IMPACT4SOIL OpenAire Bielefeld Academic Search Engine (BASE) PURE Aarhus University Crossref Microsoft Academic Graph Plant and Soil Restricted 2011-07-05 Biochar is produced as a by-product of the low temperature pyrolysis of biomass during bioenergy extraction and its incorporation into soil is of global interest as a potential carbon sequestration tool. Biochar influences soil nitrogen transformations and its capacity to take up ammonia is well recognized. Anthropogenic emissions of ammonia need to be mitigated due to negative environmental impacts and economic losses. Here we use an isotope of nitrogen to show that ammonia-N adsorbed by biochar is stable in ambient air, but readily bioavailable when placed in the soil. When biochars, containing adsorbed 15N labelled ammonia, were incorporated into soil the 15N recovery by roots averaged 6.8% but ranged from 26.1% to 10.9% in leaf tissue due to differing biochar properties with plant 15N recovery greater when acidic biochars were used to capture ammonia. Recovery of 15N as total soil nitrogen (organic+inorganic) ranged from 45% to 29% of 15N applied. We provide a proof of concept for a synergistic mitigation option where anthropogenic ammonia emissions could be captured using biochar, and made bioavailable in soils, thus leading to nitrogen capture by crops, while simultaneously sequestering carbon in soils. ryegrass 550 ANZSRC::31 Biological sciences ANZSRC::0703 Crop and Pasture Production ANZSRC::050301 Carbon Sequestration Science ANZSRC::30 Agricultural 04 agricultural and veterinary sciences 540 ammonia 01 natural sciences 7. Clean energy nitrogen veterinary and food sciences 13. Climate action ANZSRC::0503 Soil Sciences ANZSRC::41 Environmental sciences 0401 agriculture, forestry, and fisheries biochar ANZSRC::070304 Crop and Pasture Biomass and Bioproducts N stable isotope 0105 earth and related environmental sciences Taghizadeh-Toosi, A, Clough, Timothy, Sherlock, RR, Condron, LM, 2011-07-06 journalpaper Biochar is produced as a by-product of the low temperature pyrolysis of biomass during bioenergy extraction and its incorporation into soil is of global interest as a potential carbon sequestration tool. Biochar influences soil nitrogen transformations and its capacity to take up ammonia is well recognized. Anthropogenic emissions of ammonia need to be mitigated due to negative environmental impacts and economic losses. Here we use an isotope of nitrogen to show that ammonia-N adsorbed by biochar is stable in ambient air, but readily bioavailable when placed in the soil. When biochars, containing adsorbed 15N labelled ammonia, were incorporated into soil the 15N recovery by roots averaged 6.8% but ranged from 26.1% to 10.9% in leaf tissue due to differing biochar properties with plant 15N recovery greater when acidic biochars were used to capture ammonia. Recovery of 15N as total soil nitrogen (organic+inorganic) ranged from 45% to 29% of 15N applied. We provide a proof of concept for a synergistic mitigation option where anthropogenic ammonia emissions could be captured using biochar, and made bioavailable in soils, thus leading to nitrogen capture by crops, while simultaneously sequestering carbon in soils. Biochar Adsorbed Ammonia Is Bioavailable 10.1007/s11104-011-0870-3 https://doi.org/10.1007/s11104-011-0870-3