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| Registros recuperados: 19 | |
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| Seuri, Pentti. |
| The farm model was built according to the data from 9 Finnish organic farms. 20% of area produced cash crop and 80% was used as fodder in milk production on the farm. The model indicates that there is high potential (up to 30% compared to Finnish average) to reduce nitrogen losses in agriculture. The key factors are integration between crop and animal production, limited nutrient intensity according to the system itself and BNF. The crop rotation used in model can support milk production with relative high intensity. In this model no external fodder is used, however, it may be necessary to have a small amount of high quality processed protein concentrate, if the annual milk yield exceeds 8000 kg/cow. Crop yield by means of nitrogen yield was about... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Recycling; Balancing and resource management Air and water emissions Farm nutrient management. |
| Ano: 2014 |
URL: http://orgprints.org/24062/1/24062.pdf |
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| Seuri, Pentti; Kahiluoto, Helena. |
| Primary production balance (PPB) indicates the ratio (*) between harvested nutrients and nutrients put into crop production from outside the system (=primary nutrients). The PPB is independent of the final output (crop vs. animal products) and can be used to evaluate different systems (farms). The utilization of nitrogen (N) was evaluated by means of the PPB on nine organic farms, stockless and mixed ones, in eastern Finland. The mixed farms were able to reach a remarkably higher primary production balance (1.0 – 1.2) compared with the stockless ones (0.5). Values higher than 1.0 indicate recirculation of nutrients. Other components of the high PPB were legumes as nitrogen source and optimum livestock density. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds. |
| Ano: 2005 |
URL: http://orgprints.org/4475/4/Seuri_Kahiluoto_4p_revised%2Ded.doc |
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| Seuri, Pentti; Kahiluoto, Helena. |
| Primary production balance (PPB) indicates the ratio (*) between harvested nutrients and nutrients put into crop production from outside the system (=primary nutrients). The PPB is independent of the final output (crop vs. animal products) and can be used to evaluate different systems (farms). The utilization of nitrogen(N) was evaluated by means of the PPB on nine organic farms, stockless and mixed ones, in eastern Finland. The mixed farms were able to reach a remarkably higher primary production balance (1.0 – 1.2) compared with the stockless ones (0.5). Values higher than 1.0 indicate recirculation of nutrients. Other components of the high PPB were legumes as nitrogen source and optimum livestock density. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Air and water emissions. |
| Ano: 2005 |
URL: http://orgprints.org/5940/1/Seuri.rtf |
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| Seuri, Pentti. |
| The main purpose of agriculture is food production. There are always limited resources available for food production, thus the resource efficiency is always the key issue. The modern agriculture is using resources like external nutrients (fertilizers) and non renewable energy in large scale. The high production intensity results in high production per hectare, on the other hand it results also in serious environmental harms.Organic farming is based on more internal and renewable resources than conventional farming.Very often it results also in lower production intensity and lower production per hectare. There is a common criticism against organic agriculture as inefficient use of land and also inefficient use of nutrients and energy per output unit. Closer... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop combinations and interactions; Farm nutrient management. |
| Ano: 2013 |
URL: http://orgprints.org/24522/1/24522.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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| 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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| Seuri, Pentti; Kuisma, Miia. |
| Water discharge and nutrient leaching studies were conducted in an experimental field under organic farming practice for 20 years. The water discharge measurements cover five years out of a six-year crop rotation. The water discharge for the whole year was 1520 m³/ha (=152 mm). More than 2/3 of the total discharge occurred in April-May. The total precipitation for the whole year was 680 mm. The total amount of N in the drainage runoff was 11.5 kg/ha and the flow-weighted average content 7.5 mg/l. The total amount of P in the drainage runoff was 48 g/ha and the flow-weighted average content 0.031 mg/l. 85 % of the total P was dissolved reactive phosphorus (DPR). Some preliminary correlation between N leaching and N management was observed, i.e. higher... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Air and water emissions. |
| Ano: 2006 |
URL: http://orgprints.org/8968/1/ymparisto.pdf |
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| Registros recuperados: 19 | |
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