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| Registros recuperados: 14 | |
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| Stein-Bachinger, Karin; Reckling, Moritz; Bachinger, Johann; Hufnagel, Johannes; Wijnand, Koker; Granstedt, Artur. |
| Eutrophication caused by agriculture is an increasing ecological threat to the Baltic Sea. Modern, resource-efficient farming systems based on integrated plant and animal production, effective nutrient recycling and low external inputs can enhance multiple agro-ecosystem services, resulting in reduced pollution. Practical examples of such farming systems are not widespread. Therefore, the Baltic Ecological Recycling Agriculture and Society (BERAS) Implementation project aimed to foster this systemic shift. In this paper, agronomic strategies are described to improve nitrogen (N) efficiency for the conversion to ecological recycling agriculture (ERA). First, N farm gate balances of 22 farms in conversion are presented. They showed a large variation... |
| Tipo: Journal paper |
Palavras-chave: Crop combinations and interactions; Air and water emissions. |
| Ano: 2015 |
URL: http://orgprints.org/29314/1/pdf |
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| Kjellenberg, Lars; Granstedt, Artur. |
| In 1958 started a comparative fertilization trial, called the K-trial, within the frames of Scandinavian Research Circle for Biodynamic Agriculture. The trial ended in 1990. This report accounts for the results that have been collected over this 33-year long trial-period. The ambition with the trial was to develop methods of analyses that could indicate foodstuff quality. The long-term trial-period also brought along, a possibility to study the correlation of fertilization, soil and crop. The difference between a cultivation that uses organic fertilizer compared to one that uses mineral fertilizer and where both achieves comparable yield-levels can according to the results from the K-trial be summarized as: Soil - higher enzyme-activity, soil... |
| Tipo: Report |
Palavras-chave: Crop health; Quality; Protection Soil biology Soil quality Composting and manuring. |
| Ano: 2005 |
URL: http://orgprints.org/10765/1/K%2Dtrial.pdf |
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| Schäfer, Winfried; Evers, Lars; Lehto, Marja; Sorvala, Sanna; Teye, Frederick; Granstedt, Artur. |
| During the last decade some so called ‘dry fermentation’ prototype plants were developed for anaerobic digestion of organic material containing 15-50 % total solids. These plants show added advantages com-pared to slurry digestion plants: Less reactor volume, less process energy, less transport capacity, less odour emissions. However on-farm dry fermentation plants are not common and rarely commercially available. This paper reports about an innovative two phase prototype biogas plant designed for continuous digestion of solid dairy cattle manure. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Farm nutrient management; Buildings and machinery; Composting and manuring. |
| Ano: 2005 |
URL: http://orgprints.org/6592/1/rapport2005.pdf |
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| Schäfer, Winfried; Evers, Lars; Lehto, Marja; Sorvala, Sanna; Teye, Frederick; Granstedt, Artur. |
| So called "dry fermentation" prototype plants for anaerobic digestion of organic material containing 15-50 % total solids show added advantages compared to slurry digestion plants (Hoffman 2001): Less reactor volume, less process energy, less transport capacity, less odour emissions. However on-farm dry fermentation plants are not common and rarely commercially available. Recent on-farm research (Kusch & Oechsner 2004) and prototype research (Linke 2004) show promising technical solutions for dry fermentation batch reactors on-farm. The Biodynamic Research Institute in Järna developed a two-phase on-farm biogas plant. The plant digests manure of dairy cattle and organic residues originating from the farm and the surrounding food processing units... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Farm nutrient management; Buildings and machinery; Composting and manuring. |
| Ano: 2005 |
URL: http://orgprints.org/6542/1/nj372.pdf |
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| Granstedt, Artur; Seuri, Pentti; Thomsson, Olof. |
| In this report the historical background and present situation of the plant nutrient balances and surplus of plant nutrients within the agricultural sector in the eight countries of the Baltic Sea catchments area (Sweden, Finland, Estonia, Latvia, Lithuania, Poland, Denmark, Germany and Russia) are presented and analysed. The Baltic Ecological Recycling Agriculture and Society (BERAS) project is evaluating the consequences of converting the whole agricultural sector according to recycling principles. This analysis is being based on data from selected ecological recycling farms within the Baltic drainage area and will be presented in a series of project reports of which this is the first for Work Package 2, Effects on environment, natural resources and... |
| Tipo: Report |
Palavras-chave: Recycling; Balancing and resource management. |
| Ano: 2004 |
URL: http://orgprints.org/4212/1/4212.pdf |
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| Schäfer, Winfried; Evers, Lars; Lehto, Marja; Sorvala, Sanna; Teye, Frederick; Granstedt, Artur. |
| The Biodynamic Research Institute in Järna developed at the farm Yttereneby a two phase biogas plant. The plant digests manure of dairy cattle and organic residues originating from the farm and the surrounding food processing units containing 17,7 - 19,6 % dry matter. A new technology for continuously filling and discharging the biogas reactor was developed and implemented. Digestion residues are separated into a solid fraction for composting and into a liquid fraction. The solid fraction is suitable for aerobic composting. Initial results show that anaerobic digestion and following aerobic composting of the solid fraction improves the nitrogen balance of the farm compared to mere aerobic composting. Composted biogas plant residues and effluent together... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general Dairy cattle Recycling; Balancing and resource management Composting and manuring. |
| Ano: 2005 |
URL: http://orgprints.org/3459/1/3459.pdf |
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| Kahiluoto, Helena; Granstedt, Artur; Bäckman, Stefan; Fischer, Holger; Hannula, Annamari; Kakriainen, Salla; Krumalova, Veronica; Larsson, Markus; Lehto, Tiina; Nousiainen, Marko; Pylkkänen, Päivi; Schneider, Thomas; Seppänen, Laura; Seuri, Pentti; Sumelius, John; Thomsson, Olof; Vesala, Kari; Vihma, Antto. |
| The aim of the study was to assess the impact of an increased share of local organic food based on local resources, especially on increased recycling (i.e. the impact of increased locality or localization), on sustainability of rural food systems around the Baltic Sea. Obstacles and solutions for sustainable localization and recycling were also identified. In addition to these main objectives, a methodological interest in developing interdisciplinary research processes was also incorporated. Case food systems in eight Baltic countries were studied on the basis of interviews and stakeholder workshops, as well as by analysis of environmental indicators and economic parameters at farm and food system level by a European multidisciplinary research group.... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Policy environments and social economy Recycling; Balancing and resource management. |
| Ano: 2005 |
URL: http://orgprints.org/5942/1/Kahiluoto.rtf |
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| Granstedt, Artur. |
| I dag går större delen av den växtnäring som tillförs jordbruket förlorat till luft och vatten eller binds i marken. Detta innebär en kostnad för jordbruket och leder samtidigt till skador på den omgivande miljön. Jordbruket bedöms svara för över 40 procent av kväveläckaget till Östersjön. Kväveförlusterna till luften i form av ammoniak bidrar också till övergödningen och det sura nedfallet. Målsättningen att halvera kväveförlusterna från jordbruket har inte uppnåtts. Trots att det är endast en liten del av fosforöverskottet i jordbruket som läcker ut i vattendragen har även detta skadliga konsekvenser för miljön i form av övergödning av sjöar, vattendrag och hav. I föreliggande studie beskrivs växtnäringsflödena i jordbruket och orsakerna till dagens... |
| Tipo: Report |
Palavras-chave: Nutrient turnover. |
| Ano: 1999 |
URL: http://orgprints.org/298/1/ekolantbr29.pdf |
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| Registros recuperados: 14 | |
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