Alternaria blight caused by Alternaria brassicae is a major disease of rapeseed in Nepal so, an experiment was established at National Oilseed Research Programme in RCBD with eight treatments and each treatment replicated thrice including bio-agents and fungicide with control plot for two consecutive seasons 2008 and 2009. Among them, mixing of Trichoderma viridae @ 1Og/ kg well decomposed compost and incorporated in the soil at the rate of 10 ton/ha was found effective in controlling the disease appeared on leaves..................

Alternaria blight caused by Alternaria brassicae is a major disease of rapeseed in Nepal so, an experiment was established at National Oilseed Research Programme in RCBD with eight treatments and each treatment replicated thrice including bio-agents and fungicide with control plot for two consecutive seasons 2008 and 2009. Among them, mixing of Trichoderma viridae @ 1Og/ kg well decomposed compost and incorporated in the soil at the rate of 10 ton/ha was found effective in controlling the disease appeared on leaves..................