The influence of plant essential oils on in vitro growth of Pectobacterium and Dickeya spp. bacteria 19-29 Małgorzata Schollenberger, Agnieszka Gadomska-Gajadhur, Ewa Mirzwa-Mróz, Damian Kret, Ewa Skutnik, Elżbieta Paduch-Cichal, Mark Gleason