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| Registros recuperados: 44 | |
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| Weissengruber, Lina; Friedel, Jürgen K.; Möller, Kurt. |
| Der Vorsorgewert wurde nur von Cr überschritten. Es zeigt sich, dass das Verhältnis von Schadstoff zu Phosphor eine wichtige Rolle spielt. Von Düngern mit einem geringen P-Gehalt, wie den Komposten, muss eine größere Menge ausgebracht werden, was in dieser Berechnung zu einer höheren Schadstoffanreicherung führte. Grüngutkompost hatte das höchste Akkumulationspotenzial für alle Schwermetalle, nur bei Cadmium wurde er von Triplesuperphosphat übertroffen. Vermutlich ist die atmosphärische Schermetallbelastung von Grünschnitt in Städten und entlang von Straßen besonders hoch und konzentriert sich im Kompost. Die Schadstoffgehalte der Dünger können, je nach Ausgangssubstraten, unterschiedlich sein. Als Phosphordünger eingesetzt, hatten Struvite, Fleisch- und... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general; Soil quality; Composting and manuring; Environmental aspects. |
| Ano: 2016 |
URL: http://orgprints.org/30545/1/ALVA_Tagung_2016_Weissengruber-et-al_Risk-Assessment.pdf |
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| Weissengruber, Lina; Friedel, Jürgen K.; Möller, Kurt. |
| In order to assess the risk of the use of recycled phosphorus (P) fertilisers for organic farming, the potential accumulation of heavy metals in soil after a 200-year fertilizer application equivalent to 11 kg P ha-1 yr-1 was calculated in a mass balance approach. Both fertilizers currently allowed in organic farming and recycled P fertilizers were regarded. For heavy metals, four scenarios with two soil pH levels (pH 5 and pH 7) and two precipitation excess levels (F 0.1 and F 0.3 m yr-1) were calculated. Recycled P fertilizers like struvite, meat- and bone meal, ashes, sewage sludge and digestate, as well as phosphate rock and triple superphosphate had a higher P content and a lower heavy metal-to-P ratio than composts. Consequently, compost application... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil quality; Composting and manuring; Nutrient turnover. |
| Ano: 2017 |
URL: http://orgprints.org/31898/1/Absch%C3%A4tzung%20des%20Risikos%20einer%20Schwermetall-Akkumulation.pdf |
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| Friedel, Jürgen K.; Scheller, Edwin. |
| We hydrolysed (6 M HC1) soll organic matter (SOM) from mineral top-soil horizons, litter, and the fraction rendered extractable by 0.5 M K2SO4 after Chloroform fumigation from eight soils under arable, grassland and forest use. covering a wide ränge of site conditions. Our aims were to quantify amino acid contents in the hydrolysate derived from whole soil. litter and soil microbial biomass, respectively. We also wanted to test if the pattern of hydrolysable amino acids of the whole soil is uniform irrespective of site conditions and land use. and if there i s a relation with the amino acid pattern of the respective soil microbial Community. The content of hydrolysable amino acids in the whole soil was higher in the soil samples from grassland and forest... |
| Tipo: Journal paper |
Palavras-chave: Nutrient turnover; Soil biology. |
| Ano: 2002 |
URL: http://orgprints.org/1372/1/kein%2DDokument.pdf |
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| Friedel, Jürgen K.; Gollner, Manfred; Hrbek, Regina; Jakupaj, Shpresa; Flamm, Clemens; Oberforster, M.; Zechner, E.; Kinastberger, A.; Löschenberger, F.. |
| The root length density, arbuscular mycorrhizal (AM) colonisation and the total AM root length density of 12 winter wheat cultivars have been studied at seven sites in eastern Austria under organic farming. Root length density did not differ between the cultivars whereas AM colonisation and total AM root density did. Site effects were more pronounced than cultivar effects. All three traits generally were on a higher level in calcaric Phaeozems than in Cambisols. The AM colonisation and total AM root density decreased with increasing plant height and were positively correlated with crop yield. On calcaric Phaeozems, root length density in the subsoil was obviously more important for drought tolerance than AM colonisation in the topsoil. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation Soil biology. |
