분주 크기와 배지 종류가 고추냉이 생존율과 생육에 미치는 영향을 알아보고자 환경이 조절된 생장상에서 60일간 재배하였다. 수태로 감싼 근경 크기(직경) 5mm 이상 분주 묘의 생존율은 100%였으며, 생육(초장 12cm 내외, 엽수 3~4장)은 양호하였다. 생육 60일의 분주 묘는 초장 20cm 이상, 엽수가 1~2장 증가하였다. 루톤 분의제 처리는 생존율과 생육에 효과가 없었다. 배지 종류(마사, 난석)에 따른 직경 5~10mm 크기의 분주 묘를 담액 수경으로 재배하였을 때 83% 이상의 생존율을 보였으며 배지 종류에 따른 생육 차이는 없었다. 따라서 근경 크기 5mm 이상의 고추냉이 분주를 환경이 조절된 생장상에서 30일간 수경재배 방식으로 순화하여 고추냉이 건전 묘를 생산할 수 있다.

환경이 조절되는 폐쇄형 식물생장시스템에서 플러그 셀 크기(105공, 162공, 288공)와 일장(8/16, 12/12, 16/8hr, 낮/밤) 처리를 각각 달리하여 20일간 생산된 감자 플러그 묘 '수미'와 대지'의 생육과 수량에 미치는 영향을 알아보고자 실험을 수행하였다. 정식 7주째 '수미'의 플러그 셀 크기와 일장처리는 생육과 상대생장률에 차이를 주었다. '수미'의 주당 괴경 중은 셀 크기와 일장이 증가함에 따라 증가하였다. '대지'의 괴경 중은 105공 셀 크기에서 높았으며, 일장 처리에 차이를 보였다. 90일 재배 후, '수미'의 괴경 중(258.9~471.9g/주)은 105공, 162공 처리와 16/8 hr 일장 처리에서 괴경 중이 높았다. '대지'의 괴경중 (278.2~428.0g/주)은 105공 처리에서 높았으나 일장처리 간에는 차이가 없었다. 주당 괴경 수는 '수미'가 2.9~6.9개, '대지' 2.2~3.6개로 플러그 셀 크기와 일장 처리에 따른 유의성은 없었다. 80g 이상의 괴경 크기 비율이 '수미'는 32~50.9%, '대지'는 41.0~56.7%로, 두 품종 모두 288공 셀 크기에서는 감소하였고, 일장 처리 간에는 품종에 따른 차이를 보여 '수미'는 일장이 증가함에 따라 괴경 수가 증가하는 경향을 보였으나, '대지'는 일장 처리에 따른 차이를 보이지 않았다. 이상의 결과, 초기 묘 소질이 감자 생육 및 괴경 중에 영향을 줌으로써 플러그 묘를 이용한 감자 생산에 적합한 플러그 셀 크기는 162공 이하, 12시간 이상의 일장이 필요하리라 판단되었다.

Mg의 시비농도를 인위적으로 조절한 후 국화를 재배하면서 각 원소의 시비수준이 생육과 절화 품질에 미치는 영향을 구명하고 생육을 우수하게 유지할 수 있는 식물체 및 토양의 한계농도를 밝히기 위하여 수행하였다. Mg 결핍증상은 노엽의 엽맥이 갈변한 후엽 전체로 갈변 현상이 확산되고, 최종적으로 노엽이 탈락하는 특징을 나타내었다 Mg 시비농도가 증가할 수록 정식 109일 후의 절화중이 무거워져 1.5mM 시비 구에서 8.84g이었다. 건물 중은 Mg 시비농도가 증가함에 따라 건물중도 증가하였으나, 2.0mM 이상의 고농도 시비구에서는 오히려 감소하였다. 0.5, 1.0 및 1.5mM 시비구에서의 건물중이 8.42, 8.75 및 8.84g이었고, 최근에 완전히 전개된 잎의 Mg함량이 각각 0.34, 0.53 및 0.71%였다. 따라서 절화국 'Biarritz'의 품질을 우수하게 유지하기 위해서는 가장 최근에 완전히 전개된 잎(최상위에서 3~4번째 잎)의 건물중을 기준으로 0.64% 이상이 유지되도록 시비해야 하며, 건물중이 가장 무거웠던 1.5mM의 토양 용액내 농도를 고려할 때 3.68mg·L-1 이상의 Mg 농도가 되도록 시비하여야 한다.

