• 한국환경농학회지
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• 제34권4호
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• pp.303-308
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• 2015

BACKGROUND: Recently, various rice by milling degree is sold for health and taste. To provide safe food to consumers, it is need to know the change of heavy metal contents according to milling degree of rice.METHODS AND RESULTS: This study was to investigate residual the levels of cadmium (Cd), lead (Pb), copper (Cu) and zinc (Zn) as stated in the milling degree of the rice contaminated Cd and Pb from 2011 to 2012 in Chungcheongnam-do. Rice samples exceeded the maximum residue limits (MRL) of Cd and Pb were milled by five degrees (0.0, 2.45, 8.02, 10.48, 15.09%). Milled rice was digested by microwave method, and analyzed heavy metal contents using ICP-OES. Recovery ratios of 4 heavy metals such as Cd, Pb, Cu and Zn were ranged for 79.7-98.9%, and limits of detection (LOD) and limits of quantitation (LOQ) were fulfilled with the normal analytical standards. Concentrations of Cd, Pb, Cu and Zn were ranged 0.416-0.433 mg/kg, 0.183-0.26 mg/kg, 3.639- 3.882 mg/kg and 16.868-19.801 mg/kg, respectively.CONCLUSION: From these results, conforming with increase of milling degree of rice, Cd, Pb, Cu, and Zn contents tended to decrease. The contents of heavy metals were decreased 3.1% in Cd, 29.3% in Pb, 6.4% in Cu and 15.1% in Zn, in according to the highest milling degree of 15.09%.

• 한국축산식품학회지
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• 제41권4호
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• pp.650-663
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• 2021

The objective of this study was to examine the relationship between meat quality attributes and the changes of sarcoplasmic protein acetylation and myofibrillar protein acetylation in lamb longissimus thoracis et lumborum muscles at different postmortem phases. Protein acetylation, color, pH, shear force, myofibril fragmentation index and cooking loss were measured. The total level of acetylated sarcoplasmic proteins showed a negative relation with pH, a positive relation with a^*, b^* and cooking loss at the pre-rigor phase. Sarcoplasmic proteins acetylation affected postmortem pH by regulating glycolysis, which in turn affects color and cooking loss. The total level of acetylated myofibrillar proteins showed a positive relation with shear force at the pre-rigor phase. Myofibrillar proteins acetylation affected meat tenderness by regulating muscle contraction. This study indicated that acetylation played a regulatory role of meat color, water-holding capacity, and tenderization process at early postmortem.

• 한국농공학회:학술대회논문집
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• 한국농공학회 1998년도 학술발표회 발표논문집
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• pp.47-58
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• 1998

This study is to try grading size and economic values in irrigation reservoirs for the purpose to maintenance management valuation technique. This use main irrigation reservoirs which are managed by Farmland Improvement Associations(FIA) to estimate grading of irrigation reservoirs for maintenance and management. In order to make efficient management on irrigation reservoirs, this study will be a basic data at a decision ranking of investment which are followed by conservation and maintenance management.

• 한국농공학회:학술대회논문집
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• 한국농공학회 1999년도 Proceedings of the 1999 Annual Conference The Korean Society of Agricutural Engineers
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• pp.130-136
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• 1999

The management method of the irrigation facilities are different with management agency , type, user, purpose of use, and the accuracy of data applied for the grasp of present situation and maintenance is of a low grade. Therefore the information management system is needed to classify and systematize the data. The purpose of this study is to prepare the digital map of Chonbuk FLIA district, to construct the database of the irrigation facilities , to develop the information system for the management using World Wide Web, to supply and be able to use easily to whomever needs it.

• 한국농림기상학회:학술대회논문집
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• 한국농림기상학회 2012년도 학술발표논문집
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• pp.137-138
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• 2012

• 한국전통조경학회지
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• 제34권4호
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• pp.110-118
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• 2016

2002년 유엔 식량농업기구(FAO)는 농촌공간이 보유하고 있는 다양한 자원 보전을 위해 세계중요농업유산제도를 만들고 세계적으로 가치가 있는 농어업유산을 지정하여 보전 관리하고 있다. 이러한 흐름에 발맞추어 한국에서도 2012년 농어촌에 가치 있는 자원을 보전 관리하고자 농어업유산제도를 도입하였다. 그러나 농어업유산에 대한 관심은 증대되었으나 한국 농어업유산만의 독특한 가치를 평가할 수 있는 기준이 정립되어 있지 않아 유산 발굴과 지정은 답보 상태에 놓여있다. 또한 기존 연구에서 개념적 측면의 연구와 유산 발굴을 위한 자원조사, 지표개발, 관광화를 통한 보전 관리 위주의 연구가 진행되고 있으나, 한국 농어업유산에 대한 가치 평가 기준에 관한 연구는 이루어지지 않고 있다. 이에 본 논문은 한국 농어업유산의 가치를 분석하고, 그 가치를 평가할 수 있는 기준을 제시하는 것을 그 목적으로 하였다. 이는 농어업유산의 발굴과 지정에 있어 한국 농어업유산의 가치평가 기준을 제시하여 농어업유산의 특성을 고려한 가치평가가 이루어질 수 있는 기반을 마련할 수 있을 것이며, 이러한 기준은 향후 농어업유산을 보전 관리하는데 기여할 것이다.

