Dynamics of soil microbial biomass and water-soluble organic c in breton l after 50 years of cropping to two rotations
TLDR
In this article, the turnover rates of biomass and water-soluble organic C (WSOC) were measured at the Breton plots where records of long-term management of a Gray Luvisolic soil are available.Abstract:
Amounts and turnover rates of biomass and water-soluble organic C (WSOC) were measured at the Breton plots where records of long-term management of a Gray Luvisolic soil are available. Plots (contr...read more
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Influence of lime, fertilizer and manure applications on soil organic matter content and soil physical conditions: A review
R.J. Haynes,Ravi Naidu +1 more
TL;DR: The effects of lime, fertilizer and manure applications on soil organic matter status and soil physical properties are of importance to agricultural sustainability as mentioned in this paper, and there is a need to study these relationships on existing long-term liming trials.
Journal ArticleDOI
Ratios of microbial biomass carbon to total organic carbon in arable soils
TL;DR: A comparative regression analysis of permanent monoculture plots with continuous crop rotation plots showed both to be highly significantly different at the P = 0.001 level: the regression line of continuous crop rotations shows a steeper slope, suggesting that a higher concentration of microbial carbon is characteristic of the crop rotation.
Journal ArticleDOI
SOM fractionation methods: Relevance to functional pools and to stabilization mechanisms
Margit von Lützow,Ingrid Kögel-Knabner,Klemens Ekschmitt,Heinz Flessa,Georg Guggenberger,Egbert Matzner,Bernd Marschner +6 more
TL;DR: In this article, the SOM fractions obtained with such operational fractionation procedures are described in terms of their pool sizes, chemical properties, and turnover rates, and the main objective is to evaluate these operationally defined fractions with respect to their suitability to describe functional SOM pools that could be used to parameterize SOM turnover models.
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A comparative assessment of factors which influence microbial biomass carbon and nitrogen levels in soil
TL;DR: Relationship with soil chemical factors and macroclimate and global distribution of microbial biomass are studied.
Journal ArticleDOI
Hot-water extractable carbon in soils: a sensitive measurement for determining impacts of fertilisation, grazing and cultivation
TL;DR: Using pre-established trial sites on allophanic soils, the impacts of long to medium-term pastoral management practices, such as fertilisation and grazing intensity, on a range of soil biological and biochemical properties; hot water-extractable C (HWC), water-soluble C (WSC), hot-water extractable total carbohydrates, microbial biomass-C and N and mineralisable N These properties were examined for their usefulness as soil quality indicators responding to changes in the rhizosphere caused by management practices as discussed by the authors.
References
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The effects of biocidal treatments on metabolism in soil—V: A method for measuring soil biomass
D. S. Jenkinson,David S. Powlson +1 more
TL;DR: In this paper, a new method for the determination of biomass in soil is described, which is calculated from the difference between the amounts of CO2 evolved during incubation by fumigated and unfumigated soil.
Journal ArticleDOI
Relationships between the denitrification capacities of soils and total, water-soluble and readily decomposable soil organic matter
J.R. Burford,J. M. Bremner +1 more
TL;DR: The relationship between the denitrification capacities of 17 surface soils and the amounts of total organic carbon, mineralizable carbon, and water-soluble organic carbon in these soils was investigated in this article.
Journal ArticleDOI
Determination of kC and kNin situ for calibration of the chloroform fumigation-incubation method
R.Paul Voroney,Eldor A. Paul +1 more
TL;DR: In this article, the proportions of biomass C ( k C ) and biomass N ( k N ) mineralized during the 10 days after CHCl 3 fumigation were determined on the basis that the immobilized labelled C and N remaining in the soil at this time were present as living microbial cells and their associated metabolites.
Journal ArticleDOI
Organic carbon dynamics in grassland soils. 1. background information and computer simulation
J. A. Van Veen,Eldor A. Paul +1 more
TL;DR: In this article, the decomposition rates of 14C-labeled plant residues in different parts of the world were characterized and mathematically simulated, and the transformation rates were considered to be independent of biomass size.
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