Effect of 0–200 ppm (a) Propyl Propane Thiosulfonate (PTS) and (b) Propyl Propane Thiosulphonate (PTSO) on the in vitro (2% wheat agar medium) on the radial growth rate (n = 6) of an isolate of F. graminearum, F. langsethiae and F. verticillioides. Vertical bars indicate the standard error of the means. For PTS effects on growth: F. graminearum: H (4, N = 30) = 26.612, p < 0.001; F. langsethiae: H (4, N = 30) = 27.647, p < 0.001; F. verticillioides: H (4, N = 30) = 26.522, p < 0.001; for fungal species: H (2, N = 90) = 3.176, p = 0.2004. For PTSO effects on growth: F. graminearum: H (4, N = 30) = 27.451, p < 0.001; F. langsethiae: H (4, N = 30) = 27.877, p < 0.001; fungal species: H (2, N = 90) = 12.926, p = 0.002.