• The Korean Journal of Ecology
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• 제19권1호
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• pp.47-53
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• 1996

Effects of group breeding of herons on pine community were studied at Pomaeri, in Yangyang, Kangwon Province, Korea. This site has been protected as a Natural Monument (No. 229) since 1970. Herons have used this habitat as a breeding site from] anuary to October every year. In 1995, more than 500 herons were observed in this habitat. Many big pine trees are dying or already dead due to group inhabitation of herons, and no pine saplings were found at forest floor in this habitat. Nutrient contents of soil in this habitat were much higher than those in control plot. This must be due to the addition of feces from herons and of thin twigs and other organic materials from the canopy and bird nests. Species composition of herb layer in this habitat was quite different from that in control plot. Breeding site was dominated by Humulus japonicus. Persiearia perJohata, Persicaria thunbergii. and Commelina communis. which are indicator species of soil eutrophication.

• 한국초지조사료학회지
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• 제9권2호
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• pp.108-112
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• 1989

To determine optimal plant density of forage rape in southern areas of Korea, Velox, the highest yielding variety among seventeen introduced varieties of forage rape, was grown under five different plant densities. The results obtained are summarized as follows: 1. Yield components such as stem diameter, number of main stem,leaves, number of branches and number of branch leaves and fresh yield were highest at the plots with 50cm row spacing and 30cm plant spacing. 2. Dry matter yield, content of crude protein, IVDMD and digestible dry matter yield were highest at the plots of broadcasting. 3. Since plants under high density were high in plant length and small in stem diameter, contents of crude fiber such as NDF, ADF, cellulose and lignin were lowest at the plots of broadcasting.

• 한국환경과학회:학술대회논문집
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• 한국환경과학회 2003년도 봄 학술발표회 발표논문집
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• pp.261-262
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• 2003

Sunflower(Helianthus annuus L.) seedings were de-rooted and grown in nutrient solutions providing either deficient or sufficient boron supply and supplemented with aluminum. Increasing concentrations of aluminum in the nutrient medium caused progressive inhibition of root growth and a parallel increase in proline level of roots. Elevated boron levels improved root growth under toxic aluminum conditions and produced higher proline contents. Exogenous ascorbate improved adventitions root growth in plants supplied with insufficient boron and aluminum. These findings suggest that root growth inhibition resulting from either boron deficiency or aluminum toxicity may be a result of impaired ascorbate metabolism.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2002년도 춘계 학술대회지
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• pp.19-27
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• 2002

Development of crops with high quality as well as various beneficial functions is necessary to satisfy consumers being interested in their health and to enhance a competitiveness in the international market of agricultural products. What we have achieved so far from our research on crop quality was not sufficient since we often neglected sensory feature of crop products such as eating quality but in many cases, we put more emphases on nutrient contents, physico-chemical properties, and out-appearing features of the products. Therefore developments of sensory elements and technique for evaluation with a priority given to eating quality of each of an individual crop are important and very urgent to be solved in Korea. An endeavor to develop bioactive crops is necessary and resonable but aspects of both productivity and economy with a special emphasis on the original purposes such as production of energy and nutrient for human life must be considered. The development of more concrete ideas for crop functionality is essential before any research goes further.

• 한국식품조리과학회지
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• 제10권2호
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• pp.104-110
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• 1994

The purpose of this study was to evaluate implemented computer generated menus for foodservice in child-care centers. Computer generated menus, which were developed in the previous study, were based on the children's preferences and the bugets of the centers. Computer generated menus were implemented for food service in each national/public, foundation established, and employer-supported child care centers in Seoul, respectively. Plate wastes, preferences, and nutrient intakes of their meals of the existing menus were compared with those of computer-generated menus. The nutrient contents from their nutritional analysis of meals of the computer generated and existing menus satisfied the recommended dietary level (RDfU3). However, at the eaten of computer-generated menus satisfied RDA/3, and the existing menus lacked energy, Ca, Vit Bl, Vit B2 and Vit C. The meals served by computer-generated menus reduced the plate wastes and increased the acceptability of the children in day care centers.

• Asian-Australasian Journal of Animal Sciences
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• 제4권2호
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• pp.177-182
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• 1991

Nutrient evaluation of sago fibre showed that the fibre has potential and could be utilized as feed for ruminants. However, as a source of nutrients, it has limitations arising from low intake, digestibility, crude protein and minerals content. The present study showed that the sago fibre is low in crude protein (3.3%) and high in neutral detergent fibre (72.5%) and acid detergent lignin (25.8%) contents. Treatment of sago fibre with urea increased the crude protein content from 3.3 to 16.7%. Both urea and sodium hydroxide treatment decreased the neutral detergent fibre level from 72.5 to 59 and 56.5%, respectively. Rumen degradation of sago fibre by nylon bag showed that both urea and sodium hydroxide treatments increased dry matter and organic matter disappearance of the fibre significantly. In vivo digestibility of 2% urea treated sago fibre was 47.5% and intake of the fibre was 1.57% of body weight of the lamb.

