Organic matter: a critical soil health indicator in agrosystems within the Cerrado of Bahia, Brazil and South Florida, USA.

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dc.contributorFLAVIA CRISTINA DOS SANTOS, CNPMS; MANOEL RICARDO DE ALBUQUERQUE FILHO, CNPMS; JOHNNY RODRIGUES SOARES; TANJILA JESMIN, UNIVERSITY OF FLORIDA; NOEL MANIRAKIZA, UNIVERSITY OF FLORIDA; MARCIA CRISTINA T DA SILVEIRA, CNPMS; IEDA DE CARVALHO MENDES, CPAC; MARIA INES LOPES DE OLIVEIRA; SURAJ MELKANI, UNIVERSITY OF FLORIDA; ANTONIO CARLOS REIS DE FREITAS, CPACP; JUACI VITORIA MALAQUIAS, CPAC; JEHANGIR H. BHADHA, UNIVERSITY OF FLORIDA.
dc.creatorSANTOS, F. C. dos
dc.creatorALBUQUERQUE FILHO, M. R. de
dc.creatorSOARES, J. R.
dc.creatorJESMIN, T.
dc.creatorMANIRAKIZA, N.
dc.creatorSILVEIRA, M. C. T. da
dc.creatorMENDES, I. de C.
dc.creatorOLIVEIRA, M. I. L. de
dc.creatorMELKANI, S.
dc.creatorFREITAS, A. C. R. de
dc.creatorMALAQUIAS, J. V.
dc.creatorBHADHA, J. H.
dc.date2025-06-24T18:47:41Z
dc.date2025-06-24T18:47:41Z
dc.date2025-06-24
dc.date2025
dc.date.accessioned2026-07-07T05:27:45Z
dc.descriptionSoil health (SH) indicators, such as organic matter (OM) content and enzymatic activity (EA), are critical for assessing the sustainability of mineral soils in integrated and cover cropping systems. Taking into account the following objectives: (i) to assess the relationship between OM and other SH indicators, (ii) to evaluate the evolution of SH using two models (SH indicators (SHI) scoring approach and A Modified Comprehensive Assessment of Soil Health scoring system developed for Florida soils (A modified CASH method)), and (iii) present their effectiveness in Brazil and the USA, a medium-term study (2019–2023) in Brazil and a short-term seasonal study (2022–2023) in the USA were conducted in diverse agroecosystems. In Brazil, four agricultural systems were analyzed: Cerrado (Cer), Conventional (Conv), Integrated Crop-Livestock (ICL), and Integrated Crop-Livestock-Forestry (ICLF). In the USA, two cover cropping systems in South Florida were assessed: double cover cropping system (DCCS) and multiple cover cropping system (MCCS). Soil samples were collected for analysis of key soil properties. Results in Brazil showed higher OM in the Cer (1.08 dag kg-1) and ICL (1.12 dag kg-1) systems, and increased enzymatic activity in 2023, particularly in ICL (AS = 33.85 mg de p-nitrofenol kg-1 soil h-1 and BG = 54.65 mg de p-nitrofenol kg-1 soil h-1) and ICLF (AS = 21.07 mg de p-nitrofenol kg-1 soil h-1 and BG = 48.90 mg de p-nitrofenol kg-1 soil h-1). Enzyme activity was more responsive to management practices than OM. Principal Component Analysis revealed stronger correlations between OM, EA, and macronutrients in more sustainable systems like ICL and ICLF. The SHI scoring approach better captured changes in Brazil. In the USA short-term cover cropping systems showed no significant changes in OM or EA, but CASH method suggested slight improvements in MCCS. This study highlights the importance of OM and EA as key indicators for assessing and improving SH and suggests that while integrated and cover cropping systems offer potential benefits, longer-term management and organic amendments are necessary to achieve sustained improvements in soil health.
dc.identifierFrontiers in Soil Science, v. 5, 1524550, 2025.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1176769
dc.identifierhttps://doi.org/10.3389/fsoil.2025.1524550
dc.identifier.urihttp://hdl.handle.net/123456789/491987
dc.languageeng
dc.rightsopenAccess
dc.subjectSolo Arenoso
dc.subjectMatéria Orgânica
dc.subjectCerrado
dc.subjectNutriente Orgânico
dc.subjectLavoura
dc.subjectPecuária
dc.subjectFloresta
dc.subjectPlanta de Cobertura
dc.subjectAtividade Enzimática
dc.subjectFísica do Solo
dc.subjectQuímica do Solo
dc.titleOrganic matter: a critical soil health indicator in agrosystems within the Cerrado of Bahia, Brazil and South Florida, USA.
dc.typeArtigo de periódico

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