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mineralisation and leaching of c from 13c labelled plant

STUDIES ON THE DECOMPOSITION OF PLANT MATERIAL IN SOIL. I.t

A new method for determining I4 C in soil is described.. Ryegrass roots and tops uniformly labelled with 14 C were allowed to decompose for 4 years in soil under field conditions. About one‐third of the labelled (ryegrass) C was left in the soil after 6 months but thereafter decomposition was much slower, about one fifth of the labelled C remaining after 4 years.

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Carbon allocation and fate in paddy soil depending on phosphorus ...

We grew rice in phosphorus (P) deficient subtropical paddy soil in a field study and used 13CO2 continuous labelling to investigate photosynthetic carbon (C) partitioning and allocation under FLOOD versus WET/DRY conditions, with and without P fertilization (80 mg P kg−1). The plants and soil were sampled after each of three WET/DRY cycles to determine 13C allocation in above- and ...

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Mineralisation and leaching of C from 13C labelled plant litter along ...

For the 13 C labelling, the seedlings were placed in a plastic tent for 10 weeks, where the atmosphere was continuously enriched with 13 CO 2 (δ 13C = +170‰ vs. Vienna-Pee Dee Belemnite (V-PDB), Air Liquide, Düsseldorf, Germany). The plants were harvested just before flowering.

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Inositol phosphates in the environment - Royal Society

In terrestrial environments, inositol phosphates are principally derived from plants and accumulate in soils to become the dominant class of organic phosphorus compounds. Inositol phosphates are also present in large amounts in aquatic environments, where they may contribute to eutrophication.

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does contact of pinus radiata slash with soil influence post

Transcription . does contact of pinus radiata slash with soil influence post

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Soil nitrogen availability and in situ nitrogen uptake by Acer rubrum L ...

The uptake of intact glycine, therefore, would be indicated by equivalent molar enrichments of 13 C: 15 N in root tissues due to the 1∶1 isotope label in the added glycine. While seedlings of Acer rubrum and Pinus palustris did take up 15 N from glycine, the absence of plant 13 C enrichment indicated that uptake of intact glycine did not occur.

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Minéralisation du carbone organique des sols - Grafiati

In a second experiment, in a growth chamber, young cucumber plants were exposed to 13C- and 15N-labelled alanine. By combining two methods, i.e., the use of Position-specific labelling (PSL) of alanine and Compound-specific isotopic analysis (CSIA) of free amino acids, we developed a novel approach allowing the study of the mechanism of the ...

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A review of biochar and soil nitrogen dynamics - 1Library

2.1. Nitrate Adsorption and Leaching . Recent research has clarified the potential role of biochars with respect to NO3− adsorption. Yao et al. [12] evaluated 13 biochar materials (sugarcane bagasse, peanut hull, Brazilian pepperwood, and bamboo that had been slowly pyrolysed at 300, 450 or 600 °C, and a hydrochar) to determine their potential to remove NO3− from solution. It was found ...

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Fine roots are the dominant source of recalcitrant plant litter in ...

Decomposition and nitrogen dynamics of 15N-labeled leaf, root, and twig litter in temperate coniferous forests journal, July 2013. ... Mineralisation of C and N from root, ... Teri C.; Kitayama, Kanehiro; Plant and Soil, Vol. 365, Issue 1-2; DOI: 10.1007/s11104-012-1365-6; Litter decomposition and organic matter turnover in northern forest ...

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Nitrogen | Free Full-Text | Communicating Nitrogen Loss ... - MDPI

Nitrogen (N) losses are a major environmental issue. Globally, crop N fertilizer applications are excessive, and N use efficiency (NUE) is low. N loss represents a significant economic loss to the farmer. NUE is difficult to quantify in real time because of the multiple chemical-biological-physical factors interacting. While there is much scientific understanding of N interactions in the ...

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CENTURY Soil Organic Matter Model Environment - Colorado State University

Plant uptake, immobilization and leaching of P (if allowed) are controlled by the size of the labile P pool. ... 3.13. Labeled C Simulation (14C and 13C) ... Simulations using the option for 13C give a constant label to plant material based on the value of DEL13C in the crop.100 and tree.100 files. This option will primarily be of use to follow ...

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Microbial immobilisation and turnover of 13C labelled substrates in two ...

These averages were found under field and laboratory conditions, in both controls and substrate amendments. 13 C data of the laboratory soils showed that only 45-50% of the added glucose could be retrieved up to 2 d after addition. Most of the glucose added seemed to be mineralised and lost as CO 2 shortly after addition.

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CorpusUL: Minéralisation et prélèvement direct de l'azote organique ...

