The effect of biochar on the contribution of nitrification and denitrification to the flux of N2O in tropical and temperate soil

• Grant number: 13/24782-8
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Start date: March 01, 2014
• End date: February 28, 2015
• Field of knowledge: Agronomical Sciences - Animal Husbandry - Pastures and Forage Crops
• Principal Investigator: Ana Cláudia Ruggieri
• Grantee: Abmael da Silva Cardoso
• Supervisor: Johan Six
• Host Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil
• Institution abroad: Swiss Federal Institute of Technology Zurich, Switzerland
• Associated to the scholarship: 12/06718-8 - Nitrogen balance, emission of greenhouse gases and mitigation of N2O in the production of beef cattle grazing., BP.DR

Abstract

The fifth report of the Intergovernmental Panel on Climate Change (IPCC) confirms once again that in the present state of knowledge it is clear that climate changes have occurred in different parts of the planet. Brazil largely contributes to the emission of greenhouse gases (GHG). Among these gases is nitrous oxide (N2O), which weight in Brazil's greenhouse gas balance is increasing. Understanding mechanisms underlying the emission of this gas and looking for alternative mitigation is crucial. Nitrification and denitrification are the mechanisms that allow the production of N2O. In tropical grassland soils the sources of N2O are not well understood. Additionally, the amendment of biochar to the soil has been suggested as a promising N2O mitigation strategy, but could alter nitrification and denitrification in different ways. The objective of this research is to elucidate the contribution of nitrification and denitrification to N2O fluxes in tropical and temperate soils under various moisture conditions and with the addition of biochar. This research will use 15N stable isotope techniques to distinguish between nitrification and denitrification sources of N2O and will be carried out under supervision of Dr. Johan Six at the Swiss Federal Institute of Technology, in Zurich, Switzerland. (AU)

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)

CARDOSO, ABMAEL DA SILVA; OLIVEIRA, SERENA CAPRIOGLI; JANUSCKIEWICZ, ESTELLA ROSSETO; BRITO, LIZIANE FIGUEIREDO; MORGADO, ELIANE DA SILVA; REIS, RICARDO ANDRADE; RUGGIERI, ANA CLAUDIA. Seasonal effects on ammonia, nitrous oxide, and methane emissions for beef cattle excreta and urea fertilizer applied to a tropical pasture. SOIL & TILLAGE RESEARCH, v. 194, NOV 2019. (13/24782-8, 13/00204-5, 11/00060-8, 12/06718-8)

CARDOSO, ABMAEL DA SILVA; QUINTANA, BRUNA GIOVANI; JANUSCKIEWICZ, ESTELLA ROSSETO; BRITO, LIZIANE DE FIGUEIREDO; MORGADO, ELIANE DA SILVA; REIS, RICARDO ANDRADE; RUGGIERI, ANA CLAUDIA. N2O emissions from urine-treated tropical soil: Effects of soil moisture and compaction, urine composition, and dung addition. CATENA, v. 157, p. 325-332, OCT 2017. (13/24782-8, 13/00204-5, 11/00060-8, 12/06718-8)