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| Registros recuperados: 67 | |
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| Dhamala, N.R.; Søegaard, K.; Eriksen, J.. |
| European agriculture focuses on increasing biodiversity. However, in highly productive temporary grasslands in grass / arable systems, the biodiversity is usually low. Three non-leguminous species have shown high competitive strength in temporary grasslands and ample possibility to increase biodiversity without compromising yields. In this experiment, we examined in detail the competitiveness and productivity of the three forb species: chicory (Cichorium intybus), ribwort plantain (Plantago lanceolata) and caraway (Carum carvi) grown in different proportions in mixtures including traditional grassland species: perennial ryegrass (Lolium perenne) and red clover (Trifolium pratense), with fertiliser application as an additional factor. Dry matter (DM) yield... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop combinations and interactions; Nutrient turnover. |
| Ano: 2015 |
URL: http://orgprints.org/34987/1/Grassland%20and%20forages%20in%20high%20output%20dairy%20farming%20systems.pdf |
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| Pirhofer-Walzl, K.; Eriksen, J.; Rasmussen, J.; Søegaard, K.; Høgh-Jensen, H.; Rasmussen, J.. |
| Aims: Increase of plant diversity has been suggested to enhance grassland productivity and resource use efficiency. Most studies on agricultural grasslands have focused on functional diversity of mixtures comprising legumes and non-legumes, but there is little knowledge of plant nutrient acquisition from deep- and shallow-rooted grassland plant species. To investigate whether deep-rooted (chicory: Cichorium intybus L.; Lucerne: Medicago sativa L.) and shallow-rooted (perennial ryegrass: Lolium perenne L.; white clover: Trifolium repens L.) grassland plant species differ in herbage yield and depth dependent soil N-access, we investigated in the field if 1) a mixture comprising shallow- and deep-rooted grassland plant species has greater herbage yields than... |
| Tipo: Journal paper |
Palavras-chave: Pasture and forage crops. |
| Ano: 2012 |
URL: http://orgprints.org/20614/4/20614.pdf |
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| Eriksen, J.; Søegaard, K.; Askegaard, M.. |
| The residual effect of cutting and grazing during the growing season was investigated in the spring and summer growth in an organic crop rotation with 1-4 year-old grass-clover mixtures of white clover (Trifolium repens L.) and perennial ryegrass (Lolium perenne L.) either with or without red clover (Trifolium pratense L.) and with and without slurry. The white clover mixtures had significantly higher yields in spring and summer in swards that were previously grazed compared to previously cut swards, when slurry was applied. The percentage of white clover in spring was considerably reduced by previous grazing and this caused the yield response of slurry application to be highest following grazing. A similar effect on the clover content was not found in the... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop combinations and interactions; Crop husbandry. |
| Ano: 2010 |
URL: http://orgprints.org/17877/4/17877.pdf |
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| Eriksen, J.; Askegaard, M.; Søegaard, K.. |
| Increasing size of organic dairy farms makes grazing of all cropped land inexpedient due to long distance to the milking facilities. We investigated nutrient dynamics and feed production in two dairy crop rotations with differences in proportion of grazing and cutting. One six year crop rotation represents close to the farm buildings (barley undersown with grass-clover - 4 years of grass-clover - spring barley/catch crop) and another represents further away (barley undersown with grass-clover, 2 years of grass-clover -barley/catch crop - maize/catch crop - lupin/catch crop). In each of the crop rotations was made five treatments concerning grazing/cutting strategy and manure application. Results shows that herbage production was high in year 1-4 of... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Nutrient turnover; Farm nutrient management; Air and water emissions. |
| Ano: 2009 |
URL: http://orgprints.org/16291/1/16291.pdf |
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| Eriksen, J.; Mortensen, T.; Søegaard, K.. |
| Species-rich grasslands may potentially increase carbon (C) storage in soil and an experiment was established to investigate C storage in highly productive temporary multi-species grasslands. Plots were established with three mixtures: 1) a herb mixture containing salad burnet (Sanguisorba minor L.), fenugreek (Trogonella foenum-gruecum), chicory (Chicorium intybus L.), caraway (Carum carvi L.), birdsfoot trefoil (Lotus corniculatus L.), chervil (Anthriscus cerefolium L.), plantain (Plantago lanceolata L.), lucerne (Medicago sativa L.) and melilot (Melilotus officinalis), 2) 50% of the herb mixture and 50% of a white clover (Trifolium repens L.)/perennial ryegrass (Lolium perenne L.) mixture, and 3) 5% of the herb mixture and 95% of the white... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil quality; Biodiversity and ecosystem services. |
