Abstract:Rapeseed crops belong to the family Cruciferae and genus
Brassica.
Alternaria blight of rapeseed is caused by
Alternaria brassicae (Berk.) Sacc. is a well-known destructive disease worldwide. An experiment was conducted
in vitro to evaluate the effectiveness of fungicide combinations at each with three different doses against
Alternaria brassicae.
Among six new fungicides combinations, Mancozeb (@ 0.15%, 0.20% and 0.25%), Mancozeb + Carbendazim (@ 0.15%, 0.20% and 0.25%), and Mancozeb + Azoxystrobin (@ 0.25%, 0.05% and 0.1%) fungicides were significantly superior to completely check (0.00 mm) the mycelial growth of Alternaria brassicae followed by Chlorothalonil (@ 0.2%, 0.25% and 0.3%) Propineb (@ 0.2%, 0.25% and 0.3%) and Carbendazim (@ 0.15%, 0.20% and 0.25%) fungicides were also significantly reduced the mycelial growth of Alternaria brassicae at all three different doses of fungicides.