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Management of nitrogen and sulfur in arable cropping systems integrating anaerobic digestion

Fontaine, Doline (2021) Management of nitrogen and sulfur in arable cropping systems integrating anaerobic digestion. PhD thesis, Aarhus University , Agroecology. .

[thumbnail of PhD thesis - Doline Fontaine_final.pdf] PDF - Published Version - English
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Within the scope of sustainable agriculture and bio-circular economy, there is a growing focus on the internal recycling of nutrients from organic residues as a crop fertilizer. Whereas nitrogen (N) is the nutrient that has the largest influence on biomass production, sulfur (S) is also an essential nutrient for plant growth that has become commonly deficient in arable cropping systems. The PhD study investigated methods including anaerobic digestion (AD) to increase N and S supply and improve their utilization in arable cropping systems. In fields in which a spring barley crop (Hordeum vulgare L.) and a leguminous cover crop were established and harvested following different strategies, the PhD study quantified the N residual effect of the belowground and harvestable aboveground biomass directly re-incorporated the following year. Results were compared to the N availability of the harvestable biomass either ensiled or ensiled and anaerobically digested. Following poor S availability in the harvestable biomass, the PhD study focused also on the recycling of S products obtained from biogas desulfurization process, including the S turnover during storage in manure, the S oxidation in soil and the subsequent S plant-availability.

EPrint Type:Thesis
Thesis Type:PhD
Agrovoc keywords:
Subjects: Crop husbandry > Production systems
Crop husbandry > Production systems > Cereals, pulses and oilseeds
Crop husbandry > Composting and manuring
Soil > Nutrient turnover
Farming Systems > Farm nutrient management
Research affiliation: Denmark
Denmark > Organic RDD 3 > NutHY
Deposited By: Fontaine, Dr Doline
ID Code:39593
Deposited On:07 Apr 2021 08:10
Last Modified:07 Apr 2021 08:10
Document Language:English
Refereed:Peer-reviewed and accepted

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