Magid, Jakob (2022) CRUCIAL -Closing the Rural-Urban Nutrient Cycle -Investigations through Agronomic Long-term experiments. 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
Discussions and developments in the last 20 years on recycling nutrientsfrom society in organic farming in Denmark. Heavy metal concentrations in sewage sludge have declined substantially over the past decades.
So far we have been unable to identify unwanted effects on soil and crops caused by recycling of societal wastes in accelerated amounts (>200 years of legal doses).
We have rather been surprised by the resilience of the soil ecosystem, and conclude that the resilience of the soil ecosystem and soil biotic communities is generally underappreciated.
The risk associated with agricultural use of Danish sewage sludge is comparable to that of pig slurry, once the EU limits for Zn and Cu addition to pig feed have been fully implemented.
Danish organic farmer organizations agree that recycling from society is preferable to using conventional straw and manure, and are working towards this, even in the case of sewage sludge in the longer term
| EPrint Type: | Conference paper, poster, etc. |
|---|---|
| Type of presentation: | Speech |
| Agrovoc keywords: | Language Value URI English rural urban relations http://aims.fao.org/aos/agrovoc/c_6709 English agronomic practices http://aims.fao.org/aos/agrovoc/c_330610 English organic fertilizers http://aims.fao.org/aos/agrovoc/c_4592 English agroecosystems http://aims.fao.org/aos/agrovoc/c_36669 English heavy metals http://aims.fao.org/aos/agrovoc/c_2223 |
| Subjects: | Crop husbandry > Crop combinations and interactions Knowledge management > Research methodology and philosophy > Systems research and participatory research |
| Research affiliation: | Denmark > Organic RDD 5 > RECONCILE Denmark > KU - University of Copenhagen International Conferences > 2022: Studies of agroecology in long-term organic and conventional cropping systems |
| Deposited By: | Christensen, Jytte |
| ID Code: | 44207 |
| 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| Status: | Unpublished |
| Refereed: | Not peer-reviewed |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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