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Background : The cultivation method of ginseng (Panax ginseng C. A. Meyer) has been introduced not only in the existing shading facilities but also in the cultivation method using the rain shelter house. In addition, direct seedling cultivation of ginseng is increasing in order to save labor. Ginseng cultivation area in the northern area is increasing with the disappearance of first planted field. Proper shading method in the northern ares is needed to grow direct grown ginseng using rain forest house.
Methods and Results : Shading method using rain shelter house was Polyethylene film with layered polyethylene net 75%, blue-white duplicated PE film 85%, blue-white duplicated PE film 90%. Plant materials is 5-years-old Ginseng using direct seedling cultivation. In order to select proper shading materials of the rain shelter house in northern area, we investigated photosynthetic properties and growth of 5-years-old ginseng in rain shelter house. The temperature and humidity were slightly different between the traditional conventional shade facility and the rain shelter house, but the light intensity of the shading facility tended to decrease with the passage of time. The difference in shading method in rain shelter house was the highest at polyethylene film with layered polyethylene net 75%. As a result of the growth characteristics of the top part, 90% of blue-green double-sided film showed the greatest growth with 89.8 ± 1.5. The difference in top part between rain shelter house and shading facility is about 23 ㎝.
Conclusion : Although the above growth characteristics of the ginseng shows this tendency, the root growth characteristics of the ginseng must be further observed.
