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Phosphorus Retention Materials In Outdoor Laying Hen Paddocks For Reduced Environmental Impact And Increased Nutrient Use Efficiency

Aronsson, Helena; Hellstrand, Ebba; Salomon, Eva; Wahlund, Lotten; Odelros, Åsa and Lovang, Malin (2021) Phosphorus Retention Materials In Outdoor Laying Hen Paddocks For Reduced Environmental Impact And Increased Nutrient Use Efficiency. Paper at: Organic World Congress 2021, Science Forum: 6th ISOFAR Conference co-organised with INRA, FiBL, Agroecology Europe, TP Organics and ITAB, Rennes, France, 8 - 10 September, 2021. [Completed]

[thumbnail of OWC2020-SCI-371.pdf] PDF - English
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Summary

This study investigated phosphorus (P) retention materials of sand and limestone outside houses in paddocks for organic laying hens, as a measure to retain P and reduce leaching. When manure P, accumulated in the materials during 6 months, was exposed to rain simulations in a lysimeter study, P concentrations in drainage water were high from all treatments (58-136 and 130-197 mg L-1 of PO4-P and total-P respectively). On average, 14% of the manure P, captured in the materials was leached after 100 mm of simulated rainfall. The conclusion is that these materials may efficiently retain P during the outdoor season (May to October), but in order to reduce the risk of losses to waters during the following winter they need to be removed from the paddocks, preferably to arable fields. The materials can be regarded as potential P fertilizers and may thereby combine increased P use efficiency and environmental performance of organic outdoor poultry systems.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:egg production, lysimeter, P adsorption, P leaching
Subjects: Animal husbandry
Farming Systems
Research affiliation: International Conferences > 2021: Organic World Congress, Science Forum: 6th ISOFAR Conference co-organised with INRA, FiBL, Agroecology Europe, TP Organics and ITAB > Ecological approaches to systems' health
Sweden
Deposited By: rey, m. frederic
ID Code:42154
Deposited On:07 Sep 2021 13:12
Last Modified:07 Sep 2021 13:12
Document Language:English
Status:Unpublished
Refereed:Peer-reviewed and accepted
Additional Publishing Information:A book of abstracts of papers of the Science Forum at the Organic World Congress 2021, September 8-10, Online and on-site in Rennes, France '6th ISOFAR Conference co-organised with INRA, FiBL, Agroecology Europe, TP Organics and ITAB' has been published

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