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| Registros recuperados: 34 | |
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| Pietsch, G.; Friedel, J.K.; Freyer, B.. |
| In Anbausystemen des Ökologischen Landbaus ist die Stickstoffzufuhr über die Symbiose aus Wurzelknöllchenbakterien (Rhizobien) und Leguminosen (Familie Fabaceae) die wichtigste Stickstoffquelle. Unter den klimatischen Bedingungen der pannonischen Region im Osten Österreichs kann sowohl das Wachstum und die Entwicklung der Leguminosen, als auch die Stickstoffixierleistung durch Trockenperioden limitiert werden. Der Beitrag der Leguminosen zur Stickstoffversorgung der Fruchtfolgeglieder ist neben den standortspezifischen Faktoren u.a. von der Leguminosenart, dem Gemengepartner (Gras), und der Anbau- und Nutzungsform (Anbaudauer, Schnittnutzung oder Gründüngung) abhängig. Ziel des Forschungsprojektes ist die Optimierung des Futterleguminosenanbaus im... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Crop combinations and interactions. |
| Ano: 2004 |
URL: http://orgprints.org/6301/1/Pietsch_et_al_2004_PBG_NFixierung.pdf |
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| Gollner, M.; Friedel, J. K.; Freyer, B.. |
| Der oekologische Landbau laesst aufgrund der systemeigenen spezifischen Fruchtfolgen, Duengemassnahmen und Bodenbearbeitung positive Auswirkungen auf die Entwicklung d arbuskulaeren Mykorrhiza und die Kolonisierung der Kulturpflanzen erwarten. Diese positiven Auswirkungen wurden in vergleichenden Untersuchungen ueber die Auswirkungen einzelner Kulturmassnahmen auf die arbuskulaere Mykorrhiza in konventionell und nachhaltig bewirtschafteten Standorten nachgewiesen. Wenn in der Zukunft eine Verringerung des Eintrages an Agrochemikalien in die Kulturlandschaften angestrebt wird, muss der Bedeutung der arbuskulaeren Mykorrhiza eine hoehere Aufmerksamkeit gewidmet werden. Um die positiven Auswirkungen der arbuskulaeren Mykorrhiza in landwirtschaftlichen... |
| Tipo: Journal paper |
Palavras-chave: Soil; Crop husbandry. |
| Ano: 2004 |
URL: http://orgprints.org/2358/1/Gollner_et_al_2004_PBG_mykorrh.pdf |
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| Gassner, B.; Freyer, B.; Leitner, H.. |
| The debate on labour quality in science is controversial as well as in the organic agriculture community. Therefore, we reviewed literature on different labour quality models and definitions, and had key informant interviews on labour quality issues with stakeholders in a regional oriented organic agriculture bread food chain. We developed a labour quality model with nine quality categories and discussed linkages to labour satisfaction, ethical values and IFOAM principles. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Social aspects. |
| Ano: 2008 |
URL: http://orgprints.org/12102/1/Gassner_12102_ed.doc |
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| Kaar, B.; Freyer, B.. |
| In this research, we compared the weed species development in conventional and organic winter cereals in Upper Austria. The investigations were done in 2003 in 15 paired conventional and organic farms. Following Braun-Blanquet procedure, a total of 105 weed species were found. 57 of them were found only in organic, four only in conventional fields and 48 in both. Therefore, there were 105 weed species in organic fields and 52 in conventional fields. More of the endangered species (Red List species) were found in organic fields. Low species diversity observed in 2003 compared to that in 1988 in the same field was attributed to higher temperature and low rainfall in the recent years. The question arises if under increasing temperature and dryness the... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Weed management. |
| Ano: 2008 |
URL: http://orgprints.org/12118/1/Kaar_12118_ed.doc |
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| Hadatsch, S.; Kratochvil, R.; Vabitsch, A.; Freyer, B.. |
