Thirteen fungicides, in field application, were used in Krinides Kavala region against tobacco blue mold, in a three-year experimentation (1987, 1988 and 1990). Ridomil MZ 63.5 WP (metalaxyl 7.5% + mancozeb 56%) 1.5 kg/1000m2 (with transplant water) and 250 g/HL (as foliage spray), Ridomil 5G (metalaxyl 5%) 3 kg/1000m2 (broadcast in the row), Ridomil CT 60 (metalaxyl 10% + chlorothalonil 50%) 1 kg/1000m2 (with transplant water) and 250-300 g/HL as foliage spray, Ridomil 20 g. a.i. + CME 151 (Dimethomorph) 50g a.i., EXP 2 50 40 g/HL and Galben-M 8-65 (benalaxyl 8% + mancozeb 65%) 400 g/HL, all of these as foliage spray, provided excellent protection against the disease. Previcur N (propamocarb hydrochloride 72.2%) 7.5 AND 5 1/1000m2 (with transplant water) gave very good results in 1987, but they were not effective in 1988. Patafol (ofurace 6% (Milfuram) + mancozeb 64% ) 25C ABD CME 151 50% 200 and 150 g/HL (as foliage spray), provided very good protection. Manex (maneb 37%) provided good protection, but a systemic infection appeared. Caltan SC (ofurace 6% + folpet 45%), Daconil 75% WP (chlorothalonil 75%) and Euparen Curzate 54.8% (dichlorofluanid 50% + cymoxanil 4.8%) provided no satisfactory protection. Under the conditions of this experimentation, none of the fungicides tested was phytotoxic.