Abstract Different fungicides belonging to the group known as ergosterol biosynthesis inhibitors (EBI) were applied in oil‐water mixtures and their effects compared with those of treatments with benomyl (150g a.i./ha) and propiconazole (80 and 100 g a.i./ha), the standard products hitherto used to control Sigatoka disease in Cuba, in randomized block experiments and aerial treatments in commercial fields. Soil treatments with granulated formulations of triadimenol (0.5, 0.75 and 1 g a.i./plant) at 3 and 4 month intervals were compared with propiconazole and benomyl foliar treatments. Propiconazole applied at a rate of 80g a.i./ha was as effective as an application of 100 g a.i./ha and caused a strong inhibition of the growth of the germ tube of the ascospore as well as of pseudothecia, spermogonia and sporodochia production in mature spots. Hexaconazole and triadimenol (applied at a rate of 100g a.i./ha), tridemorph (450g a.i./ha) and aldimorph (662 g a.i./ha) were as efficient as propiconazole and benomy...