• 한국유기농업학회지
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• 제32권2호
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• pp.247-265
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• 2024

본 연구는 두당 사료작물 재배면적을 기준으로 0.1 ha 이상을 순환 농가로, 0.01-0.1 ha 사이는 일부 순환농가로, 0.01 ha 이하는 비순환 농가로 구분하여 유기 가축의 모델 구축을 위해 국내 유기 및 자체인증 한우 사육 12농가를 대상으로 질소 유입량과 배출량을 항목별 로 2022년 4월부터 2023년 3월까지 조사하였으며 순환 유형별 질소 수지를 평가하였다. 순환 유형별 자가생산 사료 급여비율은 순환 유기 한우 농장이 44.4%, 일부 순환농장이 15.0%인 반면 비순환농장에서는 4.2%였다. 퇴비의 자가 농경지 자체순환율은 순환농장 98.8%, 일부 순환농장 63.8%, 비순환농장 26.5% 이였으며, 비순환농장의 외부반출비율은 73.5%로 높았다. 연간 두당 질소 수지는 순환농장에서 42 kg, 일부 순환농장 47 kg, 비순환농장은 55 kg로 순환농장이 비순환농장보다 낮았다. 농경지 1 ha당 연간 잉여 질소량은 순환농장 234 kg, 일부 순환농장 1,161 kg, 비순환농장 5,476 kg로 순환 및 일부 순환농장이 비순환농장보다 매우 낮았다. 질소이용율(NUE)은 순환농장에서 54%, 일부 순환농장 36%, 비순환농장 29% 로 순환농장이 일부 순환 및 비순환농장보다 높았다. 결론적으로 한우 두당 사료작물 재배면적이 높은 순환 유기 한우 농장이 비순환 한우 농장보다 질소 수지에서 잉여 질소가 적고 NUE가 높은 결과를 나타내었다. 유기 한우 사육 농장의 질소 수지를 낮추기 위해서는 사료작물 재배 포장을 확보하여 외부 구입 사료량을 줄이는 동시에 가축분뇨 퇴비의 자가이용 순환율을 높이는 자원순환형 생태 유기농업으로 전환이 필요하며, 이를 통하여 유기 축산 농가가 경제성과 환경 생태적으로 지속 가능한 유기 축산의 실현이 가능할 것이다.

• 한국유기농업학회지
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• 제20권4호
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• pp.563-576
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• 2012

The Purpose of this paper is to establish development strategies for sustainability of environment-Friendly agriculture based on farm awareness analysis. To analysis farm management, a series of farm household surveys were conducted on farmers residing in Embong-Myun. The sample size of the survey is 108 respectively. As a survey result, satisfaction level about market stability and understanding of upper organization is high, on the contrary, awareness of related organization is low in a relative sense. Most of farmers reveal their intention to sustain environment-Friendly agriculture but future agriculturalist and an ageing society that one face as well. In order to establish development strategies for sustainability of environment-Friendly agriculture, an infrastructure should be consistently expanded. On the other hand, self-supporting ability of farmer's organization and education system attempt to expand for sustainability.

• 한국해양환경ㆍ에너지학회지
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• 제5권1호
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• pp.68-75
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• 2002

본 조사는 유기오염원으로 지적되고 있는 진해만내 수하식 양식장을 대상으로 저서생물상을 이용한 환경 평가를 실시하여 저서환경내 유기오염 양상을 측정하였다. 굴과 진주담치 양식장과 양식활동이 이루어지지 않은 대조구 등 세 개 정점을 대상으로 퇴적물 특성과 저서동물을 조사하였다. 세 지역 모두 평균 입도분포가 6.0~6.6Ф로 니질 퇴적상을 나타냈다. 퇴적물 내 유기물 함량은 진주담치 양식장이 2.8%로 놀게 나타났으며, 대조구의 경우 1.5%로 나타났다 총 7개 동물군, 79종의 저서동물이 채집되였으며, 대조구가 양식장에 비하여 저서생물의 종 다양성과 서식밀도가 높은 상이한 군집구조를 나타냈다. 특히, 굴과 진주담치 양식장에서는 퇴적물내 유기물 함량이 높은 지역에 나타나는 기회종으로 알려진 Lumbrlneris longlfolia, Heteromastus. filiformis, Corophium sinenie 등이 우점하였다. 계절별로 종조성과 서식밀도에서 다소 차이를 보임에도 불구하고, 생물상을 이용한 환경평가 결과에서는 진주담치 양식장의 경우 대조구나 굴 양식장에 비해 유기오염이 진행되고 있는 것으로 나타났다.

