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Application Technique and Slurry Co-Fermentation Effects on Ammonia, Nitrous Oxide, and Methane Emissions after Spreading

II. Greenhouse Gas Emissions

Institute of Plant Nutrition, University of Bonn, Karlrobert-Kreiten-Str. 13, 53115 Bonn, Germany

View larger version (35K): [in a new window]   Fig. 1. Methane emission rates after spreading co-fermented slurry with different application techniques on arable (a) and grassland (b) sites. Data represent means and standard deviation (n = 4).

View larger version (46K): [in a new window]   Fig. 2. Cumulated CH4 emission after spreading co-fermented slurry with different application techniques on arable (a) and grassland (b) sites. Data represent means and standard deviation (n = 4).

View larger version (37K): [in a new window]   Fig. 3. Cumulated CH4 emission after trail hose application of co-fermented slurry and unfermented cattle slurry on arable (a) and grassland (b) sites. Data represent means and standard deviation (n = 4).

View larger version (39K): [in a new window]   Fig. 4. Nitrous oxide emission rate and meteorological data after spreading co-fermented slurry with different application techniques on grassland. (a) Whole experimental period. (b) First week of the experiment. Data represent means and standard deviation for emission rates (n = 4).

View larger version (30K): [in a new window]   Fig. 5. Nitrous oxide emission rate and meteorological data after spreading co-fermented slurry with different application techniques on arable land. Data represent means and standard deviation for emission rates (n = 4).

View larger version (36K): [in a new window]   Fig. 6. Cumulated N2O emission after spreading co-fermented slurry with different application techniques on arable (a) and grassland (b) sites. Data represent means and standard deviation (n = 4).

View larger version (32K): [in a new window]   Fig. 7. Cumulated N2O emission after trail hose application of co-fermented slurry and unfermented cattle slurry on arable (a) and grassland (b) sites. Data represent means and standard deviation (n = 4).

View larger version (38K): [in a new window]   Fig. 8. Climatic warming potential of the different application techniques for co-fermented slurry and trail hose–applied unfermented slurry expressed as CO2 equivalents calculated from the emission of the single trace gases. Data represent means and standard deviation (n = 4).