하천변에서 Deltamethrin 1.5% EC의 방역살포시 하천수 중 잔류변화 : 3. 단위면적당 잔류수준과 소여울에서의 잔류변화

이초롱,홍지형,임종성,이규승 한국농약과학회 2010 한국농약과학회 학술발표대회 논문집 Vol.2010 No.11

웰빙시대 농식품산업발전을 위한 한,일 공동 심포지엄 : 포스터 발표 ; 화학/분석 분야 : 루이보스(Rooibos)차 추출물의 항산화능 평가

이초롱,이기택 한국식품저장유통학회 ( 구 한국농산물저장유통학회 ) 2006 한.일 공동 심포지움 Vol.2006 No.1

비가림과 시설재배 조건시 포도 중 azoxystrobin과 cyenopyrafen의 잔류 특성

이초롱,홍지형,임종성,이규승 한국농약과학회 2011 한국농약과학회 학술발표대회 논문집 Vol.2011 No.4

이야기가 있는 음악놀이 해와 달이 된 오누이

이초롱,최아린 한국음악교육학회 2016 학술세미나 및 연수회 Vol.2016 No.-

Supplemental effects of biofloc powder on growth performance, innate immunity, and disease resistance of Pacific white shrimp Litopenaeus vannamei

이초롱,김수환,임세진,이경준 한국수산과학회 2017 Fisheries and Aquatic Sciences Vol.20 No.3

An 8-week feeding trial was conducted to study the effect of dietary supplementation of a biofloc powder on growth performance and non-specific immune response of Litopenaeus vannamei. Seven experimental diets were prepared with supplementation of graded levels of dried biofloc powder by 0, 0.5, 1.0, 2.0, 4.0, 6.0, and 8.0% (designated as Con, BF0.5, BF1, BF2, BF4, BF6, and BF8, respectively). Triplicate groups of shrimp (1.01 ± 0.01 g) were hand-fed with one of the diets four times a day. At the end of the feeding trial, significantly (P ˂ 0.05) higher growth performance and feed utilization were obtained in BF4 groups compared to those fed the Con diet. The innate immunity of shrimp was improved by the dietary supplementation of biofloc. Dietary inclusion of biofloc at the level of 4.0% significantly increased disease resistance of shrimp against Vibrio harveyi. The results indicate that biofloc might be used as a dietary supplement for growth performance, innate immunity and disease resistance of Pacific white shrimp.

Effect of Green Manure on Water-Stable Soil Aggregates and Carbon Storage in Paddy Soil

이초롱,김소휘,오유라,이상민,김유진 한국토양비료학회 2023 한국토양비료학회지 Vol.56 No.2

Green manure, used for eco-friendly agriculture, supplies organic matter (OM) and nutrients to soil and improvessoil fertility. Green manuring also has the potential to affect physical stability and carbon storage. Theobjective of this study was to investigate the effect of green manure on water-stable soil aggregates and carbonstock in paddy. Soil samples were collected from 3 treatments in Chungcheongnam-do Agricultural Researchand Extension Services on 29 April 2022; Control (CN), Green manure treatment (GM), and Chemical fertilizertreatment (NPK). Water-stable aggregate fractions (<53 μm, 53 - 250 μm, and >250 μm), carbon contents inbulk soil and aggregate fractions, and total carbon stock were analyzed. Carbon content in GM was 15% higherthan in NPK. However, there was no significant difference in soil carbon stock (Mg C ha-1) in GM and NPK. Water-stable aggregate ratio (%) and carbon percent of macro-aggregates (>250 μm) and micro-aggregates(53 - 250 μm) in GM were significantly higher than in NPK. As a result, green manure promoted soil aggregationand stabilized carbon in soil aggregates. These results confirmed that green manure, used for nutrientsupply, improves soil carbon storage and soil physical stability.

