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| Registros recuperados: 41 | |
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| Döring, Thomas F.; Bocci, Riccardo; Hitchings, Roger; Howlett, S. A.; Lammerts van Bueren, E.T.; Pautasso, Marco; Raaijmakers, M; Rey, F; Stubsgaard, Anke; Weinhappel, M.; Wilbois, Klaus-Peter; Winkler, Louisa; Wolfe, M S. |
| Organic agriculture regulations, in particular European regulation EC 889/2008, prescribe the use of organically produced seed. For many cultivated plants, however, organic seed is often not available. This is mainly because investment in organic plant breeding and seed production has been low in the past. To bridge the gap between organic seed supply and demand, national and European regulations define certain circumstances under which organic producers are permitted to use non-organically produced seed. While the organic sector currently depends on these concessions, they also threaten to impede a further increase in the demand for organic seed, thereby potentially restraining present and future investment in organic seed production and plant breeding.... |
| Tipo: Journal paper |
Palavras-chave: Breeding; Genetics and propagation. |
| Ano: 2012 |
URL: http://orgprints.org/21904/1/Doring%20et%20al%202012-ORGA%20-%20orgprints.pdf |
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| Vieweger, Anja; Häring, Anna Maria; Padel, Susanne; Döring, Thomas F.; Ekert, Stefan; Lampkin, Nicolas; Murphy-Bokern, Donal; Otto, Kristin. |
| In 2001, the German Federal Government established the Federal Scheme for Organic Agriculture (BÖL). The goal was to improve the professionalism of organic farming in Germany; to support sustained growth in production of organic food; and to stimulate a corresponding growth in the market for organic food. The paper presents results of an evaluation carried out by an international team in 2012. Our evaluation focused in particular on all research initiated and completed in period 2003 to 2010. The overall aim of the evaluation was to assess the relevance and impact of the research in relation to the BÖL’s goals, the effectiveness of the deployment of the research funding resources, and the efficiency of programme management. Recommendations relate to... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Technology transfer; Research communication and quality. |
| Ano: 2014 |
URL: http://orgprints.org/30500/7/Viehweger%20et%20al%202014.pdf |
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| Döring, Thomas F.; Weedon, Odette; Brumlop, Sarah; Wolfe, Martin; Finckh, Maria R.. |
| Three Composite Cross Populations (CCPs) of winter wheat were created in 2001, one from crossing high baking quality parents (called QCCP), one based on high yielding parents (YCCP), and one created from both parent sets combined (YQ). All three CCPs were grown for several years in the UK and in Germany under conventional and organic cropping management. Based on properties of the different parent sets, yields were predicted to be highest in the YCCP and lowest in the QCCP, with the YQCCP in between. However, data showed that the YCCP was not significantly higher-yielding than the more generalist YQCCP in five out of six sites; in fact, the YQCCP even tended to outyield the YCCP on average over all sites, and this effect was significant at the German... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation. |
| Ano: 2015 |
URL: http://orgprints.org/26982/1/26982_doering.pdf |
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| Döring, Thomas F.; Piepho, Hans Peter. |
| Despite the importance of yield stability in organic agriculture, little quantitative information is currently available on the factors limiting stability or on optimal approaches for improving it. Research so far indicates that organic systems are not always more stable than conventional systems; which system is more stable is likely to depend on the spatial and temporal scale of stability and on the measure of stability used. We show that opportunities for quantifying yield stability in organic farming lie in the targeted coordination of existing data networks within the organic community in order to increase yield stability on farms and beyond. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general; Crop husbandry. |
| Ano: 2015 |
URL: http://orgprints.org/27117/1/27117_d%C3%B6ring.pdf |
