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10. Wissenschaftstagung Ökologischer Landbau Organic Eprints
Alföldi, Thomas; Dubois, David; Fried, Padruot; van der Heijden, Marcel; Kreuzer, Michael; Lüscher, Andreas; Mayer, Jochen; Strasser, Fredi; Willer, Helga; Zerger, Uli.
Die 10. Wissenschaftstagung zum ökologischen Landbau findet 2009 in der Schweiz statt. Ausgerichtet wird sie von der Forschungsanstalt Agroscope Reckenholz-Tänikon ART, dem Forschungsinstitut für biologischen Landbau (FiBL), dem Departement Agrar- und Lebensmittelwissenschaften der Eidgenössischen Technischen Hochschule (ETH) sowie der Stiftung Ökologie & Landbau (SÖL). Unter dem Motto «Werte – Wege – Wirkungen» präsentieren und diskutieren die Teilnehmenden aktuelle ethische Aspekte, produktionstechnische Fortschritte und gesellschaftspolitisch relevante Auswirkungen des biologischen Landbaus. Zusätzlich ist geplant, mit ausgewählten Veranstaltungen speziell auch Bioberaterinnen und Praktiker anzusprechen. Einzelne Veranstaltungen der Konferenz...
Tipo: Project description Palavras-chave: "Organics" in general.
Ano: 2009 URL: http://orgprints.org/8603/1/2009%2D02%2D11%2DCall%2Dfor%2Dpapers.pdf
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AGTEC-Org Agronomy Handbook of Methods Organic Eprints
Celette, Florian; Peigne, Joséphine; Thomsen, Ingrid Kaag; Carcea, Marina; Aveline, Anne; Hellou, Guénaëlle; Mäder, Paul; Hiltbrunner, Jürg; Mayer, Jochen; Dubois, David; Thommen, Andreas; Schweinzer, Agnes; Friedel, Juergen K.; David, Christophe.
A common handbook was conceived in the CORE Organic AGTEC-Org project in order to give some elements of field trial monitoring.
Tipo: Working paper Palavras-chave: Crop combinations and interactions Composting and manuring Soil tillage Soil Crop health; Quality; Protection Weed management.
Ano: 2008 URL: http://orgprints.org/16461/1/AGTEC_Agronomy_Handbook_of_Methods.pdf
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Auswirkungen reduzierter Hofdüngergaben im Bioackerbau Organic Eprints
Dubois, David; Mäder, Paul; Fliessbach, Andreas; Strasser, Fredi.
Im Biolandbau ist das Idealbild eines gemischt wirtschaftenden Betriebes mit Vieh und Pflanzenbau weit verbreitet. Aus wirtschaftlichen Zwängen wird der Trend zu viehschwachen oder gar viehlosen Biobetrieben immer wichtiger. Untersuchungen der FAL und des FiBL im DOK-Versuch zeigen, dass sich, wenn die Bewirtschaftung nicht angepasst wird, die Reduktion der Hofdüngergaben ungünstig auf Ertrag, Unkrautbesatz und Bodenfruchtbarkeit auswirkt.
Tipo: Journal paper Palavras-chave: Nutrient turnover; Weed management; Soil biology; Soil quality; Composting and manuring.
Ano: 2003 URL: http://orgprints.org/2726/1/dubois%2D2003%2Dreduzierte%2Dhofduengergaben.pdf
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Bio fördert Bodenfruchtbarkeit und Artenvielfalt - Erkenntnisse aus 21 Jahren DOK-Versuch Organic Eprints
Fliessbach, Andreas; Mäder, Paul; Pfiffner, Lukas; Dubois, David; Gunst, Lucie.
In leicht verständlicher Sprache fasst das Dossier die eindrücklichen Ergebnisse aus dem DOK-Langzeitversuch zusammen, in dem die biologisch-dynamische mit der organisch-biologischen und der konventionellen Anbaumethode verglichen werden. Ausgewertet und kommentiert werden die Erträge, Nährstoffzufuhr und -entzug, Bodenstruktur, Bodenleben und Artenvielfalt.
Tipo: Book Palavras-chave: Nutrient turnover; Soil biology; Biodiversity and ecosystem services; Soil quality.
Ano: 2000 URL: http://orgprints.org/2913/1/1089-dok.pdf
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Country Report on Organic Farming Research in Switzerland Organic Eprints
Alföldi, Thomas; Niggli, Urs; Willer, Helga; Fried, Padruot M.; Strasser, Freddie; Dubois, David; Baumann, Daniel; Kaufmann, Robert; Gallmann, Peter; Charles, Raphael.
