• Journal of Sericultural and Entomological Science
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• v.34 no.2
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• pp.71-74
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• 1992

우리나라 양잠의 안정적 성장 발전을 위해서는 생산기반의 재정비 및 호당 양잠 규모의 확대가 필요하다고 하는 것은 누구나 다 아는 사실이다. 따라서 이를 위한 생산체계의 획기적인 탈바꿈의 하나로 애누에 공동육을 함으로써 농가에서 누에의 사육기간을 단축하는 것이 시급히 요청된다고 림은 "잠사업이 국제 경쟁력 제고를 위한 기술적 대응방안"에서 주장한 바가 있었다. 1. 전제조건 1) 애누에 공동육이 꼭 이루어져야 한다. 2) 뽕밭 생산성이 저해 받아서는 안 된다. 3) 성력 기계기구 개발 및 지원이 이루어져야 한다. 4) 가장 중요한 것은 잠작안정이다. 5) 각 잠기별 표준관리된 잠종이 공급되어야 한다. 6) 각 수견 시기에 맞추어 고치공판이 이루어져야한다. 2. 누에 사육시간 선정 1) 뽕나무 생리를 감안한 가지뽕 수확법에 따른 누에 사육기간은 춘잠기는 5월 하순부터 6월 중순까지이고 추잠기는 9월 초순부터 하순까지이다. 2) 병충해 방제관리상으로는 하잠 및 초추잠만이 문제점이 있다. 3) 잠작에 따른 사육기간은 춘잠기는 5월 하순부터 6월 중순까지이며 추잠기는 9월 초순부터 중순까지잠작이 양호하다.(중략)

• Asian Journal of Turfgrass Science
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• v.22 no.1
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• pp.35-48
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• 2008

Seasonal and regional occurrence of oriental beetle, Blitopertha (=Exomala) orientalis was investigated using pheromone traps and soil sampling at three golf clubs in Busan, Gunpo, and Gimpo from 2004 to 2007. Adults of Blitopertha orientalis were found from early June to late August, but peak times were different depending on the location and year. Peak day of adult occurrence of B. orientalis was 25 June,2006 and 22 June 2007 in Busan, but 30 June,2006 and 29 June,2007 in Gunpo. Mean numbers of B. orientalis adults attracted to pheromone trap varied with locations. Larval development was faster in Busan than in Gunpo. The 2nd instars of B. orientalis was found on 27 August, 2004 in Gunpo whereas 3rd instars were found in Busan in the same period. In Busan, overwintered 3rd instars pupated from early May to mid-June and emerged from early June. Eggs laid at this time were hatched from late June Most 3rd instars were found at middle August and started to overwinter. The peak time of mating was 20:00 to 22:00 hour of the day.

• Korean Journal of Environment and Ecology
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• v.33 no.1
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• pp.16-27
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• 2019

This study was identified the survey period and emergence of main species of dragonfly species, an indicator species that can identify the characteristics of wetland ecosystem. I surveyed the species and population of dragonflies once every two weeks from May 2015 to October 2016(29 times). From January to March, November and December were excluded from the cluster classification because the dragonflies were not observed. In April and October, the species was emerged but it was not suitable because it could not represent the time of the seasons. When we divide by month, it was able to judge from April to June as spring. Except the May, there were some changes due to rainfall and temperature, and sometimes June was included in the summer season. June, July and August correspond to summer, and September and October fall in Autumn. In June and October, the change was expected due to the effects of temperature and so it was judged as a partial fit. Looking at the change of the species, Coenagrion johansson and Paracercion calamorum were increase at the spring, and then Crocothemis servilia mariannae, Paracercion calamorum, Anax nigrofasciatus, Lyriothemis pachygastra, Orthetrum melania were abruptly enlarge in summer. At last, Sympetrum kunckeli, Lestes temporaris tended to be higher in Autumn.

• Korean Journal of Environmental Biology
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• v.33 no.1
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• pp.27-33
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• 2015

Fish assemblages in the coastal waters off Gampo in the East Sea of Korea were analyzed using the samples of fishes collected with bottom trammel gill nets June, September, and December 2005 and, March 2006. During the study period, a total of 32 fish species, 695 individuals, and 180,012.0 g representing 21 families were collected. The fish assemblages predominantly consisted of Ditrema temminckii, which accounted for 52.4% of the number of individuals and 40.4% in the biomass. The next major specimens were Hexagrammos otakii, Sebastes schlegelii, Stephanolepis cirrhifer, Sebastes taczanowskii, Halichoeres poecilopterus. These six fishes accounted 77.6% of total number of individuals and 77.5% of total biomass. The number of fish species, the number of individuals and biomass were fluctuated with month. The number of species was highest in June 2005 and lowest in March 2006. The number of individuals and biomass was highest in September 2005 and lowest in June 2005.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2020.12a
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• pp.52-52
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• 2020

