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이승찬(S.C. Lee) 한국차학회 1998 한국차학회지 Vol.4 No.1
This paper is to discuss the ecological characteristics and population fluctuations of major insect pests such as tea red spider mite (Tetranychus kanzawai), tea leaf roller(Caloptilia theivora) and smaller tea tortrix (Adoxophyes sp) in tea plants; also to discuss the activities of their parasitoids and predators; and finally to discuss the prospect of integrated pest management in the future. 1. Tea red spider mite occurred 11 generations a year under field-cage conditions. The average periods from egg to adult emergence were 13-25 days in spring and autumn, and 9-13 days in summer. The average longevities of adults were 28.0 days in spring and autumn, and 18.5 days in summer. The average number of eggs laid by a female wee 54.2 in spring and autumn, and 46.9 in summer. It overwintered in all stages. 2. Tea leaf roller had 6 generations a year under field-cage conditions. The average periods from egg to adult emergence were 34-38 days in spring and autumn, and 26-29 days in summer. The average longevities of adults were 6.5 days in summer, and 10.0 days in spring and autumn. The average number of eggs laid by a female were 58-67 during tea growing season. Tea leaf roller overwintered in pupal stage in southern region of Korea. 3. The moth populations of smaller tea tortrix showed four peaks a year observed by means of both the light trap and sex pheromone trap. The number of moths caught by sex pheromone trap were 2-4 times as much as those of light trap. 4. Hymenopterous parasitoids of smaller tea tortrix were 4 species such as Meteorus adoxophyesi Minamikawa (Braconidae), Eurytoma sp.(Eurytomidae), Tetrastichus sp., and Pediobius pygro (Walker) (Eulophidae). And also the parasitoids of tea laef roller were 4 species such as Stenomesius japonicus (Ashmead), Sympiesis ringoniellae Kamijo, S. dolichogaster Ashmead (Eulophidae), and Elasmus sp.(Elasmidae). A dominant pupal parasitoid of smaller tea tortrix was P. pygro. And major larval parasitoid of tea leaf roller was S. dolichogaster. Predatory mites of tea red spider mite were 6 species including Amblyseius longispinosus (Evans), A. eharai Amitei et Swirski(Phytoseiidae), Anystis bacoarun (L.)(Anystidae), Agistemus terminalis (Quayle) (Stigmaeidae), Oligota Yasumatsui Kistner (Staphylinidae), and Orius saueri Poppius (Anthocoridae). The key species of predacious phytoseiid mites was A. longispinosus. 5. The periods of A. longispinosus from egg to adult emergence were 22.8, 9.6, 4.8, and 3.6 days, at 15, 20, 25, and 30℃, respectively. Preoviposition periods of A. longispinosus at four different temperatures were 5.5, 2.4, 1.4, and 1.2 days; oviposition periods were 35.8, 20.7, 11.8, and 11.1 days; postoviposition periods were 29.3, 19.7, 15.8, and 14.4 days, respectively. The numbers of eggs laid by a female were 21.7, 28.1, 34.2, and 48.0 at the respective temperatures. A longispinosus overwintered under the ground refuses including weeds, fallen leaves and in the soil surface as adult females. 6. Amblyseius longispinosus gravid female consumed 3.0, 4.9, 15.7, and 19.4 eggs of T. kanzawai per day at 15, 20, 25, and 30℃, respectively. But a protonymph consumed 4.6 eggs, deutonymph 6.3 eggs, female during oviposition 19.4 eggs, and female during postoviposition 6.8 eggs of T. kanzawai per day at 30℃. 7. The functional response curve of the adult A. longispinosus to the density of eggs, larvae, and nymphs of T. kanzawai indicated Holling`s Type Ⅱ: the consumption of prey by the adult A. longispinosus increased with the prey density but the consumption rate decreased. 8. One of the greatest challenges facing scientists today is the need to develop and implement sufficient pest management systems suitable for use by farmers, hat are less costly and take ecological consideration into account. For a number of reasons, it is neccessary that tea pest management systems by developed and implemented with the sensible integration of all the possible metho
응애류의 약제 저항성에 관한 연구 II . Metasystox, Folidol 및 C-8514에 대한 과수응애류의 저항성과 방제시험
이승찬,유재기,Lee S. C.,Yoo J. K. 한국응용곤충학회 1971 한국식물보호학회지 Vol.10 No.2
약제 저항성 응애류를 효율적으로 방치하기 위하여 지역별 응애계통의 약제 저항성 수준을 조사하고 유기인제계의 저항성 응애계통에 대하여 화학적 group이 다른 Alternative acaricide로 방제 시험한 결과 1. 유기인제계 (Metasystox 및 Folidol)와 유기염소제계 (C-8514)에 대한 지역 별 응애계통의 저항성 정도를 보면. 가. Metasystox에 대한 사과응애는 인주감수성 계통에 비하여 충주계통이 96배 대구계통이 52배 예산계통이 4배 춘천계통이 3배 수원계통이 2배 가량의 저항성이 생겼고 점박이응애는 감수성계통에 비교하여 대구계통이 32배, 춘천계통이 29배, 예산계통이 25배, 그리고 수원계통이 17배의 저항성을 보였다. 나, Folidol에 대한 사과응애는 감수성계통에 비교하면 충주계통은 126배, 춘천계통은 48배, 예산계통은 33배, 화성계통은 30배 그리고 수원계통이 6배의 저항성이 생겼다. 다. C-8514에 대한 점박이응애 계통은 오산 감수성 계통에 비교하여 대구 계통이 59배 충주계통이 29배 그리고 경산계통이 19배의 저항성을 보였으며 사과응애는 춘천 감수성계통에 비교하여 대구계통이 42배, 수원 및 화성계통이 31배, 그리고 충주계통이 29배의 저항성을 나타냈다. 2. 