|
|
|
| Registros recuperados: 14 | |
|
| |
|
|
| Keller, Martina; Oberson, Astrid; Frossard, Emmanuel; Mäder, Paul; Mayer, Jochen; Bünemann, Else K.. |
| The impact of cropping systems on soil phosphorus (P) forms and P dynamics was studied. The systems were a biodynamic (DYN), a bioorganic (BIO), a conventional (CON), a stockless system (MIN) and an unfertilized control (NON). These cropping systems are part of the DOK field trial in Therwil near Basel. The systems differed in fertilization and plant protection. The P budgets over 30 years were negative except for CON and increased in the order: NON < DYN < ORG < MIN < CON. A sequential P extraction scheme was used to characterize the P forms in soil samples from 2007 and 1977 (before the start of the trial). Labile inorganic P (Pi) forms differed significantly between cropping systems. Organic P forms (Po) and stable Pi forms were not... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Nutrient turnover; Soil; Composting and manuring. |
| Ano: 2009 |
URL: http://orgprints.org/14255/1/Keller_14255.pdf |
| |
|
|
| Ragot, Sabine A.; Kertesz, Michael A.; Mészáros, Éva; Frossard, Emmanuel; Bünemann, Else K.. |
| Alkaline phosphatases such as PhoD and PhoX are important in organic phosphorus cycling in soil. We identified the key organisms harboring the phoD and phoX genes in soil and explored the relationships between environmental factors and the phoD- and phoX-harboring community structures across three land uses located in arid to temperate climates on two continents using 454-sequencing. phoD was investigated using recently published primers, and new primers were designed to study phoX in soil. phoD was found in 1 archaeal, 13 bacterial and 2 fungal phyla, and phoX in 1 archaeal and 16 bacterial phyla. Dominant phoD-harboring phyla were Actinobacteria, Cyanobacteria, Deinococcus-Thermus, Firmicutes, Gemmatimonadetes, Planctomycetes and Proteobacteria, while... |
| Tipo: Journal paper |
Palavras-chave: Soil quality; Environmental aspects. |
| Ano: 2017 |
URL: http://orgprints.org/32317/1/ragot-etal-2017-FEMS-Vol93-Issue1-fiw212.pdf |
| |
|
|
| Bai, Zhanguo; Caspari, Thomas; Ruiperez Gonzalez, Maria; Batjes, Niels H.; Mäder, Paul; Bünemann, Else K.; de Goede, Ron; Brussaard, Lijbert; Xu, Minggang; Santos Ferreira, Carla Sofia. |
| In this paper we present effects of four paired agricultural management practices (organic matter (OM) addition versus no organic matter input, no-tillage (NT) versus conventional tillage, crop rotation versus monoculture, and organic agriculture versus conventional agriculture) on five key soil quality indicators, i.e., soil organic matter (SOM) content, pH, aggregate stability, earthworms (numbers) and crop yield. We have considered organic matter addition, no-tillage, crop rotation and organic agriculture as “promising practices”; no organic matter input, conventional tillage, monoculture and conventional farming were taken as the respective references or “standard practice” (baseline). Relative effects were analysed through indicator response ratio... |
| Tipo: Journal paper |
Palavras-chave: Soil quality; Crop husbandry; China; Europe. |
| Ano: 2018 |
URL: http://orgprints.org/33260/1/bai-etal-2018-AEE-agricultural_management_Vol265-p1-7.pdf |
| |
|
|
| Bongiorno, Giulia; Bünemann, Else K.; Oguejiofor, Chidinma U.; Meier, Jennifer; Gort, Gerrit; Comans, Rob; Mäder, Paul; Brussaard, Lijbert; de Goede, Ron. |
| Soil quality is defined as the capacity of the soil to perform multiple functions, and can be assessed by measuring soil chemical, physical and biological parameters. Among soil parameters, labile organic carbon is considered to have a primary role in many soil functions related to productivity and environmental resilience. Our study aimed at assessing the suitability of different labile carbon fractions, namely dissolved organic carbon (DOC), hydrophilic DOC (Hy-DOC), permanganate oxidizable carbon (POXC, also referred to as Active Carbon), hot water extractable carbon (HWEC) and particulate organic matter carbon (POMC) as soil quality indicators in agricultural systems. To do so, we tested their sensitivity to two agricultural management factors (tillage... |
| Tipo: Journal paper |
Palavras-chave: Soil quality; Soil tillage; Air and water emissions; Biodiversity and ecosystem services. |
