• Journal of Korean Society of Forest Science
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• v.12 no.1
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• pp.59-63
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• 1971

In the light of the fact that Cryptorrhynchus lapathy Linne (Coleoptera: Cur-culionidae) is an important past of poplar in korea the Bionomics of the insect were studied to get some basic informations for controlling the insect. The results obtaind are as follows; 1. The poplar and willow borer has one generation in a year overwintering with egg. 2. The pupation stage was from the middle Julne to the middle July. 3. The adult appears from the early July to the middle August. 4. The average length of body of adult was about 8.5cm with female, 7.9cm with male and the length of pupa was about 11.3cm. 5. The average longevities of adults were about 30 days with mate and 40 days with female. 6. The length of damage hole were about 10.3cm. 7. The egg-laying period was from July to August.

• Proceedings of the Korean Aquaculture Society Conference
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• 2003.10a
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• pp.116-116
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• 2003

명천산, 카마이시산, 나루산, 풍남산, 기장산, 울산산 미역(Undaria pinnatifida)의 성숙 포자체는 각각 2001년 5월에 명천 배양장에서 채묘하였다. 인공 채묘와 채묘의 주요방법은 손(1993)에 따랐다. 재배미역의 번식생태학과 생산량이 우수한 형질을 규명하기 위하여 2001년 12월부터 2002 4월까지 명천산, 카마이시산, 나루산, 풍남산, 기장산, 울산산 미역(Undaria pinnatifida)에 대해서 고흥군 명천 어장과 계도 어장에서 양식실험을 실시하였다. 형태적 형질에 있어서 명천, 계도 어장에서 전장은 3월까지 급격한 성장을 보였으나 4월 이후 성장이 점점 완만해 지면서 감소하였다. 품종간에도 전장의 성장도가 달리 나타났으며 그중 가장 큰 것은 가마이시산이었고 가장 작은 것은 울산산이었다. 경장은 3월까지 지속적인 증가를 보였으며 6품종중 1품종은 증감하였다. 품종별로 경장의 변화는 달리 나타났다. 각 어장별 품종별로 줄기길이는 대부분이 월별로 증가하다 4월부터 감소하였다. 그러나 명천산은 4월까지 증가 하였다. 성실엽장은 6품종 모두 4월까지 지속적인 증가를 보였으며 특히 풍남산과 가마이시산이 두 어장에서 크게 나왔으며, 울산산이 두 어장에서 가장 작게 나타났다. 명천 어장에서 6품종의 전장과 경장의 상관계수는 카마이시산이 가장 크게 나타났고, 울산산이 가장 작게 나타났다. 계도 어장에서도 카마이시산이 가장 크게 나타났으며 울산산이 가장 작에 나타났다. 전장과 줄기길이의 상관계수는 명천어장에서는 풍남산이 가장 크게 나타났고, 울산산이 가장 작게 나타났으며, 계도 어장에서는 카마이시산이 가장 크게 나타났고 울산산이 가장 작게 나타났다. 명천 어장에서 전장과 성실엽장의 상관관계를 보면 명천산의 상관 계수가 가장 크게 나타났으며 나루토산이 가장 작게 나타났다. 계도 어장에서는 카마이시산이 가장 크게 나루토산이 가장 작게 나타났다. 명천, 계도 어장에서 전장과 각 형질간 ANOVA 분석은 1%~5% 수준에서 품종별로 모두 유의성 있게 나타났다.

• Journal of Aquaculture
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• v.17 no.1
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• pp.81-88
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• 2004

Annual gametogenic cycle of Manila clam Ruditapes philippinarum collected from Shi-Heung-Ri beach in Jeju was investigated for the 12 month period from May 2001 to April 2002. Water temperature varied from 10 to 27$^{\circ}C$ and salinity from 27 to 35 psu during the course of study. Most of the clams collected in March were in indifferent or in early developing indicating that clams initiated gametogenesis when water temperature becomes 14 to 15$^{\circ}C$. In early June, most of the clams were in developing, expanding follicles and exhibiting growing oocytes. Fully ripe gonads were observed in clams collected during late June to early August. Spawning clams were observed as early as in early June although the spawning activity reached its maximum in early August. Condition index (CI) was rapidly increased from July to early August and then dropped in late August, indicating that most of clams in Shi-Heung-Ri beach spawn in late summer when water temperature was within a range of 25 to 27$^{\circ}C$.

• Research in Plant Disease
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• v.11 no.1
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• pp.10-15
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• 2005

The occurrence of melanose was investigated on yuzu at Goheung and Boseong in Jeonnam province in 1997 and 1998 seasons. The disease occurrence on leaf was initiated from late May in 1997 and early May in 1998, severest in late of June on leaf, and in case of fruit, initiated from early July in 1997 and late June in 1998 with a peak in early August. The disease was occurred in twenty days more earlier in 1998 season than 1997 season. We think this was caused by temperatures during April and May. And it was supposed that the disease severity on the severest late of June was closely related to the rainfall and relative humidity during June. The disease severity was severer in old tree than the young.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.65 no.4
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• pp.284-293
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• 2020