The report presents the current (2005) status of organic farming resarch in Switzerland. Switzerland has a long history of organic farming research, which in its beginnings has been carried out by organic farming pioneers and by private institutions like the Goetheanum, Möschberg Centre and the Research Institute of Organic Agriculture (FiBL). It was in the 1990s, when Swiss Federal Agricultural Research Stations (Agroscope) became also involved in organic research topics. It can be estimated that currently approximately € 7.5 million per annum are allocated very specifically to organic farming research from public budgets. The National Research Programme is organised according to a four-year research concept of the Swiss Federal Office of...
Tipo: Book chapter Palavras-chave: Switzerland; Research communication and quality.
Ano: 2006 URL: http://orgprints.org/8758/1/alfoeldi%2Detal%2D2006%2Dswitzerland.pdf
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Der Wert des DOK‐Versuches unter den Aspekten moderner agrarwissenschaftlicher Forschung Organic Eprints
Mäder, Paul; Alföldi, Thomas; Niggli, Urs; Besson, Jean‐Marc; Dubois, David.
Der grosse Spardruck zwingt die Agrarforschungsinstitutionen weltweit, haushälterisch mit ihren Mitteln umzugehen. Die Forschungsschwerpunkte werden deshalb vor allem auf Themengebiete und Versuchsanstellungen gesetzt, in denen Resultate kurzfristig erwartet werden können und welche keine teuren Feldversuche benötigen. Ein Hauptziel moderner agrarwissenschaftlicher Forschung ist jedoch die Entwicklung nachhaltiger Produktionssysteme, die sich nur bedingt in kurzfristig angelegten Versuchen abklären lässt. Die Sicherung einer ausreichenden Nahrungsmittelerzeugung von hoher Qualität, ein haushälterischer Umgang mit nicht erneuerbaren Ressourcen (Düngemittel, Energie) sowie die Erhaltung der Bodenfruchtbarkeit und einer hohen Biodiversität sind wichtige...
Tipo: Journal paper Palavras-chave: Soil.
Ano: 1997 URL: http://orgprints.org/26779/1/Maeder_et_al_1997_AASS.pdf
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DOK - Versuch: Anbausystem-Effekte auf die Regenwürmer Organic Eprints
Jossi, Werner; Zihlmann, Urs; Dubois, David; Pfiffner, Lukas.
Im DOK-Versuch werden seit 1978 zwei biologische und zwei konventionelle Anbauverfahren sowie ein ungedüngtes Kontrollverfahren miteinander verglichen. Regenwurm-Erhebungen von 2001 bis 2005 haben gezeigt, dass sowohl bei der Biomasse wie bei der Anzahl Regenwürmer keine gesicherten Unterschiede zwischen den mit Mist und Gülle gedüngten Verfahren D2, O2 und K2 festzustellen sind. Dabei waren die Werte generell auf einem für Ackerböden hohen Niveau. Gegenüber früheren Erhebungen konnten mit dem Verzicht regenwurmtoxischer Pflanzenschutzmittel seit 1992 die Regenwürmer auch in den konventionellen Verfahren geschont und regeneriert werden. Das rein mineralisch gedüngte Verfahren M2 wies gegenüber den Hauptverfahren eine 13 % geringere Regenwurm-Biomasse auf,...
Tipo: Journal paper Palavras-chave: Biodiversity and ecosystem services; Crop husbandry.
Ano: 2007 URL: http://orgprints.org/13144/1/jossi%2Detal%2D2007%2Ddok_AF.pdf
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Einfluss der Bewirtschaftung auf die Nützlingsfauna Organic Eprints
Jossi, Werner; Bruderer, Ruth; Valenta, Anna; Schweizer, Christian; Scherrer, Caroline; Keller, Siegfried; Dubois, David.