| Ano: 2019 |
URL: http://orgprints.org/34684/1/bongiorno_etal_2019_EcologicalIndicators_Vol99_p38-50.pdf |
| |
|
|
| Norah, Efosa; Krause, Hans-Martin; Bünemann, Else K.; Hüppi, Roman; Häni, Christoph; Six, Johan. |
| Background Nitrogen (N) fertilizers are essential for crop production. Farmyard manure and slurry traditionally constitute about half of the total N inputs into crop production in Switzerland. Recycled fertilizers such as biogas slurry, liquid digestates and compost enable simultaneous energy production and closing of nutrient cycles. There is evidence that recycled fertilizers can help to increase N use efficiencies and to improve N supply in organic farming. Biochar amendment has shown a potential to mitigate soil greenhouse gas (GHG) emissions, in particular nitrous oxide (N2O) emissions. Here, we combine one of the liquid recycled fertilizer treatments with biochar. In a 2.5-years on-farm experiment, we quantify GHG emissions and further gaseous... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Air and water emissions; Soil. |
| Ano: 2018 |
URL: http://orgprints.org/33934/1/Poster_Climate_effects_NEfosa_2018.pdf |
| |
|
|
| Keller, Martina; Oberson, Astrid; Annaheim, Kathrin E.; Tamburini, Federica; Mäder, Paul; Mayer, Jochen; Frossard, Emmanuel; Bünemann, Else K.. |
| Lower P-input levels in organic than conventional farming can decrease soil total and available P, which can potentially be resupplied from soil organic P. We studied the effect of 30 y of conventional and organic farming on soil P forms, focussing especially on organic P. Soil samples (0–20 cm) were taken in a field experiment with a nonfertilized control, two organic systems receiving P inputs as animal manure, and two conventional systems receiving only mineral P or mineral P and manure. Soils were analyzed for total, inorganic, organic, and microbial P, by sequential P fractionation and by enzyme additions to alkaline soil extracts. Samples taken prior to starting the experiment were also analyzed. Average annual P balances ranged from –20 to +5 kg... |
| Tipo: Journal paper |
Palavras-chave: Soil quality; Crop husbandry. |
| Ano: 2012 |
URL: http://orgprints.org/21783/1/keller-etal-2012-JPlantNutrSoilSci-Vol175-p385-393.pdf |
| |
|
|
| Frick, Hanna; Oberson, Astrid; Frossard, Emmanuel; Wettstein, Hans-Rudolf; Bünemann, Else K.. |
| Background • Nitrate leaching threatens both the environment and drinking water quality • Switzerland ca. 380,000 ha with > 25 mg nitrate/L in groundwater (quality criteria for drinking water) [1]; the Gäu region (Canton Solothurn) is especially vulnerable • Organic fertilizers (slurry, farmyard manure, etc.) might entail considerably increased leaching risks due to variable nitrogen (N) content and availability • Aim: increase N use efficiency, simultaneously reduce leaching |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Composting and manuring; Air and water emissions. |
| Ano: 2018 |
URL: http://orgprints.org/34860/1/Poster_Hanna_A0_1806_light.pdf |
| |
|
|
| Möller, Kurt; Oberson, Astrid; Bünemann, Else K.; Cooper, Julia; Friedel, Jürgen K.; Glaesner, Nadia; Hörtenhuber, Stefan; Løes, Anne-Kristin; Mäder, Paul; Meyer, Gregor; Müller, Torsten; Symanczik, Sarah; Weissengruber, Lina; Wollmann, Iris; Magid, Jakob. |
| Phosphorus (P) is an essential element for all living organisms. At the current rate of extraction, global reserves of mineable deposits will be exhausted within the next few centuries. This publication aims to summarize the current knowledge on P recycling for organic farming. The evaluation of recycled P fertilizers (RPFs) includes (i) a chemical characterization, (ii) assessment of their plant P availability and added effects in the soil, (iii) life cycle assessments, (iv) a risk assessment of their long-term impacts on soil pollution, and (v) the compilation of other environmental impacts of different treatment approaches to produce RPFs. The highest nutrient recovery rates for P are achieved by rather simple process approaches of P recycling, while... |
| Tipo: Book chapter |
Palavras-chave: Composting and manuring; Nutrient turnover. |
| Ano: 2018 |
URL: http://orgprints.org/32661/1/Moeller-etal-2018-Advances_in_Agronomy-vol147-chapter4-p159-237-article-in-press.pdf |
| |
|
| |
|
|
| Welc, Monika; Bünemann, Else K.; Fließbach, Andreas; Frossard, Emmanuel; Jansa, Jan. |
