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| Registros recuperados: 20 | |
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| Deleuran, L.C.; Gislum, R.; Boelt, B.. |
| Establishment methods have proven to be of major importance for grass seed production. The objective of this research was to test the effect of different sowing techniques on plant establishment and the subsequent seed yield. Perennial ryegrass (Lolium perenne L.) is used as the model grass due to its large importance in Danish agriculture. In a three-year trial six different methods of under-sowing of perennial ryegrass in a spring barley cover crop were employed. Perennial ryegrass was either sown directly at different depths within the spring barley (Hordeum vulgare L.) rows or placed 2, 6 or 12 cm from the spring barley rows. Results of dry matter yield indicate that the best establishment of the grass occurred when placing the grass 6 or 12 cm from... |
| Tipo: Journal paper |
Palavras-chave: Production systems. |
| Ano: 2010 |
URL: http://orgprints.org/9066/2/9066.pdf |
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| Deleuran, L.C.; Boelt, B.. |
| Festulolium (X Festulolium) has shown a considerable yield potential as a fodder crop and as a direct effect the seed production area in Denmark has increased. The main aim for the present trial is a growing interest for festulolium in organic production systems and hence the requirements for organic produced seed. A 3-year study was conducted to determine the seed yield response in two different types of festulolium in respect to three seed rates (8, 12 and 16 kg ha-1) and three row spacings (12, 24 and 36 cm). The lolium type cv. Paulita was not affected by seeding rate or row spacing. In the tall fescue type cv. Hykor no significant difference in seed yields were found in respect to seeding rate but narrow row spacing 12 and 24 cm yielded more than 36... |
| Tipo: Journal paper |
Palavras-chave: Production systems. |
| Ano: 2009 |
URL: http://orgprints.org/9063/2/9063.pdf |
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| Deleuran, L.C.; Boelt, B.. |
| A major problem in organic grass seed production on arable farms is to provide for a sufficient nitrogen supply. A nitrogen-fixing crop may be able to cover the nitrogen requirement - wholly or partly. However mixed cropping of a grass seed and a nitrogen-fixing crop is expected to reduce the establishment of the seed crop, especially for species that require a long establishment period. One way to achieve a satisfactory establishment of the seed crop can be to introduce an intervening year for cutting forage between cover crop harvest and seed harvest. This will enhance tillering, since the light supply for the undersown grass is increased after each cut. However excessive biomass will hinder drying of the crop at maturity and therefore the growth of the... |
| Tipo: Journal paper |
Palavras-chave: Breeding; Genetics and propagation Pasture and forage crops. |
| Ano: 2002 |
URL: http://orgprints.org/459/1/newsletter34page5_7.pdf |
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| Boelt, B.; Deleuran, L.C.; Phelps, B.. |
| Until now commercial genetically modified (GM) crops – soy, corn, canola and cotton - and their products have not been successfully segregated from organic or conventional non-GM production systems. Where GM crops are grown, GM contamination may be inevitable. However, physical and legal control measures imposed before the introduction of GM crops may help protect organic standards, supply chain integrity, certification and client confidence, but this is not yet fully tested. IFOAM’s approach to its present position on GM crops may not be sustainable long term as several invasive technologies – GM organisms (especially pharma crops, animals and micro-organisms), nanoparticles, and food irradiation – all challenge organic standards and integrity |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Production systems. |
| Ano: 2005 |
URL: http://orgprints.org/7965/1/7965.doc |
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| Deleuran, L.C.. |
| Markets for products with history, distinct characteristics and/or regional origin are in rapid expansion and constitute a promising emerging market. Recent studies suggests that differentiated development in production presents a plausible future for increased biodiversity in the food sector, with different ‘worlds of production’ emerging. This includes the production of vintage (rare) vegetables with distinct characteristics. In Denmark, as in the rest of Europe, interest in preserving and utilizing vintage plant material is growing and projects focusing on e.g. history of the varieties, distinct characteristics (such as potential health aspects) and agronomic robustness have been initiated in recent years and has further increased public interest. Along... |
| Tipo: Newspaper or magazine article |
Palavras-chave: Crop husbandry. |
| Ano: 2016 |
URL: http://orgprints.org/31143/1/2016-02-en.pdf |
