Butterbach-Bahl, Klaus (2022) Unknowns about N-(C-) cycling in agroecosystems. 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
At all scales, ecosystem N cycling and fate of added N not well constrained
The denitrification challenge (where? When? Magnitude? Product ratios? Plant effects?)
Not getting denitrification right hampers
understanding of environmental N losses, incl. N2O fluxes
Understanding of soil C:N dynamics (ΔN, ΔC:N)
Development and testing of biogeochemical models
Development of strategies to increase NUE
…..
Various approaches for quantifying denitrification none of those are “cheap”
Only few sites estimated total N budgets (incl. N flow components)
Long-term trials (!) needed and may include establishment of detailed N balances
| EPrint Type: | Conference paper, poster, etc. |
|---|---|
| Type of presentation: | Speech |
| Agrovoc keywords: | Language Value URI English agroecosystems http://aims.fao.org/aos/agrovoc/c_36669 English nitrogen cycle http://aims.fao.org/aos/agrovoc/c_27938 English nitrogen balance http://aims.fao.org/aos/agrovoc/c_eb390701 |
| Subjects: | Crop husbandry > Crop combinations and interactions Knowledge management > Research methodology and philosophy > Systems research and participatory research |
| Research affiliation: | Denmark > AU - Aarhus University > Faculty of Science and Technology > Department of Agroecology International Conferences > 2022: Studies of agroecology in long-term organic and conventional cropping systems |
| Deposited By: | Christensen, Jytte |
| ID Code: | 44214 |
| Deposited On: | 28 Jun 2022 08:02 |
| Last Modified: | 28 Jun 2022 08:02 |
| 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| Status: | Unpublished |
| Refereed: | Not peer-reviewed |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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