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| Registros recuperados: 683 | |
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| Ortolani, Livia; Kristensen, Hanne L.; Campanelli, Gabriele; Bavec, Martina; Bavec, Franc; von Fragstein, Peter; Bergmam, Astrid; Leteo, Fabrizio; Canali, Stefano. |
| This paper presents the findings of an assessment aimed to evaluate, in terms of cost and energy consumption, the introduction of living mulches in different organic vegetable systems producing cauliflower. The study was carried out in three European countries (IT, SLO and DK) in the frame of the InterVeg project (Core Organic II). The achievements demonstrated that, in economic terms, farmers’ choice of a specific technique, like living mulch instead of sole cropping, can be influenced by two key elements: human labor and fossil fuel consumption. Different organic systems have a different proportion in using the two inputs depending on the specific farm strategy. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Farm economics; Technology assessment; Air and water emissions; Policy environments and social economy; Weed management; Denmark; Italy; Europe. |
| Ano: 2014 |
URL: http://orgprints.org/23713/1/23713%20Ortolani%20et%20al.%20_ISOFAR%202014_MM.pdf |
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| The expectations of the growth in organic production are based on the consumers' assumptions of less environmental loading of this management practice. The requirements of more environmental support to be paid for organic farming are based on the same assumptions. Both the consumers and decision makers need more scientific data for their decisions on the environmental impacts through the life cycle of these management practices. The aim of this investigation is to collect all research results on the nutrient loading of organic and conventional farming, to produce model farms for estimating the loading through the life cycle of these management practices. |
| Tipo: Project description |
Palavras-chave: Air and water emissions. |
| Ano: 2023 |
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| Svendsen, Gert Tinggaard. |
| How should we evaluate and regulate the impacts of lobbying in the European Union (EU)? The current lack of transparency around lobbying activities and the absence of formal regulation mean that a hidden lobbying problem may prevail. The tentative case study of green industries in the EU is illustrative. The wind turbine industry, for example, benefits from ambitious environmental target levels for greenhouse gas reductions that will increase the future market for renewable energy. In contrast, for example, no environmental target levels exist that increase the future market shares of organic farming. Rational choice theory suggests that lobbying and group size advantages can explain the observed difference in achieving environmental target levels. The EU... |
| Tipo: Journal paper |
Palavras-chave: Air and water emissions. |
| Ano: 2011 |
URL: http://orgprints.org/18778/1/18778.pdf |
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| Hansen, Martin N.; Sommer, Sven G.; Henriksen, Kaj. |
| Livestock manure contributes significantly to the global emission of methane (CH4). Methane is emitted during storage of both liquid and solid manure. Part of the solid manure is produced in loose housing systems with solid floors where the manure is stored in a deep litter mat, which is a mixture of straw, urine and faeces. As anaerobic conditions are found in the lower part of the deep litter mat, significant amounts of the carbon stored in the deep litter may be emitted as CH4. It has been estimated that a cattle deep litter mat contributed 11 to 18% of the total CH4 (from cattle digestion and litter) emitted. This source of CH4 does not seem to be included in the IPCC default value for solid manure. During outdoor storage of solid manure, CH4 can be... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Air and water emissions. |
| Ano: 2002 |
URL: http://orgprints.org/3480/1/3480.pdf |
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| Uusi-Kämppä, Jaana. |
| The raising of cattle outdoors in winter is becoming more common in temperate areas, although there is little information available on the effects of this practice on forested environments. In this study, the concentrations of ammonium acetate extractable phosphorus (P AAAc )and mineral nitrogen (NH 4-N and NO 3-N) in soil and the quality of percolation water from an open feedlot were studied in eastern Finland in 1997–2000. In each of four pens (975–1300 m2) eight suckler cows were fed in winter from 1995 in the case of the first two pens and from 1996 in the remaining two. The suckler cows usually stayed in the front part of the feedlot. Therefore the nutrient loading was also the highest in this part of the lot. When the pens had been used for 1–2... |
| Tipo: Journal paper |
Palavras-chave: Air and water emissions. |
| Ano: 2002 |
URL: http://orgprints.org/16735/1/uusik%C3%A4mpp%C3%A4.pdf |
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| Thyme, Mette; Ambus, Per. |
