|
|
|
|
|
| Friedel, Jürgen K.; Kasper, Martina; Schmid, Harald; Hülsbergen, Kurt-Jürgen; Freyer, Bernhard. |
| On organic farms, phosphorus (P) balances are often negative because no or little P is imported into the farms. Negative P balances may deteriorate P availability over time. We calculated P balances of the main farm production types in organic farming for the main Austrian production areas. Using data from various data bases and expert knowledge, we applied the sustainability assessment tool REPRO for calculations. The P balances were balanced to slightly deficient for organic forage dairy farms, cash crop farms and permanent crop farms, and slightly to highly surplus on organic refinement, pig producing farms. Deficient P balances, mainly on organic cash crop farms, call for P input especially on farms where available P fractions in the soil are very low... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Composting and manuring Recycling; Balancing and resource management Nutrient turnover Air and water emissions. |
| Ano: 2014 |
URL: http://orgprints.org/23853/1/23853_Friedel_MM.pdf |
| |
|
|
| Kasper, Martina; Freyer, Bernhard; Schmid, Harald; Hülsbergen, Kurt-Jürgen; Amon, Barbara; Friedel, Jürgen K.. |
| About 8.8 % (UBA 2010) of the total greenhouse gas (GHG) emissions in Austria are caused by agricultural practices. Besides the release of climate relevant gases, C-sequestration occurs depending on the natural conditions and farming system. The focus of the project was to describe the GHG-emissions and sinks of the most relevant farming types, both organic and conventional, within the main production areas in Austria. Results of an intensively cultivated region in the North-West are presented. Based on the input data, six model-farms were created with the programme REPRO, whereby forage production, cash crops and refinement systems were considered. All systems had a positive humus balance and sequestered carbon in the soil, especially forage... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Air and water emissions. |
| Ano: 2013 |
URL: http://orgprints.org/21469/1/21469_kasper.pdf |
| |
|
|
| Kasper, Martina; Freyer, Bernhard; Amon, Barbara; Hülsbergen, Kurt-Jürgen; Schmid, Harald; Friedel, Juergen K.. |
| Landwirtschaftliche Nutzungssysteme sind in unterschiedlicher Weise an der Emission und Speicherung von klimarelevanten Gasen (CO2, CH4 und N2O) beteiligt. Die wesentlichen Projektziel sind die Bereitstellung von Daten- und Berechnungsgrundlagen für eine umfassende Darstellung von Profilen treibhausgasrelevanter Emissionen und Senken landwirtschaftlicher Betriebe in den acht Hauptproduktionsgebieten Österreichs. In jeder Region werden die beiden vorherrschenden Betriebstypen mit dem Programm REPRO modelliert, da es die Analyse der C-, N- und Energieflüsse im System Boden-Pflanze-Tier-Umwelt kombiniert. Als Beispiel werden die Ergebnisse des Hauptproduktionsgebietes "Nordöstliches Flach- und Hügelland" im Anschluss präsentiert. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Nutrient turnover; Quality and evaluation of inputs. |
| Ano: 2011 |
URL: http://orgprints.org/17776/3/Kasper_17776.pdf |
| |
|
|
|
