Bull. Spec. CORESTA Congress, Jerez de la Frontera, 1992, p. 155, P15, ISSN.0525-6240

The effect of some fungicides in field application against tobacco powdery mildew

VASILAKAKIS C.B.; VEZIRTZOGLOU R.M.
Tobacco Institute, Drama, Greece
In 1986, 1989 and 1990, eighteen fungicides were tested against tobacco powdery mildew (Erysiphe cichoracearum DC) in the field. In 1986, two experiments were established at Drama and Krinides (Kavala), respectively. The chemicals TOPAS 100 EC (PENCONAZOLE), DORADO (PYRIFENOX) and ANVIL or PP 523 (HEXACONAZOLE) were applied in two different rates. All products were tested in foliage sprays, which started 20-23 days after transplantation and they were repeated every 10 days constantly. From the above fungicides : - TOPAS 100 EC, DORADO, SYSTHANE 12.5% EC (MYCLOBUTANIL 12.5%), SYSTHANE 12.5% EC + KARATHANE 25 W.P. (DINOCAP 25%), SCORE 250 EC (DIFENOCONAZOL), EXP 2073 (DINICONAZOLE), EXP 10065 A (BROMUCONAZOLE), RH 7592 5% EC (FENETHANIL), PP 450 12.5% SC (FLUTRIAFOL) and ANVIL or PP 523 provided excellent protection and the degree of infection was zero.-EXP 2328 A, RIMIDIN 4 EC (FENARIMOL 4%) and AFUGAN 29.4% EC (PYRAZOPHOS 29.4%) provided very good protection.-KARATHANE 25 WP, SAPROL 16% EC (TRIFORINE 16%), PALLITOP 48% WP (NITROTHAL ISOPROPYL 48% + METIRAM 3.2%) and BAYLETON (TRIADIMEFON 5%) provided good protection.-BEFRAN 25 AS (IMINOCTADINE TRIACETATE) provided no satisfactory protection. Under the conditions of this experimentation, none of the fungicides tested was phytotoxic.