Laufkäfer, Kurzflügler und Spinnen gehören zu den nützlichen Bewohnern der Feldfauna. Auf dem Betrieb Burgrain wurde in drei Anbausystemen integrierte Produktion (IP) intensiv, IP extensiv und biologisch von 1997 bis 2002 das Vorkommen dieser räuberischen Arthropoden mit Bodenfallen untersucht. Die Laufkäfer traten in den drei beprobten Kulturen Sommergerste, Winterweizen und Körnermais etwa gleich häufig auf. Bei biologischer Bewirtschaftung wurden in Sommergerste und Winterweizen gesichert höhere Aktivitätsdichten als bei den zwei IP-Anbausystemen festgestellt. Im Durchschnitt der drei Ackerkulturen wurden bei Bio 22 % und bei IPextensiv 8 % mehr Laufkäfer gefangen als bei IPintensiv. Es scheint, dass vor allem der höhere Unkrautbesatz bei Bio und...
Tipo: Journal paper Palavras-chave: Biodiversity and ecosystem services.
Ano: 2004 URL: http://orgprints.org/3819/1/Einfluss_Bewirtsch_auf_Nuetzlinge.pdf
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Erträge und Nährstoffgehalte von alten, biologisch und konventionell gezüchteten Winterweizensorten in verschiedenen landwirtschaftlichen Systemen Organic Eprints
Hildermann, Isabell; Thommen, Andreas; Dubois, David; Boller, Thomas; Wiemken, Andres; Mäder, Paul.
Due to limited nutrient conditions in organic farming winter wheat cultivars can often not perform to the full extent of their genetic potential. This study aims to assess nutrient acquisition potential and yields of old, organically and conventionally bred winter wheat cultivars. Ten cultivars were tested within the DOK long-term experiment in two organic systems at low and moderate intensity, a conventional stockless system and an unfertilized control. Yields and nutrient contents of grain and straw were significantly affected by cultivars and systems. Cultivar x system interactions were not detected. Yields were increasing with nutrient level and year of release of cultivars. Under organic conditions all cultivars performed equally well with...
Tipo: Conference paper, poster, etc. Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation.
Ano: 2009 URL: http://orgprints.org/14030/1/Hildermann_14030.pdf
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Fresh and residual phosphorus uptake by ryegrass from soils with different fertilization histories Organic Eprints
Oberson, Astrid; Tagmann, Hans U.; Langmeier, Monika; Dubois, David; Mäder, Paul; Frossard, Emmanuel.
Organic farming largely depends on animal manure as a source of phosphorus (P) and the recycling of animal manure globally is becoming increasingly important. In a pot experiment, using radioactive P labeling techniques, we studied ryegrass uptake of P applied with animal manure and water soluble mineral fertilizer to soils that had been cropped for 22 years according to organic or conventional farming practices. The soils differed in P status and microbial activity. Labeling soil-available P also allowed assessing the uptake from residual P that remained in the soils because of their different fertilization histories. On each soil, recovery of fresh manure P in four harvests of ryegrass shoots was lower than recovery of mineral P. It ranged from 24% to...
Tipo: Journal paper Palavras-chave: Nutrient turnover.
Ano: 2010 URL: http://orgprints.org/25683/1/Oberson%20et%20al%202010%20PlantSoil%20P%20fertilizers%20DOK%20soils.pdf
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How economic is organic? Results of a long-term trial at Burgrain/Lucerne, Switzerland Organic Eprints
Fried, Padruot M.; Zihlmann, Urs; Strasser, Fredi; Tschachtli, Ruedi; Ammann, Helmut; Dubois, David.
Long-term trials are necessary not only to judge agronomic and ecological indicators when studying organic farming, but also to analyze and describe economic parameters. From 1997-2002, an organic arable farming system (Bio) was compared with two Integrated farming systems (IP intensive and IP extensive) on 6 plots in a 6-year crop rotation at Burgrain near Lucerne, Switzerland. The 6 plots were subdivided into 3 subplots of 0.65 ha each. In the organic system, the input of fertilizer and pesticides was substantially reduced, which resulted in a yield reduction of 19% over all 4 arable crops and of 14% if the temporary lays are included. Nevertheless, the organic system showed an excellent net profit, mainly due to the higher prices paid to the farmers for...
Tipo: Conference paper, poster, etc. Palavras-chave: Specific methods.
Ano: 2005 URL: http://orgprints.org/4352/4/Fried_etal_4p_revised%2Ded.doc
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IP- und Bio-Produktion: Ökobilanzierung über eine Fruchtfolge Organic Eprints
Alföldi, Thomas; Schmid, Otto; Gaillard, Gérard; Dubois, David.
