To provide a method for controlling bacterial diseases of rice seedlings (specifically, Acidovorax avenae, Burkholderia plantarii and Burkholderia glumae due to Pseudomonas glumae Kurita et Tabei of rice plants) that are important disease injuries in the period of raising seedlings in cultivation of paddy rice by which stable effects of a fungicide comprising a copper salt as an active ingredient are obtained even under frequently occurring conditions.

This method for controlling comprises treating rice seeds with the fungicide comprising the copper salt as an active ingredient and treating a nursery bed for raising the seedlings with (1RS,3SR)-2,2-dichloro-N-[1-(4- chlorophenyl-)ethyl]-1-ethyl-3-methylcyclopropanecarboxylamide (compound B).