3,312 research outputs found

    GROWING MEDIA FOR ORGANIC TOMATO PLANTLET PRODUCTION

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    The choice of growing media and the strategy of application of organic fertilizers is considered one of the largest challenges for production of organic tomato plantlets for transplanting. We have measured the growth and the ability of young tomato plantlets to extract plant nutrients from an organic growing media. Plants were grown in 0.45L pots. Plant nutrition were either entirely based on the mineral nutrients, available from the organic growing media or based on a combination of nutrients from the organic growing media and fertigation with water-soluble organic fertilizers during plantlet production. The first results shows that plant dry weigth and uptake of nitrogen, phosphorus and potassium was reduced in the organic growing media compared to the control, peat based growing media, but the results also indicate a possibility for optimizing the suggested organic growing media in order to increase the nutrient acquisition and utilization efficiency of the plants. Improved organic growing media can supply most of the necessary plant nutrients needed for the plant, limit the need for supplementary fertilisation, and be an alternative to conventional production with inorganic fertilizers

    Polymer fiber waveguides for terahertz radiation

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    Entrepreneurship within Urban and Rural Areas. Individual Creativity and Social Network

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    The entrepreneurial dynamics of urban and rural areas are different, and this paper explores ’individual creativity’ and social network factors in both places. The probabilities of becoming an entrepreneur and of surviving are analyzed. The results are based on longitudinal data combined with a questionnaire, utilizing responses from 1,108 entrepreneurs and 420 non-entrepreneurs. Creativity is only found to be relevant for start-up in urban areas, but it does not influence survival in any of the two areas. The social network matters, in particular in rural areas. By combining the person and the environment, common entrepreneurship beliefs can be questioned and entrepreneurship theory benefited.Entrepreneurship; Urban; Rural

    Between understanding and appreciation. Current science communication in Denmark

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    In this paper I use the concepts “understanding of science” and “appreciation of science” to analyze selected case studies of current science communication in Denmark. The Danish science communication system has many similarities with science communication in other countries: the increasing political and scientific interest in science communication, the co-existence of many different kinds of science communication, and the multiple uses of the concepts of understanding vs. appreciation of science. I stress the international aspects of science communication, the national politico-scientific context as well as more local contexts as equally important conditions for understanding current Danish science communication
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