In den vergangenen Jahren wurde die Methode der Ökobilanzierung weiterentwickelt und an die Bedürfnisse der Landwirtschaft angepasst. Mit vergleichenden Ökobilanzen wurden bereits bisher die Umweltauswirkungen der biologischen und integrierten Anbauweise erfasst. Diese Arbeiten beschränken sich jedoch auf die Ebene der Einzelkultur. Im vorliegenden Beitrag stellen wir vergleichende Ökobilanzen über eine ganze Fruchtfolgeperiode vor, die wir im Rahmen eines langjährigen Vergleichsversuches (DOK-Versuch) durchführten. Unter diesen Bedingungen schnitt das organisch- biologische Verfahren ökologisch besser ab als das konventionelle/integrierte.
Tipo: Journal paper Palavras-chave: Crop combinations and interactions; Composting and manuring.
Ano: 1999 URL: http://orgprints.org/17842/1/alfoeldi%2Detal%2D1999%2Dagrarforschung.pdf
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L'agricoltura bio accresce la fertilità del suolo e la biodiversità Organic Eprints
Fliessbach, Andreas; Mäder, Paul; Pfiffner, Lukas; Dubois, David; Gunst, Lucie.
Risultati di 21 anni di ricerca DOK (Dossier No 1)
Tipo: Book Palavras-chave: Soil quality; Nutrient turnover; Soil tillage.
Ano: 2003 URL: http://orgprints.org/25233/1/1334-dok.pdf
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Le bio améliore la fertilité du sol et la biodiversité Organic Eprints
Fliessbach, Andreas; Mäder, Paul; Dubois, David; Pfiffner, Lukas; Gunst, Lucie.
Résultats de 21 ans d'essai DOC (Dossier N° 1) Dans un langage accessible au plus grand nombre, ce dossier présente les résultats marquants de 21 années d'essai DOC. Cette expérience de terrain offre une comparaison à long terme des méthodes de culture biodynamique (D), bio-organique (O) et conventionnelle (C). Font l'objet d'une mise en évidence et d'un commentaire, les rendements, les exportations et prélèvements d'éléments fertilisants, les effets sur la vie, la structure et la biodiversité du sol.
Tipo: Book Palavras-chave: Soil quality; Nutrient turnover; Soil tillage.
Ano: 2001 URL: http://orgprints.org/25234/1/1190-dok.pdf
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Life Cycle Assessment of Conventional and Organic Farming in the DOC trial Organic Eprints
Nemecek, Thomas; Dubois, David; Gunst, Lucie; Gaillard, Gérard.
The environmental impacts of the conventional and organic farming systems practised in the DOC trial (organic-dynamic, organic and conventional farming) have been assessed by the SALCA life cycle assessment method. Both organic farming systems were more favourable for the environment in all investigated impacts per area unit. When analysed per product unit, clear advantages of organic farming were found for ecotoxicity and the use of mineral resources, while energy use and eutrophication were similar to conventional farming. Reducing fertilisation by 50% led to lower or equal environmental impacts for all systems, depending on the impact category and the functional unit. The analysis of single crops revealed large differences that are partly...
Tipo: Conference paper, poster, etc. Palavras-chave: Specific methods.
Ano: 2005 URL: http://orgprints.org/4458/3/Nemecek_etal_4p_revised%2Ded.doc
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Long-term organic farming fosters below and aboveground biota: Implications for soil quality, biological control and productivity Organic Eprints
Birkhofer, Klaus; Bezemer, TM; Bloem, J; Bonkowski , M; Christensen, S.; Dubois, David; Ekelund , F; Fließbach, Andreas; Gunst, Lucie; Hedlund , K; Mäder, Paul; Mikola , J; Robin , C; Setälä, Heikki; Tatin-Froux , F; Van der Putten , WH; Scheu, Stefan.
Organic farming may contribute substantially to future agricultural production worldwide by improving soil quality and pest control, thereby reducing environmental impacts of conventional farming. We investigated in a comprehensive way soil chemical, as well as below and aboveground biological parameters of two organic and two conventional wheat farming systems that primarily differed in fertilization and weed management strategies. Contrast analyses identified management related differences between “herbicide-free” bioorganic (BIOORG) and biodynamic (BIODYN) systems and conventional systems with (CONFYM) or without manure (CONMIN) and herbicide application within a long-term agricultural experiment (DOK trial, Switzerland). Soil carbon content was...
Tipo: Journal paper Palavras-chave: Soil.
