Organic C Fractions in Topsoil under Different Management Systems in Northeastern Brazil

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dc.contributor.authorGualberto, Adriano Venicius Santana
dc.contributor.authorde Souza, Henrique
dc.contributor.authorSagrilo, Edvaldo
dc.contributor.authorAraujo, Ademir Sergio Ferreira
dc.contributor.authorMendes, Lucas William
dc.contributor.authorde Medeiros, Erika Valente
dc.contributor.authorPereira, Arthur Prudêncio de Araujo
dc.contributor.authorda Costa, Diogo Paes
dc.contributor.authorVogado, Renato Falconeres
dc.contributor.authorda Cunha, João Rodrigues
dc.contributor.authorTeixeira, Marcos Lopes
dc.contributor.authorLeite, Luiz Fernando Carvalho
dc.date.accessioned2023-03-29T03:24:53Z
dc.date.available2023-03-29T03:24:53Z
dc.date.issued2023-02-05
dc.description© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). The Version of Scholarly Record of this Article is published in Soil Systems, 2023, available online at: https://www.mdpi.com/2571-8789/7/1/11 . Keywords: Cerrado; no-tillage; soil quality; oxisols; soil organic carbon.
dc.description.abstractThe conversion from native forest to other land-use systems can decline the soil organic carbon (SOC) in tropical soils. However, conservationist management could mitigate SOC losses, promoting the functioning and stability of agricultural soils. This study aimed to address the influence of conversion from native forest to different land-use systems on SOC fractions in Northeastern Brazil. Topsoil soil samples were collected in areas under pasture (PAS), no-tillage (NT1 and NT2), eucalyptus (EUC), and native forests of Cerrado in Northeastern, Brazil. Total organic C, microbial biomass (MBC), particulate (POC), and mineral-occluded organic C (MOC), as well as fulvic acids (C-FA), humic acids (C-HA), and humin (C-HUM) fractions were accessed. The results showed that land conversion maintained similar levels of humic fractions and total organic carbon (TOC) stocks in the PAS, NT1, NT2, and EUC as compared to native Cerrado. Soils with the input of permanent and diverse fresh organic material, such as NT2, PAS, and EUC, presented high levels of MBC and POC, and the lowest C-FA:TOC and C-HA:TOC ratios. The land conversion to agricultural systems that include cropping rotations associated with pasture species such as Mombasa grass and eucalyptus prevents topsoil losses of active C compartments in the Cerrado of the Brazilian Northeast. It suggests that sustainable and conservationist management should be emphasized to maintain and improve the status of soil organic C.
dc.description.sponsorshipThis research was funded by Empresa Brasileira de Pesquisa Agropecuária (Embrapa), grant number 22.13.11.004.00.03.
dc.identifier.citationGualberto, A.V.S.; de Souza, H.A.; Sagrilo, E.; Araujo, A.S.F.; Mendes, L.W.; de Medeiros, E.V.; Pereira, A.P.d.A.; da Costa, D.P.; Vogado, R.F.; da Cunha, J.R.; et al. Organic C Fractions in Topsoil under Different Management Systems in Northeastern Brazil. Soil Syst. 2023, 7, 11. https://doi.org/10.3390/ soilsystems7010011
dc.identifier.otherhttps://doi.org/10.3390/ soilsystems7010011
dc.identifier.urihttps://hdl.handle.net/20.500.14096/305
dc.language.isoen
dc.publisherMDPI
dc.titleOrganic C Fractions in Topsoil under Different Management Systems in Northeastern Brazil
dc.typeArticle

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