IMPACT4SOIL OpenAire Bielefeld Academic Search Engine (BASE) eScholarship - University of California UnpayWall Crossref Microsoft Academic Graph https://escholarship.org/content/qt3d16p0gn/qt3d16p0gn.pdf https://doi.org/10.1007/s00374-012-0752-8 Biology and Fertility of Soils Open Access 2012-11-22 To determine nitrogen (N) fate and environmental impact of applying anaerobic digestion slurry (ADS) to rice paddy (Oryza sativa L.), a field experiment was established using three treatments based on contrasting N application rate. The ADS (with ammonium-N accounting for >80 % of total N) treatment at a conventional application rate of 270 kg N ha−1 was compared to a negative control (no N fertilizer) and a positive control of urea applied at 270 kg N ha−1. The N budget showed the following distribution of applied N from ADS and urea: 41.3 ± 5.1 % for ADS and 36.6 ± 4.4 % for urea recovered by the rice plant (including straw, grain, and root), 16.4 ± 3.7 % for ADS and 7.4 ± 1.8 % for urea lost via ammonia volatilization, 0.26 ± 0.15 % for ADS and 0.15 ± 0.12 % for urea lost by direct N2O emission, 1.9 ± 0.5 % for ADS and 2.3 ± 0.8 % for urea leached downward, 0.70 ± 0.15 % for ADS and 0.67 ± 0.12 % for urea discharged with floodwater drainage, and 39.4 ± 8.4 % for ADS and 53.0 ± 9.1 % for urea retained by soil or lost by N2 emission. Compared to urea application, ADS application impacts the environment mainly through gaseous N losses rather than water N losses. ADS application had a positive impact on rice grain yield and reduced chemical fertilizer use. Considering the wide distribution of paddy fields and the ever-increasing quantities of ADS, ADS may serve as a valuable N source for rice cultivation, although mitigating ammonia and N2O losses should be further investigated. 2. Zero hunger Agricultural and Veterinary Sciences Agronomy & Agriculture 04 agricultural and veterinary sciences Ammonia volatilization Biological Sciences 7. Clean energy Nitrogen-use efficiency 6. Clean water Anaerobically digested slurry Denitrification Paddy field 0401 agriculture, forestry, and fisheries Zero Hunger Environmental Sciences Chen, Dingjiang, Jiang, Lina, Huang, Hong, Toyota, Koki, Dahlgren, Randy A, Lu, Jun, 2012-11-22 journalpaper To determine nitrogen (N) fate and environmental impact of applying anaerobic digestion slurry (ADS) to rice paddy (Oryza sativa L.), a field experiment was established using three treatments based on contrasting N application rate. The ADS (with ammonium-N accounting for >80 % of total N) treatment at a conventional application rate of 270 kg N ha−1 was compared to a negative control (no N fertilizer) and a positive control of urea applied at 270 kg N ha−1. The N budget showed the following distribution of applied N from ADS and urea: 41.3 ± 5.1 % for ADS and 36.6 ± 4.4 % for urea recovered by the rice plant (including straw, grain, and root), 16.4 ± 3.7 % for ADS and 7.4 ± 1.8 % for urea lost via ammonia volatilization, 0.26 ± 0.15 % for ADS and 0.15 ± 0.12 % for urea lost by direct N2O emission, 1.9 ± 0.5 % for ADS and 2.3 ± 0.8 % for urea leached downward, 0.70 ± 0.15 % for ADS and 0.67 ± 0.12 % for urea discharged with floodwater drainage, and 39.4 ± 8.4 % for ADS and 53.0 ± 9.1 % for urea retained by soil or lost by N2 emission. Compared to urea application, ADS application impacts the environment mainly through gaseous N losses rather than water N losses. ADS application had a positive impact on rice grain yield and reduced chemical fertilizer use. Considering the wide distribution of paddy fields and the ever-increasing quantities of ADS, ADS may serve as a valuable N source for rice cultivation, although mitigating ammonia and N2O losses should be further investigated. Nitrogen Dynamics Of Anaerobically Digested Slurry Used To Fertilize Paddy Fields 10.1007/s00374-012-0752-8