Rice consumption in Korea has been decreasing as the eating habits of the Korean people have diversified with rapid economic growth. Recently, floury endosperm rice cultivars were developed to boost rice consumption and replace wheat flour consumption with rice flour, which is vulnerable to viviparity under wet weather during the grain-filling stage because of its loosely packed starch granule structures. To overcome this limitation, it is necessary to find a suitable rice transplanting date to produce high-quality rice flour by altering the heading ecology type and changing the cultivation time by region. We examined four floury endosperm rice cultivars (FERC) in the Cheongju (central plain area) and Boeun (mid-mountainous area) regions of Korea from 2017 to 2019. Of the FERCs, the mid-late maturing types (MMT) Seolgaeng (SG), Hangaru (HGR), and Shingil (SGL) exhibited high yield and yield components after transplanting May 30 in both regions; the early maturing type (EMT) Garumi 2 (GRM2) also exhibited high yield after transplanting June 20 in Cheongju. In addition, MMTs showed the same tendency as the characteristics shown in Cheongju when grown in the Boeun region, and EMT displayed high yield and yield components after transplanting June 10. The FERCs could easily present pre-harvest sprouting in the rainy season during the grain-filling stage after 20 days post-heading because the mean temperature and frequency of more three-day rainfalls have increased over the last 5 years from the previous annual averages. Viviparity of HGR and GRM2 decreased as the transplanting date was delayed, with decreases of 2.3%-4.6% in HGR and 11.9%-23.1% in GRM2 according to the region. SGL was generally resistant to viviparity because of the Tongil type. To minimize pre-harvest sprouting and produce high yield of rice flour in the Chungbuk province, the most suitable transplanting time was the end of May in MMT and the middle and end of June in EMT.

• Journal of the KSME
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• v.44 no.9
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• pp.67-73
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• 2004

1994년 10월 21일 발생된 성수대교 붕괴사고, 그 해 12월 7일 서울 아현동 도시가스 폭발 사고, 다음 해 4월 28일 대구 지하철 가스폭발사고, 2개월 뒤인 6월 29일 발생하여 500명의 사망자를 낸 삼풍백화점 붕괴사고, 2003년 2월 18일 대구 지하철 화재사고, 모두들 기억하고 있는 최근의 국내 사고 목록이다.(중략)

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.24 no.2
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• pp.65-70
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• 1988

A series of echo-sounding and current measurements as well as the drogue and drift bottle experiments were carried out in the mouth of the Nakdong river from April 1986 to August 1987: Several sand bars and sea channels are formed by reclaiming and dredging work in the river. The main stream of the river is separated into east and west branch channel. The tidal current speed of the west channel is faster than of the east channel in 1986, but is reverse in 1987 to that in 1986.

• Proceedings of the Korean Environmental Sciences Society Conference
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• 2000.05a
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• pp.243-244
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• 2000

낙동강 중류에서 조사된 식물플랑크톤상은 7강 42속 77종류였고 Bacillariophyceae가 43종류(55.8%), Chlorophyceae 24종류(31.2%), Cyanophyceae 4종류(5.2%), Dinophyceae와 Euglenophyceae이 각각 2종류(2.6%), Chrysophyceae와 Cryptophyceae가 각각 1종류 (1.3%)였다. 주요종은 Stephanodiscus hantzschii를 비롯한 6속 7종류였고 모두 규조류였다. 현존량은 최저 79 cells/$m{\ell}$(3월, 고령)에서 최고 33,023 cells/$m{\ell}$(2월, 물금)로 나타났다. 우점도지수는 최저 0.434(8월, 남지), 최고 0.999(1월, 2월, 물금)였다. 종다양성지수는 최저 0.026(2월, 물금), 최고 3.073(9월, 남지)로 조사되었다.

• 주택과사람들
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• no.2 s.19
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• pp.89-90
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• 1991

1. 전체 허가동향 ''91.10월중 건축허가면적은 잠정집계 결과 전년동기대비 $39.7\%$ 감소한 것으로 나타났으며, $1\~10$월 누계치는 $4.2\%$ 감소하였음. 이는 주거용 건축에서 전년대비 $59.9\%$ 감소한 것에 기인함. 2. 용도별 허가동향 $\circ$ 주거용 건축 ''91. 10월중 주거용 건축은 전년대비 $59.9\%$ 감소하였으며, $1\~10$월 누계치는 $6.4\%$ 감소하였음. (사유) 5개 신도시의 공동주택사업승인분 감소가 주된 요인으로 작용하였으며, 주거용 건축물의 재건축을 제한한 9.4조치의 영향이 있었음. $\circ$ 상업용 건축 ''91.10월중 상업용 건축은 전년대비 $19.9\%$ 증가하였으며, $1\~10$월 누계치는 $6.5\%$ 감소를 나타냄. (사유) 건축제한조치가 10월부터 일부해제(수도권 이외로서 인구 30만 이하 도시의 일부 상업용 건축물)됨에 따라 상업용 건축이 증가되었으며, 이러한 증가가 ''90. 10월에 건축제한조치로 인하여 허가면적이 대폭 감소된데 대한 상대적 증가로 나타남. $\circ$ 공업용 건축 ''91.10월중 공업용 건축은 전년대비 $3.0\%$ 증가하였으며, $1\~10$10월 누계치는 $5.5\%$증가로 나타남.

• Korean Journal of Medicinal Crop Science
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• v.5 no.3
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• pp.206-210
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• 1997

The pathogenic fungi associated with blight of leaf and stem in peony were leaf spot (Alternaria sp.), powdery mildew (Erysiphe aquilegiae) and rust (Cronartium flaccidum). The infection of leaf spot and powdery mildew begins from late April to midMay and rust was infected in early June. Blight time of aerial part in peony started from late May and the ratio of blight on leaf and stem was more than 50% in late Aug. Yields of root by the incidence time of blight of leaf and stem were 69.1% in late June, 65.4% in late July and $87.6{\sim}92.7$% in August and September. The number of root of more than 10mm in root diameter blighted in late June and July was much lower than in August, but the paeoniflorin content in the former was much higher than the latter.