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시호(柴胡)의 재식밀도(栽植密度)가 생육(生育)과 수량(收量)에 미치는 영향(影響)
김충국(Young Guk Kim),임대준(Jin Ki Bang),유홍섭(Hong Seob Yu),이승택(Seoung Tack Lee) 한국약용작물학회 1997 한국약용작물학회지 Vol.5 No.1
Bupleurum falcatum is one of the oldest medicinal crop spontaneously generated as well as cultivated by man and successfully grown during the summer season in Korea. This study was con-ducted to examine the effect of planting density in the row spacing and hill spacing system using machine seeder on major agronomic traits, yield and labor saving. In 1993 and 1994, a spilt plot design was used with row spacing as the main plot and hill spacing as subplot. Labor saving efficiency of the machine se-eder reduced 96% than the hand seeding in sowing time required. Number of seeding stand increased, but stem height and number of nodes did not affect with different density in each row and hill spacing. There were reduced with narrow hill spacing on stem diameter, number of branches, shoot weight and root traits. There was no significant interaction between row and hill spacing for any major traits studied except shoot weight. Yield was more increase at 20cm than at 30cm row spacing. For these studies the op-tiomum density appears to be between drilling or 5cm hill spacing with 20cm row spacing. A highly sig-nificant positive correlation was appeared between number of seedling stand and root yield.
참당귀묘의 (當歸苗) 생육진전 (生育進展) 양상 및 파종량에 따른 묘생육 특성
유홍섭(Hong Seob Yu),강병화(Byeung Hoa Kang),장영희(Yeong Hee Chang),김충국(Chung Guk Kim),김영국(Young Guk Kim),이승택(Seoung Tack Lee) 한국약용작물학회 1995 한국약용작물학회지 Vol.3 No.2
These experiment were conducted to know the seedling growth pattern and to determine the appropriate seeding amount for producing the small and middle sized uniform seedlings of which known to have low bolting in the cultivation of Angelica gigas. Cotyledons of seedling were emerged by 18 days after seeding and the first and the second leaf appeared at 5.0 days and 9.8 days respectively after the anterior leaf emergence. Leaf development from the 3rd to the 6th in order needs about 13 days respectively after the emergence of anterior leaf. Growth of small and middle sized seedling of which required 60∼87days were 3.0 to 7.0㎜ in root head diameter, 63 to 10.3㎝ in root length, 0.4 to 1.3g in fresh root weight per plant with 3.9 to 5.0 leaves. The highest production ratio of small and middle sized seedlings was showers in 15,000seeds/㎡ of seeding amount as 52.8% respectively.
온도, 광, GA₃ 및 저장방법이 참당귀 발아에 미치는 영향
유홍섭(Hong Seob Yu),강병화(Byeung Hoa Kang),임대준(Dae Joon Im),김충국(Chung Guk Kim),김영국(Young Guk Kim),이승택(Seoung Tack Lee),장영희(Yeong Hee Chang) 한국약용작물학회 1995 한국약용작물학회지 Vol.3 No.1
Theses studies were conducted to clarify the germinating characteristics of seed treated with different temperature, light, and Gibberellin(GA₃) to produce the homogeneous seedlings Angelicagigas NAKAI. The results obtained are summarized as follows : Rate and speed of germinating at 25℃ were higher than 15℃ and 20℃ by 87.3% and 68.9% and also the required day for germination at 25℃ was shortest by 14.1 days. Germination rate at the light condition was 90.7% and that at the dark was 65.7%. Germinating ability of seed stored at 4℃ and -10℃ for 165 days as dried states was 92.0% and 91.3% while that at room temperature was 50.3%, but the longer storage of seed than 165 days decreased the ability. Gibberellin treatment by 10ppm to seed stored at 4℃ and by 6ppm to seed stored at -10℃ increased the germination rate more by 20.9% and 31.7% than nontreated seed.