| Ano: 2008 |
URL: http://orgprints.org/11892/1/Friedel_11892_rev.doc |
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| 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 |
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| Surböck, Andreas; Heinzinger, Markus; Schmid, Harald; Friedel, Jürgen K.; Freyer, Bernhard. |
| Fodder legumes, like lucerne, make a significant contribution to a positive humus balance and nitrogen supply on organic farms. To determine the required lucerne percentage to meet these targets, several shares of lucerne were modelled on the basis of empirical data of an eight-field crop rotation. The lower limit for ensuring optimum humus and nitrogen supply in this rotation was approximately 17 % lucerne. The calculation of the data was performed with the agricultural software REPRO. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop combinations and interactions. |
| Ano: 2013 |
URL: http://orgprints.org/21439/1/21439_surboeck.pdf |
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| Reiter, Simon; Suntinger, Marlene; Friedel, Jürgen K.. |
| Die vorliegende Arbeit untersucht die schwierige Herausforderung, Kleegras in Systemen reduzierter Bodenbearbeitung vollständig umzubrechen. In einem Feldversuch in Bayern wurde eine Eigenbau-Zinkenwalze, die gegen die Fahrtrichtung rotiert, als Nachläufer eines Kreiselgrubbers mit Stabwalze getestet. Die Erwartung war eine verstärkte Austrocknung der Kleegras-Stoppeln bei Einsatz der Zinkenwalze. Die Versuche wurden auf drei Schlägen durchgeführt, die sich in Bodenart und Humusgehalt unterschieden (lehmiger Sand, sandig-schluffiger Lehm, anmooriger-toniger Lehm), mit Kleegras unterschiedlichen Alters. Die Trockenmasse sowie die Anzahl der Pflanzen der wiederaufwachsenden Biomasse waren bei der Kombination von rotierender Zinkenwalze mit Kreiselgrubber und... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Soil tillage Soil Weed management. |
| Ano: 2015 |
URL: http://orgprints.org/27155/1/27155_reiter.pdf |
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| Last, Luisa; Arndorfer, Michaela; Bailey, Debra; Balázs, Katalin; Dennis, Peter; Dyman, Tetyana; Fjellstad, Wendy; Friedel, Jürgen K.; Garchi, Salah; Geijzendorffer, Ilse; Herzog, Felix; Jeanneret, Philippe; Jongman, Rob; Kainz, Maximilian; Lüscher, Gisela; Moreno, Gerado; Nkwiine, Charles; Paoletti, Maurizio; Pointereau, Philippe; Sarthou, Jean Pierre; Schneider, Manuel; Stoyanova, Siyka; Wolfrum , Sebastian; Kölliker, Roland. |
| Genetic variability is the fundament of life. Large genetic variability within species is the basis for adaptation to changing environmental conditions. Farmers and breeders have developed a multitude of crop cultivars and animal breeds to stabilize and increase quality and productivity. This study evaluated genetic diversity within different organic and non-organic farming systems using crop-cultivar and livestock-breed information as simple indicators. Data was collected using on-farm surveys in 15 case study regions in Europe and beyond. Selected indicators revealed strong differences of cultivar diversity between different countries and farming systems across Europe. No or only small differences were detectable between organic and non-organic farming... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Breeding and genetics; Biodiversity and ecosystem services. |
| Ano: 2013 |
URL: http://orgprints.org/21281/1/21281_Last.pdf |
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| Pietsch, Gabriele; Starz, Walter; Friedel, Jürgen K.; Freyer, Bernhard. |