In a second experiment, in a growth chamber, young cucumber plants were exposed to 13C- and 15N-labelled alanine. By combining two methods, i.e., the use of Position-specific labelling (PSL) of alanine and Compound-specific isotopic analysis (CSIA) of free amino acids, we developed a novel approach allowing the study of the mechanism of the ...

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Phosphate leaching from soil to water: 150 years of getting it wrong!

Variable responses of the soil microbial biomass to trace concentrations of 13C-labelled glucose, using 13C-PLFA analysis. ... J. C. and Brookes, P. C. 2008. Nitrogen mineralisation along a pH gradient of a silty loam UK soil. ... The use of cover crops in cereal-based cropping systems to control nitrate leaching in SE England. Plant and Soil ...

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Microbial metabolism mediates interactions between dissolved organic ...

By tracing the 13C label in the organic and inorganic carbon pools allowed us to assess the mineralization and retention of the amino acids. Loss of amino acids and DOM was then estimated via mass balance, from which we infer the relative importance of organo-mineral interactions for carbon fluxes in our experimental systems.

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Pyrolysis temperature and soil depth interactions determine PyC ...

Mar 11, 2021The U.S. Department of Energy's Office of Scientific and Technical Information

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The contribution of fresh litter to dissolved organic carbon leached ...

Summary The relative contributions of litter and humified organic matter as the source of dissolved organic carbon (DOC) leached from organic layers of forest soils are poorly understood. In the present investigation, 13C labelled spruce litter was used to study the role of recent litter in the leaching of DOC from a coniferous forest floor in southern Sweden, while litterbags were used to ...

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The Regional Institute - Nitrogen mineralisation from shoot and root ...

Net mineralisation or immobilisation of soil nitrogen (N) was related to the carbon (C) to N ratio (C:N) of added residues of shoots or roots of 10 crop and pasture species. Net mineralisation increased as C:N decreased below 18, and for most residues net immobilisation increased as C:N increased above 18.

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Tillage and nitrogen fertilization enhanced belowground carbon ... - Nature

where 13 C L,t is the 13 C atom% of a sample from the labelled micro-plots at time t (t = two, nine, 15, 30, or 45) and 13 C NL is the 13 C atom% of the corresponding sample from the non-labelled ...

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Incorporation of shoot versus root-derived 13C and 15N into mineral ...

Incorporation of shoot versus root-derived 13 C and 15 N into mineral-associated organic matter fractions: results of a soil slurry incubation with dual-labelled plant material J. M. Lavallee, R. T. Conant, E. A. Paul & M. F. Cotrufo Biogeochemistry 137, 379-393 ( 2018) Cite this article 1860 Accesses 27 Citations 10 Altmetric Metrics Abstract

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C and N availability affects the 15N natural abundance of the soil ...

The availability of C and N to the soil microbial biomass is an important determinant of the rates of soil N transformations. Here, we present evidence that changes in C and N availability affect the...

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(PDF) Mineralisation, leaching and stabilisation of 13C-labelled leaf ...

Using 13C-labelled leaf (isotope ratio (δ13C) = −40.8‰) and twig litter (δ13C = −38.4‰), we tracked down the litter-derived C in the soil respiration, in the dissolved organic C (DOC) and in the...

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CV HAL : Publications de Bernard Nicolardot

E. Justes, B. Mary, Bernard Nicolardot. Quantifying and modelling C and N mineralization kinetics of catch crop residues in soil: parameterization of the residue decomposition module of STICS model for mature and non mature residues. Plant and Soil, Springer Verlag, 2009, 325 (1-2), pp.171 - 185. 10.1007/s11104-009-9966-4 . hal-01862342

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CSIRO PUBLISHING | Soil Research

The total amount of dissolved organic carbon (DOC) leached increased ( P < 0.001) only in the soils that had been air-dried before rewetting (3.8 and 5.3 mg g -1 soil C, for arable and grassland respectively), while among the other θg treatments differences were relatively small (1.6-2.4 mg g -1 soil C).

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Carbon allocation and fate in paddy soil depending on phosphorus ...

We grew rice in phosphorus (P) deficient subtropical paddy soil in a field study and used 13CO2 continuous labelling to investigate photosynthetic carbon (C) partitioning and allocation under FLOOD versus WET/DRY conditions, with and without P fertilization (80 mg P kg-1). The plants and soil were sampled after each of three WET/DRY cycles to determine 13C allocation in above- and belowground ...

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Yakov Kuzyakov -

Sep 2, 2022priming effect decomposition 14C 13C 15N plant residues glucose microbial biomass. tracer labeling labelling agriculture rhizosphere rhizodeposition soil plant interactions . ... greater contribution of leaching loss than N 2 O emissions. Journal of Geophysical Research - Biogeosciences 124 (3), 494-508.

