• Proceedings of the Plant Resources Society of Korea Conference
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• 2023.04a
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• pp.37-37
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• 2023

천마(天麻, Gastrodia elata Blume)는 난초과(蘭草科, Orchidaceae)에 속하는 식물로 잎과 뿌리가 없어 탄소동화능력이 없으며, 뽕나무버섯균과 공생하는 기생식물이다. 천마는 노지재배 시 혹한, 폭우 등 기상환경에 따른 연차간 수량성 차가 673~1,175kg/10a로 크고, 연작에 따른 수량성이 연작 1회 시 29%, 연작 2회 시 68%가 감소하는 경향을 보이고 있다. 최근 기후변화 대응으로 비가림시설재배가 이뤄지고 있으나, 비가림 시설재배 또한 연작장해가 발생하고 있다. 따라서, 본 연구는 비가림시설을 활용한 천마 재배의 연작장해 경감을 위해 태양열(6~10월, 비닐피복) 및 토양훈증(메탐소듐, 30 L/1,000 m²)으로 토양소독 처리를 하였고, 윤작(수단그라스)을 대조구로 설정하여 토양 화학성, 미생물상 및 수량성을 분석하였다. 토양소독 전·후 토양내 화학성을 분석한 결과, 비가림시설재배 시 토양 화학성의 변화는 거의 없었다. 토양소독 후 metagenome 분석 결과, JCR21(윤작), JCS21(태양열), JCF21(토양훈증)의 시료로부터 확보한 총 read는 598,425개였으며, 이 중에서 Eukaryota로 분류되지 않은 read는 2,397개(0.4%), no hit, not assign된 read는 17,094개 (2.9%), Bacteria로 분류된 read는 281,391개(47.0%), Eukaryota로 분류된 read는 총 297,543개(49.7%)였다. JCR21은 전체 read의 35.0%, JCS21은 34.0%, JCF21은 31.0%를 차지했고, Eukaryota는 JCR21 대비 JCS21, JCF21에서 각각 9.9%, 18.9% 낮았다. 그리고, Bacteria는 JCR21 대비 JCF21은 5.4% 감소하였으나, JCS21은 1.4% 증가하였다. 이 중 Eukaryota에서 종(species)명까지 정확하게 밝혀진 것은 27종이었고 속(genus) 으로는 18속이었다. JCF21은 전체 read의 30.2%, JCS21은 33.8%, JCR21은 36.0%를 차지했고, JCF21 포장은 토양훈증으로 JCS21에 비해 3.6%, JCR21에 비해 5.8%까지 균수가 감소함을 알 수 있었다. 대체적으로 발견된 균은 고르게 분포하고 있었으나 초작지, 연작 1회지, 연작 2회지에서는 많이 발견되지 않았던 Mucoromycota (41,490 read, 13.9%), Agaricales (10,586 read, 3.6%)가 높은 비율로 분포를 하고 있었다. 토양소독 처리에 따른 10a 당 수량을 살펴본 결과, 윤작 1,309 kg, 태양열소독 1,609 kg, 토양훈증 1,733 kg으로 나타났고, 수량지수가 윤작 처리구 대비 태양열소독은 23%, 토양훈증은 32% 높았다. 성마율은 윤작 51%, 태양열소독 63%, 토양훈증 68%으로 나타났으며, 자마율은 윤작 49%, 태양열소독 37%, 토양훈증 32%으로 나타났다. 괴경썩음 정도는 윤작 30-49%, 태양열소독 10-19%, 토양훈증 5-9%로 나타났다. 따라서, 비가림시설을 활용한 천마 재배 시 토양훈증 소독 처리를 하면 연작이 가능할 것으로 판단되었다.

• Research in Plant Disease
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• v.10 no.2
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• pp.138-141
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• 2004

It was conducted to find out the effect of chemical treatment on seed tubers and soil to control potato common scab in Jeju Island in 2001. Although the treatment of soil disinfection with Dazomet Gr. (30kg/10a) was more effective comparing to the treatment of seed disinfection and the untreated, the control value was merely 40.5%. However, the combined treatment of soil and seed disinfection was considerably more effective to reduce the percentage of infection and infection area, and increase the production of marketable tubers and also increase the control value. Therefore, the combined treatments are demanded to reduce the scab incidence in Jeju field conditions.

• 수도
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• s.52
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• pp.48-60
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• 1990

이 글은 경상남도에서 자체 실시한 상수도 교육 교재 중에서 수처리 약품, 소독제의 성상과 관리에 대한 내용을 발췌하여 계재하는 것으로 업무에 많은 참고 바랍니다.

