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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 comparative study of nitrate leaching from intensively managed monoculture grass and grass-clover pastures Organic Eprints
P.S., Hooda; M., Moynagh; I.F., Svoboda; H.A., Anderson.
Nitrate leaching losses from intensively managed monoculture grass and grass-clover pastures were measured during 1994-96 at a long-term experimental farm in south-west Scotland. Field-size lysimeter plots were established in 1993 on the existing pastures on a silty clay loam non-calcareous gley. No fertilizer-N was applied to the grass-clover, while the monoculture grass was fertilized with c.240 kg N ha-1 year-1, but both swards received 2-3 cattle slurry applications annually (120-390 kg total N ha-1 year-1). The pastures supported 2-3 cuts for silage conservation, and were grazed by dairy cattle and stocked with sheep during the winter months. Initially, leachate nitrate concentrations from the fertilized grass were considerably larger than those...
Tipo: Journal paper Palavras-chave: Nutrient turnover; Farm nutrient management.
Ano: 1998 URL: http://orgprints.org/6175/1/Younie2002Effect.pdf
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A comparison of soil quality and yield parameters under organic and conventional vineyard systems in Mediterranean conditions (West Turkey) Organic Eprints
OKUR, Nur; KAYIKÇIOĞLU, Hüsnü; ATEŞ, Fadime; YAĞMUR, Bülent.
Soil chemical and microbial parameters are commonly used as soil quality indicators to evaluate sustainable land management in agroecosystems. The objective of this research was to evaluate the impact of organic and conventional management strategies on biological,chemicalandyieldparametersinvineyards(Vitisviniferacv.Sultaniseedless). Organic plots received a mixture of barley, vetch and broad bean (25þ35 þ75kg seed ha21) as green manure, and farmyard manure (15t ha21) every year. Inorganic fertilizers (NPK)andpesticideswereusedintheconventionalmanagedvineyards.Conventionaland mulch tillage methods were used in conventional and organic plots, respectively. Microbiological and chemical soil properties were determined in the soil samples which...
Tipo: Journal paper Palavras-chave: "Organics" in general; Nutrient turnover; Farm nutrient management.
Ano: 2015 URL: http://orgprints.org/31092/1/NUR%20OKUR-ORTAK%20MAMAKLE.pdf
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A discussion of norms for S supply in organic farming based on content in forage and ruminant performance in Norway Organic Eprints
Hansen, Sissel; Bakken, Anne Kjersti.
The content of sulphur (S) in grassland on 27 Norwegian organic farms with dairy or sheep production was investigated in 2001 and 2002. The forage content of S was below the norms (2 g S kg DM-1) for both plants and animals in a large proportion of the samples. The average S content in forage at dairy farms was 1.4 g S kg DM-1 and at sheep farms 1.5 g. Even on grasslands with low plant S content (<1 g S kg DM-1), S-fertilization did not increase yields and increased the plants’ S content only very slightly. No indications of S deficiency were observed on the dairy farms. For one sheep farm with a forage S content of 1.1 ± 0.1g S kg DM-1, brittle and short winter wool was reported.
Tipo: Conference paper, poster, etc. Palavras-chave: Nutrient turnover; Pasture and forage crops; Feeding and growth.
Ano: 2008 URL: http://orgprints.org/11946/1/11946.pdf
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A flexible tool for simulation of soil carbon turnover Organic Eprints
Petersen, B.M.; Olesen, J.E.; Heidmann, T..
Existing models of soil organic matter (SOM) turnover are implemented within rigid and often complex modelling environments, which makes the testing of influence of SOM model structure a rather difficult task. A new soil carbon turnover simulation tool is presented (C-TOOL v. 1.0). It facilitates the construction of a wide range of user-definable SOM models based on linked SOM pools and a decay described for each pool by first order kinetics. Simulation of carbon isotopes 13C and 14C is facilitated. No programming is necessary for defining or redefining models, as the model structure is given in set-up files. The program is fast, and can utilise a range of time-steps, which enhances the computation of steady level SOM contents. The ability of C-TOOL to...
Tipo: Journal paper Palavras-chave: Nutrient turnover.
Ano: 2002 URL: http://orgprints.org/85/1/85.doc
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A Guide to Nutrient Budgeting on Organic Farms Organic Eprints
Watson, Christine; Topp, Cairistiona F E; Stockdale, Elizabeth.
The leaflet gives practical guidance on using data and calculating farm-gate nutrient budgets with sections on soil analysis, nutrient inputs, nutrient losses and flows, nitrogen fixation through leys and how inputs and outputs from organic manures and livestock feed can be recorded. It contains one example table of a farm-gate annual nutrient budget for a mixed cattle and arable farm. The tool is specific to organic farming. It was drafted for the UK but has relevance in other countries.