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| Döring, Thomas F.; Baresel, Jörg Peter; Borgen, Anders; Finckh, Maria R.; Howlett, Sally; Ortolani, Livia; Pearce, Bruce; Pedersen, T.M.; Wolfe, Martin. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Breeding; Genetics and propagation Crop health; Quality; Protection. |
| Ano: 2013 |
URL: http://orgprints.org/27954/1/2013.Doring%20et%20al.COBRA.Eucarpia.pdf |
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| Howlett, Sally; Winkler, Louisa; Döring, Thomas F.; Pearce, Helen; Negri, Valeria; Torricelli, Renzo; Wolfe, Martin. |
| Field trials were conducted for three years on an organic farm in England to assess the performance and yield variability of two synthetic sprouting broccoli populations with 4 or 8 parents respectively, along with the original landrace mother plants and a commercial F1 hybrid variety as control (Santée). In terms of total yield, Santée outperformed the other entries, but for some other traits, e.g. heading time and number of sprouts, Santée was comparable with the mean of one or more of the genetically diverse entries. Analysis of yield variability over time showed mixed results. With regard to total yield and total sprout number, variability was higher in the F1 hybrid than in the genetically diverse populations, but for other parameters such as average... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Vegetables Breeding; Genetics and propagation. |
| Ano: 2015 |
URL: http://orgprints.org/26985/1/26985_howlett.pdf |
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| Storkey, Jonathan; Döring, Thomas F.; Baddeley, J. A.; Marshall, Athole; Roderick, S.; Jones, Hannah. |
| The ability of different legume cover crops to suppress annual weeds during the early establishment phase was compared using a simulation model of inter-plant competition and field observations. Height, partitioning parameters, extinction coefficients, crop density and time of emergence were recorded for 11 species sown in monocultures. A naturally occurring population of fat hen (Chenopodium album) was present on the experiment. The competition model was run to compare the expected suppressive ability of the different species on this weed. Samples of C. album were also taken from each plot immediately prior to cutting to provide some empirical observations. Predicted suppressive ability was correlated with seed size and height with large seeded, tall... |
| Tipo: Journal paper |
Palavras-chave: Crop combinations and interactions; Soil; Weed management. |
| Ano: 2011 |
URL: http://orgprints.org/19881/1/2011.Storkey_et_al.AAB.pdf |
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| Döring, Thomas F.; Crowley, Oliver; Pearce, Helen; Storkey, Jonathan; Brown, Rob; Jones, Hannah. |
| The inter-relationship between food production and biodiversity is now well established. The ecosystem services provided by the organisms within the environment include, for example, nutrient cycling, pest regulation and pollination, to name but a few. However, perhaps the greatest challenge now facing agricultural production is to find ways of enhancing these ecosystem services, while at the same time increasing food production – particularly in light of food security issues. A range of farm and landscape management options include ‘setting aside’ land for wildlife. However, some proponents argue that such land should be used for food production. While the debate continues, there is no doubt that a large body of scientific evidence from the last three... |
| Tipo: Newspaper or magazine article |
Palavras-chave: Crop combinations and interactions; Crop husbandry. |
| Ano: 2011 |
URL: http://orgprints.org/21906/1/2011.Doring%20et%20al.Org%20Farm%20108_LegLink.pdf |
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| Reckling, Moritz; Döring, Thomas F.; Bloch, Ralf; Stein-Bachinger, Karin; Bachinger, Johann. |
| Auf dem Modellbetrieb für Ökolandbau in Müncheberg wurden von 1993 bis 2013 Feldversuche zur Ermittlung der Ertragsstabilität von zwei Körnerleguminosen (Schmalblättrige Lupine und Futtererbse), Wintergetreide (Roggen und Weizen), Hafer und Silomais durchgeführt. Zwei orthogonale Datensätze wurden genutzt um die temporären Ertragsschwankungen der Einzelkulturen zu vergleichen. Beide Körnerleguminosen zeigten die geringste Ertragsstabilität von allen untersuchten Kulturen. Dies war sowohl für varianzbasierte als auch für regressionsbasierte Stabilitätsparameter der Fall. Gründe für die geringe Ertragsstabilität sind unzureichend bekannt. Es müssen Strategien für das Management entwickelt werden, um mit den großen Schwankungen umzugehen. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Production systems Cereals; Pulses and oilseeds Crop husbandry. |
