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| Krogh, P.H.; Lamandé, M.; Eriksen, Jørgen; Holmstrup, Martin. |
| Earthworms have long been recognized for their soil engineering capacities. Since the creation of the ecosystem service concept the utilitarian perception of nature has gained a lot of attention and funding for research. Hence, we selected earthworms and their burrowing activities to enable an assessment of their influence on water movement and nutrient release. The study went on in autumn where earthworm population densities and their burrowing activities were quantified in plots of third year clover-grass crops differing in fertilisation and the manner of removing the biomass either by grazing or cutting. We found very high biomasses as expected for clover-grass about 200 g wet earthworm weight m-2. The common earthworm association typical to our region... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil biology; Biodiversity and ecosystem services; Farm nutrient management. |
| Ano: 2001 |
URL: http://orgprints.org/20690/9/20690b.pdf |
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| Lamandé, M.; Eriksen, J.; Krogh, P.H.; Jacobsen, O.H.. |
| Managed grasslands are characterized by rotations of leys and arable phases. Soil structure is inherited from the last tillage operations (ploughing, harrowing) and evolves during the leys because of climate, earthworms and roots activity, fertilisation, cutting operations or cattle trampling. We tested the effects of the duration of the leys, cattle trampling, and fertilisation on the infiltration of water in the soil profile in managed grasslands. The experiment was situated within the dairy crop rotation on loamy sand at the Foulum experimental farm (Denmark). Irrigation experiments were performed in the 1st and the 3rd year of pasture, with or without slurry application or grazing, and in winter rye. Each plot was irrigated during an hour with 18.5 mm... |
| Tipo: Journal paper |
Palavras-chave: Air and water emissions; Biodiversity and ecosystem services. |
| Ano: 2012 |
URL: http://orgprints.org/20673/4/20673.pdf |
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| Schjønning, Per; Lamandé, M.. |
| Titlen kan lyde som en vittighed: jorden skal bære trafikken,- den skal være bæredygtig. Men driftsmetoder, der skader jorden vedvarende er ikke bæredygtige. Og nutidens maskiner giver skader. Man kunne også stille spørgsmålet, om man kan tale om ”økologisk trafik”? Økologerne har været foregangsmænd/-kvinder hvad angår udfasning af pesticider og mineralsk gødning. Budskabet i denne artikel er, at der ligger en tilsvarende udfordring og venter mht vores trafik i marken. |
| Tipo: Report chapter |
Palavras-chave: Soil quality; Soil tillage; Buildings and machinery. |
| Ano: 2012 |
URL: http://orgprints.org/27257/6/27257.pdf |
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| Krogh, P.H.; Lamandé, M.; Eriksen, J.; Holmstrup, M.. |
| Clover grass is an important element in crop rotations due to its beneficial agronomic properties including nitrogen build-up, biodiversity stimulation and maintenance of soil macropores and it harvests very high levels of earthworm biomass. We studied the relationship between crucial ele-ments of a clover grass crop rotation and earthworm diversity and macropore depth distribution. The dominance of anecics increased from the annual crops to the perenial clover-grass. Aporrec-todea tuberculata decreased significantly Cattle grazing seems to favour coarse macropores made by anecics, Aporrectodea longa and Lumbricus terrestris. Our study stresses the importance of considering subsoil macropores to complete the picture of earthworm influence on soil... |
| Tipo: Journal paper |
Palavras-chave: Soil quality; Biodiversity and ecosystem services. |
| Ano: 2012 |
URL: http://orgprints.org/20691/4/20691.pdf |
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| Lamandé, M.; Eriksen, J.; Krogh, P.H.; Jacobsen, O.H.. |
| Organic dairy farming is characterized by grazing cows in contrast to Danish conventional farms where the majority of cows are kept indoors. Cattle trampling reduces the finer macroporosity in the top 5-10 cm of the soil. This causes a low infiltration capacity at the soil surface, giving a higher probability of macropore flow from the surface. Rapid water movement through macropores bypasses the soil matrix, reducing nitrate leaching. We investigated how three years of cattle trampling in organic grass-clover fields could influence the risk of nitrate leaching in the autumn. The experimental part of this study was situated in Denmark on a loamy sand within a long-term organic dairy crop rotation trial. Experimental plots were irrigated with a concentrated... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Air and water emissions; Biodiversity and ecosystem services. |
| Ano: 2010 |
URL: http://orgprints.org/20676/5/20676.pdf |
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