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10 Jahre differenzierte Grundbodenbearbeitung im Ökologischen Landbau - Methoden und Ergebnisse Organic Eprints
Hampl, Dr. Ulrich.
During 10 years a crop rotation schedule consisting of different crops was combined with three different tillage techniques. Effects of tillage on soil fertility parameters.
Tipo: Conference paper, poster, etc. Palavras-chave: Production systems; Soil quality; Soil tillage.
Ano: 2005 URL: http://orgprints.org/3767/1/3767.pdf
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10 Jahre differenzierte Grundbodenbearbeitung im Ökologischen Landbau - Untersuchungen zur Wurzeldynamik Organic Eprints
Plümer, Tanja.
During 10 years a crop rotation schedule consisting of different crops was combined with three different tillage techniques. Effects of tillage and crop rotation on plant roots are shown.
Tipo: Conference paper, poster, etc. Palavras-chave: Soil biology; Soil quality; Soil tillage.
Ano: 2005 URL: http://orgprints.org/3749/1/3749.pdf
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20 Jahre Modellbetrieb für Ökolandbau in Müncheberg. Teil 1: Entwicklung von Humus- und Nährstoffgehalten Organic Eprints
Bachinger, Johann; Bloch, Ralf; Reckling, Moritz; Stein-Bachinger, Karin.
Acht Felder der Versuchsstation des ZALF in Müncheberg in Nordostdeutschland wurden 1993 als Modellbetrieb mit einer Leguminosen-betonten Fruchtfolge auf Ökologischen Landbau umgestellt. Je Feld wurde 1995 ein Monitoringversuch mit je 5 Ernte- bzw. Beprobungsparzellen angelegt. Neben Ernteerhebungen erfolgte eine jährliche Krumenbeprobung zur Untersuchung der Entwicklung der Gehalte an organischem Kohlenstoff (Corg) und Stickstoff (Norg) sowie der P- und K-Verfügbarkeit. Eine deutliche Zunahme der Corg-Gehalte zeigte sich nur auf den Flächen mit Texturklasse Sand. Dagegen stiegen die Norg-Gehalte auch auf den besseren Böden, allerdings in geringerem Maße, an. Die P-Verfügbarkeit pegelte sich nach einem anfänglichen Rückgang auf Werte der Versorgungsstufe...
Tipo: Conference paper, poster, etc. Palavras-chave: Soil quality; Nutrient turnover; Soil.
Ano: 2015 URL: http://orgprints.org/27175/1/27175_bachinger.pdf
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A comparison of soil and water properties in organic and conventional farming systems in England Organic Eprints
Hathaway-Jenkins, L. J.; Sakrabani, R; Pearce, Bruce; Whitmore, A. P; Godwin, R. J..
Organic farming and improvements to agricultural sustainability are often seen as synonymous. However, an extensive European review demonstrated that in practice this is not always true. This study aims to compare the status of soil and water properties between separate fields managed in either an organic or a conventional manner. Soil samples were collected from 16 pairs of farms, throughout England, with both arable and grass fields within each pair on similar soil type. Chemical (nutrients, pesticides, herbicides) and physical (aggregate stability, field capacity, shear strength, soil organic matter, infiltration rates) soil properties were measured in four main soil texture classes in organic and conventional fields. The physical soil properties varied...
Tipo: Journal paper Palavras-chave: Soil quality.
Ano: 2011 URL: http://orgprints.org/18705/1/Hathaway_Jenkins_2011_SUM_paper.pdf
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A comparison of soil properties under organic and conventional farming in Australia Organic Eprints
Nachimuthu, Gunasekhar; Kristiansen, Paul; Lockwood, Peter; Guppy, Chris.
Organic farming is an alternative to conventional farming for providing sustainable crops with high export demand. This review analyses research findings on organic farming in Australia, with an emphasis on soil health. Several reports have indicated that organic farm management generally improves soil physical properties in Australia and elsewhere. Although low nitrogen (N) availability can constrain yields, organic farmers can improve N supply through legume green manures. Plant available phosphorus (P) is a more serious limiting factor in organic farming, particularly in Australia with naturally low P levels. Phosphorus is less easily replaced in the soil than N, and there is a need for alternate sources of organic-certified P and methods to enhance P...
Tipo: Conference paper, poster, etc. Palavras-chave: Soil quality.
Ano: 2005 URL: http://orgprints.org/4362/4/Nachimuthu_etal_4p_revised%2Ded.doc
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A Conceptual Framework for Soil management and its effect on Soil Biodiversity in Organic and Low Input Farming Organic Eprints
Koopmans, Dr. C.J.; Smeding, Dr. F.W..
