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Organic residues - a resource for arable soils

Odlare, Monica (2005). Organic residues - a resource for arable soils. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880 ; 2005:71
ISBN 91-576-6970-8
[Doctoral thesis]

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An increased recirculation of urban organic residues to arable soils has several environmental benefits, but there is a need for reliable test systems to ensure that soil quality is maintained. In this thesis, soil microbial, chemical and physical properties were included in an integrated evaluation to reflect the positive and negative effects of amending arable soils with organic residues. Efficient statistical tools and methods to describe intrinsic spatial variation are important when evaluating soil data. A new method was developed, combining near infrared reflectance (NIR) spectroscopy with principal component analysis (PCA). The first principal component (PC1) of NIR data described spatial soil variation better than the conventional soil variables total carbon, clay content and pH. A long-term field trial was established in which the soil was amended annually with organic residues (compost, biogas residues, sewage sludge) and fertilizers (pig manure, cow manure and mineral fertilizer, NPS). Annual measurements of soil and crop quality as well as yield revealed that biogas residues performed best among the organic residues. It improved several important microbiological properties, such as substrate-induced respiration (SIR) and potential ammonium oxidation (PAO), and it compared well with mineral fertilizer in terms of grain quality and harvest yield. Altogether, the results from the field trial showed no negative effects from any of the organic residues. Short- and moderately long-term effects of wood ash and compost on potential denitrification activity (PDA) and PAO were evaluated in a laboratory incubation experiment. Wood ash application had a profound toxic effect on PDA both in the short- and long-term. This toxic effect was mitigated when compost was added to the soil.

Authors/Creators:Odlare, Monica
Title:Organic residues - a resource for arable soils
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :September 2005
Number of Pages:51
ALLI. Odlare, M., Svensson, K. & Pell, M. 2005. Near infrared reflectance spectroscopy for assessment of spatial soil variation in an agricultural field. Geoderma 126, 193-202. II. Svensson, K., Odlare, M. & Pell, M. 2004. The fertilizing effect of compost and biogas residues from source separated household waste. J. Agric. Sci. 142, 461-467. III. Odlare, M., Pell, M. & Svensson, K. 2005. Changes in soil chemical and microbiological properties after application of compost, biogas residues and sewage sludge – a field experiment. (Manuscript) IV. Odlare, M. & Pell, M. 2005. Effect of wood ash and compost on nitrification and denitrification in soil. (Manuscript)
Place of Publication:Uppsala
ISBN for printed version:91-576-6970-8
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:F Plant production > F04 Fertilizing
Subjects:Not in use, please see Agris categories
Agrovoc terms:soil biology, fertilizers, wastes, sewage sludge, composts, field experimentation, methods
Keywords:biogas residues, compost, field experiment, geostatistics, NIR, PCA, sewage sludge, soil microbiology, spatial variation, wood ash
Permanent URL:
ID Code:913
Department:(NL, NJ) > Dept. of Microbiology (until 161231)
Deposited By: Monica Odlare
Deposited On:06 Sep 2005 00:00
Metadata Last Modified:02 Dec 2014 10:08

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