Abstract: Replanting problem is serious for the sustainable production of strawberry under continuous cropping. Extracts from 125 species of medicinal plant materials were screened against pathogens of Rhizoctonia solani, Fusarium oxysporum, and Verticillium dahliae that caused strawberry replanting problem in agar plates. Among them, 5 plants of Eugenia caryophyllata, Ligusticum sinence, Stemona japonica, Rhus chinensi and Sophora flavescens significantly inhibited the growth of the pathogens. Single or combinations of these 5 medicinal herds were evaluated for control strawberry replanting problem in pot trials and greenhouse. Results showed that five herbs significantly enhanced strawberry growth, reduced disease index and increased the yield compared with untreated control in pot trial. Four herbs significantly promoted growth of strawberry seedlings, disease index decreased by 13.9-39.5 and death rate of 22.4%-33.2%, increased the yield by 32.6%-33.8% compared with non-herb treatment in greenhouse trials. Based on the cost, disease control efficacy and yield promotion, the equal mixture of Ligusticum sinence and Sophora flavescens was suggested to application in the management of strawberry replanting problem in China.

Key words: Medicinal herbs, Replanting problem, Strawberry, Soil amendments