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Carbon stability of biochar, aging process and fertilizer effect from formulations with mineral sources

Abstract

The increase in nitrogen use efficiency is fundamental to sustainable intensification of agriculture in order to meet the needs of an estimated global population of 9.6 billion people by 2050 and contribute to mitigation of global warming. This proposal aims to evaluate the low-cost technology for biochar (BC - fine coal waste in manufacturing processo of charcoal) as soil conditioner or formulated fertilizer with increased efficiency. The strategy to reach the goal is composed of research activities in laboratory controlled environment, in greenhouse and in the field. In a laboratory controlled environment, incubation with of eucalyptus BC and soil (4 types) will be carried out to determine the carbon stability from BC, evaluate the impact of native organic matter of soil and characterize the carbon sequestration process. In the laboratory will also be tested the speed of N release of 14 and 18 organomineral fertilizers formulated with BC and urea (or ammonium sulfate). Such results will be used for selection of four promising formulations for the slow release of N and used in the next step of pots study. The purpose of the trial in pots is evaluate the release of N and the plant component (maize), compared to conventional fertilizers and slow release fertilizers already. From that stage two organomineral fertilizers of presumably increased efficiency (pots results) will be tested in field to determine the N use efficiency by maize and quantification of N2O emissions to the atmosphere, compared to conventional nitrogen source and treatment in wich biochar will be applied in physical mixture with the mineral nitrogen (no formulation in industry). The survey results should enable a low-cost technical solution for reuse of coal fines (BC) in direct application to the soil or formulation in the industry with mineral nitrogen source, and the expected impacts are: (i) improvement in the estimate of C sequestration in soil with BC application; (Ii) increased N use efficiency and consequent lower dose for field application (lower environmental risks); And (iii) reduction of N2O emissions with the use of the organomineral formulation. (AU)

Articles published in Pesquisa FAPESP Magazine about the research grant:
El biocarbón puede aportarle beneficios a la agricultura 
Biochar can have benefits in agriculture 
Articles published in Agência FAPESP Newsletter about the research grant:
Articles published in other media outlets (0 total):
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VEICULO: TITULO (DATA)

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)
PUGA, ALINE PEREGRINA; DE ALMEIDA QUEIROZ, MATHEUS CASTRO; VIEIRA LIGO, MARCOS ANTONIO; CARVALHO, CRISTINA SILVA; MORENO PIRES, ADRIANA MARLENE; SANTOS MARCATTO, JULIANA DE OLIVEIRA; DE ANDRADE, CRISTIANO ALBERTO. Nitrogen availability and ammonia volatilization in biochar-based fertilizers. ARCHIVES OF AGRONOMY AND SOIL SCIENCE, v. 66, n. 7, p. 13-pg., . (15/21633-7, 17/02886-7)
PUGA, ALINE PEREGRINA; DE ALMEIDA QUEIROZ, MATHEUS CASTRO; VIEIRA LIGO, MARCOS ANTONIO; CARVALHO, CRISTINA SILVA; MORENO PIRES, ADRIANA MARLENE; SANTOS MARCATTO, JULIANA DE OLIVEIRA; DE ANDRADE, CRISTIANO ALBERTO. Nitrogen availability and ammonia volatilization in biochar-based fertilizers. ARCHIVES OF AGRONOMY AND SOIL SCIENCE, . (15/21633-7, 17/02886-7)
PUGA, ALINE PEREGRINA; GRUTZMACHER, PRISCILA; PELLEGRINO CERRI, CARLOS EDUARDO; RIBEIRINHO, VICTOR SANCHES; DE ANDRADE, CRISTIANO ALBERTO. Biochar-based nitrogen fertilizers: Greenhouse gas emissions, use efficiency, and maize yield in tropical soils. Science of The Total Environment, v. 704, . (15/21633-7, 17/02886-7)

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