• Title/Summary/Keyword: Agricultural product

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Research on Farming Practice Change of Low-pesticide Farmers (저농약인증 농가의 유기.무농약 전환의향 분석)

  • Jeong, Hak-Kyun;Moon, Dong-Hyun
    • Korean Journal of Organic Agriculture
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    • v.21 no.2
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    • pp.139-155
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    • 2013
  • The purpose of this study is to analyze the effects of abolishing the low-pesticide agricultural product certification on environmentally friendly farming. A survey was conducted to quantitatively analyze farming practices and factors that change farming practice. It was found that only 17.0% of low-pesticide fruit farmers said that they will change their farming practice into organic or pesticide-free farming. With regard to the factors of farming practice change, binomial logistic regression model was applied for the analysis. In the analysis, it was found that farmers who grow the low-pesticide agricultural product are more likely to change their farming practice into organic or pesticide-free farming, as their expected price of organic or pesticide-free products is high, their area size is small, price premium of low-pesticide agricultural product is low, the frequency of their training is high. It is necessary to enhance the direct payment system to enlarge organic and nonpesticide acreage, and pest management techniques for fruits should be developed for low-pesticide fruit farmers to change their practice into organic and nonpesticide practice. Dissemination of cultivation manual, introduction of insurance to farmers, improvement of certificate system, and advertising and marketing of environment-friendly agricultural products are useful to develop environment-friendly agriculture.

An Improved Compost Using Cotton Waste and Fermented Sawdust Substrate for Cultivation of Oyster Mushroom

  • Oh, Se-Jong;Park, Jeong-Sik;Shin, Pyung-Gyun;Yoo, Young-Bok;Jhune, Chang-Sung
    • Mycobiology
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    • v.32 no.3
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    • pp.115-118
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    • 2004
  • A composting technique was assessed to enhance efficiency in oyster mushroom substrate. Poplar sawdusts and by-product of winter mushroom added by 10% of rice bran were composted outdoors at $20^{\circ}C$ to $28^{\circ}C$ for 12 days. The duration of fermentation was shortened 3 days in fermented sawdust plot. The yield obtained from waste cotton substrate with fermented poplar sawdust was 742 g, whereas the yield from control 663 g. In addition, the substrate with by-product of winter mushroom was the most effective to composting. It was useful to apply the fermented sawdust and by-product to waste cotton for compost and sporophore production of oyster mushroom.

Cultural characteristics of new oyster mushroom variety "Cheongsan" (느타리 신품종 "청산"의 재배 특성)

  • Lee, Kwang-Jae;Park, Young-Hak;Cho, Byung-Ju;Lee, Byung-Ryong;Joo, Jin-Ho;Park, Dong-Sik;Kim, Kyoung-Hee
    • Journal of Mushroom
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    • v.5 no.1
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    • pp.21-24
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    • 2007
  • A new variety of oyster mushroom 'Choengsan' was developed with crossing between monokaryotic strains derived from Suhan and Wonhyoung #3. It was developed by Agriproduct Processing Experiment Station, Gangwon Agricultural Research & Extension Services in 2006. The optimum temperature of mycelial growth was around $27{\sim}28^{\circ}C$ and that of fruiting body was $14{\sim}17^{\circ}C$. The color of pileus was dark-gray color. The period of primordial occurrence was about 20 days in bed cultivation using cotton waste and the yields were $38kg/3.3m^2$.

