인삼 연작지 수확 경과년수에 따른 토양화학성 및 뿌리썩음병 발생율의 변화

Abstract

To study the cause of the injury by continuous cropping and the countermeasure for reduction on it's injury in ginseng cultivation by the period passed since post-harvest, and previous soil management for planting, the injury by continuous cropping was investigated from 2004 to 2005 at the continuous cropping field of National Institute of Crop Science in Jungpyong county, Korea. There was negative correlation between the ratio of survived root and the period passed since post-harvest. The ratio infected by Cylindrocapon destructans and Fusarium spp. in root was about 81~95% at continuous cropping field that passed by 3~4 years since post-harvest. Though the previous soil management for planting was somewhat effective to increase the ratio of survival root, but which was not effective to protect the infection of Cylindrocapon destructans and Fusarium spp. in root. There was no significant difference in reducing rotted root between management and nonmanagement. When previous soil management for planting was programed, it should be considered that Cylindrocapon destructans was detected at continuous cropping field that passed by above 10 years after harvesting.