Ginseng is used a worldwide well-known traditional herb. Recently, it has been reported
that ginseng cultivation using rain shelter house can save workforce and reduce natural
disaster damage compared with traditional shading structure. Especially, ginseng cultivation
using rain shelter house is recognized more advantageous in northern region of Korea
than southern region due to temperature. This study was conducted to investigate the
growth characteristics and yield of ginseng by irrigation set point using rain shelter
house in the northern region of Korea (Gangwon province). In order to compare the
effect of irrigation set point on ginseng growth in rain shelter house, we measured
growth characteristics and yield of 4 years old ginseng. Shading material of plastic
film house was polyethylene film with two layered polyethylene net (PEF+PEN) 75% and
the types of irrigation set point were 20, 30 and 40kPa. As a result, the average
value of the raw weight of ginseng root was 66.8 g per root, and the yield of ginseng
root was 3.61 kg per 1.67 m2 at 20 kPa (Table). At the point of 20kPa, the yield of ginseng root was the highest
among the three set points and the miss-plated rate was the lowest. The order of tap
root diameter and profit by irrigation set point was 20kPa> 30kPa> 40kPa. We concluded
that the 20kPa could be a good irrigation set point of rain shelter house for 4-year-old
ginseng cultivation in northern region of Korea.
Tab. 1: Growth characteristics and yield of ginseng according to the irrigation set point
|
Irrigation
set point (kPa)
|
Miss-plated rate
(%)
|
Root length
(cm)
|
Tap root
diameter
(mm)
|
Fresh weight
(g/root)
|
Root yield
(kg/1.62 m2)
|
profit
(Won/1.62 m2)
|
|
20
|
4.3 ± 3.57
|
33.6 ± 4.29
|
27.3 ± 2.58
|
66.8 ± 16.4
|
3.61 ± 0.14
|
104.724
|
|
30
|
4.8 ± 2.06
|
31.2 ± 3.97
|
25.2 ± 1.59
|
61.5 ± 20.1
|
3.13 ± 0.12
|
90,569
|
|
40
|
6.7 ± 4.12
|
33.3 ± 5.65
|
25.7 ± 3.58
|
60.9 ± 19.7
|
2.92 ± 0.30
|
84,544
|
