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| Registros recuperados: 12 | |
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| Fliessbach, Andreas; Oberholzer, Hans-Rudolf; Gunst, Lucie; Paul, Mäder. |
| Organic farming systems often comprise crops and livestock, recycle farmyard manure for fertilization, and preventive or biocontrol measures are used for plant protection. We determined indicators for soil quality changes in the DOK long-term comparison trial that was initiated in 1978. This replicated field trial comprises organic and integrated (conventional) farming systems that are typical for Swiss agriculture. Livestock based bio-organic (BIOORG), bio-dynamic (BIODYN) and integrated farming systems (CONFYM) were compared at reduced and normal fertilization intensity (0.7 and 1.4 livestock units, LU) in a 7 year crop rotation. A stockless integrated system is fertilized with mineral fertilizers exclusively (CONMIN) and one control treatment remained... |
| Tipo: Journal paper |
Palavras-chave: Biodiversity and ecosystem services; Soil quality. |
| Ano: 2007 |
URL: http://orgprints.org/10627/1/Fliessbach_AGEE_2007_AF1949.pdf |
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| Oberholzer, Hans-Rudolf; Fließbach, Andreas; Mäder, Paul; Mayer, Jochen. |
| Im DOK-Feldversuch in Therwil, Schweiz werden seit 1978 folgende landwirtschaftlichen Anbausysteme verglichen: Konventionell (CONFYM, mineralische und organische Düngung, synthetische Pflanzenschutzmittel), biologisch organisch (BIOORG, organische Düngung, mechanische Unkrautbekämpfung und biologische Krankheits- und Schädlingsbekämpfung) sowie biologisch-dynamisch (BIODYN, organische Düngung mit kompostiertem Mist, Pflanzenschutz wie BIOORG,aber ohne Cu, biologisch-dynamische Präparate). |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil quality; Composting and manuring; Weed management. |
| Ano: 2009 |
URL: http://orgprints.org/26502/1/Oberholzer_Fliessbach_etal_2009_VDLUFA.pdf |
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| Fliessbach, Andreas; Winkler, Manuel; Lutz, Matthias P.; Oberholzer, Hans-Rudolf; Mäder, Paul. |
| Pseudomonas fluorescens strains are used in agriculture as plant growth-promoting rhizobacteria (PGPR). Nontarget effects of released organisms should be analyzed prior to their large-scale use, and methods should be available to sensitively detect possible changes in the environments the organism is released to. According to ecological theory, microbial communities with a greater diversity should be less susceptible to disturbance by invading organisms. Based on this principle, we laid out a pot experiment with field-derived soils different in their microbial biomass and activity due to long-term management on similar parent geological material (loess). We investigated the survival of P. fluorescens CHA0 that carried a resistance toward rifampicin and the... |
| Tipo: Journal paper |
Palavras-chave: Soil biology. |
| Ano: 2009 |
URL: http://orgprints.org/18190/1/fliessbach%2Detal%2D2009%2Dmicrob%2Decol.pdf |
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| Brock, Christopher; Fließbach, Andreas; Oberholzer, Hans-Rudolf; Schulz, Franz; Wiesinger, Klaus; Reinicke, Frank; Koch, Wernfried; Pallutt, Bernhard; Dittman, Bärbel; Zimmer, Jörg; Hülsbergen, Kurt-Jürgen; Leithold, Günter. |
| The aim of this study was to evaluate the interaction between yield levels of nonleguminous crops and soil organic matter (SOM) under the specific conditions of organic and conventional farming, respectively, and to identify implications for SOM management in arable farming considering the farming system (organic vs. conventional). For that purpose, correlations between yield levels of nonlegume crops and actual SOM level (Corg, Nt, Chwe, Nhwe) as well as SOM-level development were examined including primary data from selected treatments of seven long-term field experiments in Germany and Switzerland. Yield levels of nonlegume crops were positively correlated with SOM levels, but the correlation was significant only under conditions of organic farming, and... |
| Tipo: Journal paper |
Palavras-chave: Soil quality; Crop husbandry. |
| Ano: 2011 |
URL: http://orgprints.org/21782/1/brock-etal-2011-JPlantNutrSoilSci-Vol174-p568-575.pdf |
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| Mayer, Jochen; Scheid, Susanne; Widmer, Franco; Fließbach, Andreas; Oberholzer, Hans-Rudolf. |
| Effective microorganisms® (EM) is a microbial inoculant promoted to stimulate plant growth and soil fertility in agriculture. In our study we investigated the effects of EM on crop yields and soil microbial parameters in a 4-year field experiment under organic management (2003–2006) in Zurich, Switzerland. Treatments of the EM preparations (i) the spraying agent EMA, (ii) EMA with the EM enriched organic substrate Bokashi and (iii) EMA with Bokashi and farmyard manure were applied in each year. As controls to treatments (i)–(iii) the same treatments were included with sterilised EM preparations and a control without EM application. Crop yields in each year and the soil microbiological parameters soil respiration, microbial biomass (SIR, CFE), dehydrogenase... |
| Tipo: Journal paper |
Palavras-chave: Soil biology. |
| Ano: 2010 |
URL: http://orgprints.org/17863/1/Mayer%2Detal%2D2010see%2Dfront%2Dmatter.pdf |
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| Oberholzer, Hans-Rudolf; Fließbach, Andreas; Mäder, Paul; Mayer, Jochen. |
