Inhibition of phytopathogenic fungi by extracts from medicinal plants in Jordan

Investigation of the inhibitory effect of extracts from 4 medicinal plants were carried out against four plant pathogenic fungi: Rhizoctoria solani, Fusarium oxysporum, Vetricillum sp. and Penicillium sp. The highest growth inhibition of all fungi was observed with Varthemia iphionoides (E4), which gave (44.8%), of inhibition for Verticillium sp., followed by Rhizoctronia solani (42.9%), Fusarium oxysporum (42.7%) and Penicillin sp. (18.2%). All extracts showed the highest inhibitory effect against the plant fungi at 1000 ppm except the extract from Phlomis viscose (E2) which showed the highest inhibitory effect at 500 ppm.