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A Scheme of the Agriculture Export Logistics Improvement in E-Trade Era (전자무역시대 농산물 수출물류 활성화 방안 및 과제)

  • Park, Hyun-Hee
    • International Commerce and Information Review
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    • v.11 no.2
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    • pp.49-66
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    • 2009
  • The DDA negotiations, in 9th multilateral trade round, has focused on nine sectors including agriculture, non-agricultural market access, and service. After August 2004, member countries have intensified negotiations in order to reduce gaps between countries perspective. So most attention of members countries has been focused on agricultural trade and non-agricultural market access. Agricultural negotiation confront tough challenges because of different positions among members countries, and are not expected to reach perfect forms of modalities. Nevertheless based on the fact that many countries nearly reached agreement on some core. Under this circumstance, Korea has to prepare more practical strategics and more effective individual commitments to minimized the agricultural market opening. The other way, some Korean agricultural products will be exported by the DDA negotiation. Recently the understanding of Third-Party Logistics and Logistics Outsourcing are receiving increased attention as means of becoming competitive in agricultural products export improvement. So this paper presents a in-depth analysis for third-party logistics and its implications for Korea agricultural product export system improvement in E-trade Era.

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Development of Reinforced Bio-filament Composites Composed of Agricultural By-product for 3D Printing Technologies

  • Cheong, Kyu Min;Kim, Hye Been;Seo, Yu Ri;Lim, Ki Taek
    • Proceedings of the Korean Society for Agricultural Machinery Conference
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    • 2017.04a
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    • pp.108-108
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    • 2017
  • In this study, biocomposite filaments with agricultural by-products can be used in extrusion-based 3D (Three-dimensional) printing. Extrusion-based 3D printing stands as a promising technique owing to its versatility. We hypothesized that bio-filament composite consisted of something derived from agricultural by-products could be used as 3D printing materials that could overcome the drawbacks of PCL (poly-caprolactone). Bio-filament mixed with PCL and agricultural by-products was defined as r-PCL in this study. In order to find it out the optimal mixing ratio of filaments, we had investigated PCL, r-PCL 10%, r-PCL 20%, r-PCL 50% separately. The morphological and chemical characteristics of the filaments were analyzed by FE-SEM (Field emission scanning electron microscope) and EDX (Energy-dispersive X-Ray spectroscopy), and the mechanical properties were evaluated by stress-strain curve, water contact angle, and cytotoxicity analysis. Results of this study have been shown as a promising way to produce eco-friendly bio-filaments composite for FDM (Fused deposition modeling) method based 3D printing technology. Thus, we could establish biomimetic scaffolds based on bio-printer filaments mixed with agricultural by-product.

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Willingness-to-Pay on Increase of Usage for Environmental-friendly Agricultural Product in School Food Service (학교급식에서의 친환경농산물 사용 확대를 위한 지불의사분석)

  • Yang, Sung-Bum
    • Korean Journal of Organic Agriculture
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    • v.26 no.4
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    • pp.609-618
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    • 2018
  • The objective of this study is to analyze the factors increased use of environmentalfriendly agricultural product in school food service. For this, I surveyed the perceptions on environmental-friendly agricultural product and willingness-to-pay for increasing use to 500 parents of elementary, middle and high school. As a result, the perception of environment and safety is the highest, but health and consumption is the lowest. The average of willingness-to-pay is about 12,136 Won per month. But 14.2 percent of the total respondents said that they did not have a willingness-to-pay, and 62.6 percent said that they would pay an additional 10,000 won or less. The factors affecting the willingness-to-pay were gender, income, health and consumption factors. Despite the low level of parents' perception of the health and consumption factors for environmental-friendly agricultural products, health and consumption factors affect statistically significant on the willingness-to-pay compared to others. Most of the promotion and education of environmental-friendly agricultural products has focused on safety, but this study suggests that education on the health and correct consumption of environmental-friendly agricultural products is important.

Microbial Floral Dynamics of Chinese Traditional Soybean Paste (Doujiang) and Commercial Soybean Paste

