抄録
In a vegetable seedling nursery in Mie prefecture, Japan, diseases of cabbage plug seedlings were investigated in January to April 1998. Damping off by Pythium megalacanthum de Bary frequently occurred. In some cases Alternaria brassicicola (Schweinitz) Wiltshire involved in damping off, and the damage got large with temperature raise. Downy mildew by Peronospora parasitica (Persoon: Fries) Fries hit leaves, since the highest temperature in each day exceed 15°C. Damping off by other pathogens was very few.