Tipo: Practice tool Palavras-chave: Nutrient turnover; Farm nutrient management.
Ano: 2010 URL: http://orgprints.org/31654/1/a-guide-to-nutrient-budgeting-on-farms.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 rainfall simulation study on the relationships between soil test P versus dissolved and potentially bioavailable particulate phosphorus forms in runoff Organic Eprints
Uusitalo, Risto; Aura, Erkki.
Runoff from clayey soils often contains abundant particulate phoshorus (PP), part of which may solubilize in surface waters. Monitoring losses of potentially bioavailable forms of PP is expensive, calling for other ways to predict them. Such predictions could be based on soil loss and available soil P indices, e.g., agronomic P status. To study correlations between P pools in runoff versus soil P saturation (by Mehlich 3 extraction; DPSM3) and acetate soil test P (PAc), 15 clayey soils of south Finland were subjected to laboratory rainfall simulation. Runoff from these simulations was analyzed for concentrations of suspended soil (TSS), dissolved molybdate-reactive P (DRP), total P (TP), and, as normalized to soil loss, potentially bioavailable forms of...
Tipo: Journal paper Palavras-chave: Nutrient turnover.
Ano: 2005 URL: http://orgprints.org/16844/1/uusitalo.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 row cropping system with cover crops for balancing weed and soil fertility management in organic cereal production Organic Eprints
Phan, Hong TT; Thorup-Kristensen, Kristian.
This manuscript shows the result from testing the new row cropping system for its ability to produce a balanced combination of inter-row hoeing and undersown cover crop in order to obtain a sufficient N supply and an effective weed control as well as to identify optimal sowing time for high biomass production and cover crop species suited for late undersowing. The new system produced a sufficient N supply and an acceptable weed control effect, leading to an improvement in the subsequent crop yield. Yield in this system is potentially improved further because some managements are suggested to increase its weed control effect, especially for the perennial creeping thistle cirsium arvense.
Tipo: Journal paper Palavras-chave: Nutrient turnover; Research communication and quality; Biodiversity and ecosystem services; Farm nutrient management; Europe.
Ano: 2019 URL: http://orgprints.org/35191/1/Manuscript-rowcrop%20system.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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Accumulation and translocation of sparingly soluble manure phosphorus in different types of soils after long-term excessive inputs Organic Eprints
Uustitalo, Risto; Ylivainio, Kari; Turtola, Eila; Kangas, Arjo.
When phosphorus (P) is applied to soils in excess of plant P demand, P accumulation takes place. By means of P fractionation, we studied the fate of P in 35 soils that had received long-term surplus P rates as fox and mink manure P (F&MM-P), considered as a sparingly soluble P source. We compared these data with those from the same soils under a more typical P management, i.e., fields amended with soluble P sources superphosphate and dairy manure (SP+DM). Fractionation of manures according to the Hedley procedure suggested limited solubility of F&MM-P, two-thirds of the F&MM-P being soluble in acid (HCl) only. In mineral soils, surplus F&MM-P accumulated for the most part as HCl-P (poorly available), whereas in organic soils accumulation...
Tipo: Journal paper Palavras-chave: Nutrient turnover.
Ano: 2007 URL: http://orgprints.org/17085/1/uusitalo1.pdf
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Ackerbausysteme im ökologischen Landbau Organic Eprints
Beckmann, Uta; Kolbe, Hartmut; Model, Annett; Russow, Rolf.
Zusammenfassung der Ergebnisse und Schlussfolgerungen: Auf einem Sandboden und einem Lößboden wurden in Sachsen ab dem Jahr 1992 komplexe Dauerversuche durchgeführt. Es wurden Verfahren von viehlosen (System Marktfruchtbau) sowie von viehhaltenden Betrieben (System Futterbau) in der Anbaufolge mit zweijährigem Leguminosengras, Sommerweizen und Mais simuliert. In den Versuchen wurden außerdem eine stark unterschiedliche Düngungshöhe mit verschiedenen organischen Düngemitteln sowie differenzierte anbautechnische und vegetationsbegleitende Maßnahmen berücksichtigt. Die Anbauverfahren wurden sowohl in ihren kurzzeitigen Auswirkungen auf Nährstoffdynamik (Nmin, gasförmige N-Emissionen), Ertrag und Produktqualität der Kulturarten als auch in ihren...
Tipo: Report Palavras-chave: Nutrient turnover; Systems research and participatory research; Crop combinations and interactions; Production systems; Soil quality; Soil tillage; Composting and manuring.
