The lowest level was followed by yeasts and Rhizo-N treatments. There
were considerable differences among the values when yeasts that were used
against cercospora leaf spot as illustrated in Table 1. On the other hand, no
difference was found between the values in case of powdery mildew. Final
determination of disease severity clearly indicated that the sprays by either
yeasts gave the best results in management of the powdery mildew disease. The
efficiency of tested yeasts indicated clear activity of yeasts against powdery
mildew disease compared with Cercospora leaf spot disease. S. cerevisiae, P.
albicans and C. sake gave 76.15, 67.70 and 74.66 % against powdery mildew
disease, while gave 26.06, 21.77 and 52.83% against Cercospora leaf spot
disease, respectively (Table 1).