• 한국유기농업학회지
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• 제24권3호
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• pp.369-383
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• 2016

Crop yield insurance program in Korea has rapidly grown not only in quantity but in quality for 15 years since it was introduced in 2001. Despite growth of Crop insurance, performance evaluation for crop yield insurance has not fully been evaluated at the farm, consumer and national level. The purpose of this study is to conduct the performance evaluation for crop yield insurance through estimating the effects of farm revenue stabilization and social welfare increase with three popular insurance items: apple, pear and sweet persimmon. Based on the analysis of social welfare effect, cost-benefit analysis of operating crop yield insurance was conducted at the national level. We found that crop yield insurance stabilizes farm revenue based on the estimated four risk indicators: Coefficient of Variation, Value at Risk, Certainty Equivalence, and Risk Premium. The result of cost-benefit analysis shows that crop yield insurance increases social net benefit by 44.1 billion won for the three items. As a result, crop yield insurance program has contributed remarkably on social welfare as well as farm management and its role will be more important in the future.

• 한국유기농업학회지
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• 제30권2호
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• pp.255-277
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• 2022

This study investigated consumers' perception of fruits and vegetables grown in smart farms to stimulate the sale of agricultural products grown in smart farms. To this end, a survey was conducted on 1,050 consumers. The main results are as follows. First, 58.6% of respondents knew about smart farms, and they perceived fruits and vegetables grown in smart farms as more valuable than those grown in conventional facilities. In the detailed values, values of safety and environmental damage reduction were perceived to be of greatest value among five values. Second, as a result of investigating the importance of smart farm cultivation information in comparison with price, the most respondents emphasized both smart farm cultivation information and price information, and smart farm cultivation information was compared with price information. Cases were investigated to be more important with slight differences. Third, 41.4% of respondents had the price premium payment intention for fruit and vegetables grown in smart farms. Fourth, as a result of analyzing variables affecting the premium intention, the higher the health value among five values was recognized and the more important the smart farm cultivation information was, the higher the premium payment intention was.

• 한국유기농업학회지
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• 제19권spc호
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• pp.141-143
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• 2011

• 한국환경과학회지
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• 제10권5호
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• pp.365-371
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• 2001

The optimum dosage of quicklime in producing organic fertilizer using livestock wastes vith a greater than 80% water content was analysed. After one day had elapsed to allow for the organic fentilizer to dry, the quicklime dosage and the composition of the organic fertilizer were analysed. Any from done to the organic fertilizer was also assessed. The amount of the quicklime required to stabilize livestock wastes was determined by water content of livestock wastes. For J farm(slurry style) of which livestock wastes have 94.6% of water concentration, less than 3% of total amount of livestock wastes, for H farm (scraper style) of which livestock wastes have 85% of water concentration, less then 4% of total livestock wastes and Y farm(traditional style) of which livestock wastes have 80% of water concentration, less then 5% of total livestock wastes. Generally, in order to pack the organic fertilizer, water containing quicklime0stabilized livestock wastes should be less than 35%. It takes 9 days to keep this water content for the wastes from H and Y farms(less than 85% in water content), and 12 days for the wastes from J (94.6% in water content). According to the classification standard for compost constitution by Higgins, the crude fertilizers from all 3 farms had high grade $K_2O$ and CaO, the middle grade T-N and middle or low grade $P_2O_5$. Stabilization by quicklime is known to inhibit bacterial decomposition of organic matter and the activity of pathogenic organisms. In this study, more then 99.99% of coliform group, fecal group and viable cell count were reduced. Our results indicate that livestock wastes of greater 80% water content could be used to produce organic fertilizer without the addition of a material for moisture control.

