This research was conducted to investigate the influence of variouis organic substrates on growth and yield of organically grown ginseng seedlings in a shaded plastic house. In the investigation of optimal substrate, the eight substrate were formulated by adjusting blending rate of peatmoss, perlite, coir dust(coco peat), and vermiculite. Then, the changes in physico chemical properties of root substrates as well as their influences on the growth characteristics and yield were determined at six months after sowing. The elevation of the blending rate of peatmoss from 50% to 70% with decrease in the rate of inorganic component (mixture of perlite and vermiculite) from 50 to 30% resulted in the increase in container capacities and decrease in total porosities and air-filled capacities. The concentrations of NH4-N, P2O5 and K increased as the incorporation rate of castor seed meal, phosphate ore, and langbenite, respectively, were elevated during the root medium formulations. The PPV-1 and PPV-4 substrates produced high stem length, stem diameter, shoot fresh weight, leaf area and root length among eight substrate. Root fresh weight was heaviest in PPV-4 compound nursery media. The results of this experiment will be utilized in the new substrate application for ginseng organic culture in shaded vinyl house.

도시민들이 전통나물 자원식물 식물을 쉽게 구입 및 재배하는데 필요한 자료 축적 측면에서 쑥부쟁이 근경의 유통기술 개발과 이용성을 조사하였다. 쑥부쟁이는 전남 광양산으로 2년차 근경을 3월 25일에 굴취하여 이용하였다. 쑥부쟁이 근경을 식재한 후 초장 10cm를 기준으로 수확기를 조사한 결과 아파트 베란다에서 재배한 것은 4월 21일경, 정원과 옥상에서 재배한 것은 5월 17일 경이었다. 근경을 굴취하여 4±0.5℃에서 저장한 것을 8월 1일에 출고하여 수태에 적층하여 비닐포장 한 다음 상온의 암상태에 4일간 두어도 84% 이상의 생존율을 나타내었다. 쑥부쟁이 근경을 굴취하여 4±0.5℃에서 저장해 둔 다음 6.27일에 출고한 것은 식재 후 18일이 되어야 10cm 이상 자랐으며, 7월 30일에 출고한 것은 24일이 되어야 10cm 이상 자랐다. 4±0.5℃에 저장한 근경을 물에서 20일간 싹기름한 결과 8.2cm 자랐다. 200mL 물에 식물용 영양제 6mL를 첨가하여 재배한 결과 85일이 되어도 생육이 좋았다. 이와 같은 결과를 고려할 때 쑥부쟁이는 2년차 근경을 냉장하면서 출하기를 조절할 수 있고, 실내에서 물재배도 용이하므로 도시농업, 학습교구 및 원예치료 프로그램 용 등으로 활용성이 높을 것으로 판단되었다.

This study was conducted to investigate the effect of substrates and nutrient treated at last year on the growth of 3 plants for bonsai of this year. Pinus thunbergii, Carpinus turczaninovii, and Pyracantha angustifolia were used in this study, 3 types substrates and 3 concentration of nutrient were treated, and the growth was measured at last year Oct. 16. 2006 and this yeat Oct. 16. 2007. The growth change ratio was calculated by the difference growth value of two years. All of 3 plants showed the higher growth ratio as increased the content of organic matter such as peatmoss and coir, and the root growth ratio of Carpinus turczaninovii, and Pyracantha angustifolia were similar that of shoot, however in Pinus thunbergii the growth ratio of root was reverse that of shoot. With nutrient strength, the shoot growth ratio of 3 plants showed the same trend of substrates results.

Thin sections of cellulose fibers were incubated with an endo- and an exoglucanase labeled with gold particles of differing sizes. The hydrolytic sites were then visualized under transmission electron microscopy (TEM). The potential interaction between the β-1, 4-glucan substrates and the endo- and the exoglucanases was investigated using cellulosic and lignocellulosic substrates. The simultaneous visualization was very successful in distinguishing preferred substrates for each cellulase in lignocellulosic substrates. When plant lignocellulose was preincubated with endocellulase, density of the gold labeling greatly increased suggesting that preliminary exposure of lignocellulosic material to endocellulase may have enhanced the accessibility of the substrate to endocellulase and exocellulase. This result provided a plausible explanation for the observed endo/exo cellulase co-hydrolysis.

Batch experiments were performed to evaluate the effect of sludge acclimation and contact load on the behavior of phosphorus and organic substrates under anaerobic conditions. Four different sludges were acclimated in the sequencing batch reactors operated by intermittent aeration. All the experiments performed in a bench scale have shown the following results: 1. The unreleaseable phosphorus contents for four different sludges are the range of 16 ㎎ P/g SS to 24 ㎎ P/g SS, depending on the sludge acclimation conditions. 2. All the specific substrate uptake rates(SSUR) are expressed in the first order equation for releaseable phosphorus contents. The reaction rate coefficient, k, has the values of 4.0, 8.9, and 13.8 mg COD/㎎ P/hr, depending on the contact load and sludge species. 3. As reaction proceeds, the ratios of ΔP to - ΔCOD at high contact load are almost constant. in the range of 0.10 to 0.14, but at low contact load, they increase from 0.08 to 0.27.