Abstract: In the study, the allelopathy of the ethanol extract of the root of parsley on Fusarium oxysporiumf. sp. cuc- umeris was studied by growth rate method.The result showed that the ethanol extract of the root of parsley inhibited the growth of Fusarium oxysporiumf. sp. cucumeris significantly within the range of experimental concentration except the con - centration of 1% in 120 and 132 h, and its highest inhibitory rate was 42.31%,or lowest rate was 12.22%;the ethanol extract of the rhizosporic soil of parsley inhibited the growth of Fusarium oxysporiumf. sp. cucumeris significantly at higher concentrations( from RS100% to RS60% ), and the largest inhibitory rate was 94.3%.The higher concentration, the bet - ter allelopathic effect, whichwas more than that of corresponding extract of the nonrhizosphere, adding up to 49.02%; the lower concentration( RS40% and RS20%) of the ethanol extract of the rhizosperic soil of parsley promoted the mycelial growth lightly, but whichwas less than that of corresponding extract of the nonrhizosphere obviously.There was a tendency that inhibitory rate of ethanol extract of root agaist Fusarium oxysporiumf.sp. cucumeris dropped down with decreasing concentration and prolong time.

Key words: The root of parsley, Rhizosperic substance, Ethanol extract, Fusarium oxysporiumf. sp. cucumeris, A- llelopathy

CLC Number: 

• S436.421.13

• S636.3