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| Registros recuperados: 34 | |
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| Halberg, Niels; Kristensen, Erik Steen; Refsgaard, Karen. |
| The problems of balancing agricultural production methods against environmental concern cannot be solved by focusing on single activities of livestock farming and experimental knowledge alone because of interactions between herds and crops and between the production system and the manager. An alternative method based on studies in private farms is proposed to evaluate the effects of the production intensity on pollution and resource efficiency. Energy use and crop yield in gram and grass-clover crops registered on conventional and organic mixed dairy farms were analyzed in order to facilitate modelization of energy efficiency in different production systems on different danish soil types. The energy efficiency was higher in organic crops on all soil types... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Environmental aspects; Farming Systems; Crop husbandry. |
| Ano: 1994 |
URL: http://orgprints.org/13115/1/13115.pdf |
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| Halberg, Niels; Kristensen, Erik Steen; Kristensen, Ib Sillebak. |
| Separate focus on crop fertilization or feeding practices inadequately describes nitrogen (N) loss from mixed dairy farms because of (1) interaction between animal and crop production and between the production system and the manager, and (2) uncertainties of herd N production and crop N utilization. Therefore a systems approach was used to study N turnover and N efficiency on 16 conventional and 14 organic private Danish farms with mixed animal (dairy) and crop production. There were significant differences in N surplus at the farm level (242 kg. N/ha. vs. 124 kg. N/ha. on conventional and organic dairy farms respectively) with a correlation between stocking rate and N surplus. N efficiency was calculated as the output of N in animal products divided by... |
| Tipo: Journal paper |
Palavras-chave: Farm nutrient management. |
| Ano: 1995 |
URL: http://orgprints.org/13010/1/13010.pdf |
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| Jørgensen, Uffe; Dalgaard, Tommy; Kristensen, Erik Steen. |
| One of the aims of organic farming is to “reduce the use of non-renewable resources (e.g. fossil fuels) to a minimum”. So far, however, only very little progress has been made to introduce renewable energy in organic farming. This paper presents energy balances of Danish organic farming compared with energy balances of conventional farming. In general, the conversion to organic farming leads to a lower energy use (approximately 10% per unit of product). But the production of energy in organic farming is very low compared with the extensive utilisation of straw from conventional farming in Denmark (energy content of straw used for energy production was equivalent to 18% of total energy input in Danish agriculture in 1996). Biomass is a key energy carrier... |
| Tipo: Journal paper |
Palavras-chave: Recycling; Balancing and resource management. |
| Ano: 2005 |
URL: http://orgprints.org/3959/1/3959_Biomass.pdf |
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| Alrøe, Hugo Fjelsted; Kristensen, Erik Steen. |
| Environmental issues and questions of sustainability and precaution have come into focus in agriculture, and in society in general, in recent decades. There are, however, many different meanings of sustainability and precaution, and there is no evident connection between these new normative concepts and the traditional moral theories. This paper seeks an ethical basis for sustainability and precaution – a common framework that can serve as a means of resolving the conceptual ambiguities of the new normative concepts and as a means of resolving conflicts between new and traditional moral concepts and theories. The method employed is to analyse the past and possible future extension of ethics and establish an inclusive framework of ethical extension. The... |
| Tipo: Journal paper |
Palavras-chave: Indicators and other value-laden measures Values; Standards and certification. |
| Ano: 2003 |
URL: http://orgprints.org/552/1/Systemic_Ethic_published_2003.pdf |
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| Alrøe, Hugo Fjelsted; Kristensen, Erik Steen. |
| In recent decades agriculture has undergone rapid technological and structural changes. This development has raised concerns about the sustainability of modern agriculture and motivated an interest in alternative and, perhaps, more sustainable agricultural systems. Agriculture involves both ecological and social systems, and research in agricultural systems therefore faces the dual challenge of understanding complex agro-ecosystem interactions and handling the involvement of human actors, their practices and preferences. A major survey to assess the consequences of phasing out pesticide use in Denmark is presented as an example of a study confronting this dual challenge. The survey included the modelling of a total organic conversion of Danish agriculture,... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Research methodology and philosophy; Food systems. |
| Ano: 2000 |
URL: http://orgprints.org/10686/1/Presentation%2Dtext.pdf |
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| Alrøe, Hugo Fjelsted; Vaarst, Mette; Kristensen, Erik Steen. |
| Der foregår løbende både praktisk udvikling og teoretisk refleksion i relation til husdyrvelfærd. Endvidere evalueres og ændres reglerne omkring husdyrvelfærd løbende, både i Danmark og i EU. Formålet med nærværende kapitel er at diskutere begrebet husdyrvelfærd i forbindelse med principperne i det økologisk jordbrug. Det sker med udgangspunkt i spørgsmålet: er der, ud over de gældende regler, særlige værdimæssige, etiske, videnskabelige eller reguleringsmæssige forhold, der influerer på hvordan dyrevelfærd opfattes i økologisk jordbrug, set i forhold til det øvrige jordbrug? Eller med andre ord: kan de nuværende forskelle i regler, og i opfattelsen af dyrevelfærd, begrundes i mere grundliggende forhold i økologisk jordbrug? Og i så fald: i hvilken retning... |
| Tipo: Report chapter |
Palavras-chave: Farming Systems; Health and welfare. |
| Ano: 2000 |
URL: http://orgprints.org/13756/1/13756.pdf |
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| Registros recuperados: 34 | |
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