| Ano: 2015 |
URL: http://orgprints.org/26912/1/26912_reckling.pdf |
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| Döring, Thomas F.; Heimbach, Udo; Thieme, Thomas; Saucke, Helmut. |
| In Praxisversuchen wurde über drei Jahre der Einfluss von Strohmulch auf das Auftreten von PVY (Potato virus Y), den Befall mit dem Kartoffelkäfer (Leptinotarsa decemlineata) und den Knollenertrag in ökologisch angebauten Kartoffeln untersucht. Strohmulch führte in drei von 17 Experimenten zu einer signifikanten Reduktion von PVY, und in weiteren sieben Versuchen gab es einen nicht-signifikanten Trend zur erminderung von PVY. Der Effekt von Strohmulch auf PVY scheint vom allgemeinen Infektionsniveau abzuhängen, welches je nach Jahr, Standort und Sorte unterschiedlich war. So gab es in den Jahren 2002 und 2004 bei allgemein hohem Infektionsdruck eine konsistente PVY-Verminderung. Im Gegensatz dazu konnte im Jahr 2003, bei nur sehr geringem Infektionsdruck,... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection Root crops. |
| Ano: 2006 |
URL: http://orgprints.org/19800/1/2006%2DDoring_et_al%2DNBDP%2DII.pdf |
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| Döring, Thomas F.; Kromp, Bernhard. |
| Data of comparative studies about carabid beetles in organically and conventionally managed winter cereal fields of central Europe, using the pitfall trapping method, were collected from the literature and unpublished data sources and were then pooled and analysed. According to an index, which was designed to calculate how much a species benefits from organic management, Carabus auratus turned out to benefit most. Some Amara species (A. familiaris, A. similata and A. aenea) as well as Pseudoophonus rufipes and Harpalus affinis also showed high index values. When analysing the traits of the carabids, the habitat preference was the most important variable for the differentiation of organic and conventional management. The stronger the preference... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection Cereals; Pulses and oilseeds. |
| Ano: 2003 |
URL: http://orgprints.org/1106/1/kein%2DDokument.pdf |
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| Döring, Thomas F.; Schrader, Joachim; Schüler, Christian. |
| The aphid-vectored Potato virus Y (PVY) is currently seen as an important limiting factor in the production of potatoes in many countries. Using a contentanalysis approach, we investigated the German extension literature for recommendations regarding the control of PVY. Media included articles from periodicals addressing farmers and agricultural textbooks published in the last five decades (1955–2004). In the current literature (1995–2004), the clearly dominating strategy was found to be insecticidal control, although this strategy has been subject to some criticism in the scientific literature. Over the last five decades we also found a strongly increasing representation of insecticidal strategies. Furthermore, over this period of time, information... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection Knowledge management Root crops. |
| Ano: 2006 |
URL: http://orgprints.org/19778/1/2006%2DDoring_et_al%2DPotres.pdf |
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| Döring, Thomas F.; Brandt, M; Heß, J; Finckh , M; Saucke, H. |
| The application of straw mulch to organic seed potatoes (Solanum tuberosum L.) has been shown to reduce virus incidence. In order to determine the associated agronomic effects of straw mulch, applied at 2.5–5 t ha�1, on soil nitrate dynamics, weed development, tuber yield and soil erosion, 12 field experiments were evaluated. Experiments were conducted on organic farms over 3 years at two locations in a temperate climate (635–709 mm precipitation/year; 8.1 8C mean air temperature) on loamy silt soils. Tuber yield and tuber size distribution were not influenced significantly by mulching. However, the risk of undesirable post harvest N-leaching was significantly reduced due to the immobilization of nitrate–N after harvest at 6.8–7.0 kg N t-1 straw in two... |
| Tipo: Journal paper |
Palavras-chave: Soil; Root crops. |
| Ano: 2005 |
URL: http://orgprints.org/16674/1/15.Doering_et_al._2005.FCR.pdf |