Ano: 2008 URL: http://orgprints.org/26205/1/Birkhofer_etal_2008_soil.pdf
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Micronutrient status in two long-term trials with fertilisation treatments and different cropping systems Organic Eprints
Fischer, Meike; Raupp, Joachim; Mäder, Paul; Dubois, David; Römheld, Volker.
Although organic fertilisers always contain micronutrients, we have to pay attention to the question of whether continuous fertilisation will lead to lower contents in plants or lower availability in the long run. We investigated topsoil samples from long-term trials with farmyard manure and mineral fertili-sation and with different organic and conventional farming systems. Input of micronutrients via or-ganic fertilisers was obviously more significant in the case of poor sandy soil than in that of loamy soil with high total contents and higher mineralising potential.
Tipo: Conference paper, poster, etc. Palavras-chave: Soil quality.
Ano: 2005 URL: http://orgprints.org/4341/1/Fischer_etal_4p_revised%2Ded.doc
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Nitrogen Budgets and Soil Nitrogen Stocks of Organic and Conventional Cropping Systems: Trade-Off between Efficiency and Sustainability of Nitrogen Use Organic Eprints
Oberson, Astrid; Jarosch, Klaus A.; Bosshard, Christine; Dubois, David; Frossard, Emmanuel; Hammelehle, Andreas; Mäder, Paul; Mayer, Jochen.
Organic and conventional cropping systems differ in the nature and amounts of nitrogen (N) inputs, which may affect efficiency and sustainability of N use. In the DOK (bio-Dynamic, bio-Organic, Konventionell) field experiment, organic and conventional cropping systems have been compared since 1978 at two fertilization levels. Nitrogen inputs via manure and/or mineral fertilizers, and N exports from plots with harvested products have throughout been recorded. For all treatments, N outputs with harvests have exceeded the inputs with fertilizers. Over the past years, symbiotic N2 fixation by soybean and clover grown in the trial has additionally been assessed, indicating average annual inputs of about 100 kg ha-1 yr-1 of N fixed from the atmosphere. Soil...
Tipo: Conference paper, poster, etc. Palavras-chave: "Organics" in general; Soil quality; Soil tillage.
Ano: 2018 URL: http://orgprints.org/34559/1/oberson-etal-2018ESA2018_FinalAbstractBook_p44.pdf
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Nitrogen fertilizer value of cattle manure applied on soils originating from organic and conventional farming systems Organic Eprints
Langmeier, Monika; Frossard, Emmanuel; Kreuzer, Michael; Mäder, Paul; Dubois, David; Oberson, Astrid.
Nitrogen nutrition of plants in organic farming depends largely on animal manure. In a pot experiment the hypothesis was tested that on a long-term organically managed soil (ORG) characterized by higher soil microbial activity, a greater portion of N applied as cattle manure is mineralized and taken up by plants than on a conventionally managed soil that had received exclusively mineral fertilizers (MIN). Dry matter yields and N uptake by Italian ryegrass were higher by around 20% on ORG than MIN soil. The N utilization of 15N labeled animal manure components and mineralNdiffered little between ORG and MIN. The major part of the increasedNuptake on ORG compared with MIN was due to a significantly greater N supply from ORG soil. The increased capacity of...
Tipo: Journal paper Palavras-chave: Composting and manuring; Soil.
Ano: 2002 URL: http://orgprints.org/26768/1/Langmeier_et_al_2002_A.pdf
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Nutrient use efficiency and arbuscular mycorrhizal root colonisation of winter wheat cultivars in different farming systems of the DOK long-term trial Organic Eprints
Hildermann, Isabell; Messmer, Monika; Dubois, David; Boller, Thomas; Wiemken, Andres; Mäder, Paul.
BACKGROUND: For organic farming, cultivars are required with high nutrient use efficiency under nutrient limited conditions. Arbuscular mycorrhizal fungi (AMF) are known to contribute to nutrient uptake under low input conditions. We compared nutrient use efficiency (NUE) of old and modern organically and conventionally bred cultivars in organic and conventional systems and assessed AMF-root colonisation (AMF-RC) in relation to nutrient concentrations. RESULTS: Cultivars and systems had a statistically significant effect on nitrogen (N) and phosphorus (P) concentrations and NUE parameters, whereas no genotype × environment interactions appeared. In contrast to N and P uptake, the NUE parameters were higher under organic than under conventional...
Tipo: Journal paper Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation Crop health; Quality; Protection.
Ano: 2010 URL: http://orgprints.org/17911/1/Hildermann-etal-2010-jsci-food-agric.pdf
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