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dc.contributor.author
Alvarez, Roberto
dc.date.available
2024-04-17T12:07:51Z
dc.date.issued
2024-04
dc.identifier.citation
Alvarez, Roberto; A quantitative review of the effects of residue removing on soil organic carbon in croplands; Elsevier Science; Soil & Tillage Research; 240; 4-2024; 1-8
dc.identifier.issn
0167-1987
dc.identifier.uri
http://hdl.handle.net/11336/233243
dc.description.abstract
Proper management practices can turn soils into sinks for atmospheric carbon and mitigate global warming. The objective of this study was to determine how crop residue management affects soil organic carbon (SOC) content in croplands. Data were collected from 323 field experiments evaluating the effect of residue management on SOC. From these, 609 paired data of SOC stocks with residue retained or removed (harvested or burned) were extracted. Meta-analytic methods were used to analyze the data using the response ratio (RR) as an effect size. Carbon input data to the soil from roots and aboveground residue were also extracted from 46 experiments that allowed residue carbon retention efficiency to be calculated. The residue harvest produced a mean decrease in the SOC stock of 11% in the topsoil (≤ 30 cm). This drop was only 5% when the residue was burned. Topsoil and subsoil SOC stock were equally impacted by residue management. In warm areas the relaive drop in SOC due to residue harvest was greater than in cold regions (13% vs. 8%). Likewise, the relative impact of residue harvest is greater in poor SOC soils. In contrast, water availability, soil texture, nitrogen fertilization, residue location, experiment duration and residue type did not significantly affect the RR. The annualized SOC change was greater during the first 10 years of the experiments and then decreased. Residue harvest or retaining had only a minimal impact on root carbon input to the soil, but led to a 6-fold difference in aboveground carbon input. The carbon retention efficiency of aboveground residue decreases over time, dropping from an average of ca. 25% in experiments of less than 10 years to ca. 11% in long (>20 yr) experiments. The results showed that the practice of residue retention is important in all soils to maintain the SOC level, but especially in soils from warm regions and in poor SOC soils. The impact of residue harvest is not only confined to the SOC pool in the surface layer but also impacts on the deep soil layers.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Meta-analysis
dc.subject
Management practices
dc.subject
Soil carbon sequestration
dc.subject
Carbon retention efficiency
dc.subject.classification
Agricultura
dc.subject.classification
Agricultura, Silvicultura y Pesca
dc.subject.classification
CIENCIAS AGRÍCOLAS
dc.title
A quantitative review of the effects of residue removing on soil organic carbon in croplands
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-04-15T14:59:37Z
dc.journal.volume
240
dc.journal.pagination
1-8
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Alvarez, Roberto. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Cátedra de Fertilidad y Fertilizantes; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Soil & Tillage Research
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0167198724000990
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.still.2024.106098
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