Learning how to manage beneficial soil biological processes may be a key step towards developing sustainable agricultural systems. We designed a conceptual framework linking soil management practices to important soil-life groups and soil fertility services like nutrient cycling, soil structure and disease suppression. We selected a necessary parameter set to gain insight between management, soil life and soil support services. The findings help to develop management practices that optimise yields, soil fertility and biodiversity in organic farming.
Tipo: Conference paper, poster, etc. Palavras-chave: Soil biology; Soil quality.
Ano: 2008 URL: http://orgprints.org/11619/1/Koopmans_11619_ed.doc
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A importância das áreas ripárias para a sustentabilidade hidrológica do uso da terra em microbacias hidrográficas. Organic Eprints
Attanasio, Cláudia Mira; Gandolfi, Sergius; Zakia, Maria José B.; Veniziani Junior, José Carlos Toledo; Lima, Walter de Paula.
Zonas ripárias são áreas de saturação hídrica, permanente ou temporária, cuja principal função é a proteção dos recursos hídricos de uma microbacia. Essa pesquisa comparou a adequação do uso do solo de dois cenários de planejamento agrícola de uma microbacia: o cenário convencional, representando o método usualmente empregado, que apenas considera as classes de capacidade de uso da terra, e o cenário hidrológico, que inclui a delimitação e avaliação das zonas ripárias. Um estudo de caso foi realizado na Microbacia do Ribeirão São João (3.656 ha), no município de Mineiros do Tietê (São Paulo, Brasil). Mapas de Classe de Capacidade de Uso da Terra e de Adequação do Uso do Solo foram elaborados, utilizando o Sistema de Informação Geográfica (SIG), para a...
Tipo: Journal paper Palavras-chave: Soil quality; Soil biology; Crop husbandry; Soil tillage; Soil; Landscape and recreation; Environmental aspects.
Ano: 2012 URL: http://orgprints.org/29043/1/Attanasio_A%20importancia.pdf
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A long-term field experiment demonstrates the influence of tillage on the bacterial potential to produce soil structure-stabilizing agents such as exopolysaccharides and lipopolysaccharides Organic Eprints
Cania, Barbara; Vestergaard, Gisle; Krauss, Maike; Fliessbach, Andreas; Schloter, Michael; Schulz, Stefanie.
Background: Stable soil aggregates are essential for optimal crop growth and preventing soil erosion. However, tillage is often used in agriculture to loosen the soil, which disrupts the integrity of these aggregates. Soil aggregation can be enhanced by bacteria through their ability to produce exopolysaccharides and lipopolysaccharides. These compounds stabilize soil aggregates by “gluing” soil particles together. However, it has yet to be shown how tillage influences the bacterial potential to produce aggregate-stabilizing agents. Therefore, we sampled conventional and reduced tillage treatments at 0–10 cm, 10–20 cm and 20–50 cm from a long-term field trial in Frick, Switzerland. We compared the stable aggregate fraction of the soil and the bacterial...
Tipo: Journal paper Palavras-chave: Soil quality; Soil biology; Biodiversity and ecosystem services.
Ano: 2019 URL: http://orgprints.org/35214/1/Cania_EnvMic_2019.pdf
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A method for soil health assessment in the conversion to organic farming Organic Eprints
Mata, Macarena; Garrido, Marisol; Longhurst, Phil; Seaton, Roger.
This paper was presented at the UK Organic Research 2002 Conference of the Colloquium of Organic Researchers (COR). The regulation for the assessment of the conversion to organic farming establishes the use of soil/produce pollution and the type of agricultural practices as indicators of performance. However, these indicators don’t reflect the complexity of the soil ecosystem and soil health. Therefore, complementary indicators were sought (soil biostructure and field capacity), and a specific three-steps method for the assessment and monitoring of soil health during the conversion process was developed.
Tipo: Conference paper, poster, etc. Palavras-chave: Soil biology; Technology transfer; Biodiversity and ecosystem services; Soil quality.
Ano: 2002 URL: http://orgprints.org/8236/1/mata_soil_health_assessment_conversion.pdf
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A model analysis on nitrate leaching under different soil and climate conditions and use of catch crops Organic Eprints
Pedersen, Anders; Stoumann Jensen, Lars; Thorup-Kristensen, Kristian.
The use of crops and catch crops with deep rooting can strongly improve the possibility of retaining nitrate-N that will otherwise be leached to the deeper soil layers and end up in the surrounding environment. But will it always be an advantage for the farmer to grow a catch crop? This will depend on factors such as soil mineral nitrogen level, soil water holding capacity, winter precipitation, rooting depth and N demand of the scceeding crop. These factors interact, and it can be very difficult for farmers or advisors to use this information to decide whether growing a catch crop will be beneficial. To analyse the effect of catch crops under different Danish soil and precipitation conditions, we used the soil, plant and atmosphere model Daisy.