Ano: 2000 URL: http://orgprints.org/1535/1/Link%2DVolltext.htm
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Ackerbausysteme im ökologischen Landbau unter besonderer Berücksichtigung von N-Bilanz und Effizienzkennzahlen Organic Eprints
Beckmann, Uta; Kolbe, Hartmut; Model, Annett; Russow, Rolf.
Auf einem Sandboden und einem Lößboden wurden in Sachsen ab dem Jahr 1992 komplexe Dauerversuche durchgeführt. Es wurden Verfahren von viehlosen (System Marktfruchtbau) sowie von viehhaltenden Betrieben (System Futterbau) in der Anbaufolge mit zweijährigem Leguminosengras, Sommerweizen und Mais simuliert. In den Versuchen wurden außerdem eine stark unterschiedliche Düngungshöhe mit verschiedenen organischen Düngemitteln sowie differenzierte anbautechnische und vegetationsbegleitende Maßnahmen berücksichtigt. Die Anbauverfahren wurden sowohl in ihren kurzzeitigen Auswirkungen auf Nährstoffdynamik (Nmin, gasförmige N-Emissionen), Ertrag und Produktqualität der Kulturarten als auch in ihren langfristigen Auswirkungen auf die Nährstoffbilanzen der Fruchtfolgen...
Tipo: Journal paper Palavras-chave: Composting and manuring; Systems research and participatory research; Nutrient turnover; Crop combinations and interactions; Soil tillage.
Ano: 2001 URL: http://orgprints.org/3947/1/UFZ_GasfEmiss_Abschlb.pdf
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Ackerbausysteme im ökologischen Landbau unter besonderer Berücksichtigung von N-Bilanz und Effizienzkennzahlen Organic Eprints
Beckmann, Uta; Kolbe, Hartmut; Model, Annett; Russow, Rolf.
Auf einem Sandboden und einem Lößboden wurden in Sachsen ab dem Jahr 1992 komplexe Dauerversuche durchgeführt. Es wurden Verfahren von viehlosen (System Marktfruchtbau) sowie von viehhaltenden Betrieben (System Futterbau) in der Anbaufolge mit zweijährigem Leguminosengras, Sommerweizen und Mais simuliert. In den Versuchen wurden außerdem eine stark unterschiedliche Düngungshöhe mit verschiedenen organischen Düngemitteln sowie differenzierte anbautechnische und vegetationsbegleitende Maßnahmen berücksichtigt. Die Anbauverfahren wurden sowohl in ihren kurzzeitigen Auswirkungen auf Nährstoffdynamik (Nmin, gasförmige N-Emissionen), Ertrag und Produktqualität der Kulturarten als auch in ihren langfristigen Auswirkungen auf die Nährstoffbilanzen der Fruchtfolgen...
Tipo: Report Palavras-chave: Composting and manuring; Systems research and participatory research; Nutrient turnover; Crop combinations and interactions; Soil tillage.
Ano: 2001 URL: http://orgprints.org/1538/1/1538%2Dbeckmann%2Du%2Det%2Dal%2D2001%2Dackerbausysteme%2Dufz.pdf
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Ackerbausysteme im ökologischen Landbau: Untersuchungen zur Nmin-, N2O-N- und NH2-N-Dynamik sowie Rückschlüsse zur Anbau-Optimierung Organic Eprints
Beckmann, Uta; Kolbe, Hartmut; Model, Annett; Russow, Rolf.
Die Entwicklung der Landwirtschaft war in den letzten Jahrzehnten gekennzeichnet durch einen beispiellosen Anstieg des Dünge- und Pflanzenschutzmitteleinsatzes sowie durch entsprechend starke Ertragssteigerungen. Die damit verbundenen nachteiligen Umweltwirkungen auf Wasser, Boden und Atmosphäre führten einerseits zur Suche nach Optimierungsstrategien und andererseits zu erhöhten Anstrengungen bei der Prüfung alternativer Bewirtschaftungsformen. Zur Prüfung von Ackerbausystemen des ökologischen Landbaus wurden ab dem Jahr 1992 komplexe Dauerversuche angelegt. Es wurden Verfahren von viehlosen sowie von viehhaltenden Betrieben simuliert. In den Versuchen wurden außerdem eine stark unterschiedliche Düngungshöhe mit verschiedenen organischen Düngemitteln...
Tipo: Book Palavras-chave: Composting and manuring; Production systems; Nutrient turnover; Soil quality; Air and water emissions.
