|
|
|
| Registros recuperados: 41 | |
|
|
| Döring, Thomas F.. |
| 1. In order to evaluate effects of straw mulch applied at 2.5 – 5 t ha-1 in organically grown potatoes (Solanum tuberosum L.), 21 field experiments were conducted over five years at two locations Northern Hessen and Southern Niedersachsen, Germany). The experimental sites were characterised by temperate climate conditions (635 – 709 mm precipitation year-1; 8.1°C mean air temperature) and loamy silt soils. The main focus of the study was on aphids and the aphidtransmitted Potato virus Y (PVY). This disease is a main problem in seed potato production. In addition to virus and vectors, associated agronomic effects of straw mulch were studied. 2. Straw mulch significantly reduced the incidence of PVY. It was most effective as a protectant for young plants... |
| Tipo: Thesis |
Palavras-chave: Soil Crop health; Quality; Protection. |
| Ano: 2004 |
URL: http://orgprints.org/19831/1/2004.Doring.Dissertation.pdf |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| Baresel, Jörg Peter; Döring, Thomas F.; Finckh, Maria R.. |
| There is widespread concern over the damage caused by modern agriculture to soil structure and the ecosystem services provided. One approach to overcome this problem is conservation agriculture (CA) which aims to maintain soil structure by minimising soil disturbance, maximising soil cover and using crop rotation. However, despite recent legislation supporting minimum tillage and direct seeding, together with the efforts of pioneer farmers, CA is still practised on less than 4% of the agricultural land in Europe. This underlines the need for major improvements in the approach together with consolidation of, and access to, information about alternative cropping methods and their biological and economic value and performance. A new European FP7-funded... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop husbandry; Soil tillage; Weed management. |
| Ano: 2012 |
URL: http://orgprints.org/21903/1/Baresel-2012-EurAgronCongress-Helsinki-abstract.pdf |
| |
|
|
| 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 |
| |
|
|
| Cooper, J.M.; Baranski, M.; Nobel de Lange, M.; BARBERI, P.; Fliessbach, A.; Peigne, J.; Berner, A.; Brock, C.; Casagrande, M.; Crowley, O.; Davide, C.; De Vliegher, Alex; Döring, Thomas F.; Entz, M.; Grosse, M.; Haase, T.; Halde, C.; Hammerl, V.; Huiting, H.; Leithold, G.; Messmer, M.; Schloter, M.; Sukkel, M.; van der Heijden, M.; Willekens, K.; Wittwer, R.; Mäder, Paul. |
| As part of the TILMAN-ORG CORE ORGANIC II project, data on the use of reduced tillage in organic farming systems from a range of field trials and the published literature was compiled. A meta-analysis was conducted to determine the impacts of reduced tillage on crop yields, weed pressure and soil organic C stocks. This paper highlights some of the key findings from this study. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil tillage; Soil; Weed management. |
| Ano: 2014 |
URL: http://orgprints.org/23970/1/23970%20Copper_MM.pdf |
| |
|
|
| Crowley, Oliver; Döring, Thomas F.; Measures, Mark. |
| Organic farming practices aim to maximise the delivery of ecosystem services in the agricultural landscape. However, in order to maintain optimal crop productivity the mouldboard plough is often used to control weeds and this can have negative effects on a range of soil parameters, thereby jeopardizing delivery of these services. Reduced tillage (RT) can be beneficial to soils and could improve both the efficiency of production and the delivery of ecosystem services on organic farms. However, abandoning the plough on organic farms is challenging due to impaired weed control. Here we report on a two year trial where an RT system with the Ecodyn, with duck feet shares operating at a depth of 7.6 cm in combination with seed drilling, was compared with... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil tillage; Soil; Biodiversity and ecosystem services; Weed management. |
| Ano: 2012 |
URL: http://orgprints.org/20721/1/Crowley_et_al_2012_Reduced_tillage_and_ecosystem_service_delivery_on_organic_farms.pdf |
| |
|
|
| 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 |
| |
|
|
| Döring, Thomas F.; Heimbach, Udo; Thieme, Thomas; Finckh, Maria R.; Saucke, Helmut. |
| Die Anwendung von Strohmulch als eine mögliche Strategie zur Reduzierung von Bodenerosion, Virusinfektionen und Nachernte-Stickstoffverlusten in Kartoffeln wurde hinsichtlich der Effekte auf die Krautfäule (Phytophthora infestans [MONT.] DE BARY) und auf die Pockenkrankheit (Rhizoctonia solani KÜHN) in ökologisch geführten Feldexperimenten über drei Jahre an vier Standorten in Deutschland untersucht. Der Krautfäulebefall wurde in 15 Versuchen als Prozent befallener Blattfläche oder Prozent der Blätter mit Läsionen bonitiert. Rhizoctonia-Pocken auf den geernteten Knollen wurden bei 100 bis 220 Knollen pro Parzelle in 18 Feldversuchen bonitiert. Zusätzlich wurde in einem Feldversuch der Einfluss von Strohmulch auf die Lufttemperatur und die relative... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection Root crops. |
| Ano: 2006 |
URL: http://orgprints.org/19802/1/2006%2DDoring_et_al%2DNBDP%2DI.pdf |
| |
|
|
| Baddeley, J. A.; Döring, Thomas F.; Hatch, David; Marshall, Athole; Pearce, Bruce; Roderick, S; Stobart, Ron; Storkey, Jonathan; Watson, C.A.; Wolfe, Martin. |
