In Vitro effects of clove and turmeric extracts controlling crucifer pathogens

Clove (Syzygium aromaticum) and turmeric (Curcuma longa) extracts were tested against crucifer pathogens using soaking method. Both extracts showed inhibitory effects on the pathogens. The results of antifungal activities revealed that clove extract was indicated the minimum inhibitory concentration (MIC) of Alternaria brassicicola and Fusarium oxyporum at 1900 ppm and 2300 ppm respectively. While turmeric extract was indicated at 7500 ppm and 13200 ppm respectively. Whereas, the lower MIC at 470 ppm and 230 ppm of clove and turmeric extracts respectively were observed with Xanthomonas campestris inhibitions. Microscopic monitoring of fungal growths on PDA supplemented with the extracts showed abnormal conidia and malformations as swollen, often septated and pale color hypha.