Changes to Council Directive of 15 July 1991 concerning the placing of plant protection products on the market (91/414/EEC)
EU Directive 1991/414
Made by Council Directive 2005/25/EC of 14 March 2005 amending Annex VI to Directive 91/414/EEC as regards plant protection products containing micro-organisms
From legislation.gov.uk's record of changes, the official one: see it there.