| Marchfeld is one of the most important crop production regions in Austria. High input agriculture causes environmental problems, especially groundwater pollution by nitrate and pesticides, decline of soil fertility and ecosystem diversity. While Austria has about 8.3 % certified organic farms, Marchfeld has only 1.5 %. The presented study was carried out in order to investigate the potentials of organic farming for solving environmental problems. The main interest of this work is the present economic and social situation of organic agriculture, its environmental effects and the identification of factors that support or hamper the further increase of organic farming in this region |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Policy environments and social economy; Farming Systems. |
| Ano: 2000 |
URL: http://orgprints.org/4104/1/4004%2Dhabdatsch%2DS%2Det%2Dal%2D2000%2Dmarchfeld2.pdf |
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| Freyer, B.; Weik, S.. |
| Agricultural systems as well as consumer patterns influence the green house gas emissions. Therefore, we analysed different farming systems, consumption patterns and seasonal oriented food consumption. Whereas conventional production and the current meat oriented nutrition patterns lead to high green house gas emissions, there is a tremendous reduction potential, if products are organically produced and if there is a shift to vegetarian-based diets.. Nevertheless, there is a need for research in terms of data quality, and a differentiation of farming systems as well as nutrition patterns. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Environmental aspects. |
| Ano: 2008 |
URL: http://orgprints.org/14832/1/14832.pdf |
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| Farthofer, R.; Friedel, J. K.; Pietsch, G.; Rinnhofer, T.; Loiskandl, W.; Freyer, B.. |
| Data on the potential of intercrops to reduce soil nitrate contents, on their N accumulation and biological nitrogen fixation (BNF) are lacking for organic farming in the dry, pannonic region of Eastern Austria. The effect of legumes, non-legumes, and legumes + non-legumes used as intercrops on inorganic soil nitrogen, crop yield and biomass N, and BNF were tested in comparison to bare fallow. Non-legumes and legumes + non-legumes were more efficient than legumes in reducing inorganic soil N contents in autumn and nitrate contents in soil solution from the subsoil in winter. This reduction in inorganic soil N did not last until March of the following year due to an N mineralisation from the mulch. The legume + non-legume mixture contained a larger amount... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop combinations and interactions; Soil. |
| Ano: 2004 |
URL: http://orgprints.org/5789/1/Farthofer_et_al_2004_intercrops.pdf |
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| Mäder, P.; Vierheilig, H.; Streitwolf-Engel, R.; Boller, T.; Freyer, B.; Christie, P.; Wiemken, A.. |
| We studied the transport of "&N from a soil compartment separated from a plant root compartment by a hydrophobic polytetrafuoroethylene (PTFE) membrane to plants in the presence and absence of arbuscular mycorrhizal fungi (AMF). We have previously shown that this type of membrane efficiently inhibits mass fow and diffusion of mobile ions in the soil solution in an abiotic system, but can be penetrated by the hyphae of mycorrhizal fungi. Mycorrhizal tomatoes (Lycopersicon esculentum) colonized by Glomus mosseae were grown at two N fertilizer concentrations in a root compartment. A PTFE membrane was placed between the root compartment and an adjoining soil compartment that was inaccessible to the roots but accessible to the AMF hyphae (hyphal... |
| Tipo: Journal paper |
Palavras-chave: Soil biology. |
| Ano: 2000 |
URL: http://orgprints.org/26770/1/Maeder_et_al_2000_NP.pdf |
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| Kratochvil, R.; Lindenthal, T.; Heß, J.; Freyer, B.. |
