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dc.contributor.author
Bondaruk, Viviana
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dc.contributor.author
Lezama, Felipe
dc.contributor.author
del Pino, Amabelia
dc.contributor.author
Piñeiro, Gervasio
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dc.date.available
2022-09-13T17:47:49Z
dc.date.issued
2020-11
dc.identifier.citation
Bondaruk, Viviana; Lezama, Felipe; del Pino, Amabelia; Piñeiro, Gervasio; Overseeding legumes in natural grasslands: Impacts on root biomass and soil organic matter of commercial farms; Elsevier; Science of the Total Environment; 743; 140771; 11-2020; 1-9
dc.identifier.issn
0048-9697
dc.identifier.uri
http://hdl.handle.net/11336/168580
dc.description.abstract
Overseeding legumes in natural grasslands coupled with phosphorous fertilization are management practices oriented to increase forage production and quality, and to restore nutrient losses generated by livestock. Several studies show increases in forage due to this practice, but less is known about impacts on soil fertility and carbon sequestration. The objective of this study was to evaluate under real farm conditions changes in root C and N stocks and soil organic carbon (SOC) and nitrogen (SON) stocks in two different soil pools, the particulate organic matter (POM) and the mineral associated organic matter (MAOM), after the introduction in natural grasslands of a legume species, Lotus subbiflorus cv. “El Rincón”, accompanied with phosphorous fertilization. We also evaluated changes in the natural abundance of 15N and 13C in soils and roots to understand changes in N fixation and species composition. We selected 12 adjacent paddocks of natural grasslands (NG) and natural grasslands overseeded with legumes and fertilized with phosphorous (NGLP) located in commercial farms in Uruguay. We found that overseeding legumes increased root C and N stocks and SOC and SON stocks in some farms but decreased them in others. On average, no significant differences arose between NGLP and NG paddocks in total stocks of 0–30 cm depth. However, higher C stocks were observed in POM of NGLP paddocks in 0–5 cm layer and lower contents in 5–10 cm layer indicating a change in the vertical distribution of C in POM. Changes in δ15N suggest that atmospheric N is being fixed by legumes in NGLP paddocks, but not translated into more N or C stocks in the MAOM fraction, probably due to high N losses promoted by cattle grazing. Our work suggests that carbon sequestration can be achieved after legumes introduction in grazed natural grasslands but will depend on grazing management practices.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
GRASSLANDS
dc.subject
ISOTOPES
dc.subject
LOTUS SUBBIFLORUS
dc.subject
ROOT BIOMASS
dc.subject
SOIL ORGANIC MATTER
dc.subject.classification
Ciencias del Suelo
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dc.subject.classification
Agricultura, Silvicultura y Pesca
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dc.subject.classification
CIENCIAS AGRÍCOLAS
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dc.title
Overseeding legumes in natural grasslands: Impacts on root biomass and soil organic matter of commercial farms
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-09-07T15:17:08Z
dc.journal.volume
743
dc.journal.number
140771
dc.journal.pagination
1-9
dc.journal.pais
Países Bajos
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dc.description.fil
Fil: Bondaruk, Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
dc.description.fil
Fil: Lezama, Felipe. Universidad de la Republica. Facultad de Agricultura; Uruguay
dc.description.fil
Fil: del Pino, Amabelia. Universidad de la República; Uruguay
dc.description.fil
Fil: Piñeiro, Gervasio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
dc.journal.title
Science of the Total Environment
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0048969720342959
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.scitotenv.2020.140771
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