Ano: 2002 URL: http://orgprints.org/802/1/kein%2DDokument.pdf
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Acúmulo de nitrogênio e fósforo no tecido de plantas anuais de inverno manejadas sob sistema plantio direto e sistema de cultivo convencional Organic Eprints
PICCIN, R.; KAMINSKI, J.; CASALI, C.A.; CALEGARI, A.; GEBERT, F.H.; SARTORI, R.J.B.; GUBIANI, E.; ROSSATO, L.F.R..
O sistema de manejo pode afetar a disponibilidade de nutrientes para as plantas, em decorrência do sistema de rotação de culturas e da quantidade de resíduo vegetal presente na superfície do solo. O objetivo deste trabalho foi avaliar a quantidade de nitrogênio (N) e fósforo (P) acumulados no tecido vegetal de aveia preta, trigo, centeio, ervilhaca, nabo e tremoço azul, além de verificar seu estado nutricional de N e P. O experimento esta instalado no Instituto Agronômico do Paraná (IAPAR) em Pato Branco, Paraná, em um Latossolo Vermelho aluminoférrico. Em maio de 2011 os tratamentos foram semeados, sendo seis plantas de cobertura: trigo, aveia preta, centeio, ervilhaca, nabo forrageiro e tremoço azul cultivados sob Sistema Plantio Direto (SPD) e Sistema...
Tipo: Conference paper, poster, etc. Palavras-chave: Nutrient turnover; Soil tillage; Greenhouses and coverings; Farm nutrient management.
Ano: 2012 URL: http://orgprints.org/29926/1/2012%20-%20Piccin%20-%20Fertbio.pdf
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Acúmulo e Velocidade de Liberação de Potássio de Resíduos de Plantas Anuais de Inverno Sob Diferentes Preparos de Solo Organic Eprints
GEBERT, F.H.; KAMINSKI, J.; CALEGARI, A.; CASALI, C.A.; TIECHER, T.; PICCIN, R.; BELLINASO, R.J.S..
A manutenção dos resíduos vegetais sobre o solo, o tipo de resíduo e sua velocidade de decomposição são de grande importância no estudo da ciclagem de nutrientes. Este estudo foi desenvolvido na área experimental do IAPAR - Pato Branco-PR, onde foram avaliados seis resíduos de coberturas de inverno: tremoço azul (Lupinus angustifolius L.), ervilhaca comum (Vicia sativa L.), aveia preta (Avena strigosa S.), nabo forrageiro (Raphanus sativus L.), centeio (Secale cereale L.) e trigo (Triticum aestivum L.), sob Sistema Plantio Direto (SPD) e Sistema Cultivo Convencional (SCC) em um Latossolo Vermelho aluminoférrico. Foi avaliado: velocidade de liberação de potássio (K), matéria seca remanescente (MSR) em bolsas de decomposição, teor de carbono orgânico...
Tipo: Conference paper, poster, etc. Palavras-chave: Nutrient turnover; Soil tillage; Greenhouses and coverings.
Ano: 2012 URL: http://orgprints.org/29925/1/2012%20-%20F%C3%A1bio%20-%20RBMCSA.pdf
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ADAS: Field-scale study of sustainability of stockless organic arable production Organic Eprints
Funded by Defra, covers 10ha in a five-course rotation, organic conversion completed in 1995. The aim of the project is to assess the sustainability of arable organic production with particular focus on a stockless rotation on a fertile soil.
Tipo: Research facility description Palavras-chave: Nutrient turnover; Farm nutrient management; Crop husbandry.
Ano: 2020
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Ældre marker med kløvergræs kan beskytte grundvandet mod nitrat Organic Eprints
Eriksen, J.; Vinther, F.P.; Søegaard, K..
Ændringen i EU's landbrugspolitik (CAP) indebærer en afkobling af landbrugsstøtten og en afvikling af den nuværende hektarstøtte. Derved øges græsmarkernes værdi fordi græs vil konkurrere bedre med de øvrige grovfoderemner rent prismæssigt. I fremtiden forventes derfor en betydelig højere græsandel i kvægbrugenes sædskifter end det er tilfældet i dag. Samtidig betyder strukturudviklingen, at kvæggårdene bliver større og et stigende antal brug ikke kan afgræsse alle marker i sædskiftet, da afgræsning langt fra gården er besværlig eller helt uforeneligt med de daglige rutiner. Disse forhold forventes at bevirke, at der på kvægbrugene fremover vil være græsmarker, som får lov til at blive betydeligt ældre end de 2-3 år, der hidtil har været mest...
Tipo: Journal paper Palavras-chave: Nutrient turnover.
Ano: 2004 URL: http://orgprints.org/5478/1/5478.PDF
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