야생 약초인 세신의 재배년수별 생육특성과 수량성을 구명하고 주요 정유 성분인 methyleugenol과 safrole함량 변화를 조사하여 세신의 상품적 가치를 높이고 품질의 규격화를 위한 기초자료를 얻고자 1993년부터∼1997년까지 5년간에 걸쳐 시험을 실시하였던 결과를 요약하면 다음과 같다. 1. 재배년차별 생육은 재배년수가 경과함에 따라 지하부 생육의 신장차이가 크게 나타났으며 특히 근장의 크기에 따라 수량변화에 영향을 미쳤다. 2. 10a당 건근 수량은 3년재배(127kg/10a)에 비하여 4년재배 191%, 5년재배 259% 순으로 증수되었다. 3. 재배기간별 정유함량은 재배 기간에 따라 3년 5%, 4년 4.5%, 5년은 4.3% 순이었다. 4. 주요 정유 조성성분인 methyleugenol은 재배년수가 길어질수록 증가하였으나 safrole함량은 점차 감소하여 methyleugenol과 safrole 함량은 서로 상반된 관계를 나타내었다.
This experiment was conducted to investigate the change of root yield and essential oil contents by cultivated year in Asaram siebold Mio. Growth of aerial part such as plant height, leaf length and leaf width increased rapidly in two to three-year-old. Root length and root weight per plant were increased as cultivation year passed. Especially the speed of development was very fast in two and three-year-old alike aerial part. Root yield was the highest at five-year-old. The content of essential oil was decreased gradually as cultivation year passed. Methyleugenol content was increased, while safrole content was decreased by cultivated years. The increasing of methyleugenol content in four to five-year-old was not higher than three to four-year-old. In the result, it concluded that the optimum harvest time of Asarum sieboldi MiO is five-year-old cultivated based on root yield and effective medical components.