• The Korean Journal of Pesticide Science
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• v.10 no.4
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• pp.359-366
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• 2006

The protective effect of kresoxim-methyl was investigated on 6 important plant diseases, and the vapour effect of it did on barley and cucumber powdery mildews, respectively. With 2.0 ${\mu}g\;mL^{-1}$ of kresoxim-methyl, its high activities against wheat leaf rust and barley powdery mildew were showed such as 92 and 100%, while activities were very low against rice sheath blight, tomato gray mold, and tomato late blight. In vapour phase control activity of kresoxim-methyl against barley powdery mildew was positively correlated with the applied concentrations, except for azoxystrobin and metominostrobin. With 200 ${\mu}g\;L^{-1}$, its control value was 71.9%. When 1000 ${\mu}g\;m^{-3}$ of kresoxim-methyl in vapour phase was applied on 4 plants of cucumber in a vinyl chamber, 51.1% of control value on kresoxim-methyl-treated cucumber was showed 7 days after the application.

• Korean journal of applied entomology
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• v.45 no.1 s.142
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• pp.45-49
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• 2006

Fumigant toxicity of four plant essential oils (muguet flower, patchouli, pennyroyal, spearmint) were tested against the adults of western flower thrips, Frankliniella occidentalis. Among them, pennyroyal and spearmint oils showed 100% mortality at $1{\mu}{\ell}/45m{\ell}$ air dose. Through the constituent analysis using GC and GC-MS, we confirmed that main constituents of pennyroyal oil were pulegone(100.0%), and spearmint oil were $\beta-myrcene(3.5%)$, limonene(12.1%), carvone(85.4%). Among them, carvone and pulegone showed 100% fumigation at $1{\mu}{\ell}/45m{\ell}$ air dose, respectively. It can concluded that two oils are potential control agents against F. occidentalis.

• The Korean Journal of Pesticide Science
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• v.12 no.3
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• pp.302-306
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• 2008

This study was performed to investigate the contact toxicity, fumigant toxicity, and synergistic effect using agricultural materials (AM) when mixed with selected essential oils against oak longicorn beetle, Moechotypa diphysis. Four kinds of AM, namely, chungkiller, ungsalta, jinap, purunjunsa showed 100% contact toxicity at one day after treatment. Subsequently, four AM was tested the fumigant toxicity during 24 hours. At concentration of 1 mL, jinap and chungkiller showed 100% mortality at 3 hr after treatment, prunjunsa and ungsalta showed 100% mortality at 6 hr after treatment. When applicate to the small vinyl bag (15 L), all AM (50 mL/15 L) was showed 100% mortality. Jinap showed the mortality 100% when mixed pennyroyal oil with the ratio of 5+1. It was higher than single treatment.

• 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.

• Food Science and Preservation
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• v.7 no.3
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• pp.241-244
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• 2000

Grapes(Vitis labruscana B) were fumigated with acetic acid at 20mg/liter to reduce storage decay and packaged with polyethylene film(0.03mm), then stored for 90 days at 2$^{\circ}C$. Modified atmosphere packaging reduced slightly weight loss and soluble solids content during storage. Acetic acid fumigation decreased effectively berry shattering and achieved remarkable control of rotting for storage. Two grape cultivars, 'Campbell Early' and 'Sheridan', fumigated with acetic acid had only 0.7~2.9 berries rot compared with 8.3~27.6 berries rot of cluster for grapes that were not fumigated.

• Korean journal of applied entomology
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• v.42 no.3
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• pp.249-255
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• 2003

These studies were carried out to investigate fumigant, contact toxicity and repellency effects of 34 terpenes against acaricide susceptible the two-spotted spider mite, Tetranychus urticae. In addition, the efficacy was also tested against two acaricide-resistant strains. Two terpenes, isosafrole and safrole showed fumigant toxicity of 98.4%, at 10${\mu}\ell$/1 (air) concentration. LD$\_$50/ values of these two terpenes were 2.6${\mu}\ell$/1 and 4.3${\mu}\ell$l/1, respectively. Most terpenes showed low or no contact toxicity, except isosafrole showing 60.2% mortality against eggs. Hexanoic acid and limonene showed repellency effects of 79.1%, 87.8%, respectively, to the susceptible strain at concentration of 1,000 ppm in the lab conditions. Hexanoic acid (1,000 ppm) showed repellency effected of 77.8% and 83.3% to fenpropathrin and pyridaben resistant strains, respectively. However, limonene showed no repellency to the two resistant strains.

• Korean Journal Plant Pathology
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• v.12 no.3
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• pp.316-323
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• 1996

비가림재배 포도원에서 발생하는 흰가루병에 대하여 triazole계 살균제 flusilazole, myclobutanil, difenoconazole, penconazole, triflumizole, triadimefon의 방제 효과를 검정한 결과는 다음과 같다. 살균제 처리구의 이병과방율과 이병엽율은 무처리구에 비해 현저히 감소하였고, 이들의 방제가는 과방에서 약제에 따라 94.7∼97.9%, 잎에서 85.5%∼90.9%였으며 대조약제인 polyoxin B의 방제가와 유사한 정도를 보였다. 공시살균제의 보호효과는 살균제를 병발생 1주일전에 살포하는 경우, 살포 3주 후에 방제가는 약제에 따라 72.2∼90.5%였으나 4주 후에는 21.2∼41.6%로 감소하여 대조약제 polyoxin B의 52.5%보다 감소시켰으나 myclobutanil의 발아억제 효과는 약제 농도증가에 크게 영향받지 않았다. 살균제에 침지한 cheesecloth를 포도원 선반에 매달아 조사한 공시살균제의 훈증효과는 살포농도의 2배로 처리했을 때 처리점으로부터 반경 30cm이내의 포도송이에서는 약제에 따라 57.2∼71.1%의 방제가를 보였으나 전체 식물체에서는 49.1∼65.8%로서 10일 간격으로 3회 살포한 것 보다 낮은 방제가를 보였다.

