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KMID : 1098420040120060437
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Korean Journal of Medicinal Crop Science
2004 Volume.12 No. 6 p.437 ~ p.441
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Effect of Split Application of Nitrogen Fertilizer on Growth and Yield in Platycodon grandiflorum A. DC.
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Seong Jae-Duk
Kim Geum-Soog
Kim Hyun-Tae
Park Chung-Berm
Kim Sung-Man
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Abstract
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These studies were conducted to investigate the proper method of nitrogen application for increasing the growth stability and quality in ballon flower (Platycodon grandiflorum A. DC.). In growth characteristics by split ratio of nitrogen application, stem diameter, number of branching roots and number of leaves were higher at the split ratio of 50:50 (nitrogen were splitted a half with basal application and the other half in autumn) than at 70:30. Root length, root diameter and number of branching root were higher at 50:50 than those of 70:30. The root yield was increased by 30% (230 kg/10a) at 50:50 compared with that of the 70:30. The crude saponin contents of root from 50:50 was 4.68%.
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KEYWORD
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P. grandiflorum, nitrogen application ratio, growth, saponin
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