• Proceedings of the Korean Society of Crop Science Conference
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• 2017.06a
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• pp.289-289
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• 2017

The climate change impact has facilitated double cropping system on maize production in Korea. The objectives of this study were to investigate the chemical composition changes according to the sowing dates on double cropping in 8 dent type, 2 intermediate type, and 4 semiflint type of Korean maize (Zea mays L.) hybrids and evaluate its antioxidant characteristics. Fourteen maize hybrids were sown on April 5 and July 5 of 2015. The average crude protein contents in dent and semiflint type maize sown on April 5 were higher than those sown on July 5 (p<0.05). There was no significant difference in average of total amino acid contents in all types of maize according to the sowing dates. Major amino acid in maize hybrids were glutamic acid followed by proline, alanine, and aspartic acid, which has no significant difference according to the sowing dates. The average crude fat contents in semiflint and intermediate type maize sown on April 5 were higher than those sown on July 5 (p<0.05). The average composition of saturated fatty acid in dent type maize sown on April 5 was higher than those sown on July 5. However, the average unsaturated fatty acid composition showed the opposite result (p<0.05). Fatty acids were mainly composed of linoleic acid (C18:2) and oleic acid (C18:1) in maize hybrids. The average oleic acid percentage of dent and semiflint type maize sown on April 5 were higher than those sown on July 5, while the average linoleic acid was lower. The average amylose content of all types of maize sown on April 5 was higher than those sown on July 5. On the other hands, the average carotenoid contents had the opposite result (p<0.05). There were no significant differences in total average of polyphenol contents and DPPH and ABTS radical scavenging activities in all types of maize based on the sowing date. Total polyphenol contents had positive correlation with DPPH (r=0.33, p<0.01) and ABTS (r=0.50, p<0.0001) radical scavenging activities. In conclusion, the kernel composition affects maize quality. These data are useful for maize breeding program and cultivation and food processing industry.

• Journal of Korean Society of Rural Planning
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• v.15 no.4
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• pp.51-57
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• 2009

The regional development methods, which had carried out in the rural area had many legal and systematic problems in establishing plans for the region itself, and in finding and practicing various business. Recently, new government revised the budget system and introduced the block grants system to overcome this limitation. Due to this, plans and enforcements of subsequent rural development projects are expected be a significant change. The study suggests the 'theme cluster development' method for accomplishing the regional specialization and competitiveness and examines the procedure of application in practice through the regional development plan of Sunchang-gun, Jeonbuk province.

• Proceedings of the Korean Society of Community Living Science Conference
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• 2005.06a
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• pp.190-191
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• 2005

• Korean Journal of Agricultural Science
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• v.50 no.4
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• pp.903-916
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• 2023

This study aims to establish basic data for efficient management of rural water by analyzing regional irrigation facilities and benefitted areas in the statistical yearbook of land and water development for agriculture at the watershed level. For 511 domestic rural water use areas, water storage facilities (reservoirs, pumping & drainage stations, intake weirs, infiltration galleries, and tube wells) are spatially distributed, and the benefitted areas provided at the city/county level are divided by water use area to provide agricultural water supply facilities. The characteristics of rural water district areas such as benefitted area, were analyzed by basin. The average area of Korea's 511 rural water districts is 19,638 ha. The average benefitted area by rural water district is 1,270 ha, with the Geum River basin at 2,220 ha and the Yeongsan River basin at 1,868 ha, which is larger than the overall average. The Han River basin at 807 ha, the Nakdong River basin at 1,121 ha, and the Seomjing River basin at 938 ha are smaller than the overall average. The results of this basic analysis are expected to be used to set the direction of various supply and demand management projects that take into account the rational and scientific use and distribution of rural water and the characteristics of water use areas by presenting a quantitative definition of Korea's agricultural water districts.

• Journal of Agricultural Extension & Community Development
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• v.15 no.1
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• pp.1-21
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• 2008

This study was designed to figure out the results of proceeding research, to establish the recipients and service contents, and to develop handbook for elderly-elderly care in the rural area. The results of the study were as follows: The recipients of services were contained to healthy elderly from troubles elderly, solitude elderly, and old couple in the community. The range of the services by elderly-elderly carer were moral support, everyday life support and outside activity support. The handbook listed four areas of services including first meeting and observing, mind care, everyday life care, and outside activity care, and then described contents of 47 situations. The handbook will be great help to the rural elderly if it is given to participants of elderly-elderly care program along with the hall for the aged. Further efforts should be made to reflect feedbacks from rural area, and to make series to bring elderly carer up to date consistently.