| Die tatsächlichen oder potentiellen volkswirtschaftlichen (externen) Kosten durch Umweltbelastung der intensiven Landbewirtschaftung werden der Allgemeinheit aufgebürdet, anstatt als Preis- bzw. Kostenfaktor in das betriebliche Rechnungswesen einzugehen. U.a. in Hinblick auf eine Verringerung externer Kosten der Landwirtschaft infolge Grund- und Trinkwasserbelastung wird der Ökologische Landbau als wirksame Alternative diskutiert. Eine Vielzahl wissenschaftlicher Untersuchungen belegt denn auch das hohe Maß an Grundwasserverträglichkeit des Biologischen Landbaus: So wiesen u. a. VEREIJKEN und WIJNANDS (1990),BRANDHUBER und HEGE (1992), MATTHEY (1992), SCHULTE (1996), BERG et al. (1997) sowie SCHLÜTER et al. (1997) deutlich niedrigere Nitratgehalte des... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Community development; Air and water emissions. |
| Ano: 1999 |
URL: http://orgprints.org/4105/1/4105%2Dkratochvil%2Dr%2Det%2Dal%2D1999%2Dwasser%2Dberlin.pdf |
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| Pali, P.N; Freyer, B.; Kaaria, S. K; Delve, R.J. |
| Rapid economic growth in Uganda has resulted from the strong emphasis on the market liberalization policies tied to export promotion. Commercialization of smallholder farmers’ products has been at the heart of the country’s development program since the year 2000. This study describes how the organic farming sector links farmers to markets through community empowerment, resource development and market linkage intervention strategies using a qualitative analysis of the institutional support provided by the organic sector. The private sector assures technical commodity related support, organic export linkage, and higher incomes while the civil service society emphasizes facilitation to a wide range of market linkages and builds capacities along aspects of... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general. |
| Ano: 2007 |
URL: http://orgprints.org/9431/1/9431_Pali_Poster.pdf |
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| Kratochvil, R.; Fromm, E.; Heß, J.; Freyer, B.. |
| In 1992 the community of Moorbad Harbach (Austria), located near the border of the Czech Republic and dominated by extensive agricultural practice on small scale farms, decided to initiate activities for regional devolopment. About 40 farms (27 %) converted to organic farming, a local marketing service as well as regional food processing businesses (slaughterhouse, dairy), operating as linkages between regional agriculture and the local spa hotel were founded. The basic idea for the work presented here was to evaluate the – especially ecological – consequences of such a regional conversion. One part of this attempt of evaluation was carried out as a LCA for the agricultural production in Moorbad Harbach. The emphasis of the study was to compare plant... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Community development. |
| Ano: 2000 |
URL: http://orgprints.org/4116/1/4116%2Dkratochvil%2Dr%2Det%2Dal%2D2000%2DIFOAM%2Dlifecycle.pdf |
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| Pietsch, G.; Freyer, B.. |
| Die Erbse gilt als die wichtigste Körnerleguminose im Ökologischen Landbau, sowohl in ihrer Funktion als Leguminose zur Versorgung des Betriebes mit Stickstoff, als auch für die Futterproduktion (Geflügel und Schweine). Unter der Annahme einer richtigen Stellung in der Fruchtfolge, gelten der Ertrag, die N2-Fixierungsleistung sowie die Konkurrenzkraft gegenüber Beikraut als die wichtigsten Merkmale in der Entscheidungsfindung der Sortenauswahl. Für die Tierernährung ist die Proteinqualität, im engeren Sinn der Gehalt an essentiellen Aminosäuren entscheidend. Ziel dieses Projektes ist die Untersuchung verschiedener Erbsensorten bzw. -gemenge sowie von verschiedenen Hauptfrucht (Erbse)-Zwischenfrucht (legum/nicht legum)-Kombinationen im Hinblick auf ihre... |
| Tipo: Journal paper |
Palavras-chave: Cereals; Pulses and oilseeds. |
| Ano: 2004 |
URL: http://orgprints.org/2355/1/Pietsch_et_al_2004_PBG_Erbsen.pdf |
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| Pietsch, G.; Gabler, C.; Wagentristl, H.; Freyer, B.. |
