Management of white rust and alternaria leaf blight of mustard using fungicides.

摘要

Five fungicides (copper oxychloride, aluminium tris, metalaxyl, chlorothalonil and mancozeb) were sprayed to manage white rust (Albugo brassicae) and Alternaria leaf blight (Alternaria brassicae) of mustard during kharif season of 2005 under field conditions (Karnataka, India). Among these sprays, aluminium tris was effective against white rust with minimum mean disease severity of 9.8%, followed by mancozeb with 15.50% compared to the control with 33.2% severity. Mancozeb spray was effective against Alternaria leaf blight with 9.8% disease severity compared to the control with disease severity of 29.4%. Maximum seed yield of approximately 313 kg/ha was recorded when the crop was sprayed with metalaxyl, followed by aluminium tris (239 kg/ha) and mancozeb (233 kg/ha) compared to the control with 174 kg/ha yield.