• Proceedings of the Plant Resources Society of Korea Conference
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• 2018.04a
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• pp.15-15
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• 2018

민속식물과 그 이용에 관한 전통지식이 산업화, 도시화 및 노인 세대의 퇴장과 더불어 빠르게 사라지고 있다. 이에 본 연구는 2005년부터 2017년까지 1차(2005~2013), 2차(2014~2017)에 걸쳐 남한 전역 및 함경북도 접경지역을 대상으로 각 지역에서 전통적으로 이용해왔으며 전승되어 온 민속식물 관련 전통지식을 발굴 및 수집하여 DB를 구축하고 유전자원에 대한 주권확보 및 그 연구의 토대를 마련하고자 수행하였다. 조사 결과, 민속식물은 138과 557속 975종 7아종 113변종 19품종으로 총 1,114분류군으로 확인되어 1차 조사 대비 140분류군이 추가되었으며, 이는 한반도 전체 관속식물 4,881분류군의 약 22.8%에 해당한다. 용도별로는 총 115,236건의 전통지식 중 식용(67.2%)이 가장 많고 그 다음으로 약용(17.9%), 용재용(4.9%), 유지용(2.5%), 관상용(1.3%), 섬유용(1.2%), 사료용(0.7%), 염료용(0.7%), 향신료(0.5%), 연료용(0.4%), 천렵(0.4%), 살충제(0.2%), 향료(0.1%), 기타(1.9%) 등의 순으로 나타났다. 본 연구에서는 민속식물의 이용에 대한 중요도를 알아보기 위하여 특정식물 종의 이용을 언급한 정보보유자의 수(FC: Frequency of Citations), 이용범주의 수(NC: Number of use-Categories), 특정식물을 이용하는 수(UR: number of User Reports)를 활용하여 문화적 중요도(CI: Cultural Importance), 상대적 인용빈도(RFC: Relative Frequency of Citations), 상대적 중요도(RI: Relative Importance) 및 문화적 가치(CV: Cultural Value)를 산출하여 우리나라에서 중요한 민속식물을 정량적으로 확인, 비교하였고 각 분류군별 지수가 제시되었다. 정량적 분석 결과, 상대적 인용빈도(RFC)는 참취, 문화적 중요도(CI), 상대적 중요도(RI), 문화적 가치 지수(CV)는 모두 소나무가 가장 높은 민속식물로 확인되었다.

• Korean journal of applied entomology
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• v.29 no.4
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• pp.244-251
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• 1990

Three viral insecticides were differently formulated with a nuclear polyhedrosis virus isolated from Spdodoptera litura by addition of feeding attractant, anti-precipitate of polyhedra, spreading agent, and UV-protectants. Sucrose was effective for attraction of larval feeding to increase the mortality and for protection of polyhedra from inactivation by sunlight when added 1% to 5% of sucrose solution to the formulations. Contents of additives to the formulations were 0.5% in polyvinyl alcohol to prohibit the precipitation of polyhedra and 0.1% in Triton X-100 to spread and wet the formulations to the plant. Inactivation of the virus under sunlight was decreased when added 800g of white carbon to 100 L of water in the white carbon formulation and 30% of molasses to the molasses's. In the formulation of white carbon and molasses mixtures, activation of the virus was increased when mixtured 500g of the former with 10% of the latter. Three formulations were persisted their pathogenicity more than 95% of mortality at 3 days p.i. Encapsulation of the polyhedral surface was more distinctively coated with the carbon and showed more effective in the residual effects of the white carbon than others, but the molasses more attractive for larval feeding.

• The Korean Journal of Pesticide Science
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• v.8 no.3
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• pp.162-167
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• 2004

In recent years, the diamondback moth (DBM), Plutella xylostella has become one of the most important pests for cruciferous plants in the world. A new type of the thiophosphoryl pyrazole insecticide, called KH502. Its outstanding insecticidal activity could be effective alternative against DBM. We investigated, using the comparative molecular field analysis (CoMPA) method, The structure-activity relationship of various thiophosphorylpyrazole derivatives and structure requirement for insecticidal activity. We found, the key substructures in pyrazole derivatives, the trifluoro-methyl group and the thiophosphoryl group. Both play an important role in insecticidal activity with the binding site. The three dimensional Quantitative Structure Activity Relationship (QSAR) analysis could provide useful information for the structural requirements of pyrazole insecticide as an insecticidal and the design of a new insecticide.