저수온기(13-15℃) 치어기 참돔(Pagrus major) 사료 내비타민 C 대체제로써의 감귤착즙박 및 발효감귤착즙박의 이용 가능성

이초롱,김유정,이경준 한국수산과학회 2015 한국수산과학회지 Vol.48 No.4

This study compared the effects of dietary supplementation of citrus by-product (CBP) and CBP fermented with Bacillus subtilis (F-CBP) on growth performance, feed utilization, intestinal histology and innate immunity of red seabream Pagrus major with three commercial immune-boosting products. The six experimental diets were supplemented with L-ascorbyl-2-polyphosphate (LAPP; the control diet), CBP or F-CBP at a concentration of 100 mg vitamin C equivalent/kg diet or one of three commercial immune boosters. The Experimental diets were fed to triplicate groups of 17 fish (initial body weight, 116 g) for 8 weeks. The water temperature during the feeding trial was maintained at 13-15℃. Growth and feed utilization did not differ significantly among the six dietary treatments, nor did the phagocytic activity, superoxide dismutase or total immunoglobulin concentrations. However, myeloperoxidase activity was significantly higher in the CBP groups. For the intestinal histology, the intestine diameter, villi and enterocyte heights and number of goblet cells did not differ significantly among groups. Therefore, CBP or F-CBP can be used as a valuable eco-friendly byproduct in diets for fishes including red seabream to maintain their normal growth and health.

유기농경지 밭 토양의 물리화학적 특성

이초롱,홍승길,이상범,박충배,김민기,김진호,박광래 한국유기농업학회 2015 韓國有機農業學會誌 Vol.23 No.4

The upland soils (56 samples) from organic farms in Gyeonggi-do (12 sites), Gangwon-do (8 sites), Chungcheong-do (14 sites), Gyeongsang-do (4 sites), Jeolla- do (18 sites) in Korea were collected and their physical and chemical properties were analyzed by RDA’s methods. In the results of physical property, the bulk density of soils averaged 1.14 Mg m-3 (surface soil), 1.38 Mg m-3 (subsoil), respectively. The porosity of them was 57%, 48%. Organically managed soil’s (OS) bulk density was lower than conventional soil’s but OS’s porosity was a little higher than conventionally managed soil in surface soil. The depth of plough layer in organically managed soils was 21.2 cm indicating that the organic farming had good effect on soil physical property. In the results of chemical property, the surface soil pH was 6.9 and the contents of organic matter (OM) was 26 g kg-1, available phosphate (Avail. P2O5) was 554 mg kg-1, exchangeable calcium (Exch. Ca) was 8.9 cmolc kg-1, exchangeable potassium (Exch. K) was 0.89 cmolc kg-1, exchangeable magnesium (Exch. Mg) was 2.0 cmolc kg-1. The subsoil pH was 6.8 and the contents of OM was 21 g kg-1, avail. P2O5 was 491 mg kg-1, exch. Ca was 7.9 cmolc kg-1, exch. K was 0.68 cmolc kg-1, exch. Mg was 1.8 cmolc kg-1. The nutrient accumulation emerged in organic farming. Compared to the optimum nutrient range for the conventional upland soils, the exceed rate of pH, OM, available phosphate, and exchangeable Ca, K, and Mg was 79, 52, 64, 84, 66% and 55%, respectively, which mainly resulted from the over-application of lime materials or livestock manure compost. With these results it is suggested that organic farm need to reduce the use of inputs, which make soil alkalification or nutrient accumulation. More study on effects of inputs on lowering soil pH from alkalification could help organically managed soil to be improved.