Tipo: Conference paper, poster, etc. Palavras-chave: Nutrient turnover; Post harvest management and techniques; Crop combinations and interactions; Farm nutrient management; Soil quality.
Ano: 2005 URL: http://orgprints.org/7831/1/7831.pdf
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A New Approach to Humus Balancing in Organic Farming Organic Eprints
Brock, Christopher; Hoyer, Uta; Leithold, Günther; Hülsbergen, Kurt-Jürgen.
Humus balances provide a profitable approach for humus dynamics assessment in farming practice. Nevertheless, there is a clear demand for methodological adaptation. This article presents a new approach to humus balancing using reproducible algorithms for the estimation of balance coefficients. Humus balance coefficients for crops and organic fertilizers are estimated according to a bipartite algorithm. Humus demand is calculated on the basis of crop yields referring to the nitrogen household in the plant-soil system. Humus supply is derived from organic matter input with plant material and fertilizers. The new approach facilitates the adaptation of the method to new situations.
Tipo: Conference paper, poster, etc. Palavras-chave: Soil quality.
Ano: 2008 URL: http://orgprints.org/12077/1/Brock_12077_ed.doc
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A new approach to soil tillage for organic vegetable production: permanent beds Organic Eprints
Vedie, Hélène; Berry, Dominique; Leclerc, Blaise; Grébert, David; Lhôte, Jean-Michel.
The effect of controlled traffic with permanent crop beds was compared to mouldboard ploughing in France for organic vegetable production. Four trials were carried out over a period of three to seven years at four sites with different pedo-climatic conditions. Variable results were obtained, depending on soil type (susceptibility to compaction), tillage machinery type, vegetable type (root or not, grown from seed or transplant) and weed development. However, permanent crop beds with controlled traffic generally improved biological activity and reduced labour demand.
Tipo: Conference paper, poster, etc. Palavras-chave: Soil quality.
Ano: 2008 URL: http://orgprints.org/11824/1/Vedie_11824_ed.rtf
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A note on sewage sludge - risk assessments and fertilization value Organic Eprints
Magid, Jakob.
A number of recent studies of risk related to agricultural use of sewage sludge are reviewed, as a contribution to the discussion of potential for use in organic agriculture. Furthermore a very tentative assessment of the fertilization value of sewage sludge and its derived products is developed.
Tipo: Working paper Palavras-chave: Soil quality; Soil; Environmental aspects.
Ano: 2013 URL: http://orgprints.org/22629/1/22629.pdf
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A PRACTICE APPLICABLE MODEL FOR THE ASSESSMENT OF MANAGEMENT IMPACT ON ORGANIC MATTER IN ARABLE SOILS Organic Eprints
Brock, Christopher; Leithold, Günter.
We present the HU-MOD-2 model for the assessment of management impact on organic matter levels in arable soils. The model aims at optimal applicability as a management support tool in framing practice and therefore requires only easily available input data. In validation, the tool proved to be capable of giving a rough estimate on soil organic matter changes in arable soils. Taking into account the low demand for input data, the modeling error seems tolerable for a practice applicable decision support tool.
Tipo: Conference paper, poster, etc. Palavras-chave: Soil quality; Crop husbandry; Environmental aspects.
Ano: 2014 URL: http://orgprints.org/23956/1/23956_brock_leithold_owc14_MM.pdf
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A review of farm-scale nutrient budgets for organic farms as a tool for management of soil fertility Organic Eprints
Watson, C.A.; Bengtsson, H.; Ebbesvik, M.; Loes, A-K.; Myrbeck, A.; Salomon, E.; Schroder, J.; Stockdale, E.A..
On organic farms, where the importation of materials to build/maintain soil fertility is restricted, it is important that a balance between inputs and outputs of nutrients is achieved to ensure both short-term productivity and long-term sustainability. This paper considers different approaches to nutrient budgeting on organic farms and evaluates the sources of bias in the measurements and/or estimates of the nutrient inputs and outputs. The paper collates 88 nutrient budgets compiled at the farm scale in 9 temperate countries. All the nitrogen (N) budgets showed an N surplus (average 83.2 kg N ha-1 year-1). The efficiency of N use, defined as outputs/inputs, was highest (0.9) and lowest (0.2) in arable and beef systems respectively. The phosphorus (P) and...
Tipo: Journal paper Palavras-chave: Nutrient turnover; Soil quality.
Ano: 2002 URL: http://orgprints.org/8061/2/Watson_orgrpints_8061.pdf
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A utilização do carvão vegetal como condicionador de solos. Repositório Alice
PAZ, E. J. de J. da; SOUZA, L. D..