| Mischkulturen können unterschiedliche Wachstumsbedingungen besser ausschöpfen als Monokulturen. Im Gemenge mit Leguminosen können Nicht-Leguminosen überschüssigen Stickstoff aus der Bodenlösung aufnehmen. Ein ökonomischer Zusatzertrag wird bei einer Beimengung von Leindotter zu Erbsen oder Sommergerste diskutiert. Erbsenreinsaaten erreichten im Vergleich zu beiden Leindotter-Varianten gesichert höhere Erträge; Erbsen mit resp. ohne Koriander unterschieden sich nicht. Sommergerste – Reinsaaten waren bezüglich dem Ertrag den Mischungen mit Leindotter überlegen; Koriander wurde von der Sommergerste vollständig unterdrückt. Abschließend kann festgehalten werden, dass unter limitierenden Niederschlägen im pannonischen Klimaraum dem Mischkulturanbau enge Grenzen... |
| Tipo: Journal paper |
Palavras-chave: Crop combinations and interactions. |
| Ano: 2004 |
URL: http://orgprints.org/5791/1/Pietsch_et_al_2004_PBG_Mischkulturen.pdf |
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| Surböck, A.; Gollner, M.; Heinzinger, M.; Friedel, J.K.; Freyer, B.. |
| Auf dem landwirtschaftlichen Betrieb Rutzendorf soll ein umfassendes Langzeitmonitoring zur Entwicklung des biologischen Landbaus eingerichtet werden. Ein wissenschaftliches Konzepts soll erarbeitet und zum Teil schon umgesetzt werden. Die Wirkungen der Umstellung auf Ökologischen Landbau auf Boden, Wasser, Flora und Fauna soll anhand ausgewählter Eigenschaften erfasst werden. Entsprechend der Konzeption des Betriebs (vgl. ¿Konzept Biobetrieb Rutzendorf¿, Bericht an das BMLFUW, IfÖL, BOKU, März 2002) sollen drei Düngungsvarianten verglichen werden. Die Bedeutung verschiedener vorhandener Biotope (Gehölzstreifen, Hecken, ...) soll charakterisiert und neue, ergänzende Biotope geplant und angelegt werden. Versuchsort und -gegenstand ist der... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Composting and manuring. |
| Ano: 2004 |
URL: http://orgprints.org/6234/1/Surb%C3%B6ck_et_al_2004_PBG_Mubil.pdf |
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| Bett, K. E.; Freyer, B.. |
| Formal organic agriculture in Kenya dates back to the early eighties when the first pioneer organic training institutions were established. During the same period, a few horticultural companies started growing organic vegetables for export. Initial efforts to promote organic agriculture in Kenya were made by rural development non-governmental organizations (NGOs), faith based organizations and community based organizations (CBOs). They seek to help rural farmers in addressing the issue of declining agricultural productivity (especially the degradation of soils and natural resource base), high poverty incidences, food insecurity and low incomes which pre-vented farmers from assessing high costs inputs. Currently Kenya has five major players in organic... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general. |
| Ano: 2007 |
URL: http://orgprints.org/9816/1/9816_Bett_Poster.pdf |
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| Surböck, A.; Freyer, B.; Friedel, J.K.; Gollner, M.; Heinzinger, M.. |
| A long term field monitoring concerning the development of organic farming is performed at the bio-farm "Rutzendorf" of the BVW GmbH in the Marchfeld region East of Vienna. It is an interdisciplinary project of eleven scientific institutes which started in 2003. The aims of the project are: examination of changes concerning soil and plant parameters with the conversion to organic farming; investigation of the effects of different organic fertilisation systems (green manure, communal green forage compost, farmyard manure) on soil properties and on the development of crops; analysis of existing biotops (hedges and field stripes) on the farm and planning and selective realization of new biotops with the aim of enhancing the biodiversity of the area. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general. |
| Ano: 2005 |
URL: http://orgprints.org/3509/1/3509.pdf |
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| Registros recuperados: 34 | |
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