Crop yields in organic and conventional production – studies from the Öjebyn project
This report was presented at the UK Organic Research 2002 Conference. In order to develop organic dairy production a system study called “The Öjebyn Project” was started in 1990. Öjebyn is a research station of The Swedish University of Agricultural Sciences in northern Sweden. There is 104 hectares...
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ftorgprints:oai:orgprints.org:8270 2023-05-15T17:44:54+02:00 Crop yields in organic and conventional production – studies from the Öjebyn project Jonsson, Simon Powell, Jane 2002 application/pdf https://orgprints.org/id/eprint/8270/ en eng Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth /id/eprint/8270/1/Jonsson_crop_yields_Ojebyn_project.pdf Jonsson, Simon (2002) Crop yields in organic and conventional production – studies from the Öjebyn project. In: Powell, Jane and et al. (Eds.) Proceedings of the UK Organic Research 2002 Conference, Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth, pp. 43-46. Production systems Crop husbandry Conference paper, poster, etc. NonPeerReviewed 2002 ftorgprints 2022-12-11T06:52:27Z This report was presented at the UK Organic Research 2002 Conference. In order to develop organic dairy production a system study called “The Öjebyn Project” was started in 1990. Öjebyn is a research station of The Swedish University of Agricultural Sciences in northern Sweden. There is 104 hectares of arable land; 58 hectares are grown organically and 46 hectares are grown conventionally. The feed produced on the farm was fed to around 50 dairy cows in each system. There has been a crop rotation of six years and a careful handling of farmyard manure and urine from the dairy cows. The crop yields have been recorded for twelve years as have the quality of each crop in terms of energy, protein and mineral content (P, K, Ca, and Mg). The difference in yield between the two systems has been changing over time. During the first three years there was a diminishing yield in the organic system, followed by a steady increase in yield. In the conventional system there was no such trend, on the contrary there was a tiny decreasing trend. Today’s conclusions about total crop yields from the systems would be quite opposite as if they were made six years ago. The organic system has throughout the study delivered crops with higher content of Ca, P and Mg but with a lower content of K. These differences in mineral concentrations affect the need of different mineral supply to the cows and at the end even the animal health. Conference Object Northern Sweden Organic Eprints (Danish Research Centre for Organic Farming, DARCOF) |
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Organic Eprints (Danish Research Centre for Organic Farming, DARCOF) |
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Production systems Crop husbandry |
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Production systems Crop husbandry Jonsson, Simon Crop yields in organic and conventional production – studies from the Öjebyn project |
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Production systems Crop husbandry |
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This report was presented at the UK Organic Research 2002 Conference. In order to develop organic dairy production a system study called “The Öjebyn Project” was started in 1990. Öjebyn is a research station of The Swedish University of Agricultural Sciences in northern Sweden. There is 104 hectares of arable land; 58 hectares are grown organically and 46 hectares are grown conventionally. The feed produced on the farm was fed to around 50 dairy cows in each system. There has been a crop rotation of six years and a careful handling of farmyard manure and urine from the dairy cows. The crop yields have been recorded for twelve years as have the quality of each crop in terms of energy, protein and mineral content (P, K, Ca, and Mg). The difference in yield between the two systems has been changing over time. During the first three years there was a diminishing yield in the organic system, followed by a steady increase in yield. In the conventional system there was no such trend, on the contrary there was a tiny decreasing trend. Today’s conclusions about total crop yields from the systems would be quite opposite as if they were made six years ago. The organic system has throughout the study delivered crops with higher content of Ca, P and Mg but with a lower content of K. These differences in mineral concentrations affect the need of different mineral supply to the cows and at the end even the animal health. |
author2 |
Powell, Jane |
format |
Conference Object |
author |
Jonsson, Simon |
author_facet |
Jonsson, Simon |
author_sort |
Jonsson, Simon |
title |
Crop yields in organic and conventional production – studies from the Öjebyn project |
title_short |
Crop yields in organic and conventional production – studies from the Öjebyn project |
title_full |
Crop yields in organic and conventional production – studies from the Öjebyn project |
title_fullStr |
Crop yields in organic and conventional production – studies from the Öjebyn project |
title_full_unstemmed |
Crop yields in organic and conventional production – studies from the Öjebyn project |
title_sort |
crop yields in organic and conventional production – studies from the öjebyn project |
publisher |
Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth |
publishDate |
2002 |
url |
https://orgprints.org/id/eprint/8270/ |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_relation |
/id/eprint/8270/1/Jonsson_crop_yields_Ojebyn_project.pdf Jonsson, Simon (2002) Crop yields in organic and conventional production – studies from the Öjebyn project. In: Powell, Jane and et al. (Eds.) Proceedings of the UK Organic Research 2002 Conference, Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth, pp. 43-46. |
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