Infection of Potted Hydrangea by Acidovorax valerianellae Associated with Bacterial Leaf Spot During Field Cultivation

Abstract

The infection of potted hydrangea by Acidovorax valerianellae during field cultivation was investigated. Consequently, the disease developed in potted hydrangea cultivated in the field, but not those in a greenhouse. Moreover, A. valerianellae was isolated from inside the flower bud just after cultivation in the field. The results suggest that A. valerianellae infected potted hydrangea during cultivation in the field.