[The 35th annual report of the Danish Plant Protection Service, 1986 [potato ring rot, potato wart disease, fireblight, black rust, Dutch elm disease]]

allium cepa avena fatua cacoecimorpha ceratocystis corynebacterium cultivos de invernadero culture de serre cut flowers epichoristodes erwinia exportaciones exportation exports flor cortada fruit crops frutales globodera greenhouse crops importaciones importation imports leptinotarsa ornamental bulbs papa plante ornementale bulbeuse potatoes puccinia quadraspidiotus synchytrium