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Effects of fertilisation with biogas residues on crop yield, soil microbiology and greenhouse gas emissions

recycling of plant nutrients from bioenergy production

Abubaker, Jamal (2012). Effects of fertilisation with biogas residues on crop yield, soil microbiology and greenhouse gas emissions. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2012:46
ISBN 978-91-576-7682-5
[Doctoral thesis]

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Abstract

The amount of residues generated by biogas production has increased dramatically due to worldwide interest in using renewable energy. Biogas residues (BRs) originate from anaerobic degradation of different types of rural and urban organic wastes and have been proposed as organic fertilisers because of their high content of ammonium and other valuable macro- and micro-nutrients. However, application of BRs to agricultural soils may be accompanied by environmental risks, since they may contain heavy metals and organic pollutants. Therefore the effects of BRs on crop production and on the soil ecosystem and environment urgently need to be investigated before their wider use. This thesis evaluated and compared different types of BRs against cattle slurry, pig slurry, compost and mineral fertiliser with respect to their (1) ability to provide plants with necessary nutrients, (2) impact on the soil microbial ecosystem and (3) effects on emissions of the greenhouse gas nitrous oxide (N₂O). The results from short-term laboratory experiments and a long-term field trial showed that BRs increased crop yield to the same extent or more than conventional mineral fertiliser and compost, but less than pig slurry. BRs generated from source-separated organic household waste had a tendency to give higher crop yield and soil microbial activities than other BRs. BRs had no general negative effect on soil respiration, but substrate-induced respiration decreased significantly in organic soil on addition of BRs. Although all BRs initially inhibited potential ammonium oxidation and potential denitrification activity, no long-term negative effects were detected. BRs stimulated ammonium assimilation, which can temporarily decrease nitrogen availability to the plant. Furthermore, the bacterial community structure in the sandy soil was altered by BRs and cattle slurry, but no significant change was seen in the community structure of clay and organic soil. Application of BRs and animal slurry increased N₂O emissions, but the total losses and flux patterns were affected by fertiliser type and soil type. In conclusion, the fertiliser value of BRs should be regarded as high and they apparently have no long-term adverse effects on soil microbial functions and structures. Thus the problematic amounts of residues associated with expansion of biogas production could be turned to advantage, as these residues seem to be safe and competitive fertilisers.

Authors/Creators:Abubaker, Jamal
Title:Effects of fertilisation with biogas residues on crop yield, soil microbiology and greenhouse gas emissions
Subtitle:recycling of plant nutrients from bioenergy production
Series/Journal:Acta Universitatis agriculturae Sueciae (1652-6880)
Year of publishing :16 April 2012
Volume:2012:46
Number of Pages:79
Papers/manuscripts:
NumberReferences
I.Abubaker, J., Risberg, K. & Pell, M. (2012). Biogas residues as fertilisers - effects on wheat growth and soil microbial activities. Applied Energy 99, 126-134.
II.Odlare, M., Arthurson, V., Pell, M., Svensson, K., Nehrenheim, E. & Abubaker, J. (2011). Land application of organic waste - Effects on the soil ecosystem. Applied Energy 88, 2210-2218.
III.Abubaker, J., Risberg, K., Jönsson, E., Pell, M., Dahlin, S. & Cederlund, H. Short-term effects of biogas residue and pig slurry application on soil microbial activity (Submitted).
IV.Abubaker, J., Cederlund, H., Pell, M. & Arthurson, V. Bacterial community structures and microbial activities of different soils amended with biogas residues and cattle slurry (Submitted).
V.Abubaker, J., Odlare, M. & Pell, M. Nitrous oxide emissions from different soil types amended with biogas residues and cattle slurry (Submitted).
VI.Odlare, M., Abubaker, J., Lindmark, J., Pell, M., Thorin, E. & Nehrenheim, E. (2012). Emissions of N2O and CH4 from agricultural soils amended with two types of biogas residues. Biomass and Bioenergy 44, 112-116.
Place of Publication:Uppsala
Publisher:Dept. of Microbiology, Swedish University of Agricultural Sciences
Associated Programs and Other Stakeholders:SLU - Research Areas for the Future > Future Urban Sustainable Environment (FUSE)
SLU - Agricultural Sciences for Global Development > Land use and climate change
ISBN for printed version:978-91-576-7682-5
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:F Plant production > F04 Fertilizing
P Natural resources > P01 Nature conservation and land resources
P Natural resources > P35 Soil fertility
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Soil Science
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 405 Other Agricultural Sciences > Renewable Bioenergy Research
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 405 Other Agricultural Sciences > Environmental Sciences related to Agriculture and Land-use
Agrovoc terms:biogas, residues, bioenergy, waste management, nutrients, fertilizer application, crop yield, soil microorganisms, nitrogen oxides, pollutants, soil types
Keywords:Animal manure, Bacterial community structure, Biogas residues, Crop yield, Microbial activity, Nitrous oxide emission, Soil type
URN:NBN:urn:nbn:se:slu:epsilon-e-581
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-581
ID Code:8983
Department:(NL, NJ) > Dept. of Microbiology (until 161231)
Deposited By: Jamal Abubaker
Deposited On:23 Aug 2012 12:28
Metadata Last Modified:02 Dec 2014 10:51

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