병아리콩은 두류 중 콩, 땅콩, 강낭콩, 완두 다음으로 중요한 작물로 chickpea, garbanzo bean 이라고도 불리며, 원산지는 터키 동남부와 시리아로 알려져 있다. 병아리콩은 전세계 50개국 이상에서 재배되며, 인도에서 전세계 생산량의 66%가 재배되고 있다. 병아리콩은 Desi (microsperma)와 Kabuli (macrosperma)의 두가지 형태로 구분된다, Desi형은 꽃색이 분홍색, 종피가 두껍고 종피색이 유색이 특징, Kabuli형은 백색꽃에, 백색이나 미색 종피 양머리 종자형태를 보인다. Desi 형은 아시아와 아프리카, Kabuli 형은 서아시아, 북아프리카, 남미와 유럽 등지에서 주로 재배된다. 본 연구에서는 인도, 미얀마, 우즈벡, 조지아, 불가리아, 우크라이나 등 6개국에서 수집한 자원의 농업형질을 평가하고 비교하여 활용을 위한 정보를 제공하고자 수행하였다. 꽃색의 분포는 분홍색이 백색보다 2배 많았으며 조지아, 인도와 미얀마 수집 자원은 80% 이상이 분홍색, 우크라이나, 우즈베키스탄에서는 백색이 최소 75%이상으로 조사되었다. 소엽의 크기는 종자의 크기와 밀접한 관련이 있으며 인도와 미얀마, 불가리아에서는 소립종, 조지아, 우크라이나에서는 중립종의 비율이 높았다. 개화기는 6월 상중순에 집중되었으며 인도와 미얀마 수집자원의 개화기가 6월 상순 이전으로 빠르고 우크라이나 자원이 6월 하순과 7월 상순으로 늦은 경향을 보였다. 올해는 6월 중순부터 지속된 강우로 개화 후 정상적인 결실이 어려웠으나 6월 하순부터 성숙하기 시작하였고, 인도와 미얀마 수집자원은 주로 7월 상순에 나머지 수집 국가들은 7월 하순 이후에 성숙하였다. 올해의 기상이변으로 보다 정확한 평가를 위하여 차년도에 재평가를 수행하고자 하나 올해의 양적, 질적 형질의 경향치를 이용하여 수집국간의 농업형질을 비교하고, 식품소재의 다양화 다변화 추세에 맞추어 도입작물 활용을 위한 기초자료로 제공하고자 한다.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.26 no.2
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• pp.133-142
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• 1990

For the purpose of investigation of demersal fisheries resources of the East China Sea, joint research between Hokkaido University and National Fisheries University of Pusan was carried out during the period from November 5 to November 12 in 1989. This joint research is due to continue for the next three years. In this report, the authors analyzed the catch of 24 draughts of trawl operating by the Oshorumaru of the training ship of Hokkaido University in the north area of the East China Sea, in order to hold the present condition of the demersal resources. The specimens collected were composed of 76 species of fishes, 6 of mollusca and 7 of crustacea. And the main species of the large catch were Raja kenojei, Zeus faber, Miichthys miiuy, Collichthys lucidus, Dentex tumifrons, Carangoides caeruleopinnatus, Trachurus japonicus, Parastromateus niger, Trichiurus leptulus, Scomberomorus niphonius, Pampus argenteus, Pampus echinogaster, Psenopsis anonala, Liparis tanakai, Thammaconus modestus, Tadarodes pacificus, Loligo edulis, and Portunus trituberculatus. Especially, Trichiurus leptulus, Pampus agrenteus and Thammaconus modestus had different modes of classes of body size individually, with changing of fishing ground. But, Tadarodes pacificus, Loligo edulis and Portunus trituberculatus were caught the maxed sizes of body individually in the same ground.

