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| Registros recuperados: 36 | |
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| Søegaard, K.; Eriksen, J.; Askegaard, M.. |
| Herbs are established in many organic grasslands due to expected beneficially properties of nutritive value and biodiversity. However, knowledge about grassland herbs is limited. Three mixtures were therefore established at different grazing/cutting management and slurry application. The competitiveness of the species varied very much. Plantain (Plantago lanceolata) and lucerne (Medicargo sativa) competed best under cutting, opposite chicory (Cichorium intybus) that competed best under grazing. Caraway (Carum carvi), burnet (Poterium sanguisorba) and lotus (Lotus coniculatus) had a relative low competitiveness. Slurry application did not affect the proportion of non-leguminous herbs. The nutritive value differed very much. Caraway had the highest and... |
| Tipo: Journal paper |
Palavras-chave: Pasture and forage crops. |
| Ano: 2012 |
URL: http://orgprints.org/20624/4/20624.pdf |
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| Søegaard, K.; Eriksen, J.; Askegaard, M.. |
| In many organic grasslands herbs are established due to their expected beneficial properties for nutritive value and biodiversity. However, knowledge about grassland herbs is limited. Three mixtures were therefore established at different grazing/cutting and fertilization managements to examine the growth potential and feeding value. The competitiveness of the different species varied greatly. Chicory, plantain and caraway were competitive in mixtures with traditional grassland species. Lotus and salad burnet were weak competitors and chervil and sainfoin were very weak. The feeding value was also highly variable. Caraway had high digestibility of organic matter, also compared with the traditional grassland species, whereas plantain and salad burnet had... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Pasture and forage crops. |
| Ano: 2011 |
URL: http://orgprints.org/20685/4/20685.pdf |
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| Madsen, H.K.; Bertelsen, I.; Askegaard, M.. |
| Post-harvest sown catch crops should be sown as early as possible in order to obtain maximum biomass and nutrient uptake in the harvested crop, as biomass production decreased by 2-3.5 percent per day, when time of sowing was postponed throughout August. Furthermore, the winter hardy species included in these experiments had a tendency to yield less than the non-winter hardy catch crops. These experiments imply that early sown catch crops may become a biomass supplement for organic biogas production, provided sufficient yields are obtained and costs for harvest, transportation and storage are adequately low. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Farm nutrient management; Post harvest management and techniques. |
| Ano: 2013 |
URL: http://orgprints.org/24554/1/24554.pdf |
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| Eriksen, J.; Askegaard, M.; Kristensen, K.. |
| Four management systems combining high and low livestock densities (0.7 and 1.4 LU ha-1) and different types of organic manure (slurry and straw based FYM) were applied to an organic dairy crop rotation (barley [undersown] – grass-clover – grass-clover – barley/pea – oats – fodder beet) between 1998 and 2001. The effects of the management systems on crop yields and nitrate leaching were measured. In all four years nitrate leaching, as determined using ceramic suction cups, was higher in the three crops following ploughing of grass-clover than under the barley or grass-clover. Overall, no significant differences in nitrate leaching were observed between the management systems. However, the replacement of the winter wheat crop used in the earlier... |
| Tipo: Journal paper |
Palavras-chave: Nutrient turnover. |
| Ano: 2004 |
URL: http://orgprints.org/1824/1/paper.doc |
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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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| Askegaard, M.; Thomsen, I.K.; Berntsen, J.; Hovmøller, M.S.; Kristensen, K.. |
| In order to obtain a high and stable yield of organic spring barley, production should be optimized according to the specific environment. To test the performance of spring barley varieties under varying cropping conditions, a field experiment was carried out in 2003 and 2004 in a six-field mixed organic crop rotation. We investigated the choice of variety, the order in a rotation,and the application of manure (slurry and farm yard manure; 0 to 120 total-Nha�1) on grain yields of six selected varieties with different characteristics grown in either pure stands or in two spring barley mixtures, each consisting of three varieties. Average grain yield of the barley varieties varied between 3.3 t DM ha-�1 and 4.1 t DM ha-�1. Grain yields of the two... |
| Tipo: Journal paper |
Palavras-chave: Cereals; Pulses and oilseeds. |
| Ano: 2011 |
URL: http://orgprints.org/7853/2/7853.pdf |
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| Eriksen, J.; Askegaard, M.. |
| The experimental area in Foulum for investigating residual effects of grassland hosts this part of the project. Over the last 9 years, three crop rotations have been build up with different frequency of grazed grassland (Table 1) including both unfertilised grass-clover and fertilised pure ryegrass. In 2003 we re-established grass-clover and ryegrass in all rotations for grazing in 2004. In 2005 grasslands similar managed during the last three years (2002-2004) but with widely different grassland frequency in the rotation have been ploughed out. In these crop rotations during 1997-2004 grazed grassland has been present 2, 3 and 6 times equivalent to 25, 38 and 75% of the crop rotation. Thus, the long-term effect of composition and frequency of grasslands... |
| Tipo: Working paper |
Palavras-chave: Nutrient turnover; Air and water emissions. |
| Ano: 2007 |
URL: http://orgprints.org/10622/1/10622.doc |
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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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| Axelsen, J.; Thorup-Kristensen, K.; Askegaard, M.; Krogh, P.H.. |
| The abundance and species composition of soil living mites and Collembola were investigated in autumn and winter in field plots with five different types of catch crops and a control plot that was kept free of vegetation. The catch crops, chicory, white clover, garden lupine, and perennial ryegrass were undersown in barley while fodder radish was sown after harvest .The investigation was carried out at a site on sandy loam and a site on coarse sand. At the sandy site densities up to about 250.000 and 100.000 m-2 of mites and Collembola, respectively, were found. At the sandy loam site densities were up to 120.000 mites m-2 and 150.000 Collembola m-2. The densities of both microarthropods were extremely high with up to 120,000 Collembola m-2 and 90,000... |
| Tipo: Journal paper |
Palavras-chave: Soil biology; Biodiversity and ecosystem services. |
| Ano: 2006 |
URL: http://orgprints.org/7988/1/7988.doc |
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| Rasmussen, I.A.; Askegaard, M.; Olesen, J.E.. |
| Catch crops reduced nitrate leaching in both rotations at Jyndevad. The same tendency was seen in one rotation at Flakkebjerg. At Jyndevad, stubble cultivations decreased Elymus repens density in the treatments without catch crops. Application of manure decreased the E. repens density in one rotation. At Flakkebjerg, there was a lower infestation of C. arvense in the rotation with than without grass-clover, with least biomass in the crop the year after grass-clover. There was no significant difference between the biomass of C. arvense in the treatments with and without catch crop, in spite of the fact that stubble cultivations and row hoeing were carried out without catch crops. The reason was most likely that the nutrients retained in the topsoil by the... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop combinations and interactions; Weed management. |
| Ano: 2007 |
URL: http://orgprints.org/11346/1/abs_6.1_Ilse_Rasmussen.doc |
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| Rasmussen, I.A.; Askegaard, M.; Olesen, J.E.. |
| Long-term control of perennial weeds create a challenge in organic farming, especially in ar-able farming. Perennial weeds are most often controlled by tillage, often stubble tillage after harvest of cereals or short-term tillage during the summer (Melander et al., 2005). Tillage leads to increased leaching of nutrients (Askegaard et al., 2005), which is unacceptable for the environment and in turn renders the succeeding crop less competitive compared to the peren-nial weeds – thus initiating a vicious circle. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop combinations and interactions; Weed management. |
| Ano: 2007 |
URL: http://orgprints.org/11349/1/NJF07_10_Rasmussen2.doc |
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| Registros recuperados: 36 | |
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