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Registros recuperados: 7
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Fungi in Danish soils under organic and conventional farming Organic Eprints
Elmholt, S.; Labouriau, R..
A multi-soil study was conducted in Denmark including 29 sites, 8 classified as ‘Organic’, 11 as ‘Conventional with manure and synthetic fertilisers’ and 10 as ‘Conventional with synthetic fertilisers’. The variability of fungal abundance within the three farming systems and the long-term effects of different farming systems on fungal propagules in soil were evaluated. Fungal abundance showed large variations within all three farming systems and this variability reduced the possibility to obtain general conclusions on fungal composition in soils under different farming systems. This was illustrated by the results on total propagule numbers of filamentous fungi and yeasts. Penicillium spp. and Gliocladium roseum were more abundant under organic than...
Tipo: Journal paper Palavras-chave: Soil biology; Biodiversity and ecosystem services.
Ano: 2005 URL: http://orgprints.org/3328/1/3328.pdf
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Controlled traffic farming increases root growth, crop and soil nitrogen in vegetable cropping systems Organic Eprints
Hefner, M.; Labouriau, R.; Nørremark, M.; Kristensen, H. L..
Results from field trials on sandy and sandy loam of controlled traffic farming
Tipo: Conference paper, poster, etc. Palavras-chave: Soil quality; Crop combinations and interactions; Nutrient turnover; Soil tillage; Air and water emissions; Vegetables; Root crops.
Ano: 2018 URL: http://orgprints.org/35459/1/20th%2BNitrogen%2BWorkshop_2018_Final%2BProceedings%287%29.pdf
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Controlled traffic farming increased crop yield, root growth, and nitrogen supply at two organic vegetable farms Organic Eprints
Hefner, M.; Labouriau, R.; Nørremark, Michael; Kristensen, Hanne Lakkenborg.
Increased farm machinery weight in agricultural production results in soil compaction. Controlled traffic farming (CTF) restricts traffic to permanent lanes, thereby creating traffic free beds for crop production. Field experiments were conducted at two organic vegetable farms in Denmark, on a sandy loam (2013–2016) and on coarse sand (2013–2015) to investigate CTF effects compared with random traffic farming (RTF) on vegetable yield, root growth, and soil mineral nitrogen (N). Root growth was measured using minirhizotrons. White cabbage, potato, and beetroot yield increased by 27%, 70% and 42%, respectively, in CTF compared with RTF in 2015 and winter squash indicated a yield increase of 43% on sandy loam in 2016. White cabbage (2015) and potato, beetroot...
Tipo: Journal paper Palavras-chave: Soil quality; Crop combinations and interactions; Nutrient turnover; Soil tillage; Air and water emissions; Vegetables; Root crops.
Ano: 2019 URL: http://orgprints.org/35456/1/Hefner%20et%20al%202019%20Controlled%20traffic%20farming.pdf
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Elimination behaviour and soil mineral nitrogen load in an organic system with lactating sows – comparing pasture based systems with and without access to poplar (Populus sp.) trees Organic Eprints
Jakobsen, M.; Hermansen, J.E.; Andersen, Heidi Mai-Lis; Jørgensen, Uffe; Labouriau, R.; Rasmussen, Jim; Kongsted, A.G..
Innovative strategies in free-range pig production is needed to improve the environmental performance of the system. Based on previous studies, inclusion of trees was hypothesized to improve the system’s nitrogen efficiency. We investigated sow elimination behaviour, faeces load and localisation as well as soil mineral nitrogen load in pasture based individual paddocks with and without access to two rows of poplar (Populus sp.) trees. Unlike expected sows showed no preference for eliminating in the zone with poplars but clearly avoided defecating near the hut, feed and water. Soil mineral nitrogen load showed a heterogeneous pattern as also found in previous studies. In comparison to grass, our results indicated that the poplars had an increased winter...
Tipo: Journal paper Palavras-chave: Pigs.
Ano: 2018 URL: http://orgprints.org/33906/1/Paper%20II.pdf
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Effect of poplar trees on nitrogen and water balance in outdoor pig production – A case study in Denmark Organic Eprints
Manevski, Kirl; Jakobsen, Malene; Kongsted, A.G.; Geogiadis, Petros; Labouriau, R.; Hermansen, J.E.; Jørgensen, Uffe.
Nitrate leaching from outdoor pig production is a long-standing environmental problem for surface and groundwater pollution. In this study, the effects of inclusion of poplar trees in paddocks for lactating sows on nitrogen (N) balances were studied for an organic pig farm in Denmark. Vegetation conditions, soil water and nitrate dynamics were measured in poplar and grass zones of paddocks belonging to main treatments: access to trees (AT), no access to trees (NAT) and a control without trees (NT), during the hydrological year April 2015 to April 2016. Soil water drainage for each zone, simulated by two simulation models (CoupModel and Daisy), was used to estimate nitrate leaching from the zones in each paddock. N balances (input minus output) for the...
Tipo: Journal paper Palavras-chave: Pigs.
Ano: 2018 URL: http://orgprints.org/33775/1/1-s2.0-S0048969718328729-main.pdf
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Pore characteristics and hydraulic properties of a sandy loam supplied for a century with either animal manure or mineral fertilizers Organic Eprints
Schjønning, P.; Iversen, B.V.; Munkholm, L.J.; Labouriau, R.; Jacobsen, O.H..
Application of organic residues to soil is generally assumed to improve soil tilth. Only few studies have reported on the long-term effects on the more subtle aspects of soil porosity and no reports have considered the potential effects of organic amendments on the pore system in the subsoil. We sampled undisturbed soil cores (100 cm3 and 6280 cm3) in metal cylinders in differently fertilized plots in the long-term field experiments at Askov Experimental Station, Denmark. We selected the 0-60 cm soil layer of plots dressed for a century with either mineral fertilizers (labelled NPK) or animal manure (labelled AM). Both fertilization treatments were studied at two levels of nutrient application: 'normal' (labelled '1') and 1.5 times 'normal' (labelled...
Tipo: Journal paper Palavras-chave: Nutrient turnover; Crop combinations and interactions; Soil biology; Soil quality; Air and water emissions; Soil tillage; Composting and manuring.
Ano: 2005 URL: http://orgprints.org/5486/1/5486.pdf
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Influence of grouping strategy on welfare measurements of organic entire male pigs Organic Eprints
Thomsen, Rikke; Rousing, Tine; Edwards, Sandra A; Labouriau, R.; Sørensen, Jan Tind.
Alternatives to surgical castration in organic pig production are needed, due to stress and pain caused by castration of male pigs. One alternative, which is in accordance with the values in organic farming, is production of entire male pigs. However, changed behaviour of entires compared to castrates might affect the welfare of the animals. Therefore, in order to produce entire male pigs, without compromised animal welfare, changes in the production system, possible offered by the organic farming system, with e.g. more available space and access to rooting material and roughage, might be a necessity. The aim of this article is to investigate the effect of grouping strategy and group size on levels of mounting behaviour and skin lesions, hypothesising that...
Tipo: Journal paper Palavras-chave: "Organics" in general; Production systems; Health and welfare.
Ano: 2015 URL: http://orgprints.org/28171/7/28171.pdf
Registros recuperados: 7
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