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| Saucke, H; Döring, Thomas F.. |
| Potato virus Y (PVY) is transmitted non-persistently by winged morphs of many aphid species and is a major problem in seed potato production. In order to evaluate the potential of straw mulch applications (4-5 t ha-1) and presprouting on PVY reduction, small scale organically managed field experiments were carried out in Northern Hessen, Germany, over 3 yr. In all years mulching significantly reduced aphid infestation on leaves as well as PVY incidence in tubers. For the effect of presprouting the temporal coincidence of two factors was crucial � crop emergence and aphid flight activity. Presprouting decreased PVY incidence when in the phase of early crop emergence aphid spring flight activity was low, but increased it, although not significantly, when... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection Root crops. |
| Ano: 2004 |
URL: http://orgprints.org/16677/1/12.Saucke_%26_Doering_2004.AAB.pdf |
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| Döring, Thomas F.; Storkey, Jonathan; Baddeley, J. A.; Crowley, Oliver; Howlett, S. A.; McCalman, Heather; Pearce, Helen; Roderick, Stephen; Jones, H E. |
| Legume-based leys offer multiple benefits to ecosystem service provision, e.g. protecting soil and supporting pollinators. While weeds can play an antagonistic role during ley establishment, little is known about weed communities in these leys or about the optimal solutions for weed control in the establishment phase. To determine if the choice of ley species affects weed levels, we conducted field trials at six locations in the UK, measuring weed cover and biomass in monoculture plots of 12 legume and 4 grass species, plus an all species mix over two years. In these trials and in additional on-farm trials, weed cover and diversity were lower in the second than in the first year, owing to a decrease of annual weeds over time. The ability of a diverse... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Pasture and forage crops; Biodiversity and ecosystem services; Weed management. |
| Ano: 2012 |
URL: http://orgprints.org/20716/1/Doring_et_al_2012_Legume_mixtures_for_ecosystem_service_delivery_%2D_weed_control.pdf |
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| Döring, Thomas F.; Chittka, Lars. |
| We review the rich literature on behavioural responses of aphids (Hemiptera: Aphididae) to stimuli of different colours. Only in one species there are adequate physiological data on spectral sensitivity to explain behaviour crisply in mechanistic terms. Because of the great interest in aphid responses to coloured targets from an evolutionary, ecological and applied perspective, there is a substantial need to expand these studies to more species of aphids, and to quantify spectral properties of stimuli rigorously. We show that aphid responses to colours, at least for some species, are likely based on a specific colour opponency mechanism, with positive input from the green domain of the spectrum and negative input from the blue and/or UV region. We... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2007 |
URL: http://orgprints.org/19804/1/2007.Doring_%26_Chittka.APIS.pdf |
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| Vieweger, Anja; Häring, Anna Maria; Padel, Susanne; Döring, Thomas F.; Ekert, Stefan; Lampkin, Nicolas; Murphy-Bokern, Donal; Otto, Kristin. |
| In 2001, the German Federal Government established the Federal Scheme for Organic Agriculture (BÖL). The goal was to improve the professionalism of organic farming in Germany; to support sustained growth in production of organic food; and to stimulate a corresponding growth in the market for organic food. The paper presents results of an evaluation carried out by an international team in 2012. Our evaluation focused in particular on all research initiated and completed in period 2003 to 2010. The overall aim of the evaluation was to assess the relevance and impact of the research in relation to the BÖL’s goals, the effectiveness of the deployment of the research funding resources, and the efficiency of programme management. Recommendations relate to... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Technology transfer; Research communication and quality. |
| Ano: 2014 |
URL: http://orgprints.org/23555/1/23555_MM.pdf |
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| Registros recuperados: 41 | |
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