• Research in Plant Disease
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• v.17 no.1
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• pp.32-37
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• 2011

Field experiments were conducted to evaluate the effectiveness of soil solarization at the Nonsan Strawberry Experiment Station, Korea in 2006 and 2008. In in vitro tests, exposure times to achieve an $LD_{100}$ of Fusarium oxysporum f. sp. fragariae were 6.6 days and 5.1 days at $45^{\circ}C$ and $50^{\circ}C$, respectively. A 100% lethal temperature was $46.7{\pm}0.1^{\circ}C$ for the same fungus. For field trials, solarization was conducted during the summer season using polyethylene mulch in a plastic house. The organic matter+calcium cyanamide+solarization treatment increased pH, organic matter, and calcium content compared to those before treatment in soil analysis, but no effect had an urea+solarization treatment. The temperatures at 10 cm depth were different in each treatment and the highest temperature was recorded from July 30 to August 10. The average temperature in organic matter+calcium cyanamide+solarization treatment at 10 cm depth was $3{\sim}4^{\circ}C$ higher than that in all the other treatments. All solarization treatments reduced the soil population of F. oxysporum f. sp. fragariae at 100% in 2008 relative to the non-treated control. All solarization treatments reduced Fusarium wilt incidence to 0% in 2006 and 2008. The effect of organic matter+calcium cyanamide+solarization against F. oxysporum f. sp. fragariae indicates that there may be future alternatives to traditional solarization for disease control as well as reducing the time needed.

• Journal of Sericultural and Entomological Science
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• v.33 no.2
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• pp.97-99
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• 1991

Disinfection of the rotatory cocooning frame is difficult under a multiple rearing system as the work is successively done. Accordingly, to investigate the effect of formalin fumigation on the rotatory cocooning frame during mounting period the mulberry leaves smeared with the water extract of dust collected form cocoonin frame after treatement were fed on the just molted 3rd instar larvae, 82% of them died with disease during 6 days, and negative effect of formalin fumigation takes place in terms of the cocoon reelability, showing 41% of it.

• Korean Journal of Medicinal Crop Science
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• v.8 no.1
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• pp.79-82
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• 2000

This study was carried out to investigate the effect of seed disinfectant on leaf blight and smut in adlay. Leaf blight and smut disease in adlay are known to be seed borne. Bjpolan's cojds, pathogen causing leaf blight in adlay, was detected from 32. 7 to 45. 7 % on seeds collected from adlay cultivated farms in Yonchon province. Periods of seed infestation are $0{\sim}7$ days on the variety 'yulmu 1' and $0{\sim}20$ days on 'Yonchon jaerae'. Distribution ratio of seed disinfestation periods was that no disinfestation, $1{\sim}5$days, $6{\sim}10$days and more 11days were 20%, 20%, 45% and 15%, respectively. Frudioxonil W. S. treatment was effective on inhibition of leaf blight and smut disease when treated with infested seeds ; that is, disease control values of the fungicide are 97 and 93.4 percentage, repectively.

• Food Science and Preservation
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• v.16 no.2
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• pp.292-298
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• 2009

This study investigated the microbial safeties and germination rates of five domestic sprout species(alfalfa, broccoli, clover, red cabbage, and red radish) grown from disinfected seeds. The 48 h germination rates of all seeds were over 90%, regardless of treatment. Seed total plate count(TPC) and coliform levels were reduced significantly(p<0.05) by treatment with 20,000 ppm calcium hypochlorite solution at $25^{\circ}C$ for 15 min, following FDA recommendations. However, after germination, all sprouts regardless of treatment exhibited bacterial counts of $10^7-10^8CFU/g$. Listeria monocytogenes was detected at $10^3-10^4CFU/g$ on germinated non-disinfected clover seeds at days 1, 2, and 5. In conclusion, although sprout germination from disinfected seeds potentially permits the growth of sprouts with lower pathogen counts, there were no significant differences in TPC or coliform levels between sprouts grown from disinfected seeds and control sprouts. Further work is needed to improve the microbial safety of cultivated sprouts and to find optimal conditions for seed germination.

• 두엄누리회보
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• s.11
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• pp.1-4
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• 2004

방치폐기물 처리 이행보증 - 생산 능력 실태조사서 - 향후 퇴비의 변신 - 소독설비의 운영 및 소독요령

• Korean Journal of Medicinal Crop Science
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• v.8 no.3
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• pp.259-265
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• 2000

This study was carried out to investigate the effect of soaking time of seed disinfectant, Fludioxonil on the germination and disease occurrence of adlay (Coix lacryma-jobi L. var. ma-yuen Stapf). The germination rate was higher in the seed disinfectant treatment for 3 days followed by seed soaking for 3 days than that of other treatments under controlled condition of low temperature. The value of two experiments were 90.8%, 96.7%, repectively. And, the time of seed soaking was longer, the more seed rot was proportionly decreased. In the pot and field experiment, germination rates were somewhat low compared to that of petri dish experiment as 88.3%, 84.3%, and occurence of seedling blight showed similar results that of petri dish experiments. There was not significantly different in the yield components among treatments in the field. However, as compared with untreated plot (194kg/10a), unhulled grain yield was increased about 26% on that treatment. Based on these results, it has been thought that improvement of the germonation rate and decrease of disease occurrence of adlay were accompanied with the seed disinfectant during 3 days followed by seed soaking during 3 days before sowing.

• Proceedings of the Korean Environmental Sciences Society Conference
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• 2004.11a
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• pp.205-206
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• 2004

국내 정수처리에 있어 기존 장티프스, 콜레라 등과 같은 병원성 세균의 소독 뿐만아니라 최근에는 지아디아, 크립토스포리디움과 같은 병원성 원생동물의 불활성화에 대하여 많은 관심을 가져야 하며 적정한 소독능을 확보하기 위해서는 정수지의 도류벽 설치, 용량확장, 수위비조절 및 잔류염소 농도 조절 등의 운영 및 시설개선이 필요한 것으로 판단된다.