• Korean Journal of Plant Resources
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• v.13 no.3
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• pp.255-259
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• 2000

This study was conducted to evaluate the effect of pesticides on insect pest control of Aphides, growth characteristies and dry root yield from the cultivated after early maturing rice cropping. All pesticides treated had no effect on the growth period, flowering rate of Alisma plantago. The major pesticides were Methomyl-Lf, 24.1%., Imidacloprid-Wp, 10%., Car-bosulfan-Wp, 20%, and Methomyl-Wp,45%. Dry yield of root were increased largely with Imidacloprid-Wp, 10%(10g/20 ι), pesticide than the other pesticides and no control. All pesticides were had no injury with recommended concentration. On the other hand all pesticides were slightly harmful in the double dosage level for the Alisma plantago.

• Korean journal of applied entomology
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• v.60 no.2
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• pp.185-191
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• 2021

A Quarantine Pest Research Facility (QPRF) had been build in Animal and Plant Quarantine Agency and designed to ensure alien pests are safety contained inside the laboratory. Functions of QPRF including insect rearing, research, and physical containment facility were verified to check suitability as a research laboratory using the beet armyworm, Spodoptera exigua. As insect rearing and laboratory facility, S. exigua completed its development for 32.2 days at 25℃. Egg hatching, pupation, and adult eclosion showed 80, 86.6, and 90%. Two pesticides, fluxametamide and hydramethylnon showed high susceptibility against S. exigua larvae by spraying and dipping methods. As physical containment facility, male adults, which were artificially released from laboratory, did not capture in delta trap installed sex pheromone lure during winter season. Based on these results, QPRF will be used for study on alien insect species.

• Korean journal of applied entomology
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• v.55 no.2
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• pp.109-117
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• 2016

We investigated the control of Bemisia tabaci adults in tomato greenhouses using the eggplant as a trap plant with 4 systemic chemicals. The control effect of dinotefuran SG 50% on tobacco whitefly adults was 80% mortality, the highest than that cyantraniliprole, pyridaben and clothianidin, 51.0%, 12.4% and 11.0% respectively when all chemicals with recommended doses were used. Dinotefuran was applied at various doses and was observed to be most effective above 200ppm (88.4%)t. The control effect of dinotefuran lasted for appromimately nine 9 days and the density of tobacco whitefly adults increased there after. In field tests, the densities of tobacco whitefly adults on tomato shoots were highest at points 0, 15 and 20 m from the eggplant traps and lowest at 5 and 10 m. When the density of tobacco whitefly was low and the eggplants with dinotefuran SG 50% were placed in the tomato greenhouse at 10 m intervals, the overall density of tobacco whitefly adults was lower. In addition, densities were higher at the side of the greenhouse than in the interior and further away from the eggplant. When the density of tobacco whitefly was high and the eggplants with dinotefuran were placed at 5 m intervals, the density of tobacco whitefly at each 5 m point decreased. Theses results confirm that the eggplant is an effective trap plant for attracting tobacco whitefly audlts and combined with dinotefuran SG 50% decreases the density of tobacco whitefly in tomato greenhouses.

• Korean journal of applied entomology
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• v.61 no.1
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• pp.101-108
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• 2022

Because of their specificity to target insects and relatively low toxicity to non-target organisms, insect growth regulators (IGRs) have been regarded as attractive alternatives to chemical insecticides. Commercially available IGRs are classified into juvenile hormone agonists (JHAs), ecdysone agonists (EAs), and chitin synthesis inhibitors (CSIs) according to their mode of action. Recently, JH-mediated interaction of methoprene-tolerant (Met), which is JH receptor, and its binding partners have been replicated in vitro using yeast cells transformed with the Met and FISC/CYC genes of A. aegypti. Using this in vitro yeast two-hybrid β-galactosidase assay, juvenile hormone antagonists (JHANs) have been identified from various sources including chemical libraries, plants, and microorganisms. As juvenile hormone (JH) is an insect specific hormone and regulates development, reproduction, diapause and other physiological processes, JHANs fatally disrupt the endocrine signals, which result in abnormal development and larval death. These results suggested that JHANs could be efficiently applied as IGR insecticides with a broad insecticidal spectrum. This review discuses JH signaling pathway mediated by Met and future prospects of JHANs as environmentally benign IGR insecticides.

