Principal Forte
Principal Forte is a post-emergence systemic herbicide for maize, designed to control a wide range of grass and broad-leaved weeds. 
Identification
MAPP 20797 Great Britain: Pesticide product number assigned by the UK Health and Safety Executive (HSE) for Great Britain. Products containing macro-organisms are authorised differently.
PCS 06767 Ireland: Pesticide product registration number assigned by the Pesticide Registration and Control Divisions (PRCD) of the Department of Agriculture, Food and the Marine (DAFM), Ireland. Products containing macro-organisms may be authorised differently.
CzR 5866-0 Czech Republic: Pesticide product registration number assigned by the Central Institute for Supervising and Testing in Agriculture (ÚKZÚZ), under the Ministry of Agriculture. Products containing macro-organisms may be authorised differently.
HUN 6700/2408-1/2023 Hungary: Pesticide product registration number is assigned by the Hungarian National Food Chain Safety Office, commonly known by its Hungarian acronym, Nébih (Nemzeti Élelmiszerlánc-biztonsági Hivatal). Products containing macro-organisms may be authorised differently.
ANF 811PC Romania: Pesticide product registration code issued by the Romanian (Autoritatea Națională Fitosanitară (ANF)) which is the official competent authority under the Romanian Ministry of Agriculture and Rural Development. Products containing macro-organisms may be authorised differently.
MDS 18318 Italy: Pesticide product registration number assigned by the Ministry of Health (Ministero della Salute), Italy. Products containing macro-organisms may be authorised differently.
UKSUP 22-01353-AU Slovakia: Pesticide Product registration number assigned by ÚKSÚP (–Ústredný kontrolný a skúšobný ústav poľnohospodársky)
Central Controlling and Testing Institute in Agriculture under the Ministry of Agriculture and Rural Development of the Slovak Republic. Products containing macro-organisms may be authorised differently.
Formulation
UFI and Type
Possible coformulants
Product family
None
Related products
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Always read and follow the instructions on the pesticide label.
Other information
Please cite as:
AERU (2026) Pesticide Formulations Catalogue (PFC): Principal Forte. Agriculture and Environment Research Unit (AERU), University of Hertfordshire, UK. URL: https://sitem.herts.ac.uk/aeru/pfc/Reports/33.htm (Last accessed: 19/09/2026)
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