This study was conducted to develop effective production system in greenhouse for leaves and stems of Angelica acutiloba by using connect pots in 2003 and 2004. Seed germination rate and plant biomass of Angelica acutiloba collected in 2004 were higher than those harvested in 2003. Germination rate of Angelica acutiloba seeds collected in 2003 was 10％, while germination rate of seeds collected in 2004 was above 90％. Especially, plant growth and yield of Angelica acutiloba grown in connect pots sized with 4 × 4 × 5cm(length × width × height) were the highest. These results indicate that leaf and stem production of Angelica acutiloba can be improved by using connect pots and optimizing seed collecting time in greenhouse.

This study was conducted to produce effectively more leaves of Angelica acutiloba through year-round production system by using various mulching materials and polyethylene(PE) tunnel. Soil temperature by covering treatment was higher in PE mulching and PE tunnel than in rice straw mulching, especially showing the highest temperature in PE tunnel from April through May. Water content of soil was higher in PE mulching than in non-mulching. Leaf production of Angelica acutiloba through year-round production showed the highest in PE tunnel and root production in PE mulching. These results suggest that leaf production of Angelica acutiloba can be maximized through PE tunnel cultivation system.

본 실험은 포장과 포트재배에서 토양시비수준(土壤施肥水準), 온도(溫度) 및 광조건(光條件下)에서 건물생산량과 광합성(光合成) 속도의 차이를 측정분석하여 야콘의 적정생장(滴定生長) 조건(條件)을 밝히고자 실시하였다. 1. 포장에서의 시비수준별 건물생장율은 무처리구 보다 퇴비구에서 높게 나타났으며, 구근의 건물중은 무처리구와 질소처리구와는 큰 차이를 보이지 않았다. 2. 최대 엽광합성 속도는 퇴비구(S-1)에서 17.3mg CO2gdm-2s-1로 다른 질소 처리구 보다 높았으au, 무처리구의 엽광합성 속도가 가장 낮았다. 3. 광환경(光環境) 조건(條件)에 따른 퇴비구와 무처리구의 엽광합성 속도차이는 뚜렷하게 차이가 났으며 광포화점은 1200±50μmolm-2s-1이었다. 4. 광합성속도는 34±3℃ 정도에서 높은 반면 28℃ 정도 이하에서는 기공저항에 의하여 엽광합성 속도가 낮았다.

구기(枸杞) 신조예취(新梢刈取)가 경엽(莖葉) 및 과실(果實) 수량(收量)에 미치는 영향(影響)을 구명(究明)하고자 1991년부터 1992년 까지 청양종(靑陽種)을 공시(供試)하여 시험(試驗)을 수행(遂行)하였던 바 그 결과(結果)를 요약(要約)하면 다음과 같다. 1. 구기자(枸杞子) 생육시기별(生育時期別) 지상부(地上部) 건물중(乾物重)(잎, 줄기) 변화(變化)를 보면 7월(月) 중순(中旬)에 최대치(最大値)를 기점(起點)으로 후기(後期)부터 감소(減少)하고 지상부(地上部) 건물중(乾物重) 중(中) 구기엽(枸杞葉) 6월(月) 하순(下旬)에 최대치(最大値)에 이르다가 急激(급격)히 감소(減少)하였으며 구기경(枸杞莖)은 생육초기(生育初期)부터 완만히 증가(增加)하였다. 2. 착과수(着果數)는 주지(主枝), 2차분지(次分枝)보다 1차분지(次分枝)가 많아 1차(次) 분지(分枝)를 많이 발생(發生)토록 하는 전지(剪枝) 방법(方法)이 연구(硏究)되어야 할 것으로 사료(思料)되었다. 3. 구기엽(枸杞葉)은 5, 6, 7월(月)에 채취(採取)하는 것이 신초장(新梢長), 분지수(分枝數)가 많았고 건조비율(乾燥比率)이 낮아서 품질(品質)이 좋을것으로 사료(思料)되었다. 4. 구기엽(枸杞葉) 채취회수(採取回數)가 늘어날수록 구기자(枸杞子)(과실(果實))수량(收量)은 감수(減收)되었고 구기엽(枸杞葉) 건물수량(乾物收量)은 증가(增加)하였으나 구기자(枸杞子)(과실(果實)) 생산수량(生産收量)을 고려할시(時)는 구기엽(枸杞葉) 채취(採取) 회수(回數)를 3회(回)이내 까지 채취(採取)하는 것이 유리(有利)할 것으로 사료(思料)되었다.

A series of experiment was carried out to study on the production of disease-free seed potatoes at the Alpine Experiment Station from 1960 to 1968, which initiated a study of comparison on degeneration of plain warm region and high altitude products and the effect of latent potato virus X (PVX) and potato leaf roll virus(PLRV) on degeneration. Particular observations were made on some aspect of the nature of potato virus disease and its control such as concentrations of PVX, range of host plants, physical properties such as concentrations of PYX, range of host plants, physical properties and carrying effect of insects, by investigating 9 different areas of the main potato producing regions (Kimhae, Taegu, Choongju, Taejoen, Suwon, Kwangju, Chonju, Cheju and Chinju). Highly purified anti-serum was separated and tested for control of the virus disease and also various method of prevention and control of PLRV were observed, using cultivation of sprouted seed tubers, early harvesting method, and systemic chemicals. The results obtained are summarized as follows; 1. Potato yield in the plain region decreased by 32.8~66.3% in the first year cultivation of seed potatoes from colder region, and the rate of virus infection was 92.9 to 95.4%. 2. Plants of three families including, 20 species were susceptible to the PVX, and among the plants Salvia officinalis of a habits only was the carrier while the symptom of Digitalis purpurea of Screphulariaceae was masked. Necrosis and ring spot was occurred in most pJants of the Solanaceae and ring spot symptom also was observed in Nicotiana tabacum L. var. White Burley and in N. glutinosa. 3. The 8C2 strain of virus had the following physical properties; thermal inactivation point, 68-72~circC : dilution inactivation point, above 1, 000, 000 dilution: ageing in vitro, 240-360 days: and ageing in dry plant tissue, 30 days. 4. Myzus persicae and Oxya spp. did not transmit the 8C2 strain of potato virus. 5. Virus was purified through the ammonium sulphate isolating method, and higher titer value, 1/2048 was obtained through anti-serum test. 6. Inhibition Chenopodiacae on the virus infection of potato was remarkable, and inhibition of local lesion host also was observed. 7, By earlier planting of sprouted seed tubers, growth period could be prolonged by 10 to 12 days. 8. Earlier harvest decreased much the rate of virus infection of seed potatoes. 9. According to the results of aphid control trial using systemic soil insecticides at Kangnung and Taekwanlyung, PSP 204, Disyston and Thimet was effective to aphid control. In particular, control effect of twice treatments of PSP 204 was great. 10. Treatmental effect of those chemicals lasted about 60-70 days. However, single foliar application of emulsified chemicals was not effective to potato virus control. 11. The effect of PSP 204, Disyston, and Thimet on the control of potato leaf roll virus was great, particularly in the case of two treatments of PSP 204, at Kangnung as well as at Taekwanlyung. Higher negative correlationship between the control effect of potato leaf roll virus and potato yield was observed showing the value r=-0.85 at Kangnung, and r=-0.87 at Taekwanlyung. 12. Differences in the control effects among PSP 204, Disyston, and Thimet was not noticed.