• Journal of Korean Society of Archives and Records Management
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• v.1 no.1
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• pp.231-243
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• 2001

The sterilization method of records by fumigation using mixed gas of methyl bromide(MB) and ethylene oxide(ETO) has been generally used as a way to protect biological deterioration by microorganisms and insects. In this study, we confirmed sterilization effect of MB and ETO [86 : 14(Vol.%)] on and analyzed toxicity on microorganisms isolated from records. To analyze sterilization effect of fumigation on microorganisms and insect, we have fumigated microorganisms and insect with a various amounts mixed gas of MB and ETO, and various exposure time. Insect was sterilized at all experimental conditions. In microorganisms, sterilization effect was detected only when the mixed gas was treated at $120g/m^3$ concentration for at least 24 hrs. To test the possibility of isolated microorganisms as a threat to human health, it was investigated that toxicity test using yeast, radish and cancer cells on microorganisms. Only Aspergillus oryzae had an inhibition effect on growth of yeast. radish and cancer cells, respectively. These results demonstrate that sterilization effect can occur at low concentrations of the mixed gas on insect but requires higher concentrations of the mixed gas on microorganisms. In addition to, it is suspected that the possibility of the microorganism as a threat to human health is little.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2019.04a
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• pp.91-91
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• 2019

전북 완주군 농가에서 2017년 12월에 재배한 '시베리아'와 '메두사' 품종을 1시간 이내에 국립원예특작과학원 실험실로 이동하였다. 알약(SmartFreshTM, AgroFresh Inc., USA)형태의 1-MCP를 1.875g/3.55m3 기준으로 정량하여 Activator Kit(SmartFreshTM, AgroFresh Inc., USA)에 넣어 마개를 닫고 몇 번 흔들어주어 녹인 후 1.5 ppm이 되도록 처리하였으며 3시간 훈증 후 30분 환기하였다. 훈증처리 후 절화 백합은 유공 필름 슬리브를 이용하여 포장한 후 골판지상자에 넣어 모의 수출환경에서 수송방식은 건식(건조처리)상태로 $4^{\circ}C$ 저장고에 암상태로 저장하면서 무처리를 대조로 에틸렌 노출 조건 조성을 위하여 후레쉬라이프(탑프레쉬) 5g 봉지를 상자내부 5개, 상자외부 저장고 내에 10개로 총 15개의 에틸렌 발생제 처리를 하였다. 백합 절화 신선도 유지기간 연장을 위한 선도유지제 전처리 효과는 1.5 ppm 1-MCP 3시간 훈증처리에 의해 잎의 황화현상을 지연시키는 효과가 있었다. 전체적으로 판정한 절화수명은 '시베리아'는 무처리 9.0일, 1-MCP 훈증 9.0일, 에틸렌 발생제 8.3일, 1-MCP 훈증+에틸렌 발생제 9.5일이었으며 '메두사'는 무처리 6.5일, 1-MCP 훈증 7.5일, 에틸렌 발생제 5.7일, 1-MCP 훈증+에틸렌 발생제 8.5일로 나타났다. 에틸렌에 노출은 꽃의 빠른 노화를 야기하여 절화수명을 단축 시켰으며 이상개화를 보이는 꽃도 있어 상품성이 크게 떨어졌다. 1-MCP에 의해 잎의 황화 억제에 효과적이었으며 저장 중 에틸렌 발생제를 동시에 처리하였을 때 품질유지 효과가 더 크게 나타났으며 '메두사' 품종에서는 만개시 화색도 더 진하게 나타났다. 따라서, 저온저장이나 선적시 에틸렌 발생이 많은 품목과 혼합하게 될 것이 예상될 경우에 품질유지를 위해 1-MCP 훈증처리를 하면 효과적일 것으로 사료된다.

• Korean journal of applied entomology
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• v.57 no.3
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• pp.151-160
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• 2018

Anoplophora chinensis and A. glabripennis is classified as important quarantine Cerambycidae beetles worldwide. These beetles cause serious damage on natural host plants and export bonsai trees in Korea. We evaluated efficacy of phosphine fumigant for control of two Cerambycidae beetles in bonsai. In the preliminary test to achieve CT (Concentration x time) values of phosphine to Cerambyicdae beetles larvae, we used Monochamus alternatus of larvae as an alternative insect. A 24 h phosphine fumigation with $2g/m^3$ phophine achieved 100% eggs mortality against Anoplophora chinensis and A. glabripennis. Larva of A. chinensis was also completely controlled when treated for 168-h at same dose desiccator. 100% mortality on larval stage of two beetle species were achieved both in dormancy (January) and vegetative period (February) of bonsai when treated with $2g/m^3$ phosphine. However, phosphine fumigation against vegetative period of Acer palmatum, Carpinus turczaninowii and Malus sieboldii bonsai showed slight phytotoxicity (shorten leaf and flower size and delayed flowering).