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KMID : 1098420080160020124
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Korean Journal of Medicinal Crop Science
2008 Volume.16 No. 2 p.124 ~ p.130
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Comparison of Yield and Content of Salidroside with Application Rates of Nitrogenic Fertilizer under Forcing Culture of Rhodiola rosea L
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Lee Kang-Soo
Choi Sun-Yong
Li Long-Gen
Hwang Seon-Ah
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Abstract
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This experiment was conducted to investigate the optimum nitrogen fertilization conditions for the production of high-quality Rhodiola rosea L. in forcing culture. Up until 48 kg N/10 a of both urea and ammonium sulfate, dry matter yield of root of Rhodiola rosea L. tended to increase with increase in application rates, however, it decreased thereafter in higher application rates. In the case of urea, the content of salidroside in the root of the Rhodiola rosea L. appeared to decrease rapidly from the application rates of 64 kg N/10 a and over. Meanwhile, the content of salidroside in the root tended to decrease gradually with the application rates exceeding 64 kg N/10 a of ammonium sulfate. The optimum fertilization rates of urea and ammonium sulfate was 45-8-20-10-10 (N-P-K-Ca-Mg) kg/10 a according to the curvilinear regression equation. However, considering the nitrogen accumulation in soil, nitrogen translocation into the plant, and dry matter yield and content of salidroside in the root of Rhodiola rosea L., the optimum fertilization rates of urea and ammonium sulfate would be 40-8-20-10-10 kg/10 a and 35-8-20-10-10 kg/10 a, respectively.
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KEYWORD
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Rhodiola rosea L, Salidroside, Urea, Ammonium sulfate
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