유기인제계 저항성 사과응애에 대한 교체약제의 방제시험 결과 유기염소제계인 Kelthane MF,주석제인 Plictran, Carbonate계인 Morestan 그리고 혼합제인 K 114의 효과가 우수하였다. The study involved determination of resistance levels of spider mites to Metasystox, Folidol and C-8514 using slide dip technique: a feid trial of alternative acaricides using an O/P resistant strain. 1. Resistant strains of two-spotted spider mite( Tetranychus urticae Koch) were collected from Taegu, Kyungsan, Chunchun, Yesan, Suwon, Osan and Chungju, and kept in the glasshouse through the experiments. Resistant strains of European red mite (Panonychus ulmi Koch) were collected from Chungju, Taegu, Yesan, Chunchun, Suwon and Whasung, and Wonju susceptible was collected. Immediately after collection, tests were applied. All strains except susceptible populations had regularly been sprayed with Organo-phosphates including Parathion (or Folidol), Metasystox, Phenkapton and Trithion for more than the ten Bast years; and Organo-chlorines such as Kelthane and C-8514 more than five years. Comparisons of the resistant strains and susceptible strains at the $LC_50$ values are as follows: a. With Metasystox, resistance levels of the Chungju, Taegu, Yesan, Chunchun and Suwon resistant strains of P. ulmi were respectively, 96,52,4,3 and 2, times as resistant as the Wonju susceptible strain. b. With Folidol, resistance levels of the Chungju, Chunchun, Yesan, Whasung and Suwon strains of P. ulmi showed respectively, 126, 48, 33, 30 and 6-fold resistance levels over the susceptible strain. c. With C-8514, resistance levels of the Taegu, Suwon, Whasung and Chungju strains of P. ulmi were 42, 31, 30 and 20 times greater than the susceptible strain, respectively. d. With Metasystox, resistance levels of the Taegu, Chunchun, Yesan and Suwon, strains of T urticae were respectively, 32,29,25 and 17 times as resistant as the susceptible strain. e. With C-8514, resistance levels of the Taegu, Chungju and Kyungsan strains of T. urticae showed respectively, 59, 29 and 19-fold resistance levels over the Osan strain. 2. Field trials were carried out to assess the toxicities of eleven alternative materials which would be used for control of O/P resistant strain of Panonychus ulmi. The acaricide groups represented were 2 Organo-chlorines (Kelthane MF and Prethylen), 1 carbamate (Furadan), 1 nitrophenyl (Morocide), 1 carbonate (Morestan), 1 tin(Plictran), 1 fluorine (Nissol), 2 mixtures (Fundal and Banmite) and Organo-phosphate (Phenkapton). Of all acaricides tested Kelthane, Plictran, Fundal and Morestan were the most effective; fol]owed by Banmite, Furadan, Prethylen and Nissol. Sumite and Morocide were intermediate, but Phenkapton(Organo-phosphate) was very poor. In other words, a first application of the above outstanding materials gave very high degrees of control of O/P resistant population of European red mite for about 7 to 12 days. However, the results indicate that secondary application would sometimes be necessary. There was no foliage damage to apple trees by any of the acaricides tested of the concentrations used.
이덕규(D.-K Lee),이승찬(S.-C. Lee),김윤제(Y.-J. Kim) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.11
The organic thin film transistors (OTFTs) on a flexible substrate offer many advantages in the fabrication of low-cost sensors, e-paper, smart cards, and flexible displays. In this study, we simulated the electrical heat-generation and heat-transfer characteristics of the OTFT under various drain-voltages and channel lengths from 40㎛ and 90㎛. The characteristics were estimated by the measurement of various drain voltages (VD) at a fixed gate voltage (VG), viz., -40 V. The results showed that the generated maximum temperature in the pentacene channel rose nonlinearly as the drain voltage increased. The results also showed that the channel length did not effect on the electrical heat. The maximum temperature appeared in the side section of the channel between the Au Source/Drain (S/D) electrode and the pentacene layer. As a result, we found that because the top layer in an OTFT features poor chemical union between Au and pentacene, electrical heat was generated at the side section of the pentacene channel.
이승찬(S.-C. Lee),이덕규(D.-K. Lee),설영국(Y.-G. Seol),안종현(J.-H. Kim),이내응(N.-E. Lee),김윤제(Y.-J. Kim) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.5
The Organic Thin Film Transistor (OTFT) on flexible substrate electroplated electrodes has many advantages in the fabrication of low cost sensors, e-paper, smart cards, and flexible displays. In this study, we simulated 3-D OTFT with various voltage conditions by using COMSOL commercial package. Analysis model was limited with channel, gate, source and drain for research of thermal distribution. The channel interval is 40 urn and the voltage ranged between -20 and -40V. The OTFT was fabricated using pentacene as a semiconducting layer and electroplated Ni as a gate electrode. Electric properties of fabricated OTFT were characterized by I-V measurements and heat flux was predicted with the result of thermal distribution.