| The main source of nitrogen in organic farming is biological nitrogen fixation, the result of a symbiosis between legumes and nodulating bacteria. Lucerne (Medicago sativa L.) is the most biomass efficient forage legume under the semiarid conditions in East-ern Austria. Farmers inquired about information on the best site-adapted lucerne variety, but knowledge about water use and productivity of different lucerne varieties in organic farming is sparse. From 2005-2006, four lucerne varieties were studied with respect to above- and below-ground biomass production, biological nitrogen fixation and water use. The aim of this study was to find first practical criteria for farmers to choose lucerne varieties for green manure use, adapted to the dry region in the... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Nutrient turnover Cereals; Pulses and oilseeds. |
| Ano: 2007 |
URL: http://orgprints.org/9391/1/9391_Pietsch_Poster.pdf |
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| Lehner, Daniel; Mayr, Tobias; Starz, Walter; Gollner, Gabriele; Pfister, Rupert; Rohrer, Hannes; Friedel, Jürgen K.. |
| Die Anbaueignung sechs verschiedener traditioneller Speisekörnerleguminosen (Alblinse, Berglinse, Rotholzer Trockenbohne, Black Turtle Buschbohne, Palerbse und blaue Lupine) im Alpenvorland wurde in diesem Versuch getestet. Die Versuchsfragen waren Anbaueignung, Unterschiede im Saatsystem (Breitsaat und Reihensaat) sowie Deckungsbeiträge. Unter allen Speisekörnerleguminosen erzielten die Bohnen die höchsten Erträge (1028 und 1628 kg/ha), gefolgt von der Palerbse (766 kg/ha) und den Linsen (457 und 537 kg/ha). Zwischen den beiden Saatsystemen zeigten sich keine signifikanten Unterschiede. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Vegetables Cereals; Pulses and oilseeds Weed management. |
| Ano: 2019 |
URL: http://orgprints.org/36164/1/Beitrag_237_final_a.pdf |
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| Herzog, Felix; Arndorfer, Michaela; Bailey, Debra; Balázs, Katalin; Dennis, Peter; Dyman, Tetyana; Fjellstad, Wendy; Friedel, Jürgen K.; Garchi, Salah; Geijzendorffer, Ilse; Jeanneret, Philippe; Jongman, Rob; Kainz, Maximilian; Kölliker, Roland; Last, Luisa; Lüscher, Gisela; Moreno, Gerardo; Nkwiine, Charles; Paoletti, Maurizio; Pointereau, Philippe; Sarthou, Jean-Pierre; Schneider, Manuel; Siyka, Stoyanova; Targetti, Stefano; Viaggi, Davide; Wolfrum, Sebastian. |
| Organic and low-input farming systems provide habitats for wildlife on farmland. The EU FP7 project BIOBIO has identified a core set of 23 indicators relating to the diversity of habitats, of species, of crops and of livestock. Management indicators capturing the pressure on biodiversity are also proposed. The indicators were identified in an iterative process between scientists and stake-holders to make sure that they are not only scientifically sound but also practicable and attractive. They were tested in 12 case study regions on four major farm types. Allocating 0.25 % of the CAP budget to a farm scale biodiversity monitoring would allow to measure and analyse the indicators on 50,000 farms across Europe. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Technology assessment; Biodiversity and ecosystem services; Consumer issues; Policy environments and social economy. |
| Ano: 2013 |
URL: http://orgprints.org/21318/1/21318_Herzog.pdf |
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| Schweinzer, Agnes; Gollner, Gabriele; Friedel, Jürgen K.. |
| Die Luzerne (Alfalfa, Medicago sativa L.) ist die im Trockengebiet Ostösterreichs am meisten genutzte Futterleguminose. Im ökologischen Landbau stellt sie die wichtigste Quelle für die Stickstoffversorgung der Fruchtfolge dar.Nachdem Alfalfa für ihren hohen Wasserverbrauch bekannt ist, sind Informationen zur Wasserökonomie essentiell, in Sortenlisten aber bisher nicht vorhanden.Ziel dieser Arbeit war, mit einem Set pflanzenphysiologischer Messmethoden (z.B. Druckkammermethode nach Scholander, Porometer) eine standortsangepasste Sorte zu finden. in weiterer Folge sollen geeignete Sorten für Züchtungszwecke angeboten werden können. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general; Crop husbandry; Environmental aspects. |
| Ano: 2011 |
URL: http://orgprints.org/17549/3/Schweinzer_17549.pdf |
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| Registros recuperados: 44 | |
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