Changes made by 89/589/EEC: Commission Decision of 8 November 1989 authorizing the Federal Republic of Germany and the Hellenic Republic to restrict the marketing of seed of certain varieties of agricultural plant species (only the German and Greek texts are authentic)
EU Decision 1989/589
No changes made by 89/589/EEC: Commission Decision of 8 November 1989 authorizing the Federal Republic of Germany and the Hellenic Republic to restrict the marketing of seed of certain varieties of agricultural plant species (only the German and Greek texts are authentic) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.