The inhibition effect of thyme and ajwain extracts on Fusarium solani f. sp. phaseoli

Fusarium root wilt by Fusarium solani f. sp. phsaeoli is one of the most import soil borne diseases of bean crops world-wide. Currently the control of the disease using fungicides is present in most of the technical recommendations, despite the environmental side effects. Therefore, this study was conducted with the aim of identifying healthy control solutions such as the use of plant essential oils and extracts. In this study, the inhibition effect of the essential oils of two plants was investigated in laboratory conditions on the pathogenic fungus. Iperidoine+Carbendazim fungicide, 1.5/1000 was used as a comparison criterion in experiments. The studied features were the speed growth rate of the fungus and the mycelial growth inhibition five concentrations of the studies plants. Results showed that MGI was 58.30 % for thyme in 100 ppm and 41.17 % for ajwain at 100 ppm. The fungicide showed the highest MGI rate at 78.53 % and thyme extracts at the highest concentration was not at the same Duncan group with the fungicide. According to the results, it can be concluded that thyme extract would be an alternative for the common fungicides to control Fusarium root wilt.