commiss decis amend decis eec author feder republ germani restrict market seed propag materi varieti agricultur plant speci german text authent eec commiss european commun regard treati establish european econom commun regard council direct eec septemb common catalogu varieti agricultur plant speci amend regul eec articl thereof articl direct eec seed propag materi varieti agricultur plant speci offici accept member state accord provis direct principl subject market restrict relat varieti commun articl direct member state author applic prohibit market seed propag materi varieti feder republ germani author commiss decis eec prohibit market seed propag materi varieti agricultur plant speci includ potato varieti author base respect potato varieti avanti preval primura procura assess cultiv germani harm point view plant health cultiv varieti potato articl direct eec technic examin risk involv similar case shown cultiv offici certifi seed potato varieti harm cultiv varieti cultiv progeni author longer justifi aforement provis direct eec result trial carri germani show varieti avanti preval highli suscept viru infect expect earli late varieti produc result germani respect qualiti cultiv correspond obtain compar varieti accept articl case abovement direct result trial respect varieti primura earli varieti varieti procura averag suscept viru infect consid conclus effect author grant respect varieti avanti preval confirm ground author grant respect varieti primura procura withdrawn decis eec amend measur provid decis accord opinion stand committe seed propag materi agricultur horticultur forestri adopt decis articl articl decis eec varieti delet primura procura articl decis address feder republ germani brussel commiss fran andriessen vice presid oj oj oj