council direct decemb control potato wart diseas eec council european commun regard treati establish european econom commun articl thereof regard propos commiss regard opinion european parliament regard opinion econom social committe potato product occupi import place commun agricultur potato yield constantli threaten harm organ protect potato cultiv harm organ product capac maintain agricultur product increas protect measur prevent introduct harm organ individu member state limit effect organ control simultan method commun prevent spread organ harm potato synchytrium endobioticum schilb perc pathogen agent cryptogam quot potato wart quot diseas diseas occur member state limit sourc infect exist commun perman risk potato cultiv commun effect measur control diseas prevent spread order erad harm organ minimum provis adopt commun member state adopt addit stricter provis potato varieti resist race organ plai import role safeti zone surround contamin plot prime import gener interest publish period list varieti determin presenc contamin resist varieti appear appli method member state rais object adopt direct articl direct concern minimum measur member state control potato wart diseas prevent cryptogam diseas spread articl occurr synchytrium endobioticum schilb perc pathogen agent potato wart diseas record member state demarc contamin plot safeti zone larg ensur protect surround area oj plot regard contamin symptom potato wart diseas found plant plot articl member state provid potato tuber haulm contamin plot treat harm organ destroi longer determin place contamin tuber haulm batch contamin tuber haulm found treat articl member state provid contamin plot potato grown plant intend transplant grown store ground articl member state provid safeti zone potato grown varieti resist race synchytrium endobioticum found contamin plot potato varieti regard resist race synchytrium endobioticum react contamin pathogen agent race danger secondari infect articl member state revok measur control potato wart diseas prevent spread synchytrium endobioticum longer found present articl member state prohibit hold cultur synchytrium endobioticum articl member state authoris derog measur refer articl scientif purpos test select work provid derog prejudic control potato wart diseas creat risk spread diseas articl member state adopt addit stricter provis requir control potato wart diseas prevent spread articl member state commun commiss januari year list varieti potato accept market found offici investig resist synchytrium endobioticum state race varieti resist commiss ensur list resist varieti base commun member state publish year februari articl member state ensur contamin synchytrium endobioticum resist potato varieti organ determin method member state rais object articl member state bring forc measur compli direct year notif forthwith inform commiss thereof articl direct address member state brussel decemb council presid lun