| In the long-term DOK field trial at Therwil, Switzerland, agricultural farming systems are compared since 1978: CONFYM (mineral and organic fertilisers, synthetic pesticides), BIOORG (organic fertilisers, mechanical weeding and biological disease and pest control) and BIODYN (with composted manure and bio-dynamic preparations), all of them at two fertiliser intensities of 0.7 and 1.4 livestock units per ha, respectively. They are compared with CONMIN (conventionally managed, exclusively minerally fertilised) and NOFERT (unfertilised control). CONFYM and CONMIN were limed with 2.7 t CaCO3 ha-1 in 1999, CONMIN with additional 2 t CaCO3 ha-1 in 2005, since pH values had dropped below officially recommended values. In spring of 1998 and 2006 soil... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil biology; Soil quality. |
| Ano: 2009 |
URL: http://orgprints.org/14512/1/Oberholzer_14512.pdf |
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| Oberholzer, Hans-Rudolf; Zihlmann, Urs. |
| In a large scale field experiment near Lucerne (Switzerland) the effect of integrated and organic farming systems on soil microbial parameters was investigated. Three farming systems, IP intensive, IP extensive and organic farming (“Bio”) were com-pared on six plots during 18 years. The six year crop rotation with two years of ley (grass-clover mixture) was identical for all treatments, as was soil tillage, except that tillage in IP extensive was switched to non-inversion tillage starting in 2003. Soil sam-ples from 0 to 20 cm depth were taken in spring, between 1993 to 1996 every year and after 1998 every second year. The samples were analysed for soil microbial biomass (substrate induced respiration SIR and since 2002 chloroform fumigation extraction... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Farming Systems; Soil biology. |
| Ano: 2011 |
URL: http://orgprints.org/17581/3/Oberholzer_17581.pdf |
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| Hartmann, Martin; Fliessbach, Andreas; Oberholzer, Hans-Rudolf; Widmer, Franco. |
| Biological soil characteristics such as microbial biomass, community structures, activities, and functions may provide important information on environmental and anthropogenic influences on agricultural soils. Diagnostic tools and detailed statistical approaches need to be developed for a reliable evaluation of these parameters, in order to allow classification and quantification of the magnitude of such effects. The DOK long-term agricultural field experiment was initiated in 1978 in Switzerland for the evaluation of organic and conventional farming practices. It includes three representative Swiss farming systems with biodynamic, bio-organic and conventional fertilization and plant protection schemes along with minerally fertilized and unfertilized... |
| Tipo: Journal paper |
Palavras-chave: Soil biology; Soil quality. |
| Ano: 2006 |
URL: http://orgprints.org/9083/1/fliessbach%2Detal%2D2005%2DFEMSEC_132.pdf |
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| Mayer, Jochen; Scheid, Susanne; Oberholzer, Hans-Rudolf. |
| The effectiveness of ‘Effective Microorganisms’ (EM) was investigated in a four years field experiment (2003-2006) at Zurich, Switzerland. The experiment was designed to enable clear differentiation between effects of the microorganisms in the EM treatments (Bokashi and EMA) and its substrate (sterilized treatments). Crop yields and soil microbiological parameters as soil respiration and microbial biomass were determined. The EM treatments showed no effect on yield and soil microorganisms which were caused by the EM microorganisms. Observed effects could be related to the effect of the carrier substrate of the EM products. The sampling time showed stronger effects on soil microbial biomass and soil respiration compared to the effect of the treatments.... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Farm nutrient management. |
| Ano: 2008 |
URL: http://orgprints.org/14838/1/Mayer_14838_ed.doc |
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| Bender, Franz; Conen, Franz; Neftel, Albrecht; Oberholzer, Hans-Rudolf; Olbrecht, Luise; Jocher, Markus; Rollog, Mark; van der Heijden, Marcel G.A. |
| To increase nutrient use efficiency and reduce nutrient losses are key aspects for sustainable agriculture. Arbuscular mycorrhizal fungi (AMF) are an import and widespread group of plant-symbiotic soil fungi. Here we investigate the role of those soil microorganisms, for effective nutrient recycling. We conducted greenhouse and lysimeter experiments to compare the cycling of important plant nutrients in systems with high and low abundance of AMF. AMF increased plant N nutrition, reduced leaching losses of mineral N, and prevented emissions of N2O, an important greenhouse gas. The results show the importance of AMF for an effective nutrient management. Farmers should implement strategies to promote AMF in the soil, as they are an indispensable compound of... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil biology; Nutrient turnover; Air and water emissions. |
| Ano: 2013 |
URL: http://orgprints.org/21514/1/21514_Bender.pdf |
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| Zihlmann, Urs; Tschachtli, Ruedi; Oberholzer, Hans-Rudolf; van der Heijden, Marcel; Oehl, Fritz. |
| The effect of integrated and organic farming on crop yield as well as on environmental and economic performance was investigated in a large scale field experiment near Lucerne (Switzerland), which was running for 18 years. Crop yield in organically managed fields was, depending on crop species, between 3% and 36% lower compared to conventionally managed fields. Only slight variations in crop quality were observed between the farming systems, probably as a result of the high nitrogen mineralization potential of the soils in this experiment. Our results show that organic farming on fertile soils provides good yields and is – under the given Swiss agricultural policy – economically beneficial. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop husbandry. |
| Ano: 2011 |
URL: http://orgprints.org/17594/3/Oehl_17594.pdf |
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| Registros recuperados: 12 | |
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