| In organic dairy farming, a major N input to the plant-soil system comes from biological N2 fixation by pasture legumes, but knowledge is sparse on how much of the fixed N2 is lost from the pastures as N2O. Nitrifying and denitrifying bacteria are the main contributors to the N2O production in soils. Currently, no contribution from biological N2 fixation in legume pastures is included in the national N2O inventories, partly because of uncertainties in quantifying the N2 fixation in the pastures (Mosier et al., 1998). According to the guidelines issued by The Intergovernmental Panel on Climate Change (IPCC), inventories for N2O emissions from agricultural soils should be based on the assumption that 1.25 % of added N is emitted as N2O (IPCC, 1997). The... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Nutrient turnover; Pasture and forage crops; Air and water emissions. |
| Ano: 2004 |
URL: http://orgprints.org/4147/1/4147.pdf |
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| Chatskikh, Dmitri; Olesen, Jørgen E.; Berntsen, Jørgen. |
| A dynamic algorithm to simulate the N2O production and emission from nitrification and denitrification has been included in the field component of the FASSET whole-farm model. Firstly, the model was tested on experimental data of N2O emissions from typical North European grasslands with mineral soils (Denmark, Finland, UK), differing in climatic conditions, soil properties and management. A good agreement was obtained between simulated and measured seasonal N2O emissions grazed and mown grasslands. The predicted annual N2O emissions were generally in accordance with the emission factor of 1.25% suggested by IPCC. Secondly, the model was tested under different climatic and management scenarios applicable for Denmark. The reasonable calculations of potent... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Air and water emissions. |
| Ano: 2004 |
URL: http://orgprints.org/4131/1/4131.doc |
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| Johansen, Anders; Carter, Mette S.; Jensen, Erik Steen; Hauggaard-Nielsen, Henrik; Ambus, Per. |
| Soil from the Højbakkegård experimental (BioConcens) field was amended with nothing (control), each of two anaerobic digested (AD) materials (mixture of AD cattle manure and maize, mixture of AD cattle manure and cut off grass-clover material), raw cattle manure, and grass-clover in five individual treat-ments. The materials were incorporated homogeneously into the soil and sampled destructively at 0, 1, 3 and 9 days after incorporation. Besides, experiments were performed to follow the turnover of these materials, measured as accumulated respiration over a longer period. Measures included available organic soil carbon (cold- and hot-water extractable), soil mineral nitrogen concentration, soil pH, accumulated respiration over a two-week period, emission... |
| Tipo: Journal paper |
Palavras-chave: Soil quality; Nutrient turnover; Air and water emissions; Biodiversity and ecosystem services; Farm nutrient management. |
| Ano: 2011 |
URL: http://orgprints.org/18894/7/18894.pdf |
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| Carter, Mette S.. |
| Agricultural soils are known to be a considerable source of the strong greenhouse gas nitrous oxide (N2O), and in soil N2O is mainly produced by nitrifying and denitrifying bacteria. In Denmark, grass-clover pastures are an important component of the cropping system in organic as well as conventional dairy farming, and on a European scale grass-clover mixtures represent a large part of the grazed grasslands. Biological dinitrogen (N2) fixation in clover provides a major N input to these systems, but knowledge is sparse regarding the amount of fixed N2 lost from the grasslands as N2O. Furthermore, urine patches deposited by grazing cattle are known to be hot-spots of N2O emission, but the mechanisms involved in the N2O production in urine-affected soil are... |
| Tipo: Thesis |
Palavras-chave: Pasture and forage crops; Air and water emissions. |
| Ano: 2005 |
URL: http://orgprints.org/10147/1/10147.pdf |
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| Allain, Sophie. |
| Today, organic farming is also a provider of public goods, promoted by an increasing number of actors. It may be seen as a “commons”, that has to be shaped and developed by new types of collective commitments to study. Two French experiences in that perspective aiming to protect water resources and led by local authorities have been analyzed. The study shows that the local authority behaves as a facilitator of territorial development plan. It acts through two complementary levers, the control of supply (land and ownership) and demand (institutional catering). Whereas environmental efficiency remains to be proved, the projects rely on an increasing collective mobilization and develop according to their ability for budding and territorial rooting. New modes... |
| Tipo: Journal paper |
Palavras-chave: Farming Systems; Social aspects; Air and water emissions; Environmental aspects. |
| Ano: 2013 |
URL: http://orgprints.org/25285/1/Allain_2013_CIAG_Vol32.pdf |