| Ano: 2012 |
URL: http://orgprints.org/22043/7/22043.pdf |
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| Mogensen, L.; Kristensen, T.; Søegaard, K.; Jensen, S.K.. |
| Self-sufficiency of nutrients is a central element in the organic farming principles. In a project involving five private organic dairy farms, we aimed to achieve self-sufficiency in vitamins and minerals at farm level. All the herds are fed 100% organically grown feed, but so far supplements of minerals and vitamins based on inorganic and synthetic products are imported to all farms. The same level and type of supplement was used for the cows all year round, even though all cows were on grass for at least 150 days during the summer period. The average daily intake from the supplement for a lactating cow was 751 mg E vitamin, 111 mg Cu, and 558 mg Zn. The content of vitamin and minerals in the home-grown feeds was modelled taking into account the effect... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle; Feeding and growth. |
| Ano: 2009 |
URL: http://orgprints.org/16297/4/Mogensen_2009_vitamins.pdf |
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| Berntsen, J.; Petersen, B.M.; Olesen, J.E.; Eriksen, J.; Søegaard, K.. |
| The FASSET farm model was used to simulate production in an experiment where a grass-clover or a grass ley was either cut or grazed with dairy cows receiving low or high N sup-plements. The six different ley types were ploughed in and followed by three years with spring cereals with undersown catch crops. The original model was extended with a new grass and clover model, which included the capability to simulate rhizodeposition and root growth. The new model predicted the observed annual carbon (C) and nitrogen (N) production satisfactorily. The simulated first year residual effects of a cut grass or grass-clover ley varied between 0 and 34, while the residual effect of a grazed grass or grass-clover ley varied between 71 and 150 fertilizer equivalents... |
| Tipo: Journal paper |
Palavras-chave: Denmark. |
| Ano: 2005 |
URL: http://orgprints.org/4592/1/4592.pdf |
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| Rasmussen, J.; Søegaard, K.; Eriksen, J.. |
| Inclusion of forage legumes in low-input grassland mixtures improves biomass production and soil fertility trough addition of nitrogen (N) from N2-fixation. The impacts of different mixture of legumes and companion grasses on the N production of the forage mixture have rarely been investigated under comparable soil and climatic conditions. We conducted a field experiment on a sandy soil at two nitrogen levels with seven two-species grassland mixtures: alfalfa (Medicago sativa), bird’s-foot trefoil (Lotus corniculatus), red clover (Trifolium pratense), or white clover (Trifolium repens) in mixture with perennial ryegrass (Lolium perenne), and white clover in mixture with meadow fescue (Festuca pratensis), timothy (Phleum pratense), or hybrid ryegrass... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop combinations and interactions; Nutrient turnover. |
| Ano: 2010 |
URL: http://orgprints.org/17882/4/17882.pdf |
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| Elgersma, A.; Søegaard, K.; Jensen, S.K.. |
| Fresh forages are an important natural source of vitamins and fatty acids in ruminant diets, and their concentrations in forage species are important for the quality of animal-derived foods such as dairy and meat products. The aims of this study were to obtain novel information on vitamins and fatty acids (FA) in a variety of forage legumes and non-legume forb species compared to a grass−clover mixture and to explore implications for animal-derived products. Seven dicotyledons [four forbs (salad burnet (Sanguisorba minor), caraway (Carum carvi), chicory (Cichorium intybus), and ribwort plantain (Plantago lanceolata)) and three legume species (yellow sweet clover (Melilotus officinalis), lucerne (Medicago sativa), and birdsfoot trefoil (Lotus... |
| Tipo: Journal paper |
Palavras-chave: Pasture and forage crops. |
| Ano: 2013 |
URL: http://orgprints.org/24764/7/24764.pdf |
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| Søegaard, K.; Sehested, J.; Jensen, S.K.. |
