Sørensen, Peter (2022) Nutrient cycling in the Danish long-term experiment with arable cropping -examples. Speech at: Studies of agroecology in long-term organic and conventional cropping systems, Aarhus University, Research Center Foulum,Tjele, Denmark, 7-8 June 2022. [Completed]
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Summary
Continuous use of cover crops including legumes showed an N yield comparable with 70 kg total N/ha/yrin manure; Nitrate leaching is mainly influenced by use of cover crops and total N inputs –not by organic vs conventional cropping; Cover crop mixtures including legumes can self-regulate N-fixation; N surplus is linked to soil carbon stock changes.
Some conclusions:
- continuous use of cover crops including legumes showed an N yield comparable with 70 kg total N/ha/yr in manure
- nitrate leaching is mainly influcenced by use of cover crops and total N inputs - not by organic vs conventional cropping
- cover crop mixtures including legumes can self-regulate N-fixation
- N surplus is linked to soil carbon stock changes
| EPrint Type: | Conference paper, poster, etc. |
|---|---|
| Type of presentation: | Speech |
| Agrovoc keywords: | Language Value URI English nutrient cycles http://aims.fao.org/aos/agrovoc/c_12869 English arable farming http://aims.fao.org/aos/agrovoc/c_36528 English cropping systems http://aims.fao.org/aos/agrovoc/c_1971 English cover crops -> cover plants http://aims.fao.org/aos/agrovoc/c_1936 English legumes http://aims.fao.org/aos/agrovoc/c_4255 |
| Subjects: | Crop husbandry > Crop combinations and interactions Knowledge management > Research methodology and philosophy > Systems research and participatory research Food systems > Produce chain management |
| Research affiliation: | Denmark > Organic RDD 4 > ClimOptic Denmark > DARCOF III (2005-2010) > CROPSYS - The effect of cropping systems on production and the environment Denmark > Organic RDD 5 > CCRotate Denmark > Organic RDD 1 > HighCrop Denmark > DARCOF I (1996-2001) > III Development of organic plant production systems Denmark > DARCOF II (2000-2005) > IV.1 (EXUNIT) Experimental units for research in organic farming systems Denmark > AU - Aarhus University > Faculty of Science and Technology > Department of Agroecology Denmark > CROPSYS International Conferences > 2022: Studies of agroecology in long-term organic and conventional cropping systems Denmark > Organic RDD 2 > RowCrop |
| Deposited By: | Christensen, Jytte |
| ID Code: | 44206 |
| Deposited On: | 28 Jun 2022 08:01 |
| Last Modified: | 28 Jun 2022 08:01 |
| Document Language: | English |
| Status: | Unpublished |
| Refereed: | Not peer-reviewed |
| Additional Publishing Information: | An international scientific workshop to celebrate the 25 years anniversary of the long-term experiment on organic arable crop rotations |
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