Compared effects of long-term pig slurry applications and mineral fertilization on soil denitrification and its end products (N2O, N2)

The long-term (9 years) effect of pig slurry applications vs mineral fertilization on denitrifying activity, N2O production and soil organic carbon (C) (extractable C, microbial biomass C and total organic C) was compared at three soil depths of adjacent plots. The denitrifying activities were measu...

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Veröffentlicht in:	Biology and fertility of soils 2006-08, Vol.42 (6), p.490-500
Hauptverfasser:	Dambreville, C, Henault, C, Bizouard, F, Morvan, T, Chaussod, R, Germon, J.C
Format:	Artikel
Sprache:	eng
Schlagworte:	Agronomy. Soil science and plant productions Animal productions Animal wastes Biochemistry and biology Biological and medical sciences Biomass Carbon Chemical, physicochemical, biochemical and biological properties Computer Science Cores Denitrification Environmental Sciences fertilizer application Fundamental and applied biological sciences. Psychology gas production (biological) General agronomy. Plant production greenhouse gases Life Sciences Microbiology Mineral fertilizers nitrate nitrogen nitrogen Nitrous oxide Organic carbon Other nutrients. Amendments. Solid and liquid wastes. Sludges and slurries Physics, chemistry, biochemistry and biology of agricultural and forest soils Pig manure Slurries Soil depth soil microorganisms soil organic matter Soil science Soil-plant relationships. Soil fertility. Fertilization. Amendments Soils Swine Terrestrial animal productions Vertebrates
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Zusammenfassung:	The long-term (9 years) effect of pig slurry applications vs mineral fertilization on denitrifying activity, N2O production and soil organic carbon (C) (extractable C, microbial biomass C and total organic C) was compared at three soil depths of adjacent plots. The denitrifying activities were measured on undisturbed soil cores and on sieved soil samples with acetylene method to estimate denitrification rates under field or potential conditions. Pig slurry applications had a moderate impact on the C pools. Total organic C was increased by +6.5% and microbial biomass C by > or = 25%. The potential denitrifying activity on soil suspension was stimulated (x1.8, P
ISSN:	0178-2762 1432-0789
DOI:	10.1007/s00374-005-0040-y