This study was considered chances of additional income, if farmers raised silkworms in unused mulberry leaves, after harvesting mulberry, investigated yields of mulberry leaves in vinyl-house and optimal amount in raised silkworms, First, the results was investigated productions of mulberry leaves in the mulberry tree-shape of vinyl-house, T-shape harvested 7.07 kg, Y-shape was 6.55 kg, in comparison with convention of it was harvested 4.75 kg mulberry leaves/1 mulberry tree, was harvested 49%, 38% more each. Also, yields of mulberry leaves was used 302 kg when was raised 1box of silkworms in the mulberry tree-shape of vinyl-house. In other hand, yields of raising silkworms was analysed in the mulberry tree-shapes of vinyl-house, mulberry leaves of 1,000 ㎡ vinyl-house mulberry tree was raised average of 3.74 boxs silkworms, in the concrete conventional-shape was 3.24 boxs, T-shape did 4.17 boxs and Y-shape was 3.83 boxs, Consequently, if the farmers of 1,000 ㎡ vinyl-house mulberry tree raised silkworms with unused mulberry leaves, could get 1~1.2 million won additionally.

When ginseng seedlings are cultured in paddy fields, quality degradation and yield reduction are induced by severe plant loss with chlorosis on leaves occurred physiological disorder by excessive salt and poor drainage, rusty-root occurrence, and root rot etc. Accordingly, in order to solve these problems, this study was performed to investigate the treatment method, concentrations and time of activated ion calcium as environment-friendly agricultural materials. Activated ion calcium is an enriched and purified water-soluble mineral calcium component for absorbing quickly into plant as a highly functional calcium and it is an alkaline calcium of 37% (370 ml/1 l) concentration with pH 13. Treatment method was that ginseng seeds were sown after removing water in the shade after seed immersion for 1 minute with active ion calcium of 20-fold diluted solution, and then irrigated 4l per 3.3 m2 with 200-fold, 400-fold, and 600-fold diluted solution before emergence on late March, and supplied 1 time on leaves with 500-fold diluted solution in June and July respectively. The disease rate by treatment of activated ion calcium was that on the treatment of soil irrigated with 200-fold diluted solution compared to non-treated soil, damping-off was 33%, anthracnose was 100% reduced and the occurrence rate of rusty-root was 30% reduced. In addition, when active ion calcium of 200-fold diluted solution were soil irrigated, first and second grade ginseng were respectively 26% and 22% produced more, compared with control.

We investigated antioxidant activity and lignan contents by harvesting times to expand use of Schisandra chinensis (Turcz.) Baillon. Total polyphenol and flavonoid contents of seed was higher than those of flesh but there is not much difference in harvesting times. As RC50 value, that was, the concentration of sample required for 50% reduction of 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical, was 13.7~24.2 μg/ml in seed thus it showed a high antioxidant activity. Among lignan components, schizandrin content was the highest and followed by gomisin N and gomisin A in all of flesh and seed. Also these components in seed were 4~9 times more contained than those of flesh. All of them were decreased by harvesting times in flesh. But the contents of schizandrin and gomisin N were high in August 3rd and September 15th in seed, respectively. As the results, the seed of S. chinensis had high antioxidant activity and lignan contents so it could be potentially developed as a resource.

In order to product dry goods of Gastrodiae Rhizoma with high quality, tubers were treated with various dry methods such as cutting, drying methods and steaming. In cutting than no cutting, they were shown shorter drying hours and lower drying yield. Drying hours in freeze drying was shorter than those of hot air and far-infrared ray. Total polyphenol content was higher in cutting than no cutting. According to steaming, it was increased in freeze drying but decreased rapidly in the other dry methods. Among all treatments, hot air dry treatment with cutting and no steaming had the highest total polyphenol content. Gastrodin and 4-hydroxybenzyl alcohol contents generally were similar or higher in cutting than no cutting. By steaming, gastrodin content in freeze drying was decreased but 4-hydroxybenzyl alcohol content was increased. But hot-air and infrared ray dry, they were shown opposite results. Gastrodin and 4-hydroxybenzyl alcohol contents showed opposite reaction to each other and were shown various response by dry methods.