2020 年 67 巻 1 号 p. 27-29
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.