Proper Light Intensity, Potting Media and Fertilization Level for Potted Hepatica asiatica Nakai
2015
Jeong, K.J., Graduate School, Gyeongnam National University of Science and Technology, Jinju, Republic of Korea | Jeon, H.S., Agronomy Oriental Medicine Resource, Gyeongnam National University of Science and Technology, Jinju, Republic of Korea | Chon, Y.S., Department of Horticultural Science, Gyeongnam National University of Science and Technology, Jinju, Republic of Korea | Yun, J.G., Department of Horticultural Science, Gyeongnam National University of Science and Technology, Jinju, Republic of Korea
This study was conducted to select proper light intensity, pot media, and fertilization level for potted Hepatica asiatica Nakai native to Korea. The plants were grown under various light intensities (shading rate, 52, 82, 90, 97%) imposed by shading net. Plants grown with 52% shading showed a low survival rate (65%). Survival rate increased as shading increased, with over 80% survival in shading above 90%. Growth indexes such as fresh weight and leaf number did not show any significant difference between shading treatments. Plants grown in a soil mixture of decomposed granite:fertilizer-amended media:Kanumatsuchi (60:10:30, v/v/v) or river sand:fertilizer-amended media:bark (50:20:30) showed over 85% survival. However, plants grown in a soil mixture of river sand:fertilizer-amended media:Kanumatsuchi (50:30:20) or upland:river sand (40:60) showed very low survival, below 60%. Leaf number and plant height were the highest in a soil mixture of decomposed granite:fertilizer-amended media:Kanumatsuchi (60:10:30) as well. To select a proper fertilization level for H. asiatica, hyponex solution diluted 1,000- or 2,000-fold were applied weekly or biweekly. The survival rate was lowest at weekly application with 1,000-fold diluted solution, and no significant difference was observed between other treatments. In conclusion, H. asiatica exhibits preferences for very low light intensity and soil with air permeability, and is adaptable to a broad range of fertilization levels.
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