• 한국유기농업학회지
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• 제17권1호
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• pp.19-33
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• 2009

This paper evaluates the technical efficiency of organic farm management practices and studies its main determinants in Hongdongmyeon of Hongsung county, Chungnam province. The analysis is performed in two stages. First, the efficiency is measured via the nonparametric "Data Envelopment Analysis" (DEA) technique. The DEA models are constructed not only to assess the overall technical efficiency of organic fanning practices but also to evaluate the management efficiencies. In a second stage critical determinants of efficiency are determined using a Tobit model. In this analysis the focus is on technical and socio-economic variables. The analytical results show that technically efficient farms is about 13 percent and the mean technical efficiency is found to be 0.73 indicating that many farms are not operating at an efficient scale.

• 한국임상수의학회지
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• 제40권6호
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• pp.393-398
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• 2023

We identified mastitis-causing pathogens using matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) in an organic dairy farm and evaluated the effects of antimicrobial restriction on antimicrobial susceptibility. A total of 43 Holstein cows without any clinical sign of mastitis were used in this study, and 172 quarter milk samples were cultured on blood agar plates for 24 hours at 37℃. Subsequently, bacterial species were identified and antimicrobial susceptibility tests were performed. The subclinical mastitis infection rates in the cows and quarters were 58.1% (25/43) and 25.6% (44/172), respectively. In the species identification, Staphylococcus aureus (40.9%) was the most prominent isolate, followed by S. chromogenes (22.7%), S. epidermis (18.2%), S. simulans (11.4%), S. haemolyticus (2.3%), S. muscae (2.3%), and S. xylosus (2.3%). In the antimicrobial susceptibility test, all isolates were 100% susceptible to 24 of 28 antibiotics, except for benzylpenicillin, cefalotin, cefpodoxime, and trimethoprim/sulfamethoxazole. The resistance rates of S. aureus, S. chromogenes, and S. muscae isolates to trimethoprim/sulfamethoxazole were 27.8%, 10%, and 100%, respectively, and the resistance rates of S. epidermis and S. xylosus to benzylpenicillin were 50% and 100%, respectively. S. chromogenes, S. epidermis, S. simulans, S. haemolyticus, and S. xylosus were resistant to cefalotin and cefpodoxime. In conclusion, restrictions on antimicrobial use for organic dairy farm certification have resulted in a high Staphylococcus spp. infection rate. Therefore, our study indicates the importance of mastitis management strategies implemented by farmers together with veterinary practitioners, even if mastitis does not appear clinically in organic dairy farms.

• 한국경제지리학회지
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• 제14권3호
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• pp.377-393
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• 2011

본 연구의 목적은 우리나라 농업공간에 나타나는 변화의 공간적 특징을 파악하는 것이다. 특히 세계화에 따라 가속되는 농산물 시장개방과 함께 안전한 먹거리와 지속가능성에 대한 수요 증가에 따라 부상하고 있는 친환경농업의 공간적 확산 양상과 그 지리적 특징을 분석한다. 이를 위하여 우리나라 농가와 친환경 농가의 공간적 분포 양상에 나타나는 변화를 분석하고, 특히 친환경농가의 공간적 특성을 파악하기 위하여 입지계수(LQ: Location Quotient)와 LISA(Local Indicator of Spatial Association) 분석을 적용하였다. 분석결과 2000년의 경우 우리나라의 친환경농업의 주요 집적지가 수도권과 충청권을 중심으로 분포하여 매우 불균등하게 나타났으나 2005년에는 전라권과 경상권 지역으로 확산되면서 특정지역의 공간집중이 비교적 완화되었다. 다중회귀분석을 이용하여 친환경농가 분포에 작용하는 지리적 변수들과의 관계를 분석한 결과 우리나라의 2005년 현재 친환경농업 분포는 농가 경영자의 연령, 농업관련 사업 경영농가, 농가의 정보화, 농가 경영자 교육수준 등에 영향을 받는 것으로 나타난다.