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| Das hier beschriebene Projekt ist Teil eines Verbundvorhabens, das folgende Teilprojekte umfasst: FKZ 06OE353, FKZ 06OE160. Alle in Organic Eprints archivierten Projektbeschreibungen und Veröffentlichungen zu diesem Verbundvorhaben finden Sie unter folgendem Link: http://orgprints.org/cgi/saved_search?savedsearchid=1250. Für die gesamte Bio-Branche, die Verbraucher und die Agrar-Umweltpolitik ist es wichtig zu wissen, wie klimafreundlich Betriebe des Ökologischen Landbaus wirtschaften, welche flächen- und produktbezogenen Treibhausgasemissionen auftreten und wie noch bestehende Optimierungspotenziale genutzt werden können. Während für einzelne landwirtschaftliche Teilprozesse Modelle und Analysetools zur Verfügung stehen, fehlen bisher geeignete... |
| Tipo: Project description |
Palavras-chave: Nutrient turnover; "Organics" in general; Air and water emissions. |
| Ano: 2023 |
URL: http://orgprints.org/16945/1/vTI_06OE353.doc |
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| The present global food system is far from ideal and it is not sustainable, especially because of the lack of food security for large populations, the distribution and use patterns of food, and the externalities in terms of pollution and overuse and destruction of critical resources. But, there are many promising examples and initiatives of alternative development pathways which seek to combine improved food security and rural development with sustainable use of natural resources and enhancement of ecosystems services. This book takes a critical look at one group of such initiatives, the development and promotion of organic farming systems. In particular, it aims at investigating to what extent and under which conditions organic agriculture may contribute... |
| Tipo: Book |
Palavras-chave: Air and water emissions; Food systems; Landscape and recreation. |
| Ano: 2013 |
URL: http://orgprints.org/25616/7/25616.pdf |
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| Vinther, F.P.; Olesen, J.E.. |
| Models for simulating nitrogen leaching are often based on simulations of a number of individual processes in the soil, such as turnover of organic matter, nitrogen mineralisation and immobilisation, nitrification, denitrification etc. It has been found that the models used under Danish conditions (DAISY and/or FASSET) have some limitations especially concerning the turnover of organic matter with implications on e.g. soil respiration. Therefore, the models are being modified and for calibration of the model measurements of in situ soil respiration using a portable CO2-analyser, nitrogen mineralization using a field incubation technique and N2O emission using a static chamber method, were carried out during the growing season 2001. The measurements were... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil quality; Soil biology; Air and water emissions. |
| Ano: 2001 |
URL: http://orgprints.org/1816/1/Abstract_Finn_Vinther_Denmark.doc |
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| Helbig, Susann; Grass, Rüdiger; Hülsbergen, Kurt-Jürgen. |
| Biogas plants gain increasing circulation in organic agriculture. Among systems engi-neering effects on matter cycles, soil, plants and environment particularly depend on the integration of the biogas plant into the farming system. Ecological effects should already be taken into consideration in the planning stage. Therefore appropriate tools are required. In this contribution ecological effects of changing an organic cash crop farming system into a biogas system are shown by using an established modelling approach. Starting from an existing cash crop farm a biogas-scenario was developed which includes e. g. structural adaptations of the cultivation system and crop rotation, the use of internal products and manuring. The biogas plant was conceived as a... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Air and water emissions. |
| Ano: 2007 |
URL: http://orgprints.org/9608/1/9608_Helbig_Poster.pdf |
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| Daugbjerg, Carsten; Svendsen, Gert Tinggaard. |
| Government intervention in green infant industries may be justified as a strategy to increase the provision of public goods. How should government policies be designed to promote such industries? One way to analyse this question is to compare government intervention in green infant industries in which it has been successful with green infant industries in which it has been less successful. The Danish government has intervened intensively in the wind turbine industry and organic farming sector mainly for environmental reasons since 1992 and 1987 respectively, but with very different impacts. While the electricity market share of wind energy reached 20% in 2007, organic food consumption lags behind with a food market share of approximately 8.5% in 2007. This... |
| Tipo: Journal paper |
Palavras-chave: Air and water emissions; Policy environments and social economy. |
| Ano: 2011 |
URL: http://orgprints.org/20897/4/20897.pdf |
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| Registros recuperados: 683 | |
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