: The management and the use of major mineral nutriments such as nitrogen, phosphorous, and potassium, etc have been practiced and improved in various cultivating methods of Panax ginseng C. A. Meyer. The purposes of this study were to examine the content of major mineral nutrients on different ginseng aging from 1 to 6 years old, to analyze their uptake and utilization in tissues of ginseng, and to find out their proper managing techniques throughout the cultivation of ginseng. In case of the leaves, the N content was not clearly different from 1 to 6 years old, while the content of P and K was generally decreased throughout the cultivating years. In case of the roots, the content of N and K was gradually decreased from 1 to 6 years old, while the P content was increased until 3 years old, decreased at 4 years old, increased again at 5 years old, and decreased again at 6 years old. The uptake amount of N was increased in root of ginseng from 1 to 6 years old, 0.02 to 2.79 ㎏/10a based on dry weight, respectively. Other minerals of P, K, Ca, and Mg were increased for the cultivating year. Comparing the uptake amounts of N, P, K with different cultivating year, they were the highest uptake amount at 4 years old and then were decreased. The management techniques of major mineral in cultivation of ginseng would be studied and evaluated more in order to have better ginseng production.
: This study was carried out to have the basic and applied informations relating to increase the productivity and quality of ginseng. 2 years-old ginseng was cultivated under hydroponic culture with the controlled environment conditions in a greenhouse. Major growth characters and yields were investigated with two different temperatures and several growth stages. The plant height and stem diameter were higher at low temperature than those at high temperature. They were not clearly different with six different growth stages. The root length was not clearly different between two temperatures; however it was continuously grown from June until August. The root diameter was higher at low temperature than that at high temperature. It was rapidly increased from June until August. The length, width, and area of leaf were higher at low temperature than those at high temperature. The fresh and dry weights of different plant tissues were also heavier at low temperature than those at high temperature. The moisture content of ginseng root was continuously decreased from June until August. The yield of ginseng was higher at low temperature compared to that at high temperature. The cultivating conditions in hydroponic culture of ginseng, especially temperature, would be an important factor to have better growth and production.
: This study was conducted to improve the managing and storing methods of the seeds of Aralia cordata var. continentalis (Kitagawa) Y.C.Chu, to examine the viability and the germination ability of seeds with different storing conditions and methods, and to develop new ways to propagate and have better healthy seedling. Therefore, the germination rate, days required for germinating seeds, and early growth responses of Aralia cordata var. continentalis (Kitagawa) Y.C.Chu were investigated with different storing temperatures, durations and methods. The germination rate was higher in stratified storage than that in dry storage condition. The highest germination rate was with outdoor temperature at 30 days after stratified storage. The days required for germinating seeds were less than 10 days with the treatment of 25℃ and outdoor temperature in stratified storage. In dry condition, they were shorter with 4℃ and 25℃ than those with -20℃ and outdoor temperature. Leaf number of seedling was higher in stratified storage compared to that in dry condition, while it was not clearly different according to storage temperatures and durations. Leaf length and leaf width of seedling was not difference among the treatment of storage methods, temperatures, and durations. Stem length of seedling was higher in stratified storage than those in dry condition, while root length was not clearly different among the treatments. It would be assumed that temperatures, methods and durations of storage could affect much to the germination rate and the early seedling growth response.
: This study was carried out to have the basic and applied information to develop the cultivation methods and models and to increase the productivity of high-quality ginseng. Plant height was dramatically increased from one year old to four years old, and then it was grown up very slowly. Stem length was shown similar tendency as the plant height did. Its range were from 9.4 ㎝ in one year old to about 42.4 ㎝ in four year-old ginseng. The leaf area was clearly increased until four years old, 10.1 ㎝ 2 in one year old to 204.9 ㎝ 2 in four years old, while it was slightly increased after four years old. Root length was continuously increased from one year old until four years old, and then it was grown up very slowly. Tap root length which was measured was appeared about 8 ㎝ from three years old to six years old, showing not much different among the year-olds. The root diameter was continuously increased from one year old to six year-old ginseng, about 2.9 ㎜ and about 19 ㎜, respectively. The moisture content was higher on the shoot than that on the root. It was slightly decreased as they were getting old. In shoot part, the rate of leaves and stems based on dry weight was about 1 : 1. In the root, the dry weight of tap root was heavier than that of lateral root. The dry weight of shoot was decreased after four years old, while it of the root was continuously increased until six years old, resulting the production of ginseng root. Based on the results of this study, growth characteristics of shoot and root of ginseng were dramatically increased from one year old to four years old and then their growths were appeared different between shoot and root, showing not much growing in shoot and keep growing in root.
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