Research on possibilities of utilization of chosen Brassicaceae plants in protection of cucumber against damping-off caused by Rhizoctonia solani Kuhn and Fusarium culmorum (W.G. Smith) Sacc
2005
Burgiel, Z.J.,Akademia Rolnicza, Krakow (Poland). Katedra Ochrony Roslin
The aim of the work was to determine the usefulness of dried leaves of savoy cabbage, red cabbage, horse radish and fringed cabbage in protection of cucumber against damping-off caused by fungi Rhizoctonia solani and Fusarium culmorum. In the laboratory experiments, pathogens were grown on PDA containing dried leaves (3g/100 cubic cm) and in atmosphere containing volatile substances evolved from plant material. The addition of radish horse leaves into PDA caused total inhibition of R. solani development. Remaining plants were also characterized by high fungistatic activity (percent of growth inhibition about 85 percent). F. culmorum was less sensitive. The horse radish leaves showed the strongest activity (65 percent), weakest in combination with fringed cabbage leaves (38.9 percent). The similar regularity in the case of fumigation activity was observed. The effectiveness of dried leaves in protection of cucumber against damping-off was confirmed in greenhouse experiment. The amendment of soil inoculated with R. solani in dose 2 g per 500 cubic cm of soil significantly increased the number of cucumber sprouts compared to the control. In the experiment with F. culmorum only in combination with horse radish and red cabbage leaves significant action was observed
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