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UZH - Department of Geography - Publications

Journal Article. Felipe-Lucia, María R; Soliveres, Santiago; Penone, Caterina; Manning, Peter; van der Plas, Fons; Boch, Steffen; Prati, Daniel; Ammer, Christian ...

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Decomposition and stabilisation of Norway spruce needle-derived ...

The measured δ 13 C signal of the spruce needles was +43.4‰ and the organic carbon concentration of the needles 44.99%. The design of the mesocosms in the field was as described in Maestrini et al. ( 2014 ). Mesocosms (10.2 cm diam., 20 cm long PVC tubes, open at both ends) were inserted into the soil without disturbing its structure.

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Literature Review of The Effectiveness of - Gov.uk

Plant-based measures to reduce nitrate leaching 43. 3.3.1. Select the most suitable grasses to maximise N uptake 43. ... For long-term grassland, however, mineralisation and N leaching are lowest for pastures of intermediate age. Older swards will also contain a higher proportion of weed grasses and broad-leaved weeds, which are likely to be ...

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Understanding and managing nitrogen nutrition in grapevine: a review ...

Jan 4, 2021Mineral N, however, represents only a small fraction of total soil N, and its amount varies significantly depending on the rates of N mineralisation, plant N uptake and soil N losses (i.e., leaching, denitrification, erosion and gaseous emission). The size of the mineral N pool can vary from a few tenths of kilograms to a few hundreds of kg/ha.

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Bodé | Ghent University - Academia.edu

The results indicate an increased recalcitrance and decreased mineralisation of soil organic carbon with elevation driven by decreasing soil temperature and pH. Subsequently, after two years of in situ warming (0.9 to 2.8 °C), specific heterotrophic soil organic carbon respiration tends to be lower for warmed as compared to control soil.

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Phil Ineson - Academia.edu

Leaching of dissolved organic carbon (DOC) was significantly enhanced by C. sphagnetorum, with the greatest effect being found in the upper, 0-6 cm, soil layers. The ratio of DOC to dissolved organic nitrogen (DON) in the leachate decreased in faunated systems, indicating that the enchytraeids were mobilizing carbon from organic matter with a ...

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Competition for S-containing amino acids between rhizosphere ...

Jun 23, 2021Plant S deficiency is common, but the role of S-containing amino acids such as cysteine in plant S uptake is unknown. We applied 14C-, 35S-, 13C-, and 15N-labelled cysteine to wheat and oilseed rape rhizospheres and traced the plants' elemental uptake. Both plants absorbed 0.37-0.81% of intact cysteine after 6 h with no further increase after 24 h. They absorbed 1.6-11.5% 35S and 12.3 ...

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Publikationen - Georg-August-Universität Göttingen

(339) LEMANSKI, K., SCHEU, S. (2014) Incorporation of 13C labelled glucose into soil microorganisms of grassland: effects of fertilizer addition and plant functional group composition. Soil Biology and Biochemistry 69, 38-45

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CSIRO PUBLISHING | Soil Research

Planting of Pinus radiata D. Don in previously grazed pastures is a common land-use change in New Zealand. Although carbon (C) accumulates relatively rapidly in the trees, there have been no studies of the annual effect on soil C content during the early years of establishment. Here, we study soil properties under P. radiata and pasture each year over 11 years after P. radiata was planted into ...

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Rhizodeposition of : Short‐term carbon budget and composition

Rhizodeposits in the leachate of the first 2 h after labeling were identified by high‐pressure liquid chromatography (HPLC) and pyrolysis-field ionization mass spectrometry (Py‐FIMS). Leachate from soil-sand contained more 14 C than from soil (0.6% vs. 0.4%) and more HPLC‐detectable carboxylates (4.36 vs. 2.69 μM), especially acetate and lactate.

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(PDF) Influence of changes in land use and earthworm activities on ...

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Adjunct Professor Ram Dalal AM - UQ Researchers

Professor Ram Dalal is a Professor in the School of Agriculture and Food Science at the University of Queensland, Brisbane, Australia. He has contributed significantly to create awareness in the farming, scientific and general community to the seriousness and insidious nature of soil degradation. As a consequence, restorative practices for ...

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Peter Högberg - Academia.edu

Peter Högberg studies Transaction Costs, Forest Management, and Operational Research.

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Amino acids as a nitrogen source in temperate upland grasslands: the ...

Amino acids as a nitrogen source in temperate upland grasslands: the use of dual labelled (13C, 15N) glycine to test for direct uptake by dominant grasses. Rapid Communications in Mass Spectrometry. 14, pp. 1351-1355. Fertilizer P-derived uranium continues to accumulate at Rothamsted long-term experiments A - Papers appearing in refereed journals

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