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Climate effects of recycled fertilizers and biochar: emissions of nitrous oxide, methane and ammonia in a field experiment

Norah, Efosa; Krause, Hans-Martin; Bünemann, Else K.; Hüppi, Roman; Häni, Christoph and Six, Johan (2018) Climate effects of recycled fertilizers and biochar: emissions of nitrous oxide, methane and ammonia in a field experiment. Poster at: Annual ETH PhD Symposium, Zurich, Swirtzerland, October 15, 2018. [Completed]

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Summary

Background
Nitrogen (N) fertilizers are essential for crop production. Farmyard manure and slurry traditionally constitute about half of the total N inputs into crop production in Switzerland. Recycled fertilizers such as biogas slurry, liquid digestates and compost enable simultaneous energy production and closing of nutrient cycles. There is evidence that recycled fertilizers can help to increase N use efficiencies and to improve N supply in organic farming. Biochar amendment has shown a potential to mitigate soil greenhouse gas (GHG) emissions, in particular nitrous oxide (N2O) emissions. Here, we combine one of the liquid recycled fertilizer treatments with biochar. In a 2.5-years on-farm experiment, we quantify GHG emissions and further gaseous N-losses via ammonia (NH3) emissions.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:climate, field trails, fertility, emissions, recycled fertilizers, biochar
Subjects: Environmental aspects > Air and water emissions
Soil
Research affiliation: Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Soil Sciences
Switzerland > ETHZ - Agrarwissenschaften
Switzerland > HAFL
Deposited By: Forschungsinstitut für biologischen Landbau, FiBL
ID Code:33934
Deposited On:12 Oct 2018 08:13
Last Modified:12 Oct 2018 08:13
Document Language:English
Status:Unpublished
Refereed:Submitted for peer-review but not yet accepted

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