• The Korean Journal of Pesticide Science
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• v.20 no.1
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• pp.72-81
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• 2016

Feeding behaviors of the pear psylla, Cacopsylla pyricola, and their changing feeding behaviors were recorded and analyzed with an electrical penetration graph (EPG) analysis against 5 insecticides. And their mortality against insecticides were carried out in the laboratory. General feeding behavior patterns of C. pyricola were changed by insecticide treatments. Especially, the type and frequency of waveforms differently occurred depending on a sort of insecticides treated. Total duration of transition to waveform PE1 and phloem ingestion (waveform PE2) were significantly different between treatment and non-treatment of insecticides. When 5 different insecticides were treated on pear leaves, difference of feeding patterns were recorded. In case of treatment of benfuracarb, total duration of non-probes (waveform Np) was appeared higher than any other insecticide. However, when flonicamid and deltamethrin were treatment, total duration of stylet penetration (waveform PA) and xylem ingestion (waveform PG) were appeared higher than other insecticide, respectively. As results feeding behaviour of C. pyricola after treated insecticides with time-based consumed rate of C. pyricola, the rate of non-probe (waveform Np) was longer than start penetration (waveform PA), penetration and ingestion in parenchyma cells (waveform PC1+PC2), ingestion at phloem (waveform PD+PE1+PE2) and xylem (waveform PG). As result of direct spray treatment to C. pyricola, mortality of C. pyricola against imidacloprid was higher than any other insecticide on 24 hours after treatment. However, all of insecticides showed 100% mortality of after 48 hours. On the other hand, when 5 insecticides sprayed on the pear leaves and then C. pyricola located on the treated leaves, benfuracarb showed the most toxicity against C. pyricola among insecticides. These result was consistent with the EPG results that showed relatively longer total duration time of waveform Np (non-probes) by benfuracarb treatment.

• Asian Journal of Turfgrass Science
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• v.15 no.3
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• pp.119-126
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• 2001

The susceptibility of Ectinohoplia rufipes, insect pest of landscaping trees in golf courses to registered insecticides in golf courses was investigated. In addition, effect of host plants, Ainus firma, Prunus serrulata var. spontanae, and Osmantus asiaticus on susceptibility of E. rufipes were tested in laboratory with efficacy of some insecticides in laboratory and fields. The insecticides used in experiments were cabaryl 40%+phosalone 20% WP, chlorpyrifos-methyl 25% EC, chlorpyrifos 20% + diflubenzuron 7% n, deltamethrin 1% EC, ethopenprox 8% +diazinon 25% WP, and fenitrothion 50% EC. Mortalities of E.rufipes were 100% except chlorpyrifos-methyl. when A. firma leaves dipped in recommended concentration of given insecticides were supplied as food to adult of E. rufipes. LC$_{50}$s of insecticides were different depending on host plants, that is, those of deltamethrin were 0.21 ppm in Ο. asiaticus, 0.45 ppm in P. serrulata var. spontanae, and 0.77 ppm in A. firma. LC$_{50}$s of fenitrothion were 24.1 ppm, 64.0 ppm, and 11.0 ppm and those of chlorpyrifos-methyl were 97.2 ppm, 40.6 ppm, and 29.6 ppm, respectively. LC$_{50}$ was the lowest in Ο. asiaticus and that of chlorpyrifos-methyl and fenitrothion was the lowest in A. firma. Deltamethrin was the most effective against adult of E. rufipes in field like in laboratory and persisted in two weeks.weeks.

• Korean Journal of Food Science and Technology
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• v.12 no.3
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• pp.216-218
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• 1980

The appearance of organochlorine insecticides in 43 samples of refined vegetable oils including rapeseed, rice bran, sesame, perilla and corn oils produced in Korea in 1976 was investigated. Residue levels varied depending on the pesticide, oil source and production area. Gas-liquid chromatographic techniques were used to detect and quantify the presence of heptachlor, its epoxide, BHC, aldrin, endrin and DDT residues.