Green pepper seedlings using peat-moss pots were transplanted to fields in Iwate and Ibaraki Prefectures, and the effect on growth and the occurrence of mosaic disease caused by soil transmission of Pepper mild mottle virus (PMMoV) were examined. There was no big difference in the plant length and the amount of fruits when the seedlings using peat-moss pots and the usual seedlings were compared. The occurrence of mosaic disease two months after transplanting, which is thought to be caused by soil transmission, showed 0% in the transplants of seedlings using peat-moss pots, though 7% in the transplants of usual seedlings. This result indicates that transplanting green pepper seedlings using peat-moss pots is effective to control the soil transmission in fields infested with PMMoV.
