Management of White Rust (Albugo candida) in Indian Mustard by Fungicides and Garlic Extract

Efficacy of nine recommended and four new fungicides along with garlic extract (based on pooled data of two years) in controlling the white rust disease in vitro and under glasshouse condition is reported. Metalaxyl 8 per cent + mancozeb 64 per cent (0.25%) and azoxystrobin 25 EC (0.1%) were the most effective in controlling disease in-vitro (87.84 and 86.85%) as well as under glasshouse (100 and 100%) respectively. Cymoxanil (8%) + mancozeb (64%) (31.51%), hexaconazole (31.09%), difenoconazole (44.16%), dimethomorph (43.22%) and fosetyl-aluminum (25.29%) (each at 0.1%) were least effective in managing the disease. Trifloxystrobin and kresosim methyl (0.1%) were also effective and significantly at par with the recommended propiconazole and tebuconazole 50 per cent + trifloxystrobin 25 per cent (each at 0.1%). Garlic extract (2%) was significantly superior over the old recommended fungicides.