conclusion on prosulfuron was published on 30 August 2024 and concluded that the restriction âuse should be limited to one application every 3 years on the same field at a maximum dose of 20g active substance per hectareâ can be removed from the approval. View the published conclusion: Active substance amendments table HSE referred its conclusion and intended decision to GB competent authorities, as required under the Agency Agreements between HSE, Defra and the individual devolved governments. Decision: Prosulfuron can remain approved as a candidate for substitution in GB, for use in plant protection products, without the requirement for the restriction above. The approval conditions of prosulfuron have now been updated in the GB Pesticides Approvals Register. Plant protection products containing prosulfuron can be authorised in GB, in accordance with the requirements of assimilated Regulation No 1107/2009. | 
