• Journal of Sericultural and Entomological Science
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• v.10
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• pp.89-97
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• 1969

우리나라의 잠사업은 농가의 소득증대와 수출산업으로서 계속 성장해 왔다. 그러나 지금까지는 양적인 광대에 치중한 나머지 질적인 면에서 미흡한 점이 있어 국제수준에 비하면 그생산수준이 상당히 낮은 실정에 있다. 그러므로 잠사업이 계속 안정된 산업으로 성장발전해 나가자면 무엇보다 생산량과 직결되는 양잠농가의 기술적인 개량과 경영의 합리화를 꾀하여 생산성의 향상을 기하고 생산비를 절감하여 농가의 실질소득을 증대시키는 동시에 국제시장에 있어서의 경쟁력을 강화해야 할 것이다.(중략)

• Journal of Sericultural and Entomological Science
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• v.35 no.2
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• pp.145-148
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• 1993

생산성 저해 요인의 제거는 바로 생산성 향상으로 연결된다. 뽕밭의 생산성을 저해하는 요인은 여러가지지만 그 중에서 토양의 이화학적 불량과 농약 공해가 비중이 가장 크다고 볼 수 있다. 우리나라 뽕밭은 입지가 경사지에 많으므로 토심이 얕은데 비해, 뽕나무는 영년성 심근성 작물이므로 식재후 근권의 물리성에 따라 생산성이 좌우되는 비중이 매우 크다. 그러나 식재후 토양 물리성 개량은 화학성 개량보다도 어려우므로 그 결과 생산성이 낮은 상태를 벗어날 수 없다. 따라서 정기적인 심경이나 심토 파쇄를 통한 물리성 개량이 요망된다. 계속적인 금비위주의 비배관리에 의해 강산성 반응을 보이는 토양이 대부분이므로 석회에 의한 산성개량이 필요하다. 질소질의 과다시비는 수량을 감소시킬 뿐만 아니라, 엽질을 악화시키고 질산태 질소가 지하로 흘러 들어가 지하수의 오염을 일으켜 청색증과 암을 일으키는 원인이 될 수 있다. 심각한 정도로 축적된 인산과 칼리도 수량을 떨어뜨리고 환경을 해치는 원인이 되므로, 축적 양분의 재활용에 대한 연구가 계속되어져야 한다. 특히 사용의 편리성 때문에 고농도의 복합비료 위주의 비배관리가 반복되고 있는 실정이므로 토양검정을 받아서 단비를 이용하여 적정한 시비를 해야 할 것이다. 이러한 방법은 생산성의 향상, 영농비의 절감, 공해의 유발을 억제하는 여러가지 효과가 있다. 농약과 산업공해로부터 양잠의 보호를 위해서는 안전지대에 잠업의 단지화, 인근 농과와의 대화를 통해서 양잠에 안전한 농약을 사용토록 하는 한편, 연구분야에서는 심도 있는 연구를 통해 양잠농가를 보호할 수 있는 대책의 수립이 요망되고 있다. 종합해서 말하자면 연구기관의 심도있는 연구가 더욱 활발히 이루워져야 할 것이며, 농민은 개발된 새기술에 보다 깊은 관심을 갖고 활용하는 한편, 필요로 하는 기술을 연구기관에 개발을 요청할 정도의 적극적인 자세가 요구된다. 또한 연구기관의 농민의 중간 교량역할을 하는 지도부문에서도 보다 적극적인 활동이 요청된다.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.30 no.3
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• pp.12-20
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• 2012

This study was carried out to investigate the backgrounds and spatial characteristics of the sericulture in the rear garden of the palace in Joseon Dynasty. Joseon Dynasty made the various efforts not only to enhance the promotion of agriculture but also sericulture since the main industry of Joseon Dynasty was farming. At the very beginning, Joseon Dynasty planted mulberry trees and built a silkworm-raising room(蠶室) around the Donggung(東宮). Then, King Sungjong(成宗) made Chaesangdan(採桑壇) in Changgyeong Palace and performed Chinzamryae(親蠶禮). The location of Chaesangdan varied as time goes on until the king Gwanghaegun(光海君). Lastly, King Yeongjo(英祖) made Chaesangdan and Junghaechinzambi(丁亥親蠶碑) in Gyeongbok Palace. Yeongjo(英祖) showed a strong attachment to Gyeongbok Palace and actively encouraged the sericulture. Chaesangdan was built in the east side of the palace which was appropriate for planting mulberry trees. Furthermore, a silkworm-raising room was located in this place at the era of King Sejong(世宗).

• Korean journal of applied entomology
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• v.59 no.4
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• pp.451-454
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• 2020

Sericulture is a main insect industry in Sangju (Kyungpook, Korea). This study reports an occurrence of a viral disease in the sericulture farms in 2020. More than 20% silkworm larvae (Bombyx mori) suffered diarrhea and melted tissues with pathogenic lethality at 4th or 5th instars. PCR diagnosis showed a positive response against B. mori nucleopolyhedrosis virus (BmNPV) infection. Tissue extract of the infected larvae was applied to healthy larvae by a leaf-dipping method and exhibited the same viral symptoms. The viral extract was used to be overlaid on Sf9 cells. The infected Sf9 cells showed polyhedra in the cytoplasm. These results indicate that the silkworm larvae reared in the sericulture farms in Sangju were infected with BmNPV.

• Korean journal of applied entomology
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• v.61 no.2
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• pp.283-288
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• 2022

The study aimed to investigate the psychological effect of the emotional insect-assisted healing program on the stress experienced by 43 children in a community child center. Silkworm (Bombyx mori [Linnaeus]) was used in the healing programs, and the stress was measured using salivary alpha-amylase levels. Saliva samples and a survey on insect preference were collected before and after the healing programs, respectively. After the program, the satisfaction score for participation was evaluated. Results indicate that the emotional insect-assisted healing programs led to statistically significant lowering of salivary alpha-amylase levels and increased the preference for insects. The children's satisfaction in the healing program activities using silkworms was 4.23 points out of 5.

