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Changes in quantity and quality of SOM in whole soils and fractions affected by times of adoption of no-till system: evidence from natural 13C abundance and solid-state 13C NMR spectroscopy

Grant number: 17/23159-6
Support Opportunities:Scholarships abroad - Research Internship - Post-doctor
Effective date (Start): March 01, 2018
Effective date (End): December 20, 2018
Field of knowledge:Agronomical Sciences - Agronomy - Soil Science
Principal Investigator:Débora Marcondes Bastos Pereira
Grantee:Clever Briedis
Supervisor: Jeffrey Baldock
Host Institution: Embrapa Instrumentação Agropecuária. Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA). Ministério da Agricultura, Pecuária e Abastecimento (Brasil). São Carlos , SP, Brazil
Research place: CSIRO Agriculture and Food, Australia  
Associated to the scholarship:16/02387-8 - Qualitative changes of organic matter affected by soil use and management systems as revealed by spectroscopic techniques, BP.PD


Soil organic matter (SOM) is one of the main factors that contributes for high soil quality and for crop yield increases in the tropics and subtropics. However, soil management can influence its content and composition. No-till (NT) is a well-established production system in Brazil that promotes C sequestration, but there are few studies on the SOM dynamics over time in this system and on the stability of the newly C sequestered. Thus, the objective of this project is to provide a more detailed understanding of the effects of this soil management system on SOM dynamics (i.e., quantity and quality), evaluating the stability of the newly sequestered C and inferring about its resilience in an occasional soil management change. In order to evaluate the allocation of the newly C sequestered in the SOM fractions (with different levels of stability) the natural abundance of 13C will be applied. To identify the alteration of SOM composition the solid-state 13C NMR spectroscopy will be applied in the whole soil and SOM fractions. Finally, we intend to calibrate and validate a model for the rapid prediction of C content and composition in the soils studied. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
BRIEDIS, CLEVER; BALDOCK, JEFF; DE MORAES SA, JOAO C.; DOS SANTOS, JOSIANE B.; MCGOWAN, JANINE; MILORI, DEBORA M. B. P.. rganic carbon pools and organic matter chemical composition in response to different land uses in southern Brazi. European Journal of Soil Science, v. 72, n. 3, . (16/02387-8, 17/23159-6)
BRIEDIS, CLEVER; BALDOCK, JEFF; DE MORAES SA, JOAO CARLOS; DOS SANTOS, JOSIANE BURKNER; BASTOS PEREIRA MILORI, DEBORA MARCONDES. Strategies to improve the prediction of bulk soil and fraction organic carbon in Brazilian samples by using an Australian national mid-infrared spectral library. Geoderma, v. 373, . (16/02387-8, 17/23159-6)

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