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| Registros recuperados: 25 | |
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| Østergård, Hanne. |
| Modern spring barley varieties have been developed with the aim of combining high productivity and standardised product quality under high-input conditions using pesticides for control of weeds, diseases and insects as well as heavy application of nutrient-rich and water-soluble inorganic fertilizers. In the organic growing system, biotic and abiotic stresses have to be overcome by growing the appropriate varieties and by practicing good farm management. The important spring barley traits to be considered in organic farming are related to the inherited viability and adaptation of plants to survive biotic and abiotic stresses and includes competitive ability (morphology, weed tolerance, growth rate, allelopathy), disease resistance (morphology, specific and... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Surveys and statistics Crop combinations and interactions Breeding; Genetics and propagation Farming Systems Cereals; Pulses and oilseeds. |
| Ano: 2002 |
URL: http://orgprints.org/1406/1/ecopb_poster_berlin_A4.pdf |
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| Østergård, Hanne. |
| Seven discussion documents were made during the SUSVAR Visions workshop ‘Sustainable cereal production beyond 2020: Visions from the SUSVAR1 network’, Karrebæksminde, Denmark, 14-16 April 2008. At the workshop, one discussion documents was written for each of the topics mentioned below. In total 55 persons from 21 European countries participated in the process. The participants came from different disciplines: genetics, plant breeding, genetic resources, agronomy, plant pathology, soil science, biometry and system analysis, all specialised in the area of cereal production. The approach taken at the workshop was to focus on envisioning the future of sustainable agriculture, especially cereal production. This was done by scientific creative thinking on the... |
| Tipo: Working paper |
Palavras-chave: Crop health; Quality; Protection Crop combinations and interactions Weed management Breeding; Genetics and propagation Soil tillage. |
| Ano: 2008 |
URL: http://orgprints.org/14956/1/14956.pdf |
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| Kiær, Lars P.; Skovgaard, Ib M.; Østergård, Hanne. |
| Varietal seed mixtures tend to increase and stabilize crop yields, yet their application is sparse. Large-scale cultivation of variety mixtures may require a better understanding of how inter-varietal interactions and their interaction with the environment may influence the grain yield of variety mixtures relative to their component varieties. For this purpose, six variety mixtures of spring barley and 14 component varieties were grown in each of 17 trial environments. A total of 28 observed and a priori plant characteristics, including grain yield, disease severity and weed competitiveness, were derived for each component variety in each trial. The relationship between inter-varietal diversity of each characteristic and the mixing effect on grain yield... |
| Tipo: Journal paper |
Palavras-chave: Crop combinations and interactions. |
| Ano: 2012 |
URL: http://orgprints.org/21001/1/21001.pdf |
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| Kristensen, Kristian; Bigongiali, Federica; Østergård, Hanne. |
| The paper shows, how incomplete split-plot designs can be constructed from -designs and how they can be analysed. The incomplete split-plot design can be regarded as both a practical and statistical compromise between traditional split-plot design and randomised complete block design. The efficiency of the design is compared to traditional split-plot design and randomised complete block design using data from 5 trials carried out using incomplete split-plot designs in Denmark through 2004-2007. The comparisons showed that the incomplete split-plot design were superior to traditional split-plot design in most cases – and in all cases when comparing differences among treatments in the whole-plot factor. The incomplete split-plot design was in many cases... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Farming Systems; Crop husbandry. |
| Ano: 2008 |
URL: http://orgprints.org/20887/3/20887.pdf |
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| Markussen, Mads Ville; Østergård, Hanne; Oleskowicz-Popiel, Piotr; Schmidt, Jens Ejby; Pugesgaard, Siri. |
| One obvious way to enhance agricultural resilience is for farms to increase self-sufficiency with necessities such as fuel, fodder and fertilizer. Our research seeks to uncover these potentials for Danish organic dairy farming. The setting is a theoretical model of a farm-cooperation of 10 farms of 100 ha each producing only milk and animals for slaughtering and being self-sufficient with fodder and fertilizer. The question is if they can be self-sufficient with energy by means of shared biogas and/ or bioethanol production facilities. The method is mapping of energy, emergy (embodied energy measured in solar energy joules) and mass flows in different scenarios, that are based on empirical data from Danish dairy farms concerning mix of crops, crop yields,... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Farming Systems Recycling; Balancing and resource management Technology assessment. |