• Journal of Sericultural and Entomological Science
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• v.38 no.2
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• pp.186-188
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• 1996

곤충애 있어서 호르몬의 작용기작과 그 이용에 관하여 요야하면 다음과 같다. 곤충호르몬에는중추신경계의 신경분비세포에서 합성, 분비되는 peptide의 neuropeptide hormone (PTTH, bombyxin, diapause hormone등)이 있고, 상피계의 내분비선에서 합성, 분비되는 sesquiterpene의 유약호르몬 ( juvenile hormone)과 steroid의 탈피호르몬 (ecdysone)이 있다. 곤충호르몬은 특정한 표족세포에 있는 수용체와 높은 특이성과 높은 친화성을 가지고 결합해서 세포의 작용을 조절한다. 일반적으로 peptide hormone은 표적세포의의 세포막을 통과할 수 없으므로 표적세포의 막표면에 있는 수용체와 결합하는 것에 의해 세포내 대사제를 활성화시킴으로서 peptide hormone의 특이적인 발현이되는 것으로 알려지고 있다. 한편, ecdysone과 같은 steriod hormone이나 juvenlie hormone은 표적세포의 세포막을 용이하게 통과할수 있으므로 세포내의 세포막을 용이하게 통과할 수 있으므로 세포내로 들어가 수용체와 결합해서 hormone-receptor comlpex는 핵내로 들어가 DNA의 특이적인 영역에 결합하므로서 이들 호르몬 특이적인 기능이 발현되는 것으로 알려져 있다. Ecodysone의 활성이 있는 ecdysteroid가 여러 식물에서 발견되고 있어, 금후 양잠의 상족에 이용이 기대되고 있다. 또한, 향유약호르몬(AJH) 활성물지인 imidazole계 화합물은 양잠에 있어서 세섬도고치 생산에 그 이용이 기대되고 있다.

• Journal of Sericultural and Entomological Science
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• v.14 no.1
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• pp.25-35
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• 1972

This investigation was carried out to find the effects of silkworm rearing technique on the harvesting amounts. In spring and autumn of 1971, 14 silkworm rearing farmers at Botong Ri and Youngsoo Ri, Chongnam Myun, Hwaseung Kun, Kyunggi Do in Korea were selected as sample farmers. They were devided into two groups, high productivity group and low productivity group according to their harvesting amounts per box of silkworm eggs in 1970. The high productivity group represents the farmer who produced above average harvesting amounts per box, and the low group represents below average group. In this investigation, all farmers were adjusted to share uniform rearing condition with even mulberry leaves. Under this uniform condition, the effects of rearing techniques on the harvesting amounts per box of silkworm eggs and the effects of rearing condition on the harvesting amounts were inferred. Results obtained are as fellows; (1) Measuring from the 14 sample farmers, the effect of rearing technique on the harvesting amounts per box covers 15% of farmers in spring rearing season but 33% in autumn season. (2) Measuring from these sample farmers, the effects of the nutrition condition is less than 56% in spring rearing season but less than 69% in autumn, and it can be concluded that these effects include the effect of climate factor. (3) In the low productivity group. the most important facto. affecting the low productivity is non-disinfection of rearing environment.

• Journal of Sericultural and Entomological Science
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• v.37 no.1
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• pp.57-61
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• 1995

In order to isolate naturally occuring novel B. thuringensis strains, we identified the distribution of B. thuringiensis from soils of sericultural farms(spring and autumn season, respectively) of various regions in Korea. A total of 82 strains of B. thuringiensis producing spore and crystal were isolated. We examined oral toxicity against lepidopterous larvae, Bombyx mori, dipterous larvae, Culex pipiens and coleopterous, Sitophilus oryzae. The results showed that 82 B. thuringiensis isolates from sericultural farms were isolated and most isolates were toxic to lepidopterous larvae. Particularly, B. thuringiensis strains which is lepidopterous-active, lepidopterous-and dipterous-active were widely distributed. Also, non-toxic B. thuringiensis isolate was common.

• Journal of Sericultural and Entomological Science
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• v.18 no.1
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• pp.17-19
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• 1976

These surveys were carried out to investigate of damage of agricultural chemicals, tabacco, and factory smoke on silkworm rearing Autumn in 1975 1. Damaging rate in chemicals, tabacco and factory smoke was 1.4, 0.6 and 0.1 percent each other. 2. In damage by agricultural chemicals, it appeared to be chemicals for rice (49.4%) orchard (21.2%) and vegetable (12.3%) in order. 3. Status of damaging rate in tabacco showed 60 and 18 percent in tabacco field and tobacco drying place near mulberry field. and showed 14 and 8 percent in rabacco drying place and tabacco field near rearing house. 4. The damage of factory smoke is largely stone powder of cement.

• Journal of Sericultural and Entomological Science
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• v.44 no.1
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• pp.19-21
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• 2002

Suwonppong, which is the leading mulberry variety, has the fertility and the characteristics of fruit that are listed bellow. The percent of making seed is 61.8%, the percent of sank seed is 54.7% and the percent of germination is 95%. the percent of cross success is 31.8%. The single fruit weight of mulberry fruit is 3.58 g and its size is medium and big, the color of it is black. The sugar content of mulberry fruit is 15.7%(Brix), the total acidity is 0.18%, and the pH is 6.3. The maturing period of mulberry fruit is medium maturity and the degree of fruit setting is the same as Cheongilppong.