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Soil CO2 emission after management associated to soil physical properties under no-tillage system

Grant number: 15/25615-3
Support type:Scholarships in Brazil - Master
Effective date (Start): June 01, 2016
Effective date (End): July 31, 2017
Field of knowledge:Agronomical Sciences - Agronomy - Crop Science
Principal researcher:Newton La Scala Júnior
Grantee:Bruna de Oliveira Silva
Home Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil

Abstract

Among the greenhouse gases CO2 is the largest contributor to the so called "additional greenhouse effect" in the last 200 years, accounting for 60% of global warming. Among the main sources of CO2 highlights are the burning of fossil fuels and agriculture, the latter mainly through changes in land use and soil management. One of the strategies to reduce the CO2 contribution to global warming is based on increasing the soil drainage capacity through mechanisms which promote the reduction of emissions and carbon sequestration in the soil. Thus, understanding the factors which contribute to the loss of CO2 in agricultural soils is crucial to determine strategies of emission reduction. In this context, the aim of this study is to evaluate the soil CO2 emission after management and its relation to the soil physical properties in the short term in areas under no-tillage system. The experiment will be conducted at Campi of FCAV-UNESP (21º15' S e 48º18' O) in three adjacent areas measuring 10 x 3 m each, which will be applied two soil tillage: (i) rotary hoe and conventional harrow (Conv), representing a much more instense soil tillage, (ii) disc plowing and disc harrowing (Red), characterazing a smaller soil tillage, and (iii) no-tillage (soil with cover and without management). It will be 15 days of evaluations of CO2 emissions, temperature and soil moisture. Concurrently daily soil samples will be collected to determine the physical attributes. The results will be analyzed initially using descriptive statistics (mean, standard error of the mean, maximum, minimum and coefficient of variation). Analysis of variance will be done in a completely randomized design, and observations will be repeated over time. (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)
SILVA, BRUNA DE OLIVEIRA; MOITINHO, MARA REGINA; DE ARAUJO SANTOS, GUSTAVO ANDRE; TEIXEIRA, DANIEL DE BORTOLI; FERNANDES, CAROLINA; LA SCALA, JR., NEWTON. Soil CO2 emission and short-term soil pore class distribution after tillage operations. SOIL & TILLAGE RESEARCH, v. 186, p. 224-232, MAR 2019. Web of Science Citations: 5.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
SILVA, Bruna de Oliveira. CO2 emission and soil consolidation in the short term after management activities. 2017. Master's Dissertation - Universidade Estadual Paulista (Unesp). Faculdade de Ciências Agrárias e Veterinárias. Jaboticabal Jaboticabal.

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