Inhibition Effects of Plant Extracts against Fusarium oxysporum

The fungistasis of 27 plant ethanol extracts were tested with Fusarium oxysporum f.sp.cucumerinum Owen,F.oxysporum f.sp.niveum and F.oxysporum f.sp.melonis under separate cultivating conditions.The effects of 4 plant extracts on potted plants against cucumber blight in greenhouse were tested,respectively.The extracts of the plants have obvious inhibitive function against the 3 kinds of pathogen,especially the extracts of Euphorbia fischeriana Steud,Chelidonium majus L.,Agastache rugosa,Cinnamomum cassia,Phellodendron amurense and Solanum nigrum have better resistance.Their inhibitory rate can be up to 70%.The potted test in vivo showed that the extract of E.fischeriana had 70.54% preventive effect and 57.89% curative effect.The extract of C.cassia had good