• Journal of The Korean Society of Grassland and Forage Science
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• v.40 no.1
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• pp.50-56
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• 2020

The field experiment was carried out to evaluate changes of dry matter productivity and feed value of Italian ryegrass and triticale at different growth stages in Wonju from 2018 to 2019. Italian ryegrass and triticale forages were harvested at an interval of seven days from May to June. The dry matter yield of Italian ryegrass with 7,870 kg/ha harvested on May 16 was significantly higher than that harvested on May 3 and May 9. The dry matter yield of triticale with 12,050 kg/ha harvested on June 7 was significantly higher than that harvested from May 3 to May 16. The crude protein yields harvested on May 16 were 890 kg/ha for Italian ryegrass and 1,103 kg/ha for triticale and were significantly higher than those harvested on May 3 and May 9. The total digestible nutrient yield(TDN) of Italian ryegrass with 5,223 kg/ha harvested on May 16 was significantly higher than that harvested on May 3 and May 9. The total digestible nutrient yield of triticale with 8,277 kg/ha harvested on June 7 was significantly higher than that harvested during May, but not different from that harvested after June 7. Considering the dry matter yield, crude protein yield and total digestible nutrient yield, it is suggested that the optimal harvesting times for Italian ryegrass and triticale seem to be May 16 and June 7, respectively.

• Journal of Korean Society of Forest Science
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• v.99 no.4
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• pp.528-533
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• 2010

Cage plots were established in 2008 to find the relationship between combination of tended Japanese red pine sapling and the habitation of Monochamus alternatus, a vector for pine wood nematode. Japanese red pine sapling tended at different times were successively put into the cage, and then the adult of Monochamus alternatus was put in June. Presence or absence of the larva was determined November. Sapling tendings were done at seven successive times in 2009, mid- and late February and March, mid-April, May and June. Some saplings were also tended in mid-October of 2008, the previous year of this experiment. The larva was found in all the saplings tended later than mid-March in 2009. No larva was found in the saplings tended in mid-October of 2008 and those in February of 2009. In case of the combination the by-products of mid-February and late March of 2009 and mid-October of 2008, the larva was found in the by-product of mid-February and late March of 2009, but those in mid-October of 2008 was not. When the saplings tended in mid-October of 2008 and mid- and late February of 2009 were put into the cage singly, the larva was found in all the saplings. Results indicated the mixture of the saplings tended at different times affected the habitation of Monochamus alternatus differently.

• Journal of Bio-Environment Control
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• v.4 no.2
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• pp.211-222
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• 1995

This experiments were carried out to investigate the growth responses of spinach to temperature controlling by shading treatments at different times during the summer, and the effects of environmental parameters on the growth and yield were evaluated. The fourth cultivation was showed maximum temperature at air temperature of 33.1$^{\circ}C$ and soil temperature of 28.6$^{\circ}C$, followed by third, second, fifth and first cultivation. Among the tested temperature decreasing by shading, shading with silver - coated PE film strips was the most effective in lowering greenhouse air temperatures by showing 1.1$^{\circ}C$ decrease as compared to the outside air temperature and 3.1$^{\circ}C$ decrease as compared to the air temperatures inside the non-shaded PE house and 2.3$^{\circ}C$ decrease as compared to the air temperaturese shading with black- coated PE film strips, the soil temperature was showing 2$^{\circ}C$ decrease in both shading treatments than non-shaded PE and outdoor. In first cultivation, difficult cultivated as compared to others period owing to bolting of spinach. This first period was cultivated used two domestic cultivars and six imported cultivars, significantly better growth and higher yield of spinach were recorded in glory, manchuparuk and sunlighr cultivars. The effectiveness of shading on spinach, as expressed by the crop yield increase, was the highest in the planting from July 1 to August 24.

• Korean Journal of Environmental Biology
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• v.23 no.3 s.59
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• pp.304-314
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• 2005

The occurrence of cyanobacterial bloom in Korean lakes of the summer is generalized. The characteristic of cyanobacterial community was explored. And the developmental stage of cyanobacterial bloom was divided into three phases, 'preparatory phase', 'bloom phase' and 'extinction phase' Cyanobacterial bloom started during the end of June at site 1, transition Bone of Lake Daecheong. The period of water bloom in normal year was about 60~70 days at site 4, lacustrine Bone, but it was unusually 11 days from July 19 in 1999. M. aerugilnosa first occurred in June, had a peak of standing crop curve from the end of August to the beginning of September in 1998 and 2002 and the end of July in 1999 and 2001. The standing crop of M. aeruginosa occupied $68.1\%$ of phytoplankton, $74.2\%$ of cyanobacteria and $88.8\%$ of genus Microcystis, Anabaena spp. first occurred in April, was above 10,000 cells $mL^{-1}$ from the end of August to about the middle of September in 1998. The effect of rainfalls on cyanobacterial bloom was different according to the phases. The rainfalls of preparatory phase assist the growth of cyanobacteria, but accelerate the decrease of cyanobacteria in extinction phase. In bloom phase, the heavy rainfalls reduce the development of the bloom, while the slight ones display only a little effects.