| The aim was to investigate the micro-mineral profile of herbage as affected by grassland species, cutting time and seasonality and in relation to dairy cow requirements. The different grassland species were grown and harvested in mixtures with one grass and one legume for two growing seasons. The species turned out to have very individual mineral profiles, not influenced by year. Among the legumes red clover (Trifolium pratense) had high concentrations of Co, Cu and Zn, white clover (Trifolium repens) of Mn and Fe, lucerne (Medicago sativa) of Se and lotus (Lotus corniculatus) of Co, Mn, Zn and Fe. Among the grasses perennial ryegrass (Lolium perenne) generally had the highest concentrations of all the micro-minerals. Hybrid ryegrass (Lolium hybridum) had... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Pasture and forage crops. |
| Ano: 2010 |
URL: http://orgprints.org/17831/4/17831.pdf |
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| Søegaard, K.; Mortensen, T.B.; Eriksen, J.. |
| Species-rich swards have received increasing interest due to their focus on ecosystem services, animal welfare and product quality. However, in high-yielding swards the proportion of herbs is often limited and there is little knowledge of their management. Seed mixture composition, cutting frequency, fertilization and grazing/cutting strategies were examined over 4 years in 3 experiments to quantify their effects on herbage yield and botanical composition. Inclusion of herbs in the sward gave similar or higher annual yields but swards established with 100% herbs depended on the presence of a driver species. The effects of management differed between species. Herb content in the sward was significantly related to the proportion of herbs in the seed... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Pasture and forage crops. |
| Ano: 2013 |
URL: http://orgprints.org/24755/6/24755.pdf |
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| Søegaard, K.; Eriksen, J.; Strandberg, B.; Dupont, Y.. |
| Multispecies leys contain different ecosystem services, and feed resources for pollinators can possibly be one. The challenge is to construct grassland with different flowering species and with a continuous flowering without compromising yield and herbage quality. A field experiment was carried out to examine the effect of cutting strategy in different designed species mixtures on yield, herbage quality and flowering. Two main types of mixtures were examined. High productive grass/clover mixtures with chicory, ribwort plantain or caraway and lower productive two species mixtures with weak competitors, salad burnet or dandelion, together with either birdsfoot trefoil, red clover or lucerne. The annual dry matter yield was not affected by the cutting... |
| Tipo: Journal paper |
Palavras-chave: Pasture and forage crops. |
| Ano: 2014 |
URL: http://orgprints.org/26543/1/Draft_EcoServe_A.pdf |
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| Eriksen, J.; Søegaard, K.; Kristensen, T.; Fretté, X.C.; Wiking, L.; Holm Nielsen, J.. |
| In order to evaluate how different legumes and herbs affects the quality of organic milk a grazing study was performed at the organic research station Rugballegaard with 48 dairy cows. Swards with Lucerne (Medicargo sativa), red clover (Trifolium pratense), white clover (Trifolium repens) and white clover together with chicory (Cichorium intybus), respectively, were established in 2005 together with perennial ryegrass (Lolium perenne) in two replicates. The study was carried out in 2006 over three two-weeks periods during the season. Generally, the proportion of legumes and chicory was high in the four species mixtures. Sward composition highly affected grazing behaviour. Sward height measurements indicate that the white clover mixture was eaten without... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop combinations and interactions; Dairy cattle. |
| Ano: 2007 |
URL: http://orgprints.org/11223/3/11223.pdf |
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| Søegaard, K.. |
| I Danmark har der ikke været tradition for at afgræsse lucerne, og derfor har alle anvendte sorter været af slættype. I de senere år har det især i økologisk jordbrug været en stigende interesse for afgræsning af lucerne. Tre afgræsningssorter af lucerne blev derfor undersøgt i 2010 på Foulum – to nye sorter Verbena og Camboregio og en ældre sort Luzelle. Sorterne blev dyrket i renbestand og to forskellige blandinger med alm. rajgræs. Parcellerne blev afgræsset af kvier, med en forholdsvis hård afgræsning, i to forskellige slæt/afgræsnings systemer. Generelt klarede Verbena sig bedst og Camporegio dårligst. Camporegio havde det laveste udbytte, den laveste konkurrence overfor græs og ukrudt, den tyndeste plantebestand fra starten i foråret og... |
| Tipo: Report |
Palavras-chave: Pasture and forage crops. |
| Ano: 2011 |
URL: http://orgprints.org/19689/4/19689.pdf |
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| Registros recuperados: 67 | |
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