In vitro evaluation of plant-extracts activity on two tomato pathogenic fungi in Togo

Abstract

The effects of plant-based formulation on two common fungi of tomato were carried out in vitro. A total of five concentrations of the formulation: 0.2, 0.4, 0.6, 0.8 and 1% were tested using agar dilution and agar diffusion methods. Significant antifungal effects were observed. The plant-based extract formulation was more effective with the agar dilution method in comparison to the diffusion one and also depend on the higher concentrations. The antifungal effects decreased with the incubation time and a high effect was recorded after three days of incubation with mycelial growth inhibition from 63.60 to 77.76% and 80.08 to 100% for Alternaria solani, and from 47.72 to 74.83 and 78.8 to 100% for Fusarium oxysporum, with agar dilution and diffusion methods, respectively. Keywords: Tomato, collar fungi rot, plant extracts, Alternaria, Fusarium, control.