A - Papers appearing in refereed journals
Grilo, J., Bol, R., Dixon, E. R., Chadwick, D. R. and Fangueiro, D. 2011. Long-term release of carbon from grassland soil amended with different slurry particle size fractions: a laboratory incubation study. Rapid Communications in Mass Spectrometry. 25 (11), pp. 1514-1520. https://doi.org/10.1002/rcm.5008
Authors | Grilo, J., Bol, R., Dixon, E. R., Chadwick, D. R. and Fangueiro, D. |
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Abstract | Application of animal manure to agricultural soils enhances both native soil carbon (C) and overall (native soil C and added C) respiration. CO2 effluxes were measured in a laboratory incubation study for 1465 days after the application of different slurry fractions (>2000, 425-2000, 250-425, 150-250, 45-150 and <45 mu m) to a grassland soil. The slurry-derived C present in the soil was traced using the natural abundance delta C-13 method. We used two kinetic (single and two pool) models to fit the experimental data and to test the model validity with respect to long-term data sets. Mean residence times (MRTs) of the particle size based slurry-C fractions were estimated using these models and a linear C-13 natural abundance based approach. The results showed that slurry-C degradation in soil over time varied between the different particle size based slurry treatments. The two kinetic soil-C models were successful to predict medium-to long-term carbon release from soil amended with animal slurry. The estimated MRTs did vary between the linear (3.8-5.6 years) and non-linear based (0.8-3.8 years) (model) approaches. Slurry-derived C could still be (isotopically) detected in the soil 4 years after slurry application using the natural abundance delta C-13 method. This suggests that it may take a decadal timescale or longer before the entire amount of C introduced through whole slurry amendments to grassland soils is fully dissipated. Copyright (C) 2011 John Wiley & Sons, Ltd. |
Keywords | Biochemical Research Methods; Chemistry, Analytical; Spectroscopy |
Year of Publication | 2011 |
Journal | Rapid Communications in Mass Spectrometry |
Journal citation | 25 (11), pp. 1514-1520 |
Digital Object Identifier (DOI) | https://doi.org/10.1002/rcm.5008 |
PubMed ID | 21594924 |
Open access | Published as non-open access |
Funder project or code | North Wyke Research (NWR) |
ISSN | 09514198 |
0951-4198 | |
Publisher | Wiley |
Permalink - https://repository.rothamsted.ac.uk/item/8q957/long-term-release-of-carbon-from-grassland-soil-amended-with-different-slurry-particle-size-fractions-a-laboratory-incubation-study
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