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Volume 7
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10.3390/soilsystems7010011
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Article

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

by
Adriano Venicius Santana Gualberto
1,
Henrique Antunes de Souza
2,
Edvaldo Sagrilo
2,
Ademir Sergio Ferreira Araujo
3,*,
Lucas William Mendes
4,
Erika Valente de Medeiros
5,
Arthur Prudêncio de Araujo Pereira
6,
Diogo Paes da Costa
5,
Renato Falconeres Vogado
7,
João Rodrigues da Cunha
8,
Marcos Lopes Teixeira
2 and
Luiz Fernando Carvalho Leite
2
1
Department of Agronomy, Campus de Bom Jesus, Universidade Federal do Piauí, Bom Jesus 64900-000, PI, Brazil
2
Embrapa Meio Norte, Teresina 64000-030, PI, Brazil
3
Campus da Socopo, Universidade Federal do Piauí, Teresina 64049-550, PI, Brazil
4
Centro de Energia Nuclear na Agricultura, Piracicaba 13400-340, SP, Brazil
5
Campus da Agronomia, Universidade Federal do Agreste Pernambucano, Garanhuns 55290-000, PE, Brazil
6
Cempus do Pici, Universidade Federal do Ceara, Fortaleza 60020-903, CE, Brazil
7
Campus de Areia, Universidade Federal da Paraiba, Areia 58397-000, PB, Brazil
8
CODEVASF, Teresina 64000-018, PI, Brazil
*
Author to whom correspondence should be addressed.
Soil Syst. 2023, 7(1), 11; https://doi.org/10.3390/soilsystems7010011
Submission received: 12 December 2022 / Revised: 2 February 2023 / Accepted: 3 February 2023 / Published: 5 February 2023
(This article belongs to the Special Issue Advancements in Soil and Sustainable Agriculture)
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Abstract

The 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.
Keywords: Cerrado; no-tillage; soil quality; oxisols Cerrado; no-tillage; soil quality; oxisols

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MDPI and ACS Style

Gualberto, 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

AMA Style

Gualberto AVS, de Souza HA, Sagrilo E, Araujo ASF, Mendes LW, de Medeiros EV, Pereira APdA, da Costa DP, Vogado RF, da Cunha JR, et al. Organic C Fractions in Topsoil under Different Management Systems in Northeastern Brazil. Soil Systems. 2023; 7(1):11. https://doi.org/10.3390/soilsystems7010011

Chicago/Turabian Style

Gualberto, Adriano Venicius Santana, Henrique Antunes de Souza, Edvaldo Sagrilo, Ademir Sergio Ferreira Araujo, Lucas William Mendes, Erika Valente de Medeiros, Arthur Prudêncio de Araujo Pereira, Diogo Paes da Costa, Renato Falconeres Vogado, João Rodrigues da Cunha, and et al. 2023. "Organic C Fractions in Topsoil under Different Management Systems in Northeastern Brazil" Soil Systems 7, no. 1: 11. https://doi.org/10.3390/soilsystems7010011

APA Style

Gualberto, 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., Teixeira, M. L., & Leite, L. F. C. (2023). Organic C Fractions in Topsoil under Different Management Systems in Northeastern Brazil. Soil Systems, 7(1), 11. https://doi.org/10.3390/soilsystems7010011

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