| Ano: 2009 |
URL: http://orgprints.org/15842/1/15842_Abstract.pdf |
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| Østergård, Hanne; Kristensen, Kristian; Hovmøller, Mogens; Willas, Jakob. |
| For organic crop production, well-characterised varieties increase the possibilities for controlling diseases and weeds and compensating for deficits in nutrients. Variation in grain yield was studied in about 150 spring barley varieties and variety mixtures and 20 combinations of location, growing system and year. Choice of variety was found to be as important a factor for grain yield as other factors in the management. Some variety mixtures out yielded even the best variety in the mixture, when this was grown in pure stand. Finally, a concept for organic variety testing of spring barley was developed. This Danish project is part of a European COST Network on sustainable low-input cereal production (SUSVAR) which coordinates studies in different countries... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Regulation Crop combinations and interactions Weed management Breeding; Genetics and propagation Biodiversity and ecosystem services. |
| Ano: 2006 |
URL: http://orgprints.org/8136/1/Hanne_Oestergaard_spring_barley_varieties.pdf |
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| Rasmussen, Ilse A.; Halberg, Niels; Hermansen, John; Østergård, Hanne. |
| International Society of Organic Agriculture Research (ISOFAR) afholdt sin første videnskabelige konference d. 21.-23. September 2005 i Adelaide, Australien. ISOFAR konferencen blev holdt samtidig med 15th IFOAM Organic World Congress: Shaping Sustainable Systems og 8th International IFOAM Organic Viticulture and Wine Conference. Der var omkring 1000 deltagere fra mere end 50 lande til hele arrangementet, heraf knap 25 danskere, flest forskere. Der var 11 danske indlæg og 3 postere på ISOFAR-delen og 8 danske indlæg og 3 postere på IFOAM-delen - så Danmark var godt repræsenteret. |
| Tipo: Journal paper |
Palavras-chave: Research communication and quality. |
| Ano: 2005 |
URL: http://orgprints.org/7921/1/7921.doc |
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| Kiær, Lars P.; Skovgaard, Ib; Østergård, Hanne. |
| Plant ecology theory predicts that growing seed mixtures of varieties (variety mixtures) may increase grain yields compared to the average of component varieties in pure stands. Published results from field trials of cereal variety mixtures demonstrate, however, both positive and negative effects on grain yield. To investigate the prevalence and preconditions for positive mixing effects, reported grain yields of variety mixtures and pure variety stands were obtained from previously published variety trials, converted into relative mixing effects and combined using meta-analysis. Furthermore, available information on varieties, mixtures and growing conditions was used as independent variables in a series of meta-regressions. Twenty-six published studies,... |
| Tipo: Journal paper |
Palavras-chave: Crop combinations and interactions; Surveys and statistics. |
| Ano: 2009 |
URL: http://orgprints.org/16964/1/16964.pdf |
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| Rasmussen, Ilse A.; Østergård, Hanne; Willas, Jakob; Nielsen, Niels Erik; Hansen, Preben Klarskov; Hovmøller, Mogens; Backes, Gunter. |
| Gennemgang af hvad en god vårbygsort er for økologisk jordbrug. Sortsvalg, udbytte, sortsblandinger, næringsstofoptagelse, ukrudtskonkurrenceevne, sygdomsrobusthed, molekulære markører. |
| Tipo: Report |
Palavras-chave: Cereals; Pulses and oilseeds Breeding; Genetics and propagation. |
| Ano: 2004 |
URL: http://orgprints.org/3435/1/3435.pdf |
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| Pinnschmidt, Hans O.; Vollmer, Jeanette H.; Østergård, Hanne; Munk, Lisa. |
| Appropriate disease assessment methods and parameters reflecting whole-season disease severity levels in field plots remain important issues in studies related to plant disease epidemiology, disease resistance of crop cultivars, and disease-induced yield losses. Such methods and parameters should be yield-related to ensure relevance. Net blotch severity was determined over time in inoculated and non-inoculated field plots of three spring barley varieties by whole plot assessments and by assessments of individual leaves of single main tillers. Disease severity measures such as the area-under-disease-progress-curve, mean and maximum severity as well as severity levels at specific growth stages (GS) were derived from the data. Their relation to thousand grain... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2007 |
URL: http://orgprints.org/10677/1/10677.pdf |
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| Registros recuperados: 25 | |
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