• Title/Summary/Keyword: sustainable agents

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Initiative of the Asian Network for Sustainable Organic Farming Technology

  • Lee, Y.;Choi, H.S.;Lee, S.M.;Lee, H.J.
    • Korean Journal of Organic Agriculture
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    • v.19 no.spc
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    • pp.111-114
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    • 2011
  • Construction of the Asian Network for Sustainable Organic Farming Technology (ANSOFT) will be cooperatively administered by the public researchers in 12 Asian member countries from 2010 to 2012. ANSOFT will bring forward multiple reports, which will be constantly renewed by the member countries, regarding environmental issues, plant and landscape protection techniques, regulations and policies of each country's government on an organic agriculture, and natural resources such as organic seeds and biological agents.

A Field Study on the Operational Realities of the Rural and Mountain Experience Village -With Focus on Boeun-gun, Chungbuk- (농산촌 체험마을의 운영실태에 관한 조사연구 -충북 보은군을 중심으로-)

  • Park, Heon-Choon
    • Journal of the Korean Institute of Rural Architecture
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    • v.12 no.4
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    • pp.37-44
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    • 2010
  • The purpose of this research is to present basic data for the residents, experts, and administrators to establish sustainable and future-oriented experience villages by investigating the operational realities of rural and mountain experience villages that have currently been promoted as the government-supported projects. First, in order to establish a sustainable experience village, each of the residents, experts and administrators who are the principal agents for cultivating the village should perform their role appropriately and build an organic cooperative system. The residents should have a sense of ownership and form a sense of solidarity by organizing communal consultation system. The experts should be able to present feasible project plans. The administrators need to have posture of understanding from the viewpoint of residents. In order to establish sustainable experience villages, ecological, cultural, and social values should be conveyed preferentially, and through this, the living spaces like farm villages should be formed.

Calcineurin-Responsive Transcription Factor CgCrzA Is Required for Cell Wall Integrity and Infection-Related Morphogenesis in Colletotrichum gloeosporioides

  • Wang, Ping;Li, Bing;Pan, Yu-Ting;Zhang, Yun-Zhao;Li, De-Wei;Huang, Lin
    • The Plant Pathology Journal
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    • v.36 no.5
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    • pp.385-397
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    • 2020
  • The ascomycete fungus Colletotrichum gloeosporioides infects a wide range of plant hosts and causes enormous economic losses in the world. The transcription factors (TFs) play an important role in development and pathogenicity of many organisms. In this study, we found that the C2H2 TF CgCrzA is localized in both cytoplasm and nucleus under standard condition, and it translocated from cytoplasm to nucleus in a calcineurin-dependent manner. Moreover, the ΔCgCrzA was hypersensitive to cell wall perturbing agents and showed severe cell wall integrity defects. Deletion of the CgCRZA inhibited the development of invasive structures and lost pathogenicity to plant hosts. Our results suggested that calcineurin-responsive TF CgCrzA was not only involved in regulating cell wall integrity, but also in morphogenesis and virulence in C. gloeosporioides.

A Tool for Mapping and Measuring Sustainable Capacity Development: Concepts, Methods and Contexts (균형적 능력개발의 매핑 및 측정을 위한 도구 - 개념, 방법론 및 배경 -)

  • Liou, Jae-Ik
    • Journal of the Korean Association of Geographic Information Studies
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    • v.9 no.4
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    • pp.165-175
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    • 2006
  • The discussion about capacity development (CD) has been spotlighted as significant drivers for sustainable development in recent years. Multi-dimensional natures of capacities would lead to various definitions of CD in international institutes and organizations. CD is perceived as an endogeneous process to improve actionable learning and knowledge, but most of core capacities still remain abstract notion and might be unreliable in sustainable development (SD). The paper first explicates international perspectives of CD in association with SD. An agent-based model is especially proposed to portray more details of CD. It illuminates the role of assets (or capitals, resources) in agents to impact on ingredients of CDs that are drivers or enablers for improvement of SD. A definition of sustainable capacity development is firstly articulated in international society and its conceptual framework is also creatively designed to assist concerned international organizations. The paper concludes by proposing practical spatial asset mapping linking to agent-based organizational capacity as a tool for measuring sustainable capacity development.

