Effect of selected aromatic oils on the development of pathogenic fungi colonizing vegetable seeds in the laboratorial conditions.

Abstract

The goal of this research was to find out effect of the ethereal oils received from tea tree (Melaleuca alternifolia L.) and lavender (Lavandula officinalis L.) on the growth of colonies of Colletotrichum lindemuthianum and Alternaria brassicicola in the laboratorial conditions. The ethereal oil from tea tree did limit the growth of Colletotrichum lindemuthianum and Alternaria brassicicola. In the first case, already 0.5% oil completely limited the colony’s growth of Colletotrichum lindemuthianum, and 1.5% - Alternaria brassicicola. The two other concentrations: 0.5% and 1.0%, although did not completely limited growth of Alternaria brassicicola, still limited it significantly in comparison with the results of check. The use of oil from lavender limited the growth of Colletotrichum lindemuthianum and Alternaria brassicicola in the laboratorial conditions. The best results were received with the higher concentrations of the oil. In the concentrations of 1.0% it stopped the growth of Colletotrichum lindemuthianum completely and 1.5% - Colletotrichum lindemuthianum and Alternaria brassicicola.