| There is a pressing need to develop arable cropping systems that are both more efficient in their use of nitrogen (N) and more resilient to an increasingly variable and unpredictable climate. One potential solution is to use species-rich mixtures of grasses and legumes in the fertilitybuilding phase of a ley/arable crop rotation. These mixtures may reduce N losses and increase productivity of the following crop. They may also have other important benefits such as increased in-field biodiversity. In this project, legume and grass species with a range of tolerances to different environmental conditions, and with differing growth characteristics, are being grown individually and as a mixture across the UK, and their performance assessed. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Nutrient turnover; Crop husbandry. |
| Ano: 2010 |
URL: http://orgprints.org/19774/1/SACSEPA2010JAB.pdf |
| |
|
|
| Pearce, Helen; Döring, Thomas F.. |
| The items reports on first year trials in of the “Quoats” project. It’s well known that oats are generally a good fit in organic rotations and the “Quoats” project – Harnessing new technologies for sustainable oat production and utilisation – aims to make them even better. This five year (2009 – 2014) research project, led by IBERS, Aberystwyth University, brings together a wide range of organisations in the supply chain, from breeders to end-users, to improve the quality and performance of oats. As part of the project, ORC is carrying out field trials to assess the suitability of new oat lines for organic management systems, with particular emphasis on nutrient use efficiency. Eight varieties are being trialled at Wakelyns Agroforestry, Suffolk,... |
| Tipo: Newspaper or magazine article |
Palavras-chave: Breeding; Genetics and propagation. |
| Ano: 2010 |
URL: http://orgprints.org/19873/1/2010.Pearce%26_Doring.Quoats.Bulletin_102.pdf |
| |
|
|
| Döring, Thomas F.; Saucke, Helmut. |
| Das von Blattläusen übertragene Y-Virus der Kartoffel (PVY) stellt eines der Hauptprobleme bei der vegetativen Pflanzkartoffelvermehrung dar, da bei einem Anteil virusinfizierter Knollen über 8% die amtliche Anerkennung als Pflanzgut ausgeschlossen ist. Diesem Risiko steht bei Anerkennung jedoch ein hoher wirtschaftlicher Erlös gegenüber. Das für ökologische Produzenten ab 2004 geltende Verbot der Verwendung von konventionellem Pflanzgut läßt einen steigenden Bedarf an Ökopflanzgut erwarten. Schon jetzt bestehen jedoch v.a. nach blattlausreichen Jahren Engpässe in der Verfügbarkeit von zertifiziertem ökologisch erzeugten Pflanzmaterial. Ziel war daher die Evaluation und Optimierung verschiedener kulturtechnischer Verfahren zur Minderung des Virusrisikos im... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Root crops Crop health; Quality; Protection. |
| Ano: 2003 |
URL: http://orgprints.org/1104/1/1104%2Ddoering%2D2003%2Dstrohmulch%2Dgegen%2Dvirusrisiko%2Dwien.pdf |
| |
|
| |
|
|
| 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 |
| |
|
|
| Haby, Jessica; Döring, Thomas F.; Crowley, Oliver; Lazzaro, Mariaterresa; Smith, Jo. |
| A key challenge in organic agriculture is the reduction of tillage intensity. While previous research has shown earthworms to benefit from reduced tillage (RT), little is known about after-effects of RT during the grass/clover ley phase in organic rotations. In a large-scale replicated on-farm trial in England we studied earthworm populations before and during the ley phase, comparing the Ecodyn cultivator (tilling depth: 7.5 cm) with a mouldboard plough (depth: 15 cm). Spring sampling of earthworms during the ley phase revealed no significant difference in earthworm densities between the two tillage treatments while two years earlier in the arable phase, earthworm densities had been significantly higher under RT. Also, differences in species composition... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil tillage; Soil. |
| Ano: 2015 |
URL: http://orgprints.org/26932/1/26932_haby.pdf |
| |
|
|
| Döring, Thomas F.. |
| Abstract Plant virus epidemiology provides powerful tools to investigate key factors that contribute to virus epidemics in agricultural crops. When successful, epidemiological approaches help to guide decisions regarding plant protection strategies. A recent example is epidemiological research on Potato virus Y (PVY) in Finnish seed potato production; this study led to the dentification of the main PVY vector species and helped to determine the timing of virus transmission. However, pathosystems rarely allow research to produce such clear-cut results. In fact, the notorious complexity of plant virus pathosystems, with multiple interactions between virus, vector, plant and environment, makes them often impenetrable even for advanced epidemiological models.... |
| Tipo: Journal paper |
Palavras-chave: Crop husbandry Crop health; Quality; Protection. |
| Ano: 2011 |
URL: http://orgprints.org/19870/1/Article.pdf |
| |
|
|
| Döring, Thomas F.; Pautasso, Marco; Finckh, Maria R.; Wolfe, Martin. |
| The co-evolution of plants with their pests and diseases is a major driving force in evolution in nature. As a consequence, many pests and pathogens have multiple functions involved in survival on host populations. As a result of this continuous co-evolution, plant pests and pathogens have been selected for high reproduction rates, because of the low probability of an individual being able to find or infect a compatible host plant. For their part, host plants in natural ecosystems are often interspersed among other plant species and show wide and changing variation among individuals for genes affecting specific or non-specific resistance to each of the many pathogens that may attack them. Throughout the plant world there are dynamic and unstable equilibria... |
| Tipo: Book chapter |
Palavras-chave: Breeding; Genetics and propagation Crop health; Quality; Protection. |
| Ano: 2012 |
URL: http://orgprints.org/19803/1/Doering%20chapter%2003.pdf |
| |
| Registros recuperados: 41 | |
|
|
|