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Occupational Cancers with Chemical Exposure and their Prevention in Korea: A Literature Review

  • Rim, Kyung-Taek
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.6
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    • pp.3379-3391
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    • 2013
  • The usage and types of chemicals being developed, with diversified new exposure of workers, are of natural concern to occupational disease. In Korea, with industrialization, application of many chemicals has increased. A large proportion of mortality and disease is due to cancer, and the causal hazardous agents include chemical agents, like heavy metals and so on. Due to the long latency period with malignancies and the fact they are usually found after workers' retirement, it is suggested that management policies must be established to prevent occupational cancers occurring among workers in Korea. To give a general description about the efforts to prevent the occupational cancer with exposure to chemicals, articles on the trends of occupational cancers were reviewed and summarized with related research and efforts for prevention in Korea. It is important to improve the understanding of occupational cancer and help to maintain sustainable and appropriate measures to guarantee workers safety and health.

Seed Coating for the Application of Biocontrol Agent Bacillus subtilis YBL-7 against Phytopathogens (길항세균 Bacillus subtilis YBL-7 건조포자체의 종자피막화에 의한 생물학적 방제)

  • 장종원;김상달
    • Microbiology and Biotechnology Letters
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    • v.23 no.2
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    • pp.243-248
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    • 1995
  • Agrochemicals for the plant-disease control are criticized severely for causing environmental pollution and residual problems, and consequently microbial disease control agents are expected to be safer and more economical for sustainable agriculture. Treatment of biological control agents to seed requires the use of effective delivery systems that allow full expression of the benefical qualities of the bioprotectant. For the activation and establishment of bioprotectant around the plant seed which are able protect the seeds and seedlings from pathogen attack, the optimal liquid coating formulation was obtained using 2% sodium carboxymethyl cellulose (binder), 20% sesame dregs (solid particulate material), and dried spore of Bacillus subtilis YBL-7 (bioprotectants, 10 mg/g of seed). Suppressive of root rot was demonstrated in pot trials with coated kidney bean (Phaseolus vulgaris L.) seeds. Coated seeds with B. subtilis YBL-7 spore in F. solani-infested soil reduced disease incidence by 85% to 90% after 30 days.

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Correlation between Disease Occurrences and Microbial Community Structure by Application of Organic Materials in Pepper (유기농자재 사용에 따른 고추 병해 발생과 토양 미생물상 구조의 상관관계)

  • Cho, Gyeongjun;Kim, Seong-Hyeon;Lee, Yong-Bok;Kwak, Youn-Sig
    • Research in Plant Disease
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    • v.26 no.4
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    • pp.202-209
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    • 2020
  • Organic farming is necessary to sustainable agriculture, preserve biodiversity and continued growth the sector in agriculture. In organic farming, reduced usage of chemical agents that adversely affect human health and environment, employing amino acids and oil cake fertilizer, plant extracts, and microbial agents are used to provide safe agricultural products to consumers. To investigation microbiome structure, we proceeded on the pepper plant with difference fertilizers and treatments in organic agriculture for three years. The microbial communities were analyzed by the next generation sequencing approach. Difference soil microbiota communities were discovered base on organic fertilizer agents. Occurrences of virus and anthracnose diseases had a low incidence in conventional farming, whereas bacteria wilt disease had a low incidence in microbial agents treated plots. Microbe agents, which applied in soil, were detected in the microbial community and the funding suggested the applied microbes successfully colonized in the organic farming environment.

