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Lowering N2o Emissions From Soils Using Eucalypt Biochar: The Importance Of Redox Reactions, P Quin, Stephen D. Joseph, O Husson, Scott Donne, David R. G Mitchell, Paul G. Munroe, D Phelan, A L. Cowie, Lukas Van Zwieten
Lowering N2o Emissions From Soils Using Eucalypt Biochar: The Importance Of Redox Reactions, P Quin, Stephen D. Joseph, O Husson, Scott Donne, David R. G Mitchell, Paul G. Munroe, D Phelan, A L. Cowie, Lukas Van Zwieten
Faculty of Engineering and Information Sciences - Papers: Part A
Agricultural soils are the primary anthropogenic source of atmospheric nitrous oxide (N2OO), contributing to global warming and depletion of stratospheric ozone. Biochar addition has shown potential to lower soil N2OO emission, with the mechanisms remaining unclear. We incubated eucalypt biochar (550 °C) - 0, 1 and 5% (w/w) in Ferralsol at 3 water regimes (12, 39 and 54% WFPS) - in a soil column, following gamma irradiation. After N2OO was injected at the base of the soil column, in the 0% biochar control 100% of expected injected N2OO was released into headspace, declining to 67% in the 5% amendment. In …