commiss direct ec juli amend direct ec establish condit harm organ plant plant product object list annex council direct eec introduc move commun protect zone thereof trial scientif purpos work variet select commiss european commun regard treati establish european commun regard council direct eec decemb protect measur introduct commun organ harm plant plant product spread commun amend commiss direct ec articl thereof pursuant provis direct eec harm organ list annex ii singli relev plant plant product list annex ii direct introduc spread movement commun protect zone thereof pursuant direct ec plant plant product object list annex iii introduc commun protect zone thereof plant plant product object list annex iv direct introduc move commun protect zone thereof relev special requir annex met plant plant product object list annex part direct ec come countri introduc commun compli standard requir laid direct accompani offici phytosanitari certif ensur complianc inspect offici basi complianc provis articl direct provid rule appli introduct movement harm organ plant plant product object trial scientif purpos work variet select subject condit determin commun level commiss direct ec laid condit satisfi case introduct movement order ensur risk harm organ spread member state import plant stolon tuber form speci solanum hybrid intend plant work variet select gene conserv scientif research purpos commiss decis eec amend decis ec laid condit satisfi case introduct movement plant order ensur risk harm organ spread decis eec amend expir decemb incorpor condit laid decis direct determin condit satisfi case introduct movement plant order ensur risk harm organ spread condit account develop test method diseas potato inform organ harm potato test order detect presenc measur provid direct accord opinion stand committe plant health adopt direct articl direct ec amend articl replac member state ensur activ trial scientif purpos work variet select hereinaft refer quot activ quot involv harm organ plant plant product object pursuant articl direct eec hereinaft refer quot materi quot applic submit respons offici bodi prior introduct movement member state relev protect zone thereof materi annex iii part text ad section iv plant stolon tuber form speci solanum hybrid intend plant plant materi subject therapi procedur laid fao ipgri technic guidelin unit plant materi therapi procedur carri point subject index procedur plant materi includ index plant held approv facil quarantin contain condit laid annex plant materi intend approv offici releas held condit conduc normal cycl veget growth subject visual inspect sign symptom harm organ includ relev harm organ list direct eec potato yellow vein diseas arriv subsequ regular interv senesc period index procedur index procedur refer point follow technic provis set point order detect harm organ bacteria clavibact michiganensi smith davi al ssp sepedonicu spieckermann kotthoff davi al pseudomona solanacearum smith smith virus viru organ andean potato latent viru potato black ringspot viru potato spindl tuber viroid potato yellow alfamoviru potato viru andean potato mottl viru common potato virus includ yn yc potato leaf roll viru case true seed potato index procedur carri order detect virus viru organ list plant materi subject visual inspect refer point sign symptom harm organ observ subject investig includ test determin ident harm organ caus sign symptom technic provis refer point bacteria tuber test heel end tuber standard sampl size tuber procedur appli conveni sampl tuber young plant cut includ micro plant test lower section stem root unit plant materi test progeni tuber stem base tuber form speci normal cycl veget growth test refer point recommend materi refer point test method clavibact michiganensi smith davi al ssp sepedonicu spieckermann kotthoff davi al commun method set annex council direct eec oj materi refer point test method appli materi refer point test method pseudomona solanacearum smith smith interim test scheme set annex commiss decis order replac quarantin procedur pseudomona solanacearum smith smith establish european mediterranean plant protect organ eppo materi refer point test method appli virus viru organ potato spindl tuber viroid minimum test veget materi tuber young plant cut includ micro plant includ serolog test flower list harm organ potato spindl tuber viroid biolog test materi test neg serolog test potato leaf roll viru serolog test minimum test true seed serolog test biolog test serolog test retest proport neg sampl test borderlin result method highli recommend serolog biolog test refer point glasshous grown plant sampl posit stem includ young fulli expand leaflet top stem older leaflet midwai posit stem sampl system infect case serolog test bulk leaflet separ plant bulk rate valid method leaflet stem bulk make sampl plant case biolog test maximum bulk plant inocul minimum duplic indic plant indic plant biolog test refer point list european mediterranean plant protect organ eppo offici approv indic plant shown detect virus materi directli test releas quarantin ey index progeni test ey releas tuber releas problem system infect potato spindl tuber viroid materi glasshous grown plant test establish prior flower pollen product test tuber sprout vitro plant small seedl regard preliminari test sampl fulli expand leaflet top stem plant materi test grown temperatur prefer temperatur higher hour photo period test radioact radioact label cdna rna probe return page silver stain rt pcr maximum bulk rate probe return page higher bulk rate valid articl member state bring forc law regul administr provis compli direct januari immedi inform commiss thereof member state adopt provis refer direct accompani refer time offici public procedur refer adopt member state member state immedi commun commiss provis nation law adopt field cover direct commiss inform member state thereof articl direct enter forc dai public offici journal european commun articl direct address member state brussel juli commiss franz fischler member commiss oj oj oj oj oj