• 한국토양비료학회지
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• 제43권5호
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• pp.684-695
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• 2010

Geographic information system (GIS) is being increasingly used for decision making, planning and agricultural environment management because of its analytical capacity. GIS and remote sensing have been combined with environmental models for many agricultural applications on monitoring of soils, agricultural water quality, microbial activity, vegetation and aquatic insect distribution. This paper introduce principles, vegetation indices, spatial data structure, spatial analysis of GIS and remote sensing in agricultural applications including terrain analysis, soil erosion, and runoff potential. National Academy of Agricultural Science (NAAS), Rural Development Administration (RDA) has a spatial database of agricultural soils, surface and underground water, weeds, aquatic insect, and climate data, and established a web-GIS system providing spatial and temporal variability of agricultural environment information since 2007. GIS-based interactive mapping system would encourage researchers and students to widely utilize spatial information on their studies with regard to agricultural and environmental problem solving combined with other national GIS database. GIS and remote sensing will play an important role to support and make decisions from a national level of conservation and protection to a farm level of management practice in the near future.

• 한국토양비료학회지
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• 제46권5호
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• pp.399-407
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• 2013

Organic grape was generally produced in rainshield or plastic greenhouse culture while most of fruits were produced in open field. But little attention has been given to soil properties with different culture facilities in organic grape cultivation. This study was conducted to investigate soil physico-chemical properties of organic grapes farms with different culture facilities and soil management practices. Organic fertilizer was main resource to manage soil at organic grapes farms. Organic grapes farms were applied with total amount of organic fertilizer at one time, either at basal or additional fertilization, whereas conventional grapes farms applied with split fertilization. Bulk density and penetration resistance of soil were lower at both rainshield and green manure-applied plastic greenhouse cultures than those at clean plastic greenhouse culture. Especially, in plastic greenhouse, sod culture with natural weed after green manure application was more effective than general sod culture in improving physical properties of the rhizosphere. The contents of organic matter, available phosphate and exchangeable potassium tended to increase in the soils applied with green manure, and the difference of soil chemical properties were significant between rainshield and plastic greenhouse cultures. The optimum soil management was required in plastic greenhouse because pH, available phosphate and exchangeable cations reached over optimum range. Consequently, the ground cover management is the key factor to affect the chemical properties as well as soil physical properties extensively in plastic greenhouse. It is found that sod culture with natural weed after green manure application resulted in enhancement of utilization efficiency of nitrogen, phosphoric acid and potassium in soil in comparison with general sod culture.

• 한국농공학회지
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• 제32권E호
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• pp.1-19
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• 1990

Abstract Over the last several decades, crop production in the United States increased largely due to the extensive use of animal waste and fertilizers as plant nutrient supplements, and pesticides for crops pests and weed control. Without the application of animal waste best management, the use of animal waste can result in nonpoint source pollution from agricultural land area. In order to increase nutrient levels and decrease contamination from agricultural lands, nonpoint source pollution is responsible for water quality degradation. Nonpoint source pollutants such as animal waste, ferilizers, and pesticides are transported primarily through runoff from agricultural areas. Nutrients, primarily nitrogen and phosphorus, can be a major water quality problem because they cause eutrophic algae growth. In 1985, it was presented that Watershed/Water Quality Monitoring for Evaluation BMP Effectiveness was implemented for Nomini Creek Watershed, located in Westmoreland County, Virginia. The watershed is predominantly agricultural and has an aerial extent of 1505 ha of land, with 43% under cropland, 54% under woodland, and 3% as homestead and roads. Rainfall data was collected at the watershed from raingages located at sites PNI through PN 7. Streams at stations QN I and QN2 were being measured with V-notch weirs. Water levels at the stream was measured using an FW-l Belfort (Friez FWl). The water quality monitoring system was designed to provide comprehensive assessment of the quality of storm runoff and baseflow as influenced by changes in landuse, agronomic, and cultural practices ill the watershed. As this study was concerned with the Nomini Creek Watershed, the separation of storm runoff and baseflow measured at QNI and QN2 was given by the master depletion curve method, and the loadings of baseflow and storm runoff for TN (Total Nitrogen) and TP (Total Phosphorus) were analyzed from 1987 through 1989. The results were studied for the best management practices to reduce contamination and loss of nutrients, (e.g., total nitrogen and total phosphorus) by nonpoint source pollution from agricultural lands.

• 한국농공학회논문집
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• 제56권5호
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• pp.21-27
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• 2014

Sediment-laden water is problematic in aquatic ecosystem and for hydraulic structures in a watershed, and agriculture area in a watershed is one of source areas of nonpoint source (NPS), since soil surface typically exposures due to agricultural activities. Especially, severe sediment might flow into stream when agricultural area is located near stream like the Imha-dam watershed. Soil erosion is affected by precipitation, therefore there is a need to consider precipitation characteristics in soil erosion and best management practices (BMPs) simulation. The Web-based Spreadsheet Tool for the Estimation of Pollutant Load (STEPL WEB) allows estimating long-term sediment loads and the impact of best management practices to reduce sediment loads. STEPL WEB and predicted precipitation data by MIROC-ESM model was used to estimate sediment loads and its reduction by filter strip and conversion of agricultural area to forest in the future 30 years. The result indicates that approximately 70 % of agricultural area requires filter strip installation or that approximately 50 % of agricultural area needs to be converted to forest, for 41 % of sediment load reduction.