• Journal of the Korean Institute of Rural Architecture
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• v.9 no.2
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• pp.75-85
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• 2007

This study is purposed to setting up leisure facilities for provincial teenagers. And this center will be constructed facilities considering young boys and girls's need in geochang-gun. It is carried out those as follows;(1) it is, first of all, examined architectural factors concerned about an demand of young boys and girls in geochang-gun;(2) it is, secondly, established spaces and programs that it is analyzed an alternative proposal considering merits and faults;(3) it is, finally, suggested facilities of It's. The result of study, A development planning of "geochang-gun leisure cultural center" is suggested that it is induced to 'cultural building', 'physical exercise facilities' and 'a boarding house for students of the back regions'. It is, Ultimately, focused development of leisure facilities on demands and feelings of teenagers in a rural area.

• Proceedings of the Korean Society of Community Living Science Conference
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• 2006.09a
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• pp.63-68
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• 2006

• KOREAN JOURNAL OF CROP SCIENCE
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• v.64 no.1
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• pp.25-32
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• 2019

This study was carried out to investigate the changes in fatty acid composition and phytosterol content of the autumn sowing waxy corn during its ripening period for the production of high quality and value-added fresh ears. The content of crude oil in the waxy corn kernels steadily increased with days after pollination(DAP); the crude oil content in Heukjinjuchal (HC) was higher than that in Ilmichal (IC). The composition of fatty acids according to DAP showed a statistically significant change; palmitic and linoleic acid composition gradually decreased, but oleic acid increased, and the composition of unsaturated fatty acids in HC was higher than that in IC. The phytosterol content was increased until 33 DAP, and was 937.7 mg/100g and 867.9 mg/100g in IC and HC, respectively, but there was no statistically significant difference between the varieties. The phytosterol contents in IC varied in the following order: ${\beta}-sitosterol$ > stigmasterol > campesterol, but that in HC varied in the order ${\beta}-sitosterol$ > campesterol > stigmasterol. The campesterol content did not show significant differences between the varieties, but the stigmasterol and ${\beta}-sitosterol$ content was significantly higher in HC than in IC. Palmitic, linolieic, and linolenic acid were significantly correlated with campesterol and ${\beta}-sitosterol$, and stearic acid was positively correlated with stigmasterol. Oleic acid was positively correlated with campesterol and ${\beta}-sitosterol$ but negatively correlated with stigmasterol. As a result, it was suggested that fatty acids may affect the variation in phytosterol contents during the ripening period in waxy corn.

• Journal of Korean Society of Rural Planning
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• v.30 no.1
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• pp.67-79
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• 2024

The Comprehensive Rural Village Development Project, a resident-led bottom-up regional development project, began in 2004. This study investigated difficulties and problems in the operation process after the completion of the project, and future improvement plans, through in-depth interviews with the former and current chairman of the steering committee, steering committee members, and office managers, targeting three regions in Jeollanam-do, 15 years after the completion of the project. As a result of the survey and analysis, it was effective in improving the living environment and characteristics of each village and revitalizing the area. And while there were well-run facilities depending on the type of project, there were also many idle facilities. In the case of communal facilities, there was a high possibility of problems in operation and management when the scale of the new building was large. Conflicts occurred between villages in the process of independently operating the area after the completion of the project. Therefore, it is necessary to provide an S/W project program to prepare for after completion. Local governments need to utilize City and County Capacity Enhancement Projects to support regional leaders to participate in educational programs after completion and provide guidance and supervision for village operations.

• Proceedings of the Korean Society of Crop Science Conference
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• 2022.10a
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• pp.205-205
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• 2022

Sorghum (Sorghum bicolor L.) is a major cereal grain crop of the world and It can be cultivated under high temperature and dry condition with high adaptability to the adverse environment. It is usually eaten with rice in korea and most of domestic sorghum cultivars have been developed by pure line selection and cross breeding. In prior studies, Hybrid cultivar (F1 seed) was known to improve 30-40% in yield and resist to disease and pest than pure line varieties due to hybrid vigor. Therefore, study on the hybrid sorghum is continuously necessary. In korea, hybrid sorghum cultivar have been developed, so we need to find methods seed production technology for supply and commercialization of hybrid seed cultivar. Female inbred line(A-line) and male inbred line(R-line) are needed for hybrid seed production. This study was carried out to investigate growth characteristics and yield of hybrid sorghum according to the seedling period and planting rate between female inbred line(YSA1) and male inbred line (Sodamchal, Miryang 19). When the flowering period of two inbred groups in the process of hybrid seed production is coincides, hybrid seed production is increase. The female inbred line and male inbred lines were cultivated at Daegu in 2021. Two inbred lines were sown at intervals of 3 days and 7days and were evaluated flowering period. As a result, the flowering period of the female inbred line and male inbred lines were matched at the 7days interval. To find out optimal planting rate, two inbred lines were cultivated under different plating rate (4:2, 5:2, 6:2). Yield of YSA1/Sodamchal(F1) was the highest 130(kg/10a) in the 4:2 ratio and yield of YSA1/Miryang 19 was the highest quantity of 139(kg/10a) in the 6:2 ratio. The results of this study could be helpful for hybrid Sorghum seeds production.