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dc.contributor.author
Martinez, Juan Manuel
dc.contributor.author
Galantini, Juan Alberto
dc.contributor.author
Duval, Matias Ezequiel
dc.contributor.author
López, Fernando Manuel
dc.contributor.author
Iglesias, Julio Osvaldo
dc.date.available
2019-10-30T18:53:03Z
dc.date.issued
2018-03
dc.identifier.citation
Martinez, Juan Manuel; Galantini, Juan Alberto; Duval, Matias Ezequiel; López, Fernando Manuel; Iglesias, Julio Osvaldo; Estimating soil organic carbon in Mollisols and its particle-size fractions by loss-on-ignition in the semiarid and semihumid Argentinean Pampas; Elsevier B.V.; Geoderma Regional; 12; 3-2018; 49-55
dc.identifier.issn
2352-0094
dc.identifier.uri
http://hdl.handle.net/11336/87693
dc.description.abstract
Recent interest in soil quality assessment underscores the need for an accurate measurement of soil organic carbon (OC) and its labile fraction, i.e. particulate OC. The loss-on-ignition (LOI) method has been proposed as a rapid, inexpensive and accurate method for estimating OC. The objectives of this study were i) to test the LOI method for soil organic matter (SOM) and particulate organic matter (POM), and ii) to evaluate the use of an adequate conversion factor (CF) for predicting OC from organic matter (OM) in soil and different particle-size fractions in several Mollisols of the Argentinean Pampas. Several agricultural fields (140) under no-tillage were sampled before crop sowing at 0–20 cm. SOM was physically separated by wet sieving, obtaining a coarse particle-size fraction (CPF, 105–2000 μm) and a medium particle-size fraction (MPF, 53–105 μm). Organic C and OM were determined by dry combustion (DC) and by LOI in whole soil (WS) and in both particle-size fractions. The values of OC (0.7–3.6 g 100 g− 1) and OM (1.9–7.9 g 100 g− 1) varied greatly between the soils. High and significant relationships (P < 0.001) were found between the different soil fractions determined by DC and LOI, with OM (105–2000 μm):OC (105–2000 μm) (R2 = 0.94) > OM(WS):OC(WS) (R2 = 0.88) > OM(53–105 μm):OC(53–105 μm) (R2 = 0.82). These results indicated that the C content in each fraction was in the order of 45%, 50% and 41% for WS, CPF and MPF, respectively. The LOI method can predict OC in CPF (105–2000 μm) with reliable accuracy. The CF for predicting OC from OM was variable for each soil fraction considered: 2.23 for WS, 2.00 for CPF and 2.44 for MPF.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier B.V.
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CONVERSION FACTOR
dc.subject
DRY COMBUSTION
dc.subject
MOLLISOLS
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PARTICULATE ORGANIC MATTER
dc.subject.classification
Ciencias del Suelo
dc.subject.classification
Agricultura, Silvicultura y Pesca
dc.subject.classification
CIENCIAS AGRÍCOLAS
dc.title
Estimating soil organic carbon in Mollisols and its particle-size fractions by loss-on-ignition in the semiarid and semihumid Argentinean Pampas
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-10-22T17:45:50Z
dc.journal.volume
12
dc.journal.pagination
49-55
dc.journal.pais
Paises Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Martinez, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina. Universidad Nacional del Sur. Departamento de Agronomía; Argentina
dc.description.fil
Fil: Galantini, Juan Alberto. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
dc.description.fil
Fil: Duval, Matias Ezequiel. Universidad Nacional del Sur. Departamento de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
dc.description.fil
Fil: López, Fernando Manuel. Universidad Nacional del Sur. Departamento de Agronomía; Argentina
dc.description.fil
Fil: Iglesias, Julio Osvaldo. Universidad Nacional del Sur. Departamento de Agronomía; Argentina
dc.journal.title
Geoderma Regional
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S2352009417301785
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.geodrs.2017.12.004
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