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Are seed dressings allowed?
Seed dressings which are based on mercury or organo-chlorine compounds are not allowed.
Other substances can be used provided that:
- The treatment is authorised for use in general agriculture in the UK
- The users of such seed can show to the satisfaction of the Certification Committee that they were unable to obtain on the market non-treated seeds of an appropriate variety of the species in question
- Accurate records are kept, containing details of the substances used as a seed dressing

