| Tested with 24 kinds of plant extracts,the biological activity of the extracts on several plant pathogens were detected. The inhibitory effect of Camellia japonica, Chimonanthus praecox，Rubus pungens var. oldhamii and Albizia kalkora (Roxb.)Prain extracts were best and they had more than 80% inhibiting rates to one tested pathogens at the concentration of 5 mg/mL. The inhibition rate of Camellia japonica extracts was better than that of the other plant extracts to three tested pathogen.which was above 80% to Valsa mali Miyabe et Yamada and Fusarium graminearum. The Camellia japonica, Chimonanthus praecox, Rubus pungens var.oldhamii and Albizia kalkora (Roxb.)Prain extracts contained agricultural antibacterial composition and had wide antimicrobial spectrum.which could be used as non- pollution botanical fungicides. |