장기 유기농 실천 토양의 화학적 특성

이초롱,옥정훈,안민실,이상범,박광래,홍승길,김민기,박충배 한국유기농업학회 2017 韓國有機農業學會誌 Vol.25 No.1

본 연구는 유기농경지의 지속가능한 토양양분관리를 위해 유기농가의 자재의존도와 자 재에 의한 토양 특성변화를 알아보기 위하여 2016년 3월부터 6월까지 10년 이상 유기농을 실천한 토양의 화학적 특성과 함께 유기농가의 토양 관리를 위해 사용한 자재의 종류를 조 사하였다. 그 결과 유기농가에서는 토양 양분관리를 위해 주로 자가제조퇴․ 액비 및 시판자 재를 사용하고 있어 외부 투입자재의 사용빈도가 높음을 알 수 있었다. 그 중 57%는 가축 분뇨가 포함된 자재를 이용하여 토양관리를 하고 있었고 자재 성분분석 결과 가축분의 구 성 비율에 따라 자재의 성분함량이 다양하게 나타났다. 토양분석결과 10년 이상 유기농재 배를 한 지점의 양분함량은 대체로 높은 경향을 보였으며 농가에서 주로 사용하는 자재에 따라 토양 화학성이 차이가 나는 것을 알 수 있었다. 특히 가축분퇴비를 주로 사용하는 농 가는 교환성 칼슘과 칼륨이 과잉 존재하는 경향을 보였다. 또한 시판자재 분석결과 부숙유 기질비료는 가축분의 종류와 비율에 따라 성분함량 차이가 크게 나타났다. 이러한 외부투 입자재에 의존한 토양관리는 토양 내 양분 불균형을 야기할 수 있다. 토양 내 양분 불균형 은 작물 생산성을 악화시키고 환경오염의 우려가 있어 농가 및 연구현장에서 이를 개선하 기 위한 노력이 필요하다. 농가수준에서 토양 양분관리를 위해 사용하기 용이한 시판 부숙 유기질비료의 성분함량을 고려한 신중한 투입이 필요하며, 또한 이러한 유기농경지에서의 양분 불균형 해소를 위해 집적된 양분의 이용률을 증대시키는 방안에 대한 연구가 필요할 것으로 생각된다. To investigate the influence of long-term organic cultivation on soil characteristics, chemical properties of 35 soils in the national scale organically managed over 10 years were analyzed. 57% of soils which were managed by the materials containing livestock manure have higher nutrient concentration than the materials not containing livestock manure. The decomposed composts (containing livestock manure) had higher amount of P2O5, CaO, K2O than organic fertilizers (not containing livestock manure). In the results, the nutrient concentration of soils in long-term organically managed was higher than optimum range of upland soil, especially pH 6.9, available phosphorus (Av. P2O5) 744 mg/kg, exchangeable calcium 9.4 cmolc/kg, potassium 2.51 cmolc/kg. On the other hand, more than 50% of soils had lower concentration of exchangeable magnesium than optimum range (soil nutrient distribution was unbalanced). It is suggested that farmers have to be careful to apply organic materials, especially containing livestock manure.

한국고고학 디지털 사전구축 방안 연구

이초롱 국립문화재연구원 2023 헤리티지:역사와 과학 Vol.56 No.2

Although we have entered the era of digital transformation, there is currently no system that efficiently collects, manages, integrates, and services a large number of archaeological digital source materials produced as a result of cultural relics research, i.e., an intelligent integrated management and service platform for archaeological academic information. In this regard, the need to build a digital dictionary of Korean archaeology was confirmed by examining the problem of the Digital Encyclopedia of Korean Archaeology, which is currently available in PDF format on the web, the current status of the publication and use of the Dictionary of Korean Archaeology, and the cases of building digital platforms at home and abroad. Therefore, this paper aims to suggest a general direction for creating a digital encyclopedia of Korean archaeology based on the Dictionary of Korean Archaeology, which includes quality knowledge information, to reconsider the accessibility of archaeological data in conformity with data access limitations. The application of the series Dictionary of Korean Archaeology, published since 2001, and the necessity for digital transformation were examined, as well as the application of data from the archaeological data archiving platforms of Europe, the USA, Japan, and cases of establishing platforms corresponding to specialized encyclopedias from Korea. Based on these, a three-step implementation plan and detailed projects were suggested to create the Digital Encyclopedia of Korean Archaeology. Through this, we proposed the design of metadata for computerized records and the expansion to semantic (meaning-based) data that gives and shows the relationship information between the produced metadata as the implementation tasks to build the Digital Dictionary of Korean Archaeology. It is hoped that such research will help create an integrated intelligent management and service platform for archaeology, raise awareness, and provide a better understanding of Korean archaeology to the general public.