A fungicidal composition containing a fungicidally effective amount of a compound of Formula I, 4-((6-(2-(2,4-difluo-rophenyl)-1,1-difluoro-2-hydroxy-3-(5-thioxo-4,5-dihydro-1H-1,2,4-triazol-1-yl)propyl)pyridin-3- yl)oxy)benzonitrile for use on fungal diseases of cereals. Additionally, this disclosure concerns a fungicidal composition containing (a) a compound of Formula I, 4-((6-(2-(2,4-difluorophenyl)-1,1-difluoro-2-hydroxy-3-(5-thioxo-4,5-dihydro-1H-1,2,4-triazol-1- yl)propyl)pyridin-3-yl)oxy)benzonitrile and (b) chlorothalonil, for control of fungal diseases of cereals.