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| Cooper, Julia; Reed, Eleanor Y.; Hörtenhuber, Stefan Josef; Lindenthal, Thomas; Løes, Anne-Kristin; Mäder, Paul; Magid, Jakob; Oberson, Astrid; Kolbe, Hartmut; Möller, Kurt. |
| Maintaining sufficient soil phosphorus (P) levels for non-limiting crop growth is challenging in organic systems since off-farm inputs of P are restricted. This study assessed the status of P on organic farms in Europe using soil test results for extractable P. Data was obtained from published literature, unpublished theses, and various national and regional databases of soil test values. Most of the data (15,506 observations) came from field scale soil tests, but in some cases (1272 observations) values had been averaged across a farm. Farm scale and field scale data were analysed separately and the impact of farm type (arable, dairy, grassland, horticulture, mixed, poultry, unknown) was assessed. Soil test results were assigned to P classes from very low... |
| Tipo: Journal paper |
Palavras-chave: Soil quality; Nutrient turnover; Farm nutrient management. |
| Ano: 2018 |
URL: http://orgprints.org/32707/1/Cooper%20et%20al%202017%20NCAES.pdf |
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| Hörtenhuber, Stefan Josef; Weissengruber, Lina; Friedel, Jürgen K.; Möller, Kurt. |
| An efficient phosphorus (P) recycling from urban areas is becoming an increasing issue due to the scarcity of natural P deposits. In order to assess the environmental performance of different approaches of P recycling, a LCA assessment and risk assessment studies were carried out. Generally, we found the supply of recycled P-fertilisers (RPFs) to be competitive as compared to conventional sources in terms of LCA results analysed in this contribution: per kg P and with exclusion of infrastructure processes, the highest abiotic depletion potential is shown for conventional mineral fertilisers based on phosphate rocks due to the finite mineral P resources. For fossil primary energy demand, the recycled fertilisers (struvites and an ash-based fertiliser... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil quality; Composting and manuring. |
| Ano: 2016 |
URL: http://orgprints.org/30692/1/hoertenhuber-etal-2016-LCA-Food_2016_Book-Of-Abstracts.pdf |
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| Hörtenhuber, Stefan Josef; Drapela, Thomas; Petrasek, Richard; Neumayr, Christoph; Zolllitsch, Werner. |
| This contribution provides insights in methods and results from seven Austrian organic, alpine and grassland-based dairy farms, which were analysed concerning their ecological sustainability. The milk yield per area unit was found as an appropriate parameter to differentiate extensive from intensive dairy farms, which also allows for a rough estimation of LCA results. Two farms which were characterised as ‘alpine-extensive’ generally show advantages if they are related to units of area and also in terms of the biodiversity potential. Two farms in hilly regions (transition from alpine to lowland area) produce relatively high amounts of milk per hectare farmland and hence show good results for LCA indicators, if related to product units. Three alpine farms... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle; Air and water emissions; Biodiversity and ecosystem services. |
| Ano: 2013 |
URL: http://orgprints.org/21512/1/21512_Hoertenhuber.pdf |
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| Løes, Anne-Kristin; Bünemann, Else K.; Cooper, Julia; Hörtenhuber, Stefan Josef; Magid, Jakob; Oberson, Astrid; Möller, Kurt. |
| Organic farming systems need to replace nutrients exported via farm products, especially phosphorus (P) which may otherwise become depleted in soil in the long term. In Europe, EU regulations for organic production are shaping the farming systems with respect to inputs of nutrients. Permitted off-farm P sources include conventional animal manure, composted or anaerobically digested organic residues, rock phosphate, and some animal residues such as meat and bone meal. The recent proposed revision of EU regulations for organic production (2014) puts less emphasis on closing nutrient cycles and instead aims at minimizing off-farm inputs, to reduce the risk of importing contaminants. This development, which has received little attention from the organic... |
| Tipo: Journal paper |
Palavras-chave: Composting and manuring; Quality and evaluation of inputs; Regulation. |
| Ano: 2016 |
URL: http://orgprints.org/30522/1/OA%20regulations%202016%20Loes%20et%20al%20printed.pdf |
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| Hörtenhuber, Stefan Josef; Theurl, Michaela C.; Möller, Kurt. |
| Whereas fertilisers based on phosphate rock show a high abiotic resource depletion potential, phosphorous (P) recycling fertilisers such as struvite are related to a high fossil primary energy demand. Compost can result in very high acidification, eutrophication and global warming potentials. Sewage sludge, its ash and P-recycling fertilisers based thereon, Thomas phosphate or meat and bone meal as well as especially wood ash provide significantly lower environmental impacts but have partially other disadvantages, e.g. P-availability or pollutant accumulation. For future P-supply in agriculture, it is important to recover P from urban waste disposal. The life cycle assessment (LCA) represents an important contribution to analyse strengths and weaknesses... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil quality Composting and manuring Recycling; Balancing and resource management Nutrient turnover. |
| Ano: 2017 |
URL: http://orgprints.org/31899/1/%C3%96kobilanzen%20von%20Recycling-Phosphor-D%C3%BCngemitteln.pdf |
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