• 한국작물학회지
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• 제47권
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• pp.1-14
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• 2002

Development of crops with high quality as well as various beneficial functions is necessary to satisfy consumers being interested in their health and to enhance a competitiveness in the international market of agricultural products. What we have achieved so far from our research on crop quality was not sufficient since we often neglected sensory feature of crop products such as eating quality but in many cases, we put more emphases on nutrient contents, physico-chemical properties, and out-appearing features of the products. Therefore developments of sensory elements and technique for evaluation with a priority given to eating quality of each of an individual crop are important and very urgent to be solved in Korea. An endeavor to develop bioactive crops is necessary and resonable but aspects of both productivity and economy with a special emphasis on the original purposes such as production of energy and nutrient for human life must be considered. The development of more concrete ideas for crop functionality is essential before any research goes further.

• International Journal of Industrial Entomology and Biomaterials
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• 제42권1호
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• pp.14-20
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• 2021

Mulberry was dried with low temperature vacuum dryer using microwave. The nutritional compositions of microwave-dried mulberry including proximate composition, sugar content, mineral content, total phenolic, flavonoids, and anthocyanin, beta-carotene, vitamin C, and amino acid composition were measured. Sugar contents of mulberry were 42.6 mg/100g (Cheongilppong) and 43.27 mg/100g dw (Gwasang No. 2). The main components of mulberry sugars were fructose and glucose. Mineral analysis showed that K, P, Ca, and Mg were abundant regardless of mulberry cultivars.

• 원예과학기술지
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• 제35권4호
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• pp.456-464
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• 2017

담액 수경재배에서 재배후반기 양액농도가 상추의 생장과 저장성에 미치는 영향을 구명하고자 4가지 양액농도(1/2S, 1S, 2S와 4S)를 '적치마'와 '청치마' 식물체에 처리한 후 생장과 수확후 특성을 조사하였다. 국화과 전용배양액($N-P-K-Ca-Mg=14.2-3.5-9-4-2me{\cdot}L^{-1}$)의 1배액으로 조성하여 3주간 재배한 후 2주간 양액 농도를 조절하여 재배한 결과 두 품종 모두 생체중 등의 생육량이 1배액이 좋았으며, 2배액과 1/2배액은 1배액보다 다소 떨어졌으며, 4배액에서는 생장 특성이 저하되는 것으로 나타났다. 색소 및 무기이온 함량에서는 4배액으로 처리한 상추가 높았다. 수확후 특성에서는 품종별로 2배액으로 처리한 상추가 저장기간 중 생체중 감소 및 SPAD 변화의 폭이 적었고, 외관과 같은 선도유지에 효과적인 것으로 나타났으며, 대체로 1배액, 1/2배액, 4배액 순으로 나타났다. 상추 수경재배 후기에 양액 농도교환에 따른 생육과 수확후 특성을 보면 재배 중에 최적의 생육량을 보인 양액 조성이 수확후 저장 및 품질유지 효과와 일관성을 보이지 않는 것으로 나타났다. 따라서 변화하는 농업 여건에 맞추어 수경재배에서 생산성 향상뿐만 아니라 향후에는 수확후 특성을 고려한 양액 조성과 재배 방법에 대한 개선이 필요한 것으로 보인다.

• 한국유기농업학회지
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• 제20권1호
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• pp.37-48
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• 2012

본 연구는 유기재배 배 과수원에서 녹비작물 재배에 의한 식물양분의 환원효과를 알아보기 위해서 수행되었다. 처리는 녹비작물 재배방법에 따라서, 1) 방임초생, 2) 겨울철 녹비작물 재배(호밀+헤어리베치), 3) 겨울철 녹비작물+여름철 녹비작물[그린솔고(수단그라스 품종($Sorghum$ $bicolor$ L.))+네마장황(클로타라리아 품종($Crotalaria$ $juncea$ L.))]으로 나누었다. 겨울철 녹비작물인 호밀과 헤어리베치는 각각 6.4kg/10a와 3.0kg/10a로 2008년 10월 17일에 파종하였으며, 여름철 녹비작물인 그린솔고와 네마장황은 각각 2.0kg/10a와 3.0kg/10a로 2009년 6월 4일에 전남 보성의 배 과수원 독농가에 처리하였다. 녹비작물의 건물중은 겨울+여름녹비작물>겨울녹비작물>방임초생 순으로 나타났다. 녹비작물의 건물중의 차이는 전질소와 인산 그리고 칼륨의 환원량에도 영향을 미쳤으며, 10-12년생 '신고' 배나무가 필요로 하는 질소와 인산 그리고 칼륨의 요구도에 비교해서 다소 많은 양을 공급한 것으로 판단되었다. 이러한 과다한 무기성분 공급량은 토양의 유기물과 칼륨 그리고 마그네슘 농도를 적정농도 이상으로 증가시켰다. 하지만 배나무의 영양상태의 지표인 잎의 무기성분은 녹비작물 연용에 따른 별다른 영향을 받지 않은 것으로 사료되었다.