A terra preta do Índio (TPI) surgiu a partir de ações antrópicas. Evidências provam que esses solos foram formados por antigas comunidades indígenas amazônicas, que habitavam áreas densamente povoadas. O hábito de queimar resíduos orgânicos em fogo lento, combustão em alta temperatura na ausência ou presença de pequeno volume de oxigênio (pirólise), pode reter até 80% do carbono presente no material orgânico ao se transformar em carvão. A adição de carvão ao solo, em partículas no tamanho das frações de areia, silte e argila, pode alterar os limites de consistência, melhorar a capacidade de retenção de água, elevar o pH e contribuir para melhorar a estrutura do solo. O objetivo deste trabalho foi avaliar o potencial de utilização do carvão como...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Solo; Soil water retention; Soil quality.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/966059
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Åbent Hus: Forbedret udnyttelse af jord og ressourcer i økologiske dyrkningssystemer Organic Eprints
Kristensen, Helene.
Projektet SoilVeg handler om forbedret udnyttelse af jord og ressourcer i økologiske dyrkningssystemer for grøntsager med grønafgrøder. Der afprøves dyrkning af hvidkål i to nye dyrkningssystemer med reduceret jordbearbejdning. I det ene system plantes direkte ned i en tromlet vintergrønafgrøde uden anden jordbearbejdning, og her er det tanken at den tromlede biomasse dækker jorden og dermed holder ukrudt nede i løbet af sæsonen. I det andet system laves stribenedmuldning af grønafgrøden før plantning. De to nye systemer sammenlignes med almindelig nedmuldning og ingen forudgående grønafgrøde. Både vinterhestebønne, vinterært og vintervikke er blevet brugt som grønafgrøder og i blandinger med vinterrug. Disse forsøg kører ved Forskningscenter Årslev i 2016...
Tipo: Web product Palavras-chave: Soil quality; Crop combinations and interactions; Soil tillage; Air and water emissions; Vegetables; Biodiversity and ecosystem services; Weed management.
Ano: 2016 URL: http://orgprints.org/32030/1/index.html
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Above- and belowground nitrogen distribution of a red clover-perennial ryegrass sward along a soil nutrient availability gradient established by organic and conventional cropping systems Organic Eprints
Hammelehle, Andreas; Oberson, Astrid; Lüscher, Andreas; Mäder, Paul; Mayer, Jochen.
Aims Belowground legume nitrogen (N) composed of roots and rhizodeposition is an important N input to soils, but published data of belowground N vary broadly, probably due to extrapolation from short-term experiments and dissimilar growing conditions. We quantified belowground N inputs of red clover (Trifolium pratense L.) during two consecutive years in a clover-grass sward along a soil nutrient availability gradient. Methods We established a red clover-perennial ryegrass (Lolium perenne L.) model sward in microplots located in field plots of the DOK experiment, which has a 33-year history of organic and conventional cropping, resulting in a soil nutrient availability gradient. Four treatments were examined: the zero fertilisation control, bio-organic...
Tipo: Journal paper Palavras-chave: Soil quality; Composting and manuring.
Ano: 2018 URL: http://orgprints.org/34924/1/hammelehle-etal-2018-PlantSoil-Vol425-Issue1-2-p507-525.pdf
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Abschätzung des Risikos einer Schwermetall-Akkumulation in Böden durch längerfristige Anwendung von Recycling- Phosphor-Düngemitteln Organic Eprints
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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Absorção de nutrientes e alterações químicas em Latossolos cultivados com plantas de cobertura em rotação com soja e milho. Organic Eprints
Borges, Wander Luis Barbosa; Freitas, Rogério Soares de; Mateus, Gustavo Pavan; Sá, Marco Eustáquio de; Alves, Marlene Cristina.
Os efeitos promovidos pelas plantas de cobertura nos atributos químicos do solo são bastante variáveis, dependendo de fatores como espécie utilizada, manejo dado à biomassa, época de plantio e corte das plantas, tempo de permanência dos resíduos no solo, condições locais e interação entre esses fatores. Este trabalho foi realizado com o objetivo de avaliar a absorção de nutrientes por cinco plantas de cobertura, que foram utilizadas para produção de grãos, sementes e forragem, em diferentes quantidades de sementes por hectare e pela vegetação espontânea, bem como para o efeito sobre as propriedades químicas de dois Latossolos, cultivadas em rotação com as culturas da soja e do milho. Os experimentos foram instalados em Votuporanga, SP, e Selvíria, MS, em...
Tipo: Journal paper Palavras-chave: Production systems; Soil quality; Crop combinations and interactions; Farming Systems; Crop husbandry; Soil tillage; Soil.
Ano: 2014 URL: http://orgprints.org/29096/1/Borges_Abssor%C3%A7%C3%A3o.pdf
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