| Microbial communities are important components of terrestrial ecosystems. The importance of their diversity and functions for natural systems is well recognized. However, a better understanding of successional changes of microbial communities over long time scales is still required. In this work, the size and composition of microbial communities in soils of a deglaciation chronosequence at the Damma glacier forefield were studied by fatty acid profiling. Soil fatty acid concentrations clearly increased with soil age. The abundances of arbuscular mycorrhizal fungi (AMF), bacteria and other soil fungi, however, were more affected by abiotic soil parameters like carbon content and pH than by soil age. Analysis of ratios of the different microbial groups (AMF,... |
| Tipo: Journal paper |
Palavras-chave: Soil quality. |
| Ano: 2012 |
URL: http://orgprints.org/21946/1/welc-etal-2012-SoilBioloBiochemistry-49-p184-192.pdf |
| |
|
|
| Løes, Anne-Kristin; Bünemann, Else K.; Cooper, Julia; Hörtenhuber, Stefan Josef; Magid, Jakob; Oberson, Astrid; Möller, Kurt. |
| Organic farming systems need to replace nutrients exported via farm products, especially phosphorus (P) which may otherwise become depleted in soil in the long term. In Europe, EU regulations for organic production are shaping the farming systems with respect to inputs of nutrients. Permitted off-farm P sources include conventional animal manure, composted or anaerobically digested organic residues, rock phosphate, and some animal residues such as meat and bone meal. The recent proposed revision of EU regulations for organic production (2014) puts less emphasis on closing nutrient cycles and instead aims at minimizing off-farm inputs, to reduce the risk of importing contaminants. This development, which has received little attention from the organic... |
| Tipo: Journal paper |
Palavras-chave: Composting and manuring; Quality and evaluation of inputs; Regulation. |
| Ano: 2016 |
URL: http://orgprints.org/30522/1/OA%20regulations%202016%20Loes%20et%20al%20printed.pdf |
| |
|
|
| Bünemann, Else K.; Bongiorno, Giulia; Bai, Zhanguo; Creamer, Rachel E.; de Deyn, Gerlinde; de Goede, Ron; Fleskens, Luuk; Geissen, Violette; Kuyper, Thom W.; Mäder, Paul; Pulleman, Mirjam; Sukkel, Wijnand; van Groeningen, Jan Willem; Brussaard, Lijbert. |
| Sampling and analysis or visual examination of soil to assess its status and use potential is widely practiced from plot to national scales. However, the choice of relevant soil attributes and interpretation of measurements are not straightforward, because of the complexity and site-specificity of soils, legacy effects of previous land use, and trade-offs between ecosystem services. Here we review soil quality and related concepts, in terms of definition, assessment approaches, and indicator selection and interpretation. We identify the most frequently used soil quality indicators under agricultural land use. We find that explicit evaluation of soil quality with respect to specific soil threats, soil functions and ecosystem services has rarely been... |
| Tipo: Journal paper |
Palavras-chave: Soil quality. |
| Ano: 2018 |
URL: http://orgprints.org/34774/1/buenemann_etal_2018_Soil_quality_review_SBB-Vol120-p105-125.pdf |
| |
|
|
| Musyoka, Martha W.; Adamtey, Noah; Bünemann, Else K.; Muriuki, Anne W.; Karanja, Edward N.; Mucheru-Muna, Monica; Fiaboe, Komi K.M.; Cadisch, Georg. |
| To match Nitrogen (N) supply to crop N demand, it is essential to understand N release and uptake patterns in different farming systems and crops. To assesses the dynamics of N released in organic and conventional systems and potential synchrony and asynchrony in crop N uptake, a study was conducted over three cropping seasons (potato, maize and leafy vegetables) at two sites in the Central Highlands of Kenya. Mineral-N release and synchrony were monitored in conventional and organic systems at high (recommended N, P, pesticides and irrigation) and low input (low N, P, pesticide use and rainfed) systems. Mineral-N release was assessed using in situ buried bags and N synchrony was measured by the daily differences in N fluxes. The percentage of N applied... |
| Tipo: Journal paper |
Palavras-chave: Soil quality; Composting and manuring; Africa. |
| Ano: 2019 |
|
| |
| Registros recuperados: 14 | |
|
|
|
