Greenlandic glacial rock flour improves crop yield in organic agricultural production
The application of mechanically crushed silicate minerals to agricultural soils has been proposed as a method for both improving crop yields and sequestering inorganic carbon through enhanced mineral weathering. In Greenland, large quantities of finely grained glacial rock flour (GRF) are naturally...
Published in: | Nutrient Cycling in Agroecosystems |
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2023
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Online Access: | https://curis.ku.dk/portal/da/publications/greenlandic-glacial-rock-flour-improves-crop-yield-in-organic-agricultural-production(88de2c13-3022-4a58-ba4f-f67fad4f8386).html https://doi.org/10.1007/s10705-023-10274-0 https://curis.ku.dk/ws/files/348204985/s10705_023_10274_0.pdf |
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ftcopenhagenunip:oai:pure.atira.dk:publications/88de2c13-3022-4a58-ba4f-f67fad4f8386 2024-06-09T07:46:28+00:00 Greenlandic glacial rock flour improves crop yield in organic agricultural production Gunnarsen, Klara Cecilia Jensen, Lars Stoumann Rosing, Minik T. Dietzen, Christiana 2023 application/pdf https://curis.ku.dk/portal/da/publications/greenlandic-glacial-rock-flour-improves-crop-yield-in-organic-agricultural-production(88de2c13-3022-4a58-ba4f-f67fad4f8386).html https://doi.org/10.1007/s10705-023-10274-0 https://curis.ku.dk/ws/files/348204985/s10705_023_10274_0.pdf eng eng info:eu-repo/semantics/openAccess Gunnarsen , K C , Jensen , L S , Rosing , M T & Dietzen , C 2023 , ' Greenlandic glacial rock flour improves crop yield in organic agricultural production ' , Nutrient Cycling in Agroecosystems , vol. 126 , no. 1 , pp. 51-66 . https://doi.org/10.1007/s10705-023-10274-0 Enhanced rock weathering ERW Glacial rock flour Mineral fertilizer Potassium Rock dust Silicate minerals article 2023 ftcopenhagenunip https://doi.org/10.1007/s10705-023-10274-0 2024-05-16T11:29:28Z The application of mechanically crushed silicate minerals to agricultural soils has been proposed as a method for both improving crop yields and sequestering inorganic carbon through enhanced mineral weathering. In Greenland, large quantities of finely grained glacial rock flour (GRF) are naturally produced by glacial erosion of bedrock and deposited in easily accessible lacustrine and marine deposits, without the need for energy-intensive grinding. To determine if this material can improve crop yields, we applied 10 and 50 t GRF ha −1 to a sandy, organic agricultural field in Denmark. Two field trials were carried out to test the first-year yield response to GRF in both maize and potatoes, residual effects on potato yields in the year after application, and second and third-year residual effects on spring wheat. Reference-K treatments were included for comparison to determine if the beneficial effects of GRF were primarily due to its K content (3.5% K 2 O). This alternative source of silicate minerals improved crop yields in the year of application. Though there was no improvement in yield with the reference-K treatments, for each additional ton of GRF applied, maize dry yield increased by 59 kg ha −1 and potato tuber yield by an additional 90 kg ha −1 . No residual effects on crop yields were observed in the following years, but we suspect that benefits might persist over multiple seasons at sites with lower initial fertility. The increase in yields achieved with GRF could offset some of the costs of applying silicate minerals as a CO 2 sequestration scheme. Article in Journal/Newspaper Greenland greenlandic University of Copenhagen: Research Greenland Nutrient Cycling in Agroecosystems 126 1 51 66 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
Enhanced rock weathering ERW Glacial rock flour Mineral fertilizer Potassium Rock dust Silicate minerals |
spellingShingle |
Enhanced rock weathering ERW Glacial rock flour Mineral fertilizer Potassium Rock dust Silicate minerals Gunnarsen, Klara Cecilia Jensen, Lars Stoumann Rosing, Minik T. Dietzen, Christiana Greenlandic glacial rock flour improves crop yield in organic agricultural production |
topic_facet |
Enhanced rock weathering ERW Glacial rock flour Mineral fertilizer Potassium Rock dust Silicate minerals |
description |
The application of mechanically crushed silicate minerals to agricultural soils has been proposed as a method for both improving crop yields and sequestering inorganic carbon through enhanced mineral weathering. In Greenland, large quantities of finely grained glacial rock flour (GRF) are naturally produced by glacial erosion of bedrock and deposited in easily accessible lacustrine and marine deposits, without the need for energy-intensive grinding. To determine if this material can improve crop yields, we applied 10 and 50 t GRF ha −1 to a sandy, organic agricultural field in Denmark. Two field trials were carried out to test the first-year yield response to GRF in both maize and potatoes, residual effects on potato yields in the year after application, and second and third-year residual effects on spring wheat. Reference-K treatments were included for comparison to determine if the beneficial effects of GRF were primarily due to its K content (3.5% K 2 O). This alternative source of silicate minerals improved crop yields in the year of application. Though there was no improvement in yield with the reference-K treatments, for each additional ton of GRF applied, maize dry yield increased by 59 kg ha −1 and potato tuber yield by an additional 90 kg ha −1 . No residual effects on crop yields were observed in the following years, but we suspect that benefits might persist over multiple seasons at sites with lower initial fertility. The increase in yields achieved with GRF could offset some of the costs of applying silicate minerals as a CO 2 sequestration scheme. |
format |
Article in Journal/Newspaper |
author |
Gunnarsen, Klara Cecilia Jensen, Lars Stoumann Rosing, Minik T. Dietzen, Christiana |
author_facet |
Gunnarsen, Klara Cecilia Jensen, Lars Stoumann Rosing, Minik T. Dietzen, Christiana |
author_sort |
Gunnarsen, Klara Cecilia |
title |
Greenlandic glacial rock flour improves crop yield in organic agricultural production |
title_short |
Greenlandic glacial rock flour improves crop yield in organic agricultural production |
title_full |
Greenlandic glacial rock flour improves crop yield in organic agricultural production |
title_fullStr |
Greenlandic glacial rock flour improves crop yield in organic agricultural production |
title_full_unstemmed |
Greenlandic glacial rock flour improves crop yield in organic agricultural production |
title_sort |
greenlandic glacial rock flour improves crop yield in organic agricultural production |
publishDate |
2023 |
url |
https://curis.ku.dk/portal/da/publications/greenlandic-glacial-rock-flour-improves-crop-yield-in-organic-agricultural-production(88de2c13-3022-4a58-ba4f-f67fad4f8386).html https://doi.org/10.1007/s10705-023-10274-0 https://curis.ku.dk/ws/files/348204985/s10705_023_10274_0.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland greenlandic |
genre_facet |
Greenland greenlandic |
op_source |
Gunnarsen , K C , Jensen , L S , Rosing , M T & Dietzen , C 2023 , ' Greenlandic glacial rock flour improves crop yield in organic agricultural production ' , Nutrient Cycling in Agroecosystems , vol. 126 , no. 1 , pp. 51-66 . https://doi.org/10.1007/s10705-023-10274-0 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s10705-023-10274-0 |
container_title |
Nutrient Cycling in Agroecosystems |
container_volume |
126 |
container_issue |
1 |
container_start_page |
51 |
op_container_end_page |
66 |
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1801376320910786560 |