  • Gao, Xiuzhi;Liu, Hui;Yi, Xinxin;Liu, Yiqian;Wang, Xiaodong;Xu, Wensheng;Tong, Qigen;Cui, Zongjun
    • Journal of Microbiology and Biotechnology
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    • v.23 no.12
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    • pp.1717-1725
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    • 2013
  • Traditional soybean paste from Shandong Liangshan and Tianyuan Jiangyuan commercial soybean paste were chosen for analysis and comparison of their bacterial and fungal dynamics using denaturing gel gradient electrophoresis and 16S rRNA gene clone libraries. The bacterial diversity results showed that more than 20 types of bacteria were present in traditional Shandong soybean paste during its fermentation process, whereas only six types of bacteria were present in the commercial soybean paste. The predominant bacteria in the Shandong soybean paste were most closely related to Leuconostoc spp., an uncultured bacterium, Lactococcus lactis, Bacillus licheniformis, Bacillus spp., and Citrobacter freundii. The predominant bacteria in the Tianyuan Jiangyuan soybean paste were most closely related to an uncultured bacterium, Bacillus licheniformis, and an uncultured Leuconostoc spp. The fungal diversity results showed that 10 types of fungi were present in the Shandong soybean paste during the fermentation process, with the predominant fungi being most closely related to Geotrichum spp., an uncultured fungal clone, Aspergillus oryzae, and yeast species. The predominant fungus in the commercial soybean paste was Aspergillus oryzae.

Generation of Newly Discovered Resistance Gene mcr-1 Knockout in Escherichia coli Using the CRISPR/Cas9 System

  • Sun, Lichang;He, Tao;Zhang, Lili;Pang, Maoda;Zhang, Qiaoyan;Zhou, Yan;Bao, Hongduo;Wang, Ran
    • Journal of Microbiology and Biotechnology
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    • v.27 no.7
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    • pp.1276-1280
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    • 2017
  • The mcr-1 gene is a new "superbug" gene discoverd in China in 2016 that makes bacteria highly resistant to the last-resort class of antibiotics. The mcr-1 gene raised serious concern about its possible global dissemination and spread. Here, we report a potential anti-resistant strategy using the CRISPR/Cas9-mediated approach that can efficiently induce mcr-1 gene knockout in Escherichia coli. Our findings suggested that using the CRISPR/Cas9 system to knock out the resistance gene mcr-1 might be a potential anti-resistant strategy. Bovine myeloid antimicrobial peptide-27 could help deliver plasmid pCas::mcr targeting specific DNA sequences of the mcr-1 gene into microbial populations.

Characteristics of new commercial strain "Dasan" in Agrocybe chaxingu (차신고버섯 신품종 "다산"의 특성)

  • Lee, Kwang-Jae;Park, Young-Hak;Ham, Hun-Ju;Eum, Won-Sik;Joo, Jin-Ho;Kim, Kyung-Hee
    • Journal of Mushroom
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    • v.8 no.1
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    • pp.6-10
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    • 2010
  • A new commercial strain of Agrocybe chaxingu, "Dasan", was developed with crossing between monokaryotic strain derived from Jinhyang and GWM20502 strain. The optimum temperature, carbon source and nitrogen source for mycelial growth were $25{\sim}30^{\circ}C$, glucose and ammonium chloride, respectively. The period of primordia formation and fruiting body growth were about 12~13days and 6~8days in bottle cultivation using Georgia pine sawdust which supplemented with 30% wheat bran. The yields was 118.2g/850mL bottle, and the color of pileus was brown.

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A Study on Management Efficiency for the Environmentally-Friendly Agricultural Product of Oilseed Crop - Focused on Sesame and Perilla - (친환경인증 유지작물의 인증유형별 경영효율성 분석 - 참깨·들깨를 중심으로 -)

  • Kim, Min-Ju;Park, Joo-Sub
    • Korean Journal of Organic Agriculture
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    • v.23 no.2
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    • pp.207-231
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    • 2015
  • This study evaluate examines the efficiency and the improvement measurement of Oilseed crops (Sesame and Perilla). For this purpose, In the first stage, this study analyzes the current conditions of oilseed industry. In the second stage, this study evaluates the efficiency and super-efficiency of environmentally-friendly agricultural product producers. The result of this study show that: (1) Changes in annual wholesale price of Sesame and Perilla; (2) An efficiency and ranking of environmentally-friendly product producers; (3) The solutions and improvement measurements for inefficient producers.