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| Boelt, B.; Deleuran, L.C.. |
| Der er krav om at al udsæd til anvendelse i økologisk jordbrug skal være produceret økologisk. Inden for en række arter – specielt grønsager – er økologisk udsæd ikke tilgængelig, så indtil videre er der dispensation for ovennævnte krav. I Forskningsprogram frøavl II er afprøvet økologisk frøproduktion af gulerod, blomkål og porre. Generelt er de opnåede resultater positive både, hvad angår udbytte og kvalitet. Specielt porre har vist sig som en særdeles robust kultur, medens der på Forskningscenter Flakkebjerg har været problemer med svampesygdomme i blomkålsproduktionen (knoldbægersvamp). I projektets sidste år er forskellige strategier mod knoldbægersvamp blevet afprøvet, men de endelige kvalitetsanalyser foreligger endnu ikke. |
| Tipo: Journal paper |
Palavras-chave: Production systems. |
| Ano: 2005 |
URL: http://orgprints.org/7768/2/7768.pdf |
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| Deleuran, L.C.; Boelt, B.. |
| Aiming at developing ways to produce organic GMO-free seeds, trials on different vegetable species were conducted in lightweight tunnels. Organic vegetable seed production is possible in Denmark for some of the late maturing vegetable species - when performed in tunnels. At the Danish Institute of Agricultural Sciences (DIAS) different growing systems in tunnel have been studied in both open pollinated and hybrid carrot (Daucus carota L.) for seed production. Tunnel production of carrot increases yield and germination percentages compared to normal field conditions and yields in the range of 100 –250 g seeds/m2 can be obtained. The lightweight tunnel production system can be widely used and modified for small-scale producers also in developing countries. |
| Tipo: Journal paper |
Palavras-chave: Production systems. |
| Ano: 2006 |
URL: http://orgprints.org/9110/1/9110.doc |
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| Deleuran, L.C.; Boelt, B.. |
| A common assumption is that the quality of the seeds used in many developing countries is poor. Yet, the factors supporting this assumption are not specifically known. Many small farmers in developing countries keep a portion of own produced seed and are very much aware of its importance. However, due to often limited resources the seeds are not given the attention it needs in terms of production, preservation and utilisation. These factors sum up to an unsatisfactory seed quality leading to low agricultural production. In times of disaster, farmers end up selling or consuming all their seeds and for their next harvest they need to be able to purchase seeds. In many rural areas quality seeds are not available. When buying seeds, the farmers are in most... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Production systems. |
| Ano: 2005 |
URL: http://orgprints.org/7962/1/7962.doc |
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| Deleuran, L.C.; Boelt, B.. |
| Production of organic vegetable seeds is possible in Denmark for some of the late maturing vegetable species - when performed in tunnels. At the Danish Institute of Agricultural Sciences (DIAS) different growing systems in tunnels have been studied in carrot (Daucus carota L.), cauliflower (Brassica oleracea var. oleracea) and leek (Allium porrum L.). Tunnel production of carrot and leek seed increases yield and germination percentages compared to normal field conditions. Yields in the range of 100 –250 g seeds/m2 can be obtained in both species. A hybrid cauliflower seed production is possible in tunnels with a yield range of 9,7 – 67,6 g seeds/plant. In cauliflower problems with fungi on the seeds and a following low germination percentage often occur... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Vegetables. |
| Ano: 2005 |
URL: http://orgprints.org/7967/1/7967.doc |
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| Deleuran, L.C.; Boelt, Birte. |
| Interest in preserving and utilizing vintage plant material has increased in later years, and there has been a resurgence of interest in making the vintage plant material available for organic and conventional production in both hobbymarkets and at larger scale for commercial sale. When initiating new seed productions focus on interesting varieties for both consumers and producers are crucial and dialog and commitment among stakeholders to produce and market the varieties in question are essential.In regards to organic seed production; poor seed quality of the organic cultivars produced, lack of knowledge on which cultivars to produce, the current legislation, lack of breeding activities, price issues or poor communication in the supply chain is still an... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Vegetables. |
| Ano: 2017 |
URL: http://orgprints.org/31166/1/Vegetable%20seed%20production_IFOAM_Lise%20C%20Deleuran.docx |
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| Registros recuperados: 20 | |
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