Seedling Damping-off of Carrot Caused by Rhizoctonia solani AG-4 HG-I

Abstract

Seedling damping-off of carrot (Daucus carota L.) was occurred in Ibaraki Prefecture, Japan from August to September, 2008. The causal agent was identified as Rhizoctonia solani anastomosis group (AG) -4 homogeneous group (HG) -I. To the best of our knowledge, this is the first report of this subgroup of R. solani AG-4 as the pathogen of seedling damping-off of carrot in Japan.