Performance of self-curing concrete as affected by different curing regimes

  • El-Dieb, A.S.;El-Maaddawy, T.A.
    • Advances in concrete construction
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    • v.9 no.1
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    • pp.33-41
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    • 2020
  • In this study, polyethylene glycol (PEG) and polyacrylamide (PAM) have been used as self-curing agents to produce self-curing concrete (SC). Compressive strength, ultrasonic pulse velocity (UPV), bulk electrical resistivity, chloride ion penetrability, water permeability, and main microstructural characteristics were examined under different curing regimes, and compared to those of the control concrete mixture with no self-curing agents. One batch of a control mixture and one batch of a SC mixture were air-cured in the lab to act as non-water-cured samples. The water curing regimes for the control mixture included continuous water curing for 3, 7, and 28 days and periodical moist curing using wetted burlap for 3 and 7 days. Curing regimes for the SC mixtures included 3 days of water curing and periodical moist curing for 3 and 7 days. SC mixtures showed better microstructure development and durability performance than those of the air-cured control mixture. A short water curing period of 3 days significantly improved the performance of the SC mixtures similar to that of the control mixture that was water cured for 28 days. SC concrete represents a step towards sustainable construction due to its lower water demand needed for curing and hence can preserve the limited water resources in many parts of the world.

Biological Control of Phytopathogenic Fungi by Bacillus amyloliquefaciens 7079; Suppression Rates are Better Than Popular Chemical Fungicides

  • CHUNG SOOHEE;KIM SANG-DAL
    • Journal of Microbiology and Biotechnology
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    • v.15 no.5
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    • pp.1011-1021
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    • 2005
  • Rhizobacteria are actively sought for the substitution of chemical fertilizers and pathogen control agents in environment-friendly sustainable agriculture. To be successfully commercialized in the current Korean market as agriculture biomaterials, microbial agents should exhibit both properties of plant growth promotion and pathogen control. That is, the organism must be a phytostimulator as well as a biocontrol agent. These criteria and the survival rate of a rhizobacterium, Bacillus amyloliquefaciens 7079, in the soil system were investigated to evaluate the suitability for future commercialization. B. amyloliquefaciens 7079-treated seedlings showed $22.8\%$ maximum increase in leaf-length growth, compared with water-treated controls, showing the phytostimulating property. The disease suppression rates of Phytophthora-blight of peppers and Fusarium-wilt of tomatoes by B. amyloliquefaciens 7079 were 1.5 and 2.2 times better, respectively, than by three popular chemical fungicides used in actual agricultural practices to control the respective pathogens. Survival of B. amyloliquefaciens 7079 on the rhizoplane and in the rhizosphere was favorable up to 50 days in the soil system employed. These positive properties show that B. amyloliquefaciens 7079 is likely to be a suitable candidate for commercialization to market as agricultural biomaterials.

Current Status and Perspectives of Livestock Environment Improving Agents for the Characteristics and Control of Swine Manure Odor (양돈 분뇨의 악취특성 및 문제 해결을 위한 환경개선제 사용 현황 및 전망)

  • Lee, Eun-Young;Lim, Jung-Soo
    • Microbiology and Biotechnology Letters
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    • v.38 no.3
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    • pp.244-254
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    • 2010
  • The trend toward intensification of livestock raising, confinement in barn has increased in recent days. The move toward concentrated animal feeding operations reduces per unit costs and permits farmers to better earnings in spite of fluctuation in hog prices. However, this also results in outbreaks of a lot of animal wastes and odorous compounds. Emissions of these malodorous compounds produced from concentrated animal feeding operations have become a concern for both public and regulatory agencies and are causing the complaints of residents in rural area. For competitive sustainable swine production industry, odor management plans systematically identify potential odor sources, determine control strategies to reduce these odors, and establish criteria for implementing these strategies. Since, the malodor originates from microbial activities involving a variety of microbes, understanding the characteristics of the microflora present in swine manure is essential for developing effective odor control techniques. This paper reviews the available information in the literature related to the types of bacteria in swine manure, the potential odorous compounds associated with different bacterial genera, and the corresponding techniques used to control odor based on microbiological principles.