Background : Ginseng (Panax ginseng C. A. Meyer) is a multi-year-cultivated plant that causes many insects and disease damage during the growing season. The Ginseng Rain-sheltered Shade House is one of the efficient cultivation techniques as reducing the damages caused by natural disaster such as blight, high temperature & humidity, dry, and heavy rain & snow. This study was conducted to investigate the growth characteristics of 4-years-old ginseng using rain-sheltered shade house suitable shading materials for the Gyeongsangbuk-do. Methods and Results : The rain-sheltered shade house shading materials were PE film with layered polyethylene net 90%, Light diffusion film with layered polyethylene net 75%, blue-white duplicated film. In order to determine proper shading materials of the rain-sheltered shade house, ginseng growth characteristics such as plant length, stem diameter, leaf length, root length and root diameter were investigated at 4-years-old ginseng. As a result, the evaluations of aerial part growth by measurements were good in the following order: PE film + polyethylene net 90%, Blue-white duplicated film and light diffusion film + polyethylene net 75%. The evaluations of root weight by measurements were heavy in the following order: Blue-white duplicated film, PE film + polyethylene net 90% and light diffusion film + polyethylene net 75%. The net photosynthetic rate was higher in blue-white duplicated film than other shading materials treatments during growth season including summer high-temperature period. Conclusion : In the 4-years-old ginseng cultivation in Gyeongsangbuk-do using the rain-sheltered shade house, aerial part growth in PE film + polyethylene net 90% was better than other shading materials. In addition, root weight in Blue-white duplicated film was heavier than other shading materials. It will be possible to know which shading material is the most suitable for Gyeongsangbuk-do area after further growth.

Background : The area of ginseng cultivation has nearly exhausted in the main ginseng growing area in Korea but virgin fields need for ginseng cultivation due to continuous cropping injury. To count for the decrease of the virgin fields of ginseng cultivation, technical improvement to increase, or maintain the amount of harvest are necessary in ginseng cultivation. The Ginseng Rain-sheltered Shade House is one of the efficient cultivation techniques as reducing the damages caused by natural disaster such as blight, high temperature & humidity, dry, and heavy rain & snow. However a soil description needs to be developed to reduce the period of re-cultivation because ginseng has to be cultivated at the only one ginseng rain-sheltered house without soil or cultivation change. Methods and Results : This study was carried out in the ginseng rain-sheltered house where ginseng had cultivated and harvested one time. Each section of Cultivation of sudan grass+flooding, rice straw+flooding, and flooding was covered with vinyl and then, all areas were solarized through the summer season. The soil temperature was inspected at 5cm, 10cm, 15cm, and 20cm below ground. As a result, the soil temperature of the place with vinyl covered and solarized was approached to 40℃ regularly during the period of high temperature in July and August. After the solarization, the inspection result of Cylindrocarpon destructans spore density checked by Real time PCR was that C. destructans spores were not found at the place where sudan glass+flooding and rice straw+flooding were used. However, the detected number of C. destructans spores in the inspection condition was roughly 9 at the soil samples from the fields which were flooded and solarized, and 33 at those from the repeatedly cultivated fields. The evaluations of aerial part growth by measurements were good in the following order: Sudan grass+flooding, rice straw+flooding, and flooding. Conclusion : The purpose of this study was to reduce the period of ginseng re-cultivation in a ginseng rain-sheltered shade house. The incidence rate of the pathogens